Oklahoma, 2007

Tornadoes and Flash Flooding in Oklahoma, August 18 to 19, 2007

August 18 to 19, 2007 · NWS OUN · 72 events in 17 counties and zones

Tropical Storm Erin, the fifth named storm of the 2007 Atlantic Hurricane season, developed quickly over the northeast Gulf of Mexico on the 15th, before moving onshore during the morning hours of the 16th. Erin moved onshore near Lamar, TX as a weak tropical storm, but was quickly downgraded to a tropical depression as it moved over land.

Where it happened

Every event with a place to put it. Tap one for its entry below.

  • Tornadoes
  • Tropical storms and surge
  • Floods
  • Wind
  • Hail
  • Winter weather
  • Heat and drought
  • Cold
  • Fire, smoke and dust
  • Marine and coastal
  • Other

Open the live radar over this ground

The toll

Deaths
6
Injuries
3
Property damage
$5.2 million
Crop damage
None recorded
Events
72

Deaths and injuries are direct and indirect together, as the offices filed them. Damage is property and crops in the dollars of the year, not adjusted for inflation, and only where an office estimated it.

What happened

The episode as NWS OUN wrote it up.

Tropical Storm Erin, the fifth named storm of the 2007 Atlantic Hurricane season, developed quickly over the northeast Gulf of Mexico on the 15th, before moving onshore during the morning hours of the 16th. Erin moved onshore near Lamar, TX as a weak tropical storm, but was quickly downgraded to a tropical depression as it moved over land. The tropical depression moved northwest over the Edwards Plateau toward west Texas. Erin maintained her depression status as it then began to move northeast into southwest Oklahoma between Hollis and Erick during the afternoon hours of Saturday, August 18th. A very tropical airmass was in place along and east of this feature, extending into western and central Oklahoma. Heavy rainfall developed along and east of the center, which moved slowly to the northeast. Low-level wind shear north and east of Erin increased throughout the evening, with several tornadoes reported in Kiowa, Washita, and Grady counties during the late afternoon and early evening hours. Damage was reported east of Hobart, and in Washita county south and east of Cordell. As the evening progressed, a strong low-level jet developed, with additional thunderstorms developing over southwest and central Oklahoma. Remarkably, the center of the tropical depression strengthened between 1 and 7 AM, with a compact area of sustained winds of 35 to 45 MPH concentrated around the center of the depression. Wind gusts of 50 to 80 mph were also reported over parts of central Oklahoma at this time. As with the wind speeds, thunderstorms intensities increased, with two additional tornadoes reported over central Oklahoma Sunday morning. In addition to tornadoes and very strong winds, rainfall rates of over three inches per hour were common, with significant flash flooding reported in numerous counties. Rainfall amounts exceeded five inches over a large area, with some locations receiving eight to ten inches. Rivers and creeks easily exceeded their banks, with water also rising quickly in many towns. Dozens of people were rescued by boat and helicopter as numerous homes and businesses quickly took on water. Unfortunately, six people lost their lives due to the flooding. Monetary values were estimated.

What forecasters said that day

The local office's own words before the first event, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.

NWS Norman, OK wrote its last area forecast discussion before the first event at Aug 18, 12:56 PM CST, 2 hours 50 minutes earlier.

Area forecast discussion, Aug 18, 12:56 PM CST, 2 hours 50 minutes before
AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE NORMAN OK
156 PM CDT SAT AUG 18 2007

.SHORT TERM...
LOW-LEVEL CENTER OF T.D. ERIN REMAINS WELL DEFINED IN SFC/RADAR/
SATELLITE DATA FIELDS. SYSTEM LIKELY TO REMAIN STRONGER AND MORE
CONCENTRATED AT LOW LEVELS THAN MOST IF NOT ALL OF THE MODEL
PROGS. DIURNAL CONVECTION TO CONTINUE THIS EVENING E/NE OF CENTER
WHERE PW VALUES REMAIN AOA 2 INCHES. TYPICAL DAY/NIGHT TRENDS
SUGGEST THIS CONVECTION WILL LESSEN IN COVERAGE/INTENSITY THIS
EVENING BEFORE REDEVELOPING OVERNIGHT IN A MORE CONCENTRATED AREA
SOMEWHERE NEAR THE CENTER. LATTER MOST LIKELY TO BE IN THE SW
QUADRANT OF OK BUT EXACT LOCATION HARD TO PIN DOWN. CONSIDERED
EXPANDING FLASH FLOOD WATCH E/NE TOWARD CENTRAL OK... BUT WITH
EXPECTED CONTRACTION OF HEAVIER PRECIP CLOSER TO THE CENTER
OVERNIGHT WE WILL LEAVE THE WATCH AREA INTACT. LATER SHIFTS MAY
NEED TO EXPAND WATCH DEPENDING ON PRECIP TRENDS THIS EVENING AND
OVERNIGHT. POPS ARE INCREASED MAINLY SW OVERNIGHT... BUT LIKELY
POPS AND LOCALLY HEAVY RAIN ARE EXPANDED E/NE INTO CENTRAL OK. POPS
ON SUN ARE INCREASED TO LIKELY OVER MUCH OF THE HEART OF THE
CWA... BENEATH THE SLOW-MOVING LOW/MID LEVEL CENTER... ALONG WITH
CONTINUED MENTION OF LOCALLY HEAVY RAIN GIVEN TROPICAL NATURE OF
BOTH AIRMASS AND THE RESPONSIBLE SYSTEM. WILL FOLLOW THE HPC 6-H
QPF CLOSELY. HIGH TEMPS LOWERED DUE TO CLOUDS/PRECIP BUT LOWS
EXPECTED TO REMAIN ON THE WARMER SIDE DUE TO LOW-LEVEL
WINDS/CLOUDS/MOISTURE.

.LONG TERM...
NOT MUCH CHANGE TO FORECAST FOR MON AND BEYOND. CHANGING OF THE
GUARD EARLY NEXT WEEK - SO TO SPEAK - AS ERIN REMNANTS PROCEED E
WHILE CURRENT S-FL UPPER LOW MOVES W TOWARD TX. NET RESULT FOR S
PLAINS IS PERSISTING BREAK IN THE SUBTROPICAL RIDGE... WHICH LEADS
TO HIGH TEMPS BEING KEPT A LITTLE BELOW CLIMATOLOGY. DESPITE THE
BREAK IN THE UPPER RIDGE OVERHEAD... PRECIP CHANCES APPEAR LIMITED
DUE TO LACK OF A FRONT OR OTHER FOCUSING MECHANISM.

CURRENT TPC/HPC PROJECTIONS OF MAJOR HURRICANE DEAN INDICATE THE
STORM - AND ATTENDANT EFFECTS - WILL REMAIN S OF HERE THROUGH AT
LEAST NEXT SAT. THERE IS SOME CONCERN THAT THE W-WARD MOVING UPPER
LOW AHEAD OF THE HURRICANE COULD BE THE WILD CARD AND ALTER THE
MID- LEVEL STEERING FLOW AHEAD OF DEAN ENOUGH TO NUDGE IT A TAD
FARTHER N. THIS IS NOT SEEN IN THE CURRENT MODEL DATA THOUGH...
AND THUS IT APPEARS LIKELY AT THIS TIME THAT ANY AFFECT ON THE
OK/NTX AREA WOULD BE LIMITED TO REMNANTS OF THE STORM RECURVING
AND COMING BACK ACROSS EARLY IN THE WEEK OF 26 AUG. REFER TO
LATEST FORECASTS AND DISCUSSIONS BEING ISSUED BY TPC/NHC.

&&

.PRELIMINARY POINT TEMPS/POPS...
OKLAHOMA CITY OK  73  86  73  91 /  60  60  30  10
HOBART OK         72  85  74  93 /  90  60  20  10
WICHITA FALLS TX  75  88  76  93 /  80  60  20  10
GAGE OK           71  89  72  95 /  50  30  10  10
PONCA CITY OK     73  88  75  92 /  50  50  30  10
DURANT OK         74  92  73  92 /  40  40  20  10

&&

.OUN WATCHES/WARNINGS/ADVISORIES...
OK...FLASH FLOOD WATCH THROUGH SUNDAY MORNING FOR OKZ021-022-033>038-
     044.

TX...FLASH FLOOD WATCH THROUGH SUNDAY MORNING FOR TXZ083>089.

&&

30/24
Hazardous weather outlook, Aug 18, 10:55 AM CST, 4 hours 51 minutes before
HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE NORMAN OK
1155 AM CDT SAT AUG 18 2007

OKZ004>048-050>052-TXZ083>090-191200-
HARPER-WOODS-ALFALFA-GRANT-KAY-ELLIS-WOODWARD-MAJOR-GARFIELD-NOBLE-
ROGER MILLS-DEWEY-CUSTER-BLAINE-KINGFISHER-LOGAN-PAYNE-BECKHAM-
WASHITA-CADDO-CANADIAN-OKLAHOMA-LINCOLN-GRADY-MCCLAIN-CLEVELAND-
POTTAWATOMIE-SEMINOLE-HUGHES-HARMON-GREER-KIOWA-JACKSON-TILLMAN-
COMANCHE-STEPHENS-GARVIN-MURRAY-PONTOTOC-COAL-COTTON-JEFFERSON-
CARTER-JOHNSTON-ATOKA-LOVE-MARSHALL-BRYAN-HARDEMAN-FOARD-WILBARGER-
WICHITA-KNOX-BAYLOR-ARCHER-CLAY-
1155 AM CDT SAT AUG 18 2007

THIS HAZARDOUS WEATHER OUTLOOK COVERS NORTHERN...WESTERN...
CENTRAL...AND SOUTHERN OKLAHOMA...AND WESTERN NORTH TEXAS.

.DAY ONE...THIS AFTERNOON AND TONIGHT...

THUNDERSTORM OUTLOOK...
ISOLATED STRONG THUNDERSTORMS ARE POSSIBLE.

DISCUSSION...
WIDESPREAD SHOWERS WILL CONTINUE TO MOVE INTO OKLAHOMA AND NORTH
TEXAS AS TROPICAL DEPRESSION ERIN MOVES TOWARD THE AREA FROM WEST
TEXAS. SHOWERS WILL BE MOST WIDESPREAD ACROSS WESTERN NORTH TEXAS
AND WESTERN OKLAHOMA. THE PRIMARY CONCERN WILL BE LOCALLY HEAVY
RAINFALL WITH THE VERY EFFICIENT RAIN PRODUCING SHOWERS IN THE
TROPICAL AIRMASS. ISOLATED STRONG THUNDERSTORMS WILL BE POSSIBLE
THIS AFTERNOON... BUT INSTABILITY WILL REMAIN LIMITED AND NO
ORGANIZED AREA OF STRONG OR SEVERE WEATHER IS EXPECTED.

PROBABILITY TABLE...
VALID THROUGH 700 AM CDT SUNDAY AUG 19.
PROBABILITY OF THUNDERSTORMS OCCURRING IN THE
              NWS NORMAN COUNTY WARNING AREA...100 PERCENT.
PROBABILITY OF SEVERE STORMS IF STORMS OCCUR...10 PERCENT.

OTHER HAZARDOUS WEATHER...
HEAVY RAINFALL WILL LIKELY OCCUR ACROSS PORTIONS OF SOUTHWEST
OKLAHOMA AND PORTIONS OF WESTERN NORTH TEXAS... WHICH COULD LEAD TO
FLASH FLOODING. FOR ADDITIONAL INFORMATION SEE THE FLASH FLOOD WATCH
PRODUCT.

.DAYS TWO THROUGH SEVEN...SUNDAY THROUGH FRIDAY...

THUNDERSTORM OUTLOOK...
THE REMAINS OF TROPICAL STORM ERIN ARE EXPECTED TO CONTINUE
PRODUCING SHOWERS AND ISOLATED THUNDERSTORMS OVER THE AREA THROUGH
THE WEEKEND.

OTHER HAZARDOUS WEATHER...
ALTHOUGH TEMPERATURES WILL NOT BE AS HOT THIS WEEKEND WITH THE
CLOUDS AND SHOWERS ASSOCIATED WITH THE REMNANTS OF TROPICAL STORM
ERIN...TEMPERATURES ARE EXPECTED TO BE QUITE WARM AGAIN OVER THE
EARLY AND MIDDLE PART OF NEXT WEEK. HEAT INDEX READINGS WILL ONCE
AGAIN REACH THE 100 TO 105 RANGE OVER PORTIONS OF OKLAHOMA AND NORTH
TEXAS TUESDAY AND WEDNESDAY.

THE NEXT SCHEDULED HAZARDOUS WEATHER OUTLOOK WILL BE ISSUED AT 7 AM
SUNDAY.

30

In the hours before

Special weather statement, Aug 18, 1:16 PM CST, 2 hours 30 minutes before
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE NORMAN OK
216 PM CDT SAT AUG 18 2007

OKZ024-025-027>029-181945-
CANADIAN OK-OKLAHOMA OK-CLEVELAND OK-GRADY OK-MCCLAIN OK-
216 PM CDT SAT AUG 18 2007

...SIGNIFICANT WEATHER ADVISORY...

THIS SIGNIFICANT WEATHER ADVISORY IS FOR CANADIAN...CLEVELAND...
GRADY...MCCLAIN AND OKLAHOMA COUNTIES.

A LINE OF STRONG THUNDERSTORMS WAS LOCATED FROM SPENCER TO EXTREME
WESTERN OKLAHOMA CITY AT 216 PM CDT... WHILE ANOTHER LINE OF STRONG
THUNDERSTORMS WAS LOCATED FROM NEAR PURCELL AND NOBLE WEST TO
BLANCHARD... NEWCASTLE... TUTTLE AND MINCO. ALL THIS ACTIVITY WAS
MOVING NORTH AT 20 MPH.

THESE STORMS WILL PRODUCE BRIEF... BUT VERY HEAVY RAIN WHICH WILL
RESTRICT VISIBILTIES IN SOME INSTANCES TO AROUND 1/4 OF A MILE. WIND
GUSTS TO 45 MPH AND FREQUENT LIGHTNING WILL ALSO ACCOMPANY THESE
STORMS.

PEOPLE IN CANADIAN...CLEVELAND...GRADY...MCCLAIN AND OKLAHOMA
COUNTIES...INCLUDING THE CITIES OF DEL CITY...EDMOND...MIDWEST
CITY...MOORE...NORMAN AND OKLAHOMA CITY...SHOULD MONITOR THE WEATHER
SITUATION CLOSELY.

30
Special weather statement, Aug 18, 3:35 PM CST, 11 minutes before
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE NORMAN OK
435 PM CDT SAT AUG 18 2007

OKZ028-029-040-182200-
CLEVELAND OK-MCCLAIN OK-GARVIN OK-
435 PM CDT SAT AUG 18 2007

...SIGNIFICANT WEATHER ADVISORY...

THIS SIGNIFICANT WEATHER ADVISORY IS FOR CLEVELAND...GARVIN AND
MCCLAIN COUNTIES.

A STRONG THUNDERSTORM WAS LOCATED 3 MILES NORTHWEST OF PAOLI AT 435
PM CDT...MOVING NORTH AT 20 MPH. THIS STORM WILL BE CAPABLE OF
PRODUCING VERY HEAVY RAIN THAT COULD CAUSE PONDING ON AREA ROADWAYS
AND REDUCE VISIBILITIES. WIND GUSTS TO 40 MPH AND BRIEF FUNNEL
CLOUDS ARE ALSO POSSIBLE. NO SEVERE WEATHER IS EXPECTED.

MAXWELL

The radar

The Altus AFB radar (KFDR), 70 km away, was scanning. The volume nearest the first event began at 21:47 UTC.

Open the radar archive at this moment

Event by event

29 thunderstorm wind, 25 flash flood, 10 heavy rain, 7 tornado, 1 lightning. Local standard time, as filed.

Tornado, Kiowa

When
August 18, 3:46 PM CST to 3:57 PM CST
Where
Kiowa County, 5.5 mi ESE of Hobart to 6 mi NE of Hobart
Rating
EF1
Path length
6 mi
Path width
50 yd
Property damage
$50,000
Reported by
Emergency Manager
Coordinates
34.990, -99.010

A tornado touched down to the east-southeast of Hobart and moved north. The tornado destroyed a large barn, and damaged power lines, numerous trees and farm implements. Monetary damages were estimated.

Tornado, Washita

When
August 18, 4:10 PM CST to 4:20 PM CST
Where
Washita County, 10 mi SSE of Cordell to 6 mi SSE of Cordell
Rating
EF0
Path length
4 mi
Path width
30 yd
Reported by
Fire Department/Rescue
Coordinates
35.166, -98.912

The tornado was reported by the Cordell fire chief. The tornado lasted approximately 10 minutes. No damage was reported.

Tornado, Grady

When
August 18, 7:44 PM CST to 7:48 PM CST
Where
Grady County, 1.98 mi SSW of Norge to 1.76 mi E of Laverty
Rating
EF1
Path length
2 mi
Path width
30 yd
Property damage
$15,000
Reported by
Other Federal Agency
Coordinates
34.954, -98.013

A tornado damaged a mobile home and several trees were snapped southwest of Norge. Monetary damages were estimated.

Flash Flood, Caddo

When
August 18, 9:55 PM CST to August 19, 12:30 AM CST
Where
Caddo County, Cyril
Cause
Heavy Rain
Reported by
Fire Department/Rescue
Coordinates
34.880, -98.200

One foot of water was reported over the road at the junction of HWY 277 and HWY 19.

Flash Flood, Kiowa

When
August 18, 9:55 PM CST to August 19, 12:30 AM CST
Where
Kiowa County, Hobart
Cause
Heavy Rain
Reported by
Emergency Manager
Coordinates
35.020, -99.100

Business HWY 9 was closed due to high water.

Flash Flood, Kiowa

When
August 18, 9:55 PM CST to August 19, 12:30 AM CST
Where
Kiowa County, Mountain View
Cause
Heavy Rain
Reported by
Emergency Manager
Coordinates
35.100, -98.750

HWY 9 between Mountain View and Carnegie was closed due to high water.

Flash Flood, Comanche

When
August 18, 10:00 PM CST to August 19, 3:30 AM CST
Where
Comanche County, Lawton
Cause
Heavy Rain
Property damage
$200,000
Reported by
Newspaper
Coordinates
34.620, -98.400

The bridge at Bemel Road was severely damaged. Also, several county roads and bridges in and around Fletcher were closed due to high water. Monetary damages were estimated.

Thunderstorm Wind, Caddo

When
August 18, 11:10 PM CST
Where
Caddo County, 7 mi SW of Ft Cobb
Measured
61 kt (70 mph) measured gust
Property damage
$4,000
Reported by
Amateur Radio
Coordinates
35.028, -98.517

A shed was heavily damaged by the high wind. The high wind also caused minor damage to the spotter's home. Monetary damages were estimated.

Thunderstorm Wind, Caddo

When
August 18, 11:10 PM CST
Where
Caddo County, 6 mi S of Ft Cobb
Measured
61 kt (70 mph) measured gust
Reported by
Trained Spotter
Coordinates
35.013, -98.430

Flash Flood, Kiowa

When
August 18, 11:19 PM CST to August 19, 12:30 AM CST
Where
Kiowa County, 2 mi W of Mountain View
Cause
Heavy Rain
Reported by
Emergency Manager
Coordinates
35.100, -98.785

The county emergency manager reported water four-feet deep over HWY 9. Numerous other roads in Gotebo, Hobart, and Mountain View are closed due to very high water.

Thunderstorm Wind, Caddo

When
August 18, 11:20 PM CST
Where
Caddo County, 4 mi NNW of Ft Cobb
Measured
52 kt (60 mph) measured gust
Reported by
Mesonet
Coordinates
35.153, -98.457

Thunderstorm Wind, Caddo

When
August 18, 11:25 PM CST
Where
Caddo County, 4 mi NNW of Ft Cobb
Measured
65 kt (75 mph) measured gust
Property damage
$10,000
Reported by
Mesonet
Coordinates
35.153, -98.457

A cottonwood tree was blown down and fell over a road in Fort Cobb. Other tree damage was noted across the county. Monetary damages were estimated.

Flash Flood, Caddo

When
August 18, 11:26 PM CST to August 19, 12:30 AM CST
Where
Caddo County, 4 mi S of Carnegie
Cause
Heavy Rain
Deaths
3 direct, 0 indirect
Property damage
$10,000
Reported by
Amateur Radio
Coordinates
35.042, -98.600

A van carrying three women was washed off of HWY 58 south of Carnegie as torrential rain fell for several hours. Unfortunately, all three women perished as their vehicle was washed downstream. Another car was washed off the roadway six miles south of Carnegie. No injuries were reported with this accident. Monetary damages were estimated.

Thunderstorm Wind, Caddo

When
August 18, 11:30 PM CST
Where
Caddo County, 4 mi NNW of Ft Cobb
Measured
56 kt (64 mph) measured gust
Reported by
Mesonet
Coordinates
35.153, -98.457

Flash Flood, Caddo

When
August 18, 11:30 PM CST to August 19, 6:30 AM CST
Where
Caddo County, Anadarko
Cause
Heavy Rain
Deaths
1 direct, 0 indirect
Property damage
$100,000
Reported by
Emergency Manager
Coordinates
35.070, -98.250

High winds and torrential rainfall pounded much of Caddo overnight, with widespread flash flooding reported. While seeking shelter from the severe weather, an elderly lady drowned while in her storm shelter. A car carrying a mother and her two children was swept off the roadway, but all three were rescued without injury. In Fort Cobb, a truck was swept off of HWY 146. The driver was able to escape without injury. One hundred homes sustained at least minor damage. Several of these sustained significant damage. In addition to the numerous streets that were closed in Caddo county, 150 bridges also had to be closed. Monetary damages were estimated.

Thunderstorm Wind, Caddo

When
August 18, 11:35 PM CST
Where
Caddo County, 4 mi NNW of Ft Cobb
Measured
54 kt (62 mph) measured gust
Reported by
Mesonet
Coordinates
35.153, -98.457

Thunderstorm Wind, Caddo

When
August 18, 11:35 PM CST
Where
Caddo County, 4 mi ENE of Apache
Measured
54 kt (62 mph) measured gust
Reported by
Mesonet
Coordinates
34.902, -98.305

Thunderstorm Wind, Caddo

When
August 18, 11:40 PM CST
Where
Caddo County, 4 mi NNW of Ft Cobb
Measured
56 kt (64 mph) measured gust
Reported by
Mesonet
Coordinates
35.153, -98.457

Thunderstorm Wind, Blaine

When
August 19, 12:15 AM CST
Where
Blaine County, 7 mi W of Watonga
Measured
54 kt (62 mph) measured gust
Reported by
Mesonet
Coordinates
35.850, -98.545

Thunderstorm Wind, Blaine

When
August 19, 12:20 AM CST
Where
Blaine County, 7 mi W of Watonga
Measured
53 kt (61 mph) measured gust
Reported by
Mesonet
Coordinates
35.850, -98.545

Thunderstorm Wind, Blaine

When
August 19, 12:25 AM CST
Where
Blaine County, 7 mi W of Watonga
Measured
56 kt (64 mph) measured gust
Reported by
Mesonet
Coordinates
35.850, -98.545

Thunderstorm Wind, Caddo

When
August 19, 12:30 AM CST
Where
Caddo County, 7 mi W of Hinton
Measured
56 kt (64 mph) measured gust
Reported by
Newspaper
Coordinates
35.470, -98.474

Thunderstorm Wind, Custer

When
August 19, 12:30 AM CST
Where
Custer County, Thomas
Measured
56 kt (64 mph) estimated gust
Property damage
$10,000
Reported by
Newspaper
Coordinates
35.750, -98.750

A large tree was knocked over and minor damage occurred to an airplane hangar due to the strong winds. Monetary damages were estimated.

Thunderstorm Wind, Blaine

When
August 19, 12:40 AM CST
Where
Blaine County, Watonga
Measured
51 kt (59 mph) measured gust
Reported by
AWOS
Coordinates
35.850, -98.420

The wind gust was measured at KJWG.

Thunderstorm Wind, Blaine

When
August 19, 12:49 AM CST
Where
Blaine County, Watonga
Measured
70 kt (81 mph) estimated gust
Reported by
NWS Storm Survey
Coordinates
35.850, -98.420

Tornado, Caddo

When
August 19, 1:00 AM CST to 1:05 AM CST
Where
Caddo County, 1.7 mi ENE of Cogar to 3.4 mi NNE of Cogar
Rating
EF0
Path length
2.5 mi
Path width
30 yd
Continued into
Canadian, Ok (OUN)
Property damage
$5,000
Reported by
NWS Storm Survey
Coordinates
35.339, -98.102

Tree damage was noted from a tornado that moved north in the northeast corner of Caddo County to the northeast of Cogar. The damage path indicated that the tornado crossed into Canadian County about 0.3 miles west of the Canadian/Caddo/Grady county intersection. Monetary damages were estimated.|

Flash Flood, Blaine

When
August 19, 1:00 AM CST to 7:00 AM CST
Where
Blaine County, Watonga
Cause
Heavy Rain
Property damage
$1.0 million
Reported by
Newspaper
Coordinates
35.850, -98.420

Heavy rain and high winds pounded most areas in Blaine county. Rainfall amounts of 5 to 8 inches resulted in widespread flash flooding. In Watonga, the American Horse Road was washed out by the Hal Geyner Farm. One hundred and twenty four residences had minor flood damage, 21 suffered major damage, and five homes were destroyed. At Greenfield, 13 residences had minor flood damage and two had major damage. At Hitchcock, one residence had minor damage. Numerous city and county roads had to be closed due to widespread flash flooding. Monetary damages were estimated.

Tornado, Canadian

When
August 19, 1:05 AM CST to 1:06 AM CST
Where
Canadian County, 9 mi W of Union City
Rating
EF0
Path length
0.5 mi
Path width
30 yd
Property damage
$5,000
Reported by
NWS Storm Survey
Coordinates
35.380, -98.090

A tornado that developed in northeastern Caddo County moved north into Canadian County about 0.3 miles west of the Canadian/Caddo/Grady County intersection. The tornado moved north about one half mile damaging trees before dissipating. Monetary damages were estimated.

Thunderstorm Wind, Blaine

When
August 19, 1:25 AM CST
Where
Blaine County, 7 mi W of Watonga
Measured
63 kt (72 mph) measured gust
Reported by
Newspaper
Coordinates
35.850, -98.545

Tornado, Grady

When
August 19, 1:32 AM CST to 1:38 AM CST
Where
Grady County, 1 mi ESE of Minco to 4.5 mi N of Minco
Rating
EF1
Path length
5 mi
Path width
75 yd
Continued into
Canadian, Ok (OUN)
Property damage
$45,000
Reported by
NWS Storm Survey
Coordinates
35.315, -97.914

A tornado touched down just southeast of the center of the town of Minco and moved through the eastern portion of the town. At least four mobile homes in Minco were damaged, with one losing a significant portion of the exterior walls and roof. Trees were also damaged along the path as the tornado moved north crossing the Canadian River into Canadian County. Monetary damages were estimated.

Tornado, Canadian

When
August 19, 1:38 AM CST to 1:41 AM CST
Where
Canadian County, 1 mi SSE of Union City to 1 mi N of Union City
Rating
EF1
Path length
2 mi
Path width
75 yd
Property damage
$5,000
Reported by
NWS Storm Survey
Coordinates
35.367, -97.923

Tree damage continued as the tornado moved north from Grady County into Canadian County between Union City and Minco. The tornado moved just east of the immediate Union City area and then dissipated about a mile north of Union City. Monetary damages were estimated.

Thunderstorm Wind, Canadian

When
August 19, 1:40 AM CST
Where
Canadian County, 1 mi S of Union City
Measured
70 kt (81 mph) estimated gust
Reported by
Trained Spotter
Coordinates
35.365, -97.930

The wind gust was reported on hwy 81.

Thunderstorm Wind, Canadian

When
August 19, 1:40 AM CST
Where
Canadian County, 1 mi S of Union City
Measured
70 kt (81 mph) estimated gust
Reported by
Trained Spotter
Coordinates
35.365, -97.930

The wind gust was reported off of HWY 81.

Thunderstorm Wind, Blaine

When
August 19, 1:54 AM CST
Where
Blaine County, Watonga
Measured
71 kt (82 mph) measured gust
Reported by
AWOS
Coordinates
35.850, -98.420

The wind gust was measured at Watonga Airport.

Thunderstorm Wind, Blaine

When
August 19, 1:55 AM CST
Where
Blaine County, Geary
Measured
74 kt (85 mph) estimated gust
Injuries
2 direct, 0 indirect
Property damage
$84,000
Reported by
NWS Storm Survey
Coordinates
35.630, -98.320

Widespread wind damage was reported in and around Geary as strong winds battered the city for several hours. Numerous trees, power poles, and power lines were downed. The Fast Lane Food Mart had its awning ripped off. Numerous signs were blown over. Part of the roof of the nursing home was ripped off. Two persons were injured while evacuating the nursing home. Siding was also removed from a house, and the garage doors were blown inward. Monetary damages were estimated.

Thunderstorm Wind, Blaine

When
August 19, 1:55 AM CST
Where
Blaine County, Watonga
Measured
70 kt (81 mph) estimated gust
Property damage
$500,000
Reported by
Broadcast Media
Coordinates
35.850, -98.420

Widespread wind damage was reported in and near Watonga. Prolonged high winds and numerous severe gusts occurred in and around Watonga from 1 am until around 415 am. 82 mph winds were reported at Watonga airport at 254 am before weather instruments stopped reporting. One open hangar and 2 T-hangars were completely destroyed.|Six planes were damaged, some severely. Windows were blown out of numerous businesses. Numerous trees, power poles, and power lines were blown down. A train car was on its side after being blown off the track. Two light towers at the baseball field collapsed and one was bent. Monetary damages were estimated.

Thunderstorm Wind, Blaine

When
August 19, 1:55 AM CST
Where
Blaine County, Okeene
Measured
70 kt (81 mph) estimated gust
Property damage
$60,000
Reported by
NWS Storm Survey
Coordinates
36.120, -98.320

A large swath of wind damage was observed, which included the cities of Okeene and Greenfield. A roof was ripped off a grocery story in Okeene, with numerous trees, power lines, and power poles downed. Minor structural damage was observed to an open garage in Greenfield, with numerous trees, power lines, and power poles also downed. Monetary damages were estimated.

Thunderstorm Wind, Canadian

When
August 19, 1:55 AM CST
Where
Canadian County, El Reno
Measured
56 kt (64 mph) estimated gust
Property damage
$8,000
Reported by
Broadcast Media
Coordinates
35.530, -97.970

Several power poles were blown down on I-40 near Country Club Road. Monetary damages were estimated.

Thunderstorm Wind, Grady

When
August 19, 2:10 AM CST
Where
Grady County, Minco
Measured
50 kt (58 mph) measured gust
Reported by
Mesonet
Coordinates
35.320, -97.930

Flash Flood, Kiowa

When
August 19, 2:15 AM CST to 3:45 AM CST
Where
Kiowa County, 5 mi E of Mountain View
Cause
Heavy Rain
Property damage
$60,000
Reported by
Emergency Manager
Coordinates
35.100, -98.662

A house and two vehicles were washed away by the high water from Stinking Creek. The flood water was five feet deep near the location of the house. Monetary damages were estimated.

Flash Flood, Kiowa

When
August 19, 2:20 AM CST to 3:45 AM CST
Where
Kiowa County, 4 mi ESE of Mountain View
Cause
Heavy Rain
Injuries
1 direct, 0 indirect
Reported by
Amateur Radio
Coordinates
35.078, -98.685

A driver had to be rescued due to very high water approximately 1 mile south of HWY 9 on county road 2420. A 0.5 mile section of hwy 9 was also closed near this location.

Thunderstorm Wind, Canadian

When
August 19, 2:30 AM CST
Where
Canadian County, Piedmont
Measured
61 kt (70 mph) estimated gust
Property damage
$4,000
Reported by
Newspaper
Coordinates
35.650, -97.750

Several tree limbs were downed. Monetary damages were estimated.

Thunderstorm Wind, McClain

When
August 19, 2:30 AM CST
Where
McClain County, Purcell
Measured
56 kt (64 mph) estimated gust
Property damage
$4,000
Reported by
NWS Employee
Coordinates
35.020, -97.370

A Bradford pear tree was downed at Adams and 7th Street. Numerous tree limbs were downed by the high winds. Monetary damages were estimated.

Flash Flood, Grady

When
August 19, 2:30 AM CST to 6:30 AM CST
Where
Grady County, 1 mi W of Chickasha
Cause
Heavy Rain
Property damage
$1.0 million
Reported by
Public
Coordinates
35.050, -97.968

The Chickasha PD received major damage due to flooding, including the phone system, the communication system, data system, and the heating and air conditioning systems. Several businesses sustained damage. The River Bend Golf course received significant damage, including several greens destroyed and part of a golf cart path ripped up. It was reported that new flooring would be required at the Chickasha YMCA due to flooding in almost every room, as well as significant damage to the roof. The Grady County Courthouse received some minor flood damage. Performance Plus also received significant damage. HWY 37 was closed due to several feet of water covering the roadway one mile west of Tuttle. Also in Tuttle, the bridge used by the Stillwater Central Railroad received some damage and became impassable. In Minco, the Buggy Creek Bridge had to be closed due to water running over the top of it. Monetary damages were estimated.

Flash Flood, Canadian

When
August 19, 2:45 AM CST to 6:30 AM CST
Where
Canadian County, El Reno
Cause
Heavy Rain
Property damage
$100,000
Reported by
Broadcast Media
Coordinates
35.530, -97.970

HWY 81 was closed near I-40 due to high water, with a car and semi both stranded due to high water. Other roads that were closed included SW 27th between Miles and South Lawn Drive, and Skyview Drive south of Curtis Street. Numerous homes sustained at least minor damage, and the Russell-Murray Hospice sustained severe damage. Monetary damages were estimated.

Thunderstorm Wind, Oklahoma

When
August 19, 2:50 AM CST
Where
Oklahoma County, Bethany
Measured
52 kt (60 mph) estimated gust
Property damage
$500
Reported by
NWS Employee
Coordinates
35.520, -97.630

A 5-inch diameter tree limb was downed by the high winds at Council Road and 37th Street. Monetary damages were estimated.

Lightning, Caddo

When
August 19, 3:00 AM CST
Where
Caddo County, Apache
Property damage
$80,000
Reported by
Newspaper
Coordinates
34.880, -98.370

A home was struck by lightning and burned to the ground. Monetary damages were estimated.

Flash Flood, McClain

When
August 19, 3:00 AM CST to 8:30 AM CST
Where
McClain County, Purcell
Cause
Heavy Rain
Property damage
$5,000
Reported by
Newspaper
Coordinates
35.020, -97.370

A barn was flooded north of State HWY 39 and Sooner Road. Juneau Street was also flooded in Purcell. Monetary damages were estimated.

Thunderstorm Wind, Kingfisher

When
August 19, 3:25 AM CST
Where
Kingfisher County, 2 mi NE of Kingfisher
Measured
52 kt (60 mph) measured gust
Reported by
Mesonet
Coordinates
35.870, -97.905

Flash Flood, Canadian

When
August 19, 3:30 AM CST to 6:30 AM CST
Where
Canadian County, Okarche
Cause
Heavy Rain
Property damage
$100,000
Reported by
Newspaper
Coordinates
35.720, -97.980

Numerous county roads and bridges were closed county wide as torrential rain and sustained severe winds battered the county. In Calumet, portions of the town's water lines were washed out. In Mustang, HWY 152 was closed west of town. Numerous persons had to be rescued from their vehicles, but no injuries were reported. HWY 4 was closed in Mustang due to the high water. The wastewater treatment plant received some minor damage. In Okarche, the Prong bridge east of town was closed due to water running over top of it. The roadway was also closed near the Meyer Dairy Farm. In Piedmont, a car was washed off of Banner Road. The driver had to be rescued but was unharmed. The car was a total loss. The intersection of Apache and 206th street between Piedmont and Cemetery road was closed due to high water. Monetary damages were estimated.

Flash Flood, Canadian

When
August 19, 3:36 AM CST to 6:30 AM CST
Where
Canadian County, Yukon
Cause
Heavy Rain
Property damage
$800,000
Reported by
Emergency Manager
Coordinates
35.500, -97.750

Highways 4 and 92 were closed due to high water. At 6:38 AM CDT, a motorist had to be rescued at Mustang Road and Wagner due the high water. Several other roads in town had to be closed as well due to the flooding. A bridge on Oak Street was severely damaged, requiring significant renovation. Also, extensive farm land was flooded on the north side of town. Two homes at Kingsway Court had 12-18 inches of water in them. Monetary damages were estimated.

Thunderstorm Wind, Cleveland

When
August 19, 3:50 AM CST
Where
Cleveland County, Norman
Measured
70 kt (81 mph) estimated gust
Property damage
$5,000
Reported by
NWS Employee
Coordinates
35.220, -97.450

Large trees were snapped in Norman by strong winds, including near Classen Boulevard and Boyd Street, and along Jenkins Avenue on the University of Oklahoma campus.|

Flash Flood, Caddo

When
August 19, 3:59 AM CST to 6:30 AM CST
Where
Caddo County, 2 mi SW of Eakly
Cause
Heavy Rain
Reported by
Trained Spotter
Coordinates
35.280, -98.575

HWY 152 was impassable due to high water 1/2 mile east of HWY 58.

Flash Flood, Cleveland

When
August 19, 4:00 AM CST to 8:30 AM CST
Where
Cleveland County, Norman
Cause
Heavy Rain
Property damage
$20,000
Reported by
NWS Employee
Coordinates
35.220, -97.450

Numerous streets were closed due to high water. One road collapsed due to the persistent rainfall this year. One bridge sustained minor damage. The bridge to Glen Floyd's Barn was was washed out. Monetary damages were estimated.

Flash Flood, Custer

When
August 19, 4:00 AM CST to 4:30 AM CST
Where
Custer County, Weatherford
Cause
Heavy Rain
Property damage
$50,000
Reported by
Emergency Manager
Coordinates
35.530, -98.720

Numerous city roads were closed due to the high water. Several other county roads and bridges also were closed. A few of the bridges received minor damage. The Stafford Air and Space Center received minor damage with as much as 100 gallons of water in several of the rooms. A road was closed three miles southeast of Thomas due to high water. Monetary damages were estimated.

Flash Flood, Kingfisher

When
August 19, 4:34 AM CST to 8:00 AM CST
Where
Kingfisher County, Kingfisher
Cause
Heavy Rain
Deaths
1 direct, 0 indirect
Property damage
$500,000
Reported by
Emergency Manager
Coordinates
35.850, -97.930

Historic flooding impacted the area in and around the city of Kingfisher. Four feet of water was flowing over HWY 33 in Kingfisher. Four to five feet of water was flowing over HWY 81 between Kingfisher and Dover. Several cars were stalled due to water over HWY 81 north of Okarche. An elderly couple had to be rescued by an OHP helicopter after their car was washed off US HWY 81. Both sustained minor injuries. A 52-year old man died as he tried to flee his vehicle after it had been washed off of HWY 33 14 miles west of Kingfisher. Several homes and businesses sustained major flood damage, with others faring slightly better. The First Baptist Church had 20,000 gallons of water in the basement, which included the kitchen. Most appliances sustained damage and most were a total loss. Monetary damages were estimated.

Flash Flood, Oklahoma

When
August 19, 4:35 AM CST to 8:30 AM CST
Where
Oklahoma County, Oklahoma City
Cause
Heavy Rain
Property damage
$15,000
Reported by
Broadcast Media
Coordinates
35.480, -97.530

Several feet of water was reported over the roadway at NW 36th and Broadway. Four cars were stranded as a result. Numerous other city streets were closed due to high water as well.

Flash Flood, Cleveland

When
August 19, 5:30 AM CST to 8:30 AM CST
Where
Cleveland County, Norman
Cause
Heavy Rain
Property damage
$15,000
Reported by
Emergency Manager
Coordinates
35.220, -97.450

A couple of homes were flooded on Lahoma street. Monetary damages were estimated.

Flash Flood, Garvin

When
August 19, 5:30 AM CST to 9:30 AM CST
Where
Garvin County, Lindsay
Cause
Heavy Rain
Property damage
$20,000
Reported by
Newspaper
Coordinates
34.830, -97.600

Four businesses had flood damage. Numerous streets in town also had to be closed due to high water. Several streets in Maysville also had to be closed due to high water. Monetary damages were estimated.

Heavy Rain, Blaine

When
August 19, 6:00 AM CST
Where
Blaine County, 9.8 mi WNW of Geary
Reported by
Trained Spotter
Coordinates
35.684, -98.481

A total of 11.03 inches of rainfall was recorded between 7 AM on the 18th and 7 AM on the 19th. The report was courtesy of COCORAHS.

Heavy Rain, Caddo

When
August 19, 6:00 AM CST
Where
Caddo County, 4 mi NNW of Ft Cobb
Reported by
Mesonet
Coordinates
35.153, -98.457

A total of 9.30 inches of rainfall was recorded between 7 AM on the 18th and 7 AM on the 19th.

Heavy Rain, Blaine

When
August 19, 6:00 AM CST
Where
Blaine County, Watonga
Reported by
COOP Observer
Coordinates
35.850, -98.420

A total of 9.11 inches of rainfall was recorded between 7 AM on the 18th and 7 AM on the 19th.

Heavy Rain, Kiowa

When
August 19, 6:00 AM CST
Where
Kiowa County, Sedan
Reported by
COOP Observer
Coordinates
34.970, -98.770

A total of 8.84 inches of rainfall was recorded between 7 AM on the 18th and 7 AM on the 19th.

Heavy Rain, Cleveland

When
August 19, 6:00 AM CST
Where
Cleveland County, 7.9 mi ESE of Norman to (Oun)norman Westheimer Arpt
Reported by
Trained Spotter
Coordinates
35.176, -97.321

A total of 8.68 inches of rainfall was recorded over a 24-hour period ending on the 19th. The report was courtesy of COCORAHS.

Heavy Rain, Cotton

When
August 19, 6:00 AM CST
Where
Cotton County, Walters
Reported by
COOP Observer
Coordinates
34.350, -98.300

A total of 8.50 inches of rainfall was recorded over a 24-hour period ending on the 19th.

Heavy Rain, Canadian

When
August 19, 6:00 AM CST
Where
Canadian County, 5 mi WNW of El Reno
Reported by
Mesonet
Coordinates
35.558, -98.052

A total of 8.45 inches of rainfall was recorded over a 24-hour period ending on the 19th.

Heavy Rain, Caddo

When
August 19, 6:00 AM CST
Where
Caddo County, Lookeba
Reported by
COOP Observer
Coordinates
35.370, -98.350

A total of 8.15 inches of rainfall was recorded over a 24-hour period ending on the 19th.

Heavy Rain, Cleveland

When
August 19, 6:00 AM CST
Where
Cleveland County, (Oun)norman Westheimer Arpt
Reported by
COOP Observer
Coordinates
35.250, -97.470

A total of 7.67 inches of rainfall was recorded over a 24-hour period ending on the 19th.

Heavy Rain, Oklahoma

When
August 19, 6:00 AM CST
Where
Oklahoma County, (Okc)will Rogers Apt
Reported by
ASOS
Coordinates
35.400, -97.600

A total of 5.38 inches of rainfall was recorded over a 24-hour period ending on the 19th.

Flash Flood, Lincoln

When
August 19, 8:00 AM CST to 11:00 AM CST
Where
Lincoln County, Stroud
Cause
Heavy Rain
Property damage
$5,000
Reported by
Newspaper
Coordinates
35.750, -96.670

Very heavy rainfall flooded portions of the Highland Dairy Farm, including the Dairy storage section of the property. Monetary damages were estimated.

Flash Flood, Pottawatomie

When
August 19, 9:00 AM CST to 12:45 PM CST
Where
Pottawatomie County, Tecumseh
Cause
Heavy Rain
Property damage
$250,000
Reported by
Emergency Manager
Coordinates
35.250, -96.930

A couple of feet of water covered the wastewater treatment plant. Several outlets, fans, and pumps were damaged as a result. The Tecumseh High School had one inch of water in several classrooms. Five feet of water accumulated at Broadway and Tecumseh. Water was over the vehicle roofs near the US 177 interchange. Five residences received minor flood damage. A couple of residents had to be rescued from their home, as well as 5 people from their vehicles due to the high water. Numerous streets were flooded in Shawnee as well due to the high water. The southern portions of Pottawatomie county had extensive fence damage due to baled hay and other debris being washed through them. Numerous roads were closed in Bethel Acres, Pink, Brooksville, Macomb, and Wannette. In Earlsboro, one woman and two children had to be rescued from their vehicle at Kings Road. No injuries were reported at any location. Monetary damages were estimated.

Flash Flood, Seminole

When
August 19, 12:30 PM CST
Where
Seminole County, Seminole
Cause
Heavy Rain
Deaths
1 direct, 0 indirect
Property damage
$50,000
Reported by
Emergency Manager
Coordinates
35.230, -96.680

Three to four feet of water accumulated at the Seminole Ford/Mercury car dealership. Numerous city and county roads were closed due to the high water. A 67-year old woman drowned as her car was washed off the roadway into Magnolia Creek.

The people who died

As the offices recorded each death: direct deaths were caused by the weather itself, indirect ones by something it set in motion.

EventDateAgeSexWhereKind
Flash Flood, Caddo2007-08-1977FemaleIn WaterDirect
Flash Flood, Caddo2007-08-1934FemaleIn WaterDirect
Flash Flood, Caddo2007-08-1917FemaleIn WaterDirect
Flash Flood, Caddo2007-08-19FemaleIn WaterDirect
Flash Flood, Kingfisher2007-08-1952MaleIn WaterDirect
Flash Flood, Seminole2007-08-1967FemaleIn WaterDirect

What these are

Tornado
A violently rotating column of air in contact with the ground and extending from a thunderstorm, filed with its path, width and Fujita or Enhanced Fujita rating from the damage survey.
Flash Flood
Flooding that begins within six hours of the rain that causes it, or of a dam or levee failure or ice jam release, often with deadly speed.
Thunderstorm Wind
Winds from a thunderstorm of 50 knots (58 mph) or more, or lower winds that caused damage or casualties. Measured gusts are marked MG, estimated EG.
Lightning
A lightning strike that killed, injured or caused damage.
Heavy Rain
Rainfall totals unusual for the place and season that did not produce a flood.

After NWS Directive 10-1605, the rules offices file Storm Data by.

The same day elsewhere

More

Every storm in Oklahoma in 2007Every state in 2007This day in weather historyThe tornado archive for Oklahoma, 2007Warnings in Oklahoma, August 2007

Sources

NOAA National Centers for Environmental Information, Storm Events Database, compiled from the National Weather Service’s monthly Storm Data. Complete through 2026-06; NCEI adds each month about 75 days after it ends and revises past years a few times a year. Rebuilt 2026-09-24. Each event’s entry at NCEI: 56376, 40938, 56377, 58212, 58213, 58214, 58824, 56816, 58878, 58215, 56493, 56494, 58218, 56495, 58315, 56496, 56497, 56498, 56499, 56500, 56501, 56502, 56814, 56503, 56828, 56379, 58834, 56380, 58877, 56381, 56382, 56504, 56848, 56505, 56837, 56838, 56842, 56846, 58881, 58221, and more.