APPENDIX A Tulsa Case Study #1 - January 4, 1998 … › projects › basins › appendices.pdfTulsa...

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


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


53


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)



09/140340


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


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


66


67


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


10/051333


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


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)



10/050815

5708 Subdivision 21.3 BentonAR

1.5 Yes / 1030

10/050815


1.5 Yes / 1200

10/050830


1.5 Yes / 1100

10/051115

6211 Subdivision 13.1 OkfuskeeOK

1.9 Yes / 1400

10/051200


1.8 Yes / 1230

10/051500

60926117

Subdivision“

13.311.6

AdairOK

1.61.6

Yes / 1700

10/051510


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


76


77


78


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)



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)



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


1.8 Yes / 1430

91

Figure D1. KINX 3-hour Precipitation Image: 04/25/99 1200-1500 UTC.

92


93


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)



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


2.52 / 2.50 / 3-hr Yes / 0945

06/201421


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)



06/200845

5796 Subdivision 11.2 MayesOK

1.7 Yes / 1045

06/200850


1.7 Yes / 0945

06/201405


1.5 Yes / 1300

105

Figure E1. KINX 3-hour Precipitation Image: 06/20/99 0400-0700 UTC.

106


107


108


109


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)



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)



06/270630


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


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


123


124


125


126

Figure F6. KLWX 3-hour Precipitation Image: 06/27/95 2200 - 06/28/95 0100 UTC.

127


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)



10/202315


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


0.7 No

10/210130

5885 Subdivision 9.6 ShenandoahVA

0.7 Yes / 0430

10/210230


0.8 No

10/210235


0.9 Yes / 0430

10/210250


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


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


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)



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


0.5 Yes / 0630

01/191330

552855851123


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


1.0 Yes / 1300

01/191340

596659741228


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


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


150


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)



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


0.6 Yes / 0200

07/020315


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.

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