Post on 30-Jun-2020
48
APPENDIX A
Tulsa Case Study #1 - January 4, 1998
DATA AND FIGURES
ding toover
49
Table A1. The first basin(s) in each county where ABR exceeded FFG during the January 4, 1998 event accorKINX data. The date and time (in UTC) indicate when ABR first exceeded FFG, and the ABR and FFG valuesthe specified time interval are included. Flash flood verification is based on reports inStorm Data.
Date /Time
BasinID(s)
BasinType
DrainageArea (mi2)
County ABR / FFG / TimeInterval
Flash FloodReported
01/0411:46
5786 Subdivision 14.5 PawneeOK
2.58 / 2.50 / 6-hr No
01/0413:43
626062616304
Subdivision““
11.018.935.8
MuskogeeOK
1.34 / 1.00 / 1-hr1.23 / 1.00 / 1-hr1.09 / 1.00 / 1-hr
No
01/0413:43
6171 Subdivision 12.4 SequoyahOK
1.21 / 1.20 / 1-hr No
01/0416:09
616661466082610761666146
Subdivision“““““
26.517.472.964.026.517.4
AdairOK
2.26 / 1.80 / 3-hr2.21 / 1.80 / 3-hr1.88 / 1.80 / 3-hr1.86 / 1.80 / 3-hr2.86 / 2.20 / 6-hr2.83 / 2.20 / 6-hr
Yes / 1530
01/0416:09
596959255959
Subdivision““
42.518.413.7
WashingtonAR
2.53 / 2.20 / 6-hr2.33 / 2.20 / 6-hr2.28 / 2.20 / 6-hr
Yes / 1600
01/0416:09
12431269128
Primary“MAP
27.9108.9406.1
CherokeeOK
2.09 / 1.90 / 6-hr2.04 / 1.90 / 6-hr1.95 / 1.90 / 6-hr
No
01/0416:09
6259633912721297
Subdivision“Primary“
34.110.547.1207.2
McIntoshOK
1.97 / 1.80 / 6-hr2.07 / 1.80 / 6-hr2.27 / 1.80 / 6-hr2.08 / 1.80 / 6-hr
No
Januaryand is
aled or
50
Table A2. The first basin(s) in each county where ABR rate equaled or exceeded 1.5 inches/hour during the4, 1998 event according to KINX data. The ABR rate shown is the first rate to equal or exceed 1.5 inches/hournot necessarily the peak rate during the event. The date and time (in UTC) indicate when ABR rate first equexceeded 1.5 inches/hour, and flash flood verification is based on reports inStorm Data.
Date /Time
BasinID(s)
BasinType
DrainageArea (mi2)
County ABR Rate(inches/hour)
Flash FloodReported / Time
01/041050
5764 Subdivision 17.7 Washington& Tulsa OK
1.7 No
01/041210
6339 Subdivision 10.5 McIntoshOK
1.7 No
01/041210
6198 Subdivision 20.5 MuskogeeOK
2.1 No
01/041225
58936138
Subdivision“
19.419.7
CherokeeOK
1.52.0
No
01/041255
6171 Subdivision 12.4 SequoyahOK
2.8 No
01/041300
59706092
Subdivision“
39.613.3
AdairOK
2.12.5
Yes / 1530
01/041320
5778 Subdivision 16.1 BentonAR
1.5 No
01/041330
59391201
SubdivisionPrimary
26.252.4
WashingtonAR
1.61.5
Yes / 1600
51
Figure A1. KINX 3-hour Precipitation Image: 01/04/98 0700-1000 UTC.
52
Figure A2. KINX 3-hour Precipitation Image: 01/04/98 1000-1300 UTC.
53
Figure A3. KINX 3-hour Precipitation Image: 01/04/98 1300-1600 UTC.
54
Figure A4. KINX Storm Total Precipitation Image: 01/04/98 0459-1641 UTC.
55
Figure A5.
56
Figure A6.
57
Figure A7.
58
Figure A8.
59
Figure A9.
60
Figure A10.
61
Figure A11.
62
APPENDIX B
Tulsa Case Study #2 - September 14, 1998
DATA AND FIGURES
Septem-es/hourst
63
Table B1. The first basin(s) in each county where ABR rate equaled or exceeded 1.0 inches/hour during theber 14, 1998 event according to KINX data. The ABR rate shown is the first rate to equal or exceed 1.0 inchand is not necessarily the peak rate during the event. The date and time (in UTC) indicate when ABR rate firequaled or exceeded 1.0 inches/hour, and flash flood verification is based on reports in Storm Data.
Date /Time
BasinID(s)
BasinType
DrainageArea (mi2)
County ABR Rate(inches/hour)
Flash FloodReported / Time
09/140340
6187 Subdivision 58.0 MuskogeeOK
1.1 Yes / 0500
09/140345
5961 Subdivision 25.1 CherokeeOK
1.3 Yes / 0445
09/140525
5668 Subdivision 11.2 CraigOK
1.1 No
09/140550
6201 Subdivision 35.9 SequoyahOK
1.1 Yes / 0900
09/140630
60926117
Subdivision“
13.311.6
AdairOK
1.41.4
Yes / 0630
09/140800
5677 Subdivision 18.9 DelawareOK
1.1 Yes / 1015
09/140825
5528 Subdivision 11.5 OttawaOK
1.0 Yes / 0830
64
Figure B1. KINX 3-hour Precipitation Image: 09/14/98 0100-0400 UTC.
65
Figure B2. KINX 3-hour Precipitation Image: 09/14/98 0400-0700 UTC.
66
Figure B3. KINX 3-hour Precipitation Image: 09/14/98 0700-1000 UTC.
67
Figure B4. KINX 3-hour Precipitation Image: 09/14/98 1000-1300 UTC.
68
Figure B5.
69
Figure B6.
70
Figure B7.
71
APPENDIX C
Tulsa Case Study #3 - October 5, 1998
DATA AND FIGURES
ding toover
72
Table C1. The first basin(s) in each county where ABR exceeded FFG during the October 5, 1998 event accorKINX data. The date and time (in UTC) indicate when ABR first exceeded FFG, and the ABR and FFG valuesthe specified time interval are included. Flash flood verification is based on reports in Storm Data.
Date /Time
BasinID(s)
BasinType
DrainageArea (mi2)
County ABR / FFG /Time Interval
Flash FloodReported / Time
10/051333
6883 Subdivision 113.8 DelawareOK
2.75 / 2.70 / 6-hr(Mayes)
Yes / 1200
10/051628
506 Major 184.8 CherokeeOK
2.47 / 2.40 / 3-hr Yes / 1100
10/051628
506 Major 184.8 SequoyahOK
2.47 / 2.40 / 3-hr(Cherokee)
Yes / 1800
10/051658
1243 Primary 25.8 AdairOK
2.75 / 2.40 / 3-hr Yes / 1700
10/051658
6261 Subdivision 18.9 MuskogeeOK
2.29 / 2.20 / 3-hr Yes / 1230
10/051928
64666450
Subdivision“
23.813.3
LatimerOK
2.09 / 2.00 / 3-hr2.08 / 2.00 / 3-hr
Yes / 1900
10/052028
6525 Subdivision 19.4 LeFloreOK
2.13 / 2.00 / 1-hr Yes / 1900
10/052357
6517 Subdivision 28.8 PittsburgOK
2.43 / 2.30 / 3-hr Yes / 1700
10/060123
6415639813181316
Subdivision“Primary“
19.515.361.654.5
SebastianAR
2.70 / 2.40 / 6-hr2.66 / 2.40 / 6-hr2.78 / 2.40 / 6-hr2.53 / 2.40 / 6-hr
Yes / 1900
10/060123
63931308
SubdivisionPrimary
20.482.1
HaskellOK
1.85 / 1.80 / 6-hr2.03 / 1.80 / 6-hr
Yes / 1500
ctoberand is
aled or
73
Table C2. The first basin(s) in each county where ABR rate equaled or exceeded 1.5 inches/hour during the O5, 1998 event according to KINX data. The ABR rate shown is the first rate to equal or exceed 1.5 inches/hournot necessarily the peak rate during the event. The date and time (in UTC) indicate when ABR rate first equexceeded 1.5 inches/hour, and flash flood verification is based on reports in Storm Data.
Date /Time
BasinID(s)
BasinType
DrainageArea (mi2)
County ABR Rate(inches/hour)
Flash FloodReported / Time
10/050815
5708 Subdivision 21.3 BentonAR
1.5 Yes / 1030
10/050815
5677 Subdivision 18.9 DelawareOK
1.5 Yes / 1200
10/050830
5904 Subdivision 16.1 CherokeeOK
1.5 Yes / 1100
10/051115
6211 Subdivision 13.1 OkfuskeeOK
1.9 Yes / 1400
10/051200
6098 Subdivision 30.3 MuskogeeOK
1.8 Yes / 1230
10/051500
60926117
Subdivision“
13.311.6
AdairOK
1.61.6
Yes / 1700
10/051510
6171 Subdivision 12.4 SequoyahOK
1.9 Yes / 1800
10/051600
5968 Subdivision 26.2 WashingtonAR
1.8 Yes / 1500
10/051620
6277 Subdivision 9.8 HaskellOK
1.5 Yes / 1500
10/051620
6543 Subdivision 14.4 PittsburgOK
2.0 Yes / 1700
10/051715
6464 Subdivision 14.8 LatimerOK
1.5 Yes / 1900
10/051845
6377 Subdivision 16.4 LeFloreOK
2.7 Yes / 1900
10/051845
6218 Subdivision 36.2 CrawfordAR
2.5 No
10/051930
6289 Subdivision 14.9 SebastianAR
1.7 Yes / 1900
10/052000
6026 Subdivision 11.6 MadisonAR
3.0 No
10/052045
5857 Subdivision 58.5 CarrollAR
2.8 No
74
Figure C1. KINX 3-hour Precipitation Image: 10/05/98 0800-1100 UTC.
75
Figure C2. KINX 3-hour Precipitation Image: 10/05/98 1100-1400 UTC.
76
Figure C3. KINX 3-hour Precipitation Image: 10/05/98 1400-1700 UTC.
77
Figure C4. KINX 3-hour Precipitation Image: 10/05/98 1700-2000 UTC.
78
Figure C5. KINX 3-hour Precipitation Image: 10/05/98 2000-2300 UTC.
79
Figure C6. KINX Storm Total Precipitation Image: 10/05/98 0750-0151 UTC.
80
Figure C7.
81
Figure C8.
82
Figure C9.
83
Figure C10.
84
Figure C11.
85
Figure C12.
86
Figure C13.
87
APPENDIX D
Tulsa Case Study #4 - April 25, 1999
DATA AND FIGURES
ding toover
88
Table D1. The first basin(s) in each county where ABR exceeded FFG during the April 25, 1999 event accorKINX data. The date and time (in UTC) indicate when ABR first exceeded FFG, and the ABR and FFG valuesthe specified time interval are included. Flash flood verification is based on reports in Storm Data.
Date /Time
BasinID(s)
BasinType
DrainageArea (mi2)
County ABR / FFG /Time Interval
Flash FloodReported / Time
04/251108
5804582658245747
Subdivision“““
13.355.037.024.4
PawneeOK
1.22 / 1.10 / 3-hr1.15 / 1.10 / 3-hr1.14 / 1.10 / 3-hr1.12 / 1.10 / 3-hr
No
04/251208
572156845756
Subdivision““
14.012.438.6
OsageOK
1.51 / 1.30 / 3-hr1.46 / 1.30 / 3-hr1.46 / 1.30 / 3-hr
Yes / 1430
04/251338
559868441138
Subdivision“Primary
10.923.152.3
NowataOK
0.90 / 0.80 / 1-hr1.33 / 1.20 / 3-hr1.35 / 1.20 / 3-hr
Yes / 1430
04/251408
5674 Subdivision 11.5 RogersOK
2.13 / 2.10 / 6-hr Yes / 1430
04/251438
55255505
Subdivision“
31.317.4
CraigOK
2.05 / 1.90 / 6-hr2.01 / 1.90 / 6-hr
Yes / 1430
04/251508
548311061115
SubdivisionPrimary“
21.951.831.3
OttawaOK
1.84 / 1.70 / 6-hr1.77 / 1.70 / 6-hr1.74 / 1.70 / 6-hr
Yes / 1430
04/251538
6170 Subdivision 14.8 OkmulgeeOK
1.71 / 1.50 / 3-hr No
04/251715
5960 Subdivision 13.3 WagonerOK
1.73 / 1.50 / 3-hr Yes / 1430
04/251813
6097603160466038607561136136614861281223560567122120
Subdivision““““““““PrimaryMajor“MAP“
13.811.612.813.714.514.015.710.215.678.3357.9252.977.239.5
CreekOK
1.12 / 0.90 / 3-hr0.99 / 0.90 / 3-hr1.23 / 0.90 / 3-hr1.39 / 0.90 / 3-hr1.12 / 0.90 / 3-hr1.92 / 1.40 / 6-hr1.72 / 1.40 / 6-hr1.67 / 1.40 / 6-hr1.57 / 1.40 / 6-hr1.58 / 1.40 / 6-hr1.54 / 1.40 / 6-hr1.53 / 1.40 / 6-hr1.58 / 1.40 / 6-hr1.46 / 1.40 / 6-hr
Yes / 1430
04/251813
1433119457965795580358945767
Primary“Subdivision““““
18.9461.911.236.511.624.711.7
MayesOK
0.72 / 0.70 / 1-hr1.53 / 1.50 / 6-hr1.65 / 1.50 / 6-hr1.57 / 1.50 / 6-hr1.55 / 1.50 / 6-hr1.53 / 1.50 / 6-hr1.53 / 1.50 / 6-hr
Yes / 1430
89
04/251813
618261846186622262426181625612681263
Subdivision““““““Primary“
28.410.147.027.09.818.227.947.990.4
OkfuskeeOK
1.92 / 1.40 / 6-hr1.78 / 1.40 / 6-hr1.66 / 1.40 / 6-hr1.54 / 1.40 / 6-hr1.50 / 1.40 / 6-hr1.45 / 1.40 / 6-hr1.44 / 1.40 / 6-hr1.62 / 1.40 / 6-hr1.61 / 1.40 / 6-hr
No
04/251813
105597958135924583257641176
MAPSubdivision““““Primary
562.411.211.19.714.417.735.0
TulsaOK
1.10 / 0.90 / 3-hr1.10 / 0.90 / 3-hr1.60 / 1.40 / 6-hr1.58 / 1.40 / 6-hr1.56 / 1.40 / 6-hr1.49 / 1.40 / 6-hr1.65 / 1.40 / 6-hr
Yes / 1430
04/251813
1161686768545671
PrimarySubdivision““
51.411.811.319.3
WashingtonOK
1.87 / 1.80 / 6-hr1.86 / 1.80 / 6-hr1.86 / 1.80 / 6-hr1.81 / 1.80 / 6-hr
Yes / 1430
pril 25,and isaled or
90
Table D2. The first basin(s) in each county where ABR rate equaled or exceeded 1.5 inches/hour during the A1999 event according to KINX data. The ABR rate shown is the first rate to equal or exceed 1.5 inches/hour not necessarily the peak rate during the event. The date and time (in UTC) indicate when ABR rate first equexceeded 1.5 inches/hour, and flash flood verification is based on reports in Storm Data.
Date /Time
BasinID(s)
BasinType
DrainageArea (mi2)
County ABR Rate(inches/hour)
Flash FloodReported / Time
04/250715
6047 Subdivision 33.3 CreekOK
1.5 Yes / 1430
04/250820
5882 Subdivision 17.6 OsageOK
2.1 Yes / 1430
04/251045
5855 Subdivision 15.1 TulsaOK
2.0 Yes / 1430
04/251045
5823 Subdivision 13.5 PawneeOK
1.6 No
04/251230
61826256
Subdivision“
28.427.9
OkfuskeeOK
2.11.8
No
04/251300
6177 Subdivision 11.3 OkmulgeeOK
2.4 No
04/251400
57965803
Subdivision“ 11.6
MayesOK
1.51.6
Yes / 1430
04/251415
6860 Subdivision 11.4 CraigOK
1.5 Yes / 1430
04/251630
5960 Subdivision 13.3 WagonerOK
1.6 Yes / 1430
04/251720
5921 Subdivision 19.1 RogersOK
1.8 Yes / 1430
91
Figure D1. KINX 3-hour Precipitation Image: 04/25/99 1200-1500 UTC.
92
Figure D2. KINX 3-hour Precipitation Image: 04/25/99 1600-1900 UTC.
93
Figure D3. KINX 3-hour Precipitation Image: 04/25/99 1900-2200 UTC.
94
Figure D4. KINX Storm Total Precipitation Image: 04/25/99 0231-1539 UTC.
95
Figure D5.
96
Figure D6.
97
Figure D7.
98
Figure D8.
99
Figure D9.
100
Figure D10.
101
Figure D11.
102
APPENDIX E
Tulsa Case Study #5 - June 20, 1999
DATA AND FIGURES
ding toover
103
Table E1. The first basin(s) in each county where ABR exceeded FFG during the June 20, 1999 event accorKINX data. The date and time (in UTC) indicate when ABR first exceeded FFG, and the ABR and FFG valuesthe specified time interval are included. Flash flood verification is based on reports in Storm Data.
Date /Time
BasinID(s)
BasinType
DrainageArea (mi2)
County ABR / FFG /Time Interval
Flash FloodReported / Time
06/200926
57501433
SubdivisionPrimary
15.418.9
MayesOK
1.59 / 1.40 / 1-hr1.53 / 1.40 / 1-hr
Yes / 1045
06/201154
56855691
Subdivision“
29.413.3
RogersOK
1.54 / 1.40 / 3-hr1.42 / 1.40 / 3-hr
Yes / 1300
06/201223
56345626
Subdivision“
11.416.7
CraigOK
1.30 / 1.30 / 3-hr1.30 / 1.30 / 3-hr
Yes / 1300
06/201223
56516857
Subdivision“
14.736.2
NowataOK
1.17 / 0.90 / 3-hr1.07 / 0.90 / 3-hr
Yes / 1545
06/201253
5953 Subdivision 15.6 CherokeeOK
2.52 / 2.50 / 3-hr Yes / 0945
06/201421
6142 Subdivision 10.6 MuskogeeOK
2.03 / 2.00 / 3-hr No
06/201648
57835798
Subdivision“
19.710.2
OsageOK
1.46 / 1.40 / 3-hr1.44 / 1.40 / 3-hr
No
une 20,and isaled or
104
Table E2. The first basin(s) in each county where ABR rate equaled or exceeded 1.5 inches/hour during the J1999 event according to KINX data. The ABR rate shown is the first rate to equal or exceed 1.5 inches/hour not necessarily the peak rate during the event. The date and time (in UTC) indicate when ABR rate first equexceeded 1.5 inches/hour, and flash flood verification is based on reports in Storm Data.
Date /Time
BasinID(s)
BasinType
DrainageArea (mi2)
County ABR Rate(inches/hour)
Flash FloodReported / Time
06/200845
5796 Subdivision 11.2 MayesOK
1.7 Yes / 1045
06/200850
5904 Subdivision 16.1 CherokeeOK
1.7 Yes / 0945
06/201405
5760 Subdivision 19.1 RogersOK
1.5 Yes / 1300
105
Figure E1. KINX 3-hour Precipitation Image: 06/20/99 0400-0700 UTC.
106
Figure E2. KINX 3-hour Precipitation Image: 06/20/99 0700-1000 UTC.
107
Figure E3. KINX 3-hour Precipitation Image: 06/20/99 1000-1300 UTC.
108
Figure E4. KINX 3-hour Precipitation Image: 06/20/99 1300-1600 UTC.
109
Figure E5. KINX 3-hour Precipitation Image: 06/20/99 1600-1900 UTC.
110
Figure E6. KINX Storm Total Precipitation Image: 06/19/99 1133 - 06/20/99 1812 UTC.
111
Figure E7.
112
Figure E8.
113
Figure E9.
114
Figure E10.
115
Figure E11.
116
Figure E12.
117
Figure E13.
118
APPENDIX F
Sterling Case Study #1 - June 27, 1995
DATA AND FIGURES
ding toover
119
Table F1. The first basin(s) in each county where ABR exceeded FFG during the June 27, 1995 event accorKLWX data. The date and time (in UTC) indicate when ABR first exceeded FFG, and the ABR and FFG valuesthe specified time interval are included. Flash flood verification is based on reports inStorm Data.
Date /Time
BasinID(s)
BasinType
DrainageArea (mi2)
County ABR / FFG /Time Interval
Flash FloodReported / Time
06/271605
6075 Subdivision 39.4 MadisonVA
2.04 / 1.70 / 3-hr Yes / 1030
06/271802
6091 Subdivision 27.3 GreeneVA
2.57 / 2.30 / 6-hr Yes / 1430
June 27-ur andaled or
120
Table F2. The first basin(s) in each county where ABR rate equaled or exceeded 0.6 inches/hour during the 28, 1995 event according to KLWX data. The ABR rate shown is the first rate to equal or exceed 0.6 inches/hois not necessarily the peak rate during the event. The date and time (in UTC) indicate when ABR rate first equexceeded 0.6 inches/hour, and flash flood verification is based on reports inStorm Data.
Date /Time
BasinID(s)
BasinType
DrainageArea (mi2)
County ABR Rate(inches/hour)
Flash FloodReported / Time
06/270630
6146 Subdivision 30.9 MadisonVA
1.0 Yes / 1030
06/270630
6157 Subdivision 38.4 OrangeVA
0.8 Yes / 1030
06/270640
5811 Subdivision 23.4 LoudounVA
0.9 No
06/270640
5620 Subdivision 12.7 BerkeleyWV
0.9 No
06/270645
6184 Subdivision 20.0 GreeneVA
0.7 Yes / 1430
06/270700
5773 Subdivision 10.0 ClarkeVA
0.6 No
06/270715
6035 Subdivision 11.9 RappahannockVA
1.1 Yes / 1230
06/270740
5904 Subdivision 9.3 FauquierVA
0.9 Yes / 1230
06/270915
6105 Subdivision 10.3 CulpeperVA
1.2 Yes / 1300
06/271050
5886 Subdivision 30.0 WarrenVA
0.7 Yes / 1230
06/271220
5779 Subdivision 17.4 FrederickVA
0.6 Yes / 1330
06/271225
6187 Subdivision 10.2 AlbemarleVA
1.0 Yes / 030006/28
06/280000
62941305
SubdivisionPrimary
10.520.7
NelsonVA
1.10.7
Yes / 0400
121
Figure F1. KLWX 3-hour Precipitation Image: 06/27/95 0600-0900 UTC.
122
Figure F2. KLWX 3-hour Precipitation Image: 06/27/95 0900-1200 UTC.
123
Figure F3. KLWX 3-hour Precipitation Image: 06/27/95 1200-1500 UTC.
124
Figure F4. KLWX 3-hour Precipitation Image: 06/27/95 1500-1800 UTC.
125
Figure F5. KLWX 3-hour Precipitation Image: 06/27/95 1900-2200 UTC.
126
Figure F6. KLWX 3-hour Precipitation Image: 06/27/95 2200 - 06/28/95 0100 UTC.
127
Figure F7. KLWX 3-hour Precipitation Image: 06/28/95 0100-0400 UTC.
128
Figure F8. KLWX Storm Total Precipitation Image: 06/27/95 0558-1804 UTC.
129
Figure F9. KLWX Storm Total Precipitation Image: 06/27/95 1810 - 06/28/95 0420 UTC.
130
Figure F10.
131
Figure F11.
132
Figure F12.
133
Figure F13.
134
APPENDIX G
Sterling Case Study #2 - October 20-21, 1995
DATA AND FIGURES
ctobers/hourst
135
Table G1. The first basin(s) in each county where ABR rate equaled or exceeded 0.6 inches/hour during the O20-21, 1995 event according to KLWX data. The ABR rate shown is the first rate to equal or exceed 0.6 incheand is not necessarily the peak rate during the event. The date and time (in UTC) indicate when ABR rate firequaled or exceeded 0.6 inches/hour, and flash flood verification is based on reports inStorm Data.
Date /Time
BasinID(s)
BasinType
DrainageArea (mi2)
County ABR Rate(inches/hour)
Flash FloodReported / Time
10/202315
6670 Subdivision 20.7 FauquierVA
0.7 No
10/210005
6307 Subdivision 9.9 NelsonVA
0.8 Yes / 0145
10/210005
56816619
Subdivision“
12.32.8
FrederickVA
0.80.7
No
10/210020
5930 Subdivision 10.1 RockinghamVA
0.6 Yes / 0200
10/210025
5803 Subdivision 11.5 HardyWV
0.7 No
10/210045
5725 Subdivision 15.4 HampshireWV
0.7 No
10/210115
5620 Subdivision 12.7 BerkeleyWV
0.7 No
10/210115
6240 Subdivision 15.1 AlbemarleVA
0.7 No
10/210130
5885 Subdivision 9.6 ShenandoahVA
0.7 Yes / 0430
10/210230
6184 Subdivision 20.0 GreeneVA
0.8 No
10/210235
6144 Subdivision 9.8 MadisonVA
0.9 Yes / 0430
10/210250
5886 Subdivision 30.0 WarrenVA
0.7 Yes / 0330
10/210300
5966 Subdivision 13.1 PageVA
0.7 Yes / 0330
10/210315
5969 Subdivision 21.0 RappahannockVA
0.9 No
10/210330
6192 Subdivision 12.7 SpotsylvaniaVA
0.8 No
10/210340
5718 Subdivision 14.9 JeffersonWV
0.9 No
10/210355
6109 Subdivision 10.5 OrangeVA
0.8 No
10/210400
57565773
Subdivision“
12.710.0
ClarkeVA
0.70.7
No
136
10/210405
6638 Subdivision 3.9 LoudounVA
0.7 No
10/210410
6060 Subdivision 9.9 FauquierVA
0.7 No
10/210415
6664 Subdivision 1.5 FairfaxVA
0.7 No
10/210455
573157465775
Subdivision““
19.29.916.1
MontgomeryMD
1.20.80.8
No
10/210455
5645565457056587659666166864
Subdivision““““““
10.313.115.63.16.76.985.2
FrederickMD
0.70.80.70.90.81.20.8
No
10/210505
5873 Subdivision 34.7 Prince WilliamVA
0.7 No
10/210615
5729 Subdivision 9.5 HowardMD
1.1 No
10/210715
6166 Subdivision 14.9 King GeorgeVA
1.0 No
10/210720
5529 Subdivision 9.3 HarfordMD
0.9 No
10/210725
6078 Subdivision 39.3 CharlesMD
1.0 No
10/210805
5990 Subdivision 9.8 Prince George’sMD
0.8 No
137
Figure G1. KLWX 3-hour Precipitation Image: 10/20/95 2300 - 10/21/95 0200 UTC.
138
Figure G2. KLWX 3-hour Precipitation Image: 10/21/95 0300-0600 UTC.
139
Figure G3. KLWX 3-hour Precipitation Image: 10/21/95 0600-0900 UTC.
140
Figure G4. KLWX Storm Total Precipitation Image: 10/20/95 1732 - 10/21/95 1018 UTC.
141
Figure G5.
142
Figure G6.
143
Figure G7.
144
APPENDIX H
Sterling Case Study #3 - January 19, 1996
DATA AND FIGURES
Januaryur andaled or
145
Table H1. The first basin(s) in each county where ABR rate equaled or exceeded 0.5 inches/hour during the19, 1996 event according to KLWX data. The ABR rate shown is the first rate to equal or exceed 0.5 inches/hois not necessarily the peak rate during the event. The date and time (in UTC) indicate when ABR rate first equexceeded 0.5 inches/hour, and flash flood verification is based on reports inStorm Data.
Date /Time
BasinID(s)
BasinType
DrainageArea (mi2)
County ABR Rate(inches/hour)
Flash FloodReported / Time
01/191015
5562 Subdivision 72.7 AlleganyMD
0.6 Yes / 0800
01/191040
58186643
Subdivision“
10.68.3
GrantWV
0.60.5
Yes / 0800
01/191045
5700 Subdivision 19.2 MineralWV
0.5 Yes / 0800
01/191105
5935 Subdivision 16.6 HardyWV
0.5 Yes / 0900
01/191115
5588 Subdivision 14.9 HampshireWV
0.5 Yes / 0900
01/191130
5888 Subdivision 24.4 ShenandoahVA
0.5 Yes / 1000
01/191140
63076760
Subdivision“
9.944.9
NelsonVA
0.70.5
Yes / 0630
01/191140
6179 Subdivision 18.8 AugustaVA
0.5 Yes / 0630
01/191215
5924 Subdivision 10.2 PendletonWV
0.5 Yes / 0900
01/191300
6301 Subdivision 13.9 AlbemarleVA
0.5 Yes / 0630
01/191330
552855851123
Subdivision“Primary
10.444.4147.0
MorganWV
1.20.50.5
Yes / 1000
01/191330
568157085779
Subdivision““
12.338.717.4
FrederickVA
0.50.50.6
Yes / 1000
01/191340
6157 Subdivision 38.4 OrangeVA
1.0 Yes / 1300
01/191340
596659741228
Subdivision“Primary
13.119.334.9
PageVA
0.50.50.5
Yes / 0630
01/191340
61386146
Subdivision 12.430.9
MadisonVA
0.60.6
Yes / 0630
01/191340
6814 Subdivision 27.2 WashingtonMD
0.8 Yes / 1000
01/191345
554855595620
Subdivision““
20.726.712.7
BerkeleyWV
0.60.50.7
Yes / 1100
146
01/191345
5883 Subdivision 14.2 WarrenVA
0.6 Yes / 1100
01/191410
59275939
Subdivision“
9.615.6
FauquierVA
0.60.6
Yes / 1200
01/191410
5679 Subdivision 8.9 JeffersonWV
0.7 Yes / 1100
01/191410
5726 Subdivision 9.0 ClarkeVA
0.8 Yes / 1100
01/191410
5998 Subdivision 16.9 CulpeperVA
1.1 Yes / 1300
01/191420
6114616161746192619661996204
Subdivision““““““
19.349.315.912.79.741.018.3
SpotsylvaniaVA
1.10.60.70.80.80.70.6
Yes / 1500
01/191425
579558116647119513871425
Subdivision““Primary““
21.423.48.155.050.1336.4
LoudounVA
0.60.50.70.50.70.7
Yes / 1200
01/191425
589259516677
Subdivision““
33.923.976.1
Prince WilliamVA
0.50.60.5
Yes / 1400
01/191435
6061 Subdivision 15.5 StaffordVA
1.0 Yes / 1500
01/191445
58635898666468371393
Subdivision“““Primary
46.69.31.541.061.7
FairfaxVA
0.60.90.70.90.7
Yes / 1400
01/191445
555856645714
Subdivision““
21.017.011.2
FrederickMD
0.50.60.6
Yes / 1200
01/191455
5780 Subdivision 12.7 MontgomeryMD
0.5 Yes / 1400
01/191515
5694 Subdivision 28.7 HowardMD
0.5 Yes / 1400
01/191515
559665826821
Subdivision““
23.227.51.4
CarrollMD
0.50.70.9
Yes / 1200
01/191515
6053606960786682
Subdivision“““
22.313.139.349.2
CharlesMD
0.81.00.50.6
No
147
01/191515
6655 Subdivision 7.5 Prince George’sMD
0.7 Yes / 1500
01/191515
5895 Subdivision 20.6 ArlingtonVA
1.2 Yes / 1600
01/191520
61316166
Subdivision“
23.614.9
King GeorgeVA
1.00.8
No
01/191535
6835 Subdivision 29.1 District ofColumbia
1.0 Yes / 1600
01/191540
5648 Subdivision 9.1 BaltimoreMD
0.5 Yes / 1400
01/191550
61016104
Subdivision“
36.230.6
St. Mary’sMD
0.90.7
No
01/191610
5697 Subdivision 38.3 Baltimore CityMD
0.9 Yes / 1600
01/191610
5920 Subdivision 12.3 Anne ArundelMD
0.5 Yes / 1600
01/191615
59736017604160646086
Subdivision““““
21.026.713.613.923.8
CalvertMD
0.70.91.20.80.6
No
01/191615
55575631
Subdivision“
12.656.3
HarfordMD
0.70.6
Yes / 1400
148
Figure H1. KLWX 3-hour Precipitation Image: 01/19/96 0900-1200 UTC.
149
Figure H2. KLWX 3-hour Precipitation Image: 01/19/96 1200-1500 UTC.
150
Figure H3. KLWX 3-hour Precipitation Image: 01/19/96 1500-1800 UTC.
151
Figure H4. KLWX Storm Total Precipitation Image: 01/19/96 0406-1915 UTC.
152
Figure H5.
153
APPENDIX I
Sterling Case Study #4 - July 1-2, 1997
DATA AND FIGURES
uly 1-2,r and isaled or
154
Table I1. The first basin(s) in each county where ABR rate equaled or exceeded 0.6 inches/hour during the J1995 event according to KLWX data. The ABR rate shown is the first rate to equal or exceed 0.6 inches/hounot necessarily the peak rate during the event. The date and time (in UTC) indicate when ABR rate first equexceeded 0.6 inches/hour, and flash flood verification is based on reports inStorm Data.
Date /Time
BasinID(s)
BasinType
DrainageArea (mi2)
County ABR Rate(inches/hour)
Flash FloodReported / Time
07/020040
61406150
Subdivision“
44.127.8
GreeneVA
0.60.6
Yes / 0200
07/020115
66696670
Subdivision“
9.520.7
FauquierVA
0.60.6
No
07/020105
6096 Subdivision 13.9 MadisonVA
0.6 Yes / 0200
07/020315
6713 Subdivision 83.2 OrangeVA
0.7 Yes / 0300
07/020645
6183 Subdivision 15.8 SpotsylvaniaVA
0.6 No
07/020715
6085 Subdivision 57.6 StaffordVA
0.6 No
07/020815
6104 Subdivision 30.6 St. Mary’sMD
0.6 No
155
Figure I1. KLWX 3-hour Precipitation Image: 07/01/97 2300 - 07/02/97 0200 UTC.
156
Figure I2. KLWX 3-hour Precipitation Image: 07/02/97 0200-0500 UTC.
157
Figure I3. KLWX 3-hour Precipitation Image: 07/02/97 0500-0800 UTC.
158
Figure I4. KLWX Storm Total Precipitation Image: 07/02/97 0921-1113 UTC.
159
Figure I5.
160
Figure I6.