Alert archive / Oklahoma / Flash Flood Warnings in 2010
Flash Flood Warning 17, NWS Norman, OK
NWS Norman, OK issued this flash flood warning at Jul 5, 2010, 7:46 AM CDT for Caddo County, Canadian County, Grady County, Oklahoma. It was in force for 3 hr. No storm report in the archive falls inside the area while it was in force.
The area
The counties it named.
The facts
- Issued
- Jul 5, 2010, 7:46 AM CDT (12:46 UTC)
- Expired
- Jul 5, 2010, 10:45 AM CDT
- In force
- 3 hr
- Issued by
- NWS Norman, OK
- Area
- Storm-based polygon
- Flood severity
- None
Counties Caddo County, OK, Canadian County, OK, Grady County, OK
The radar
The Norman radar (KTLX), 74 km from the middle of the area, began a volume at 12:49 UTC, the scan nearest the moment this went out.
Open the radar archive at this moment
The archived warnings, watches and discussions in force at that minute are drawn over the scan, this one among them.
The nearest sounding before it
Lamont, OK (KLMN), launched 12:00Z, 0.8 hours before the alert went out and 162 km from the middle of its area. This is the routine balloon launch nearest before it, the air the forecaster had in hand, not a measurement taken for the alert.
- Mixed-layer CAPE
- 1008 J/kg
- Mixed-layer CIN
- -14 J/kg
- Mixed-layer LCL
- 656 m above ground
- 0-6 km bulk shear
- 23 kt
- 0-1 km storm-relative helicity
- 41 m²/s²
- 0-3 km storm-relative helicity
- 45 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.6
What forecasters said that day
The local office's own words before this flash flood warning went out, 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 this flash flood warning went out at Jul 5, 6:38 AM CDT, 1 hour 8 minutes earlier.
Area forecast discussion, Jul 5, 6:38 AM CDT, 1 hour 8 minutes before
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</html>Hazardous weather outlook, Jul 5, 5:00 AM CDT, 2 hours 46 minutes before
HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE NORMAN OK
500 AM CDT MON JUL 5 2010
OKZ004>048-050>052-TXZ083>090-051700-
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-
500 AM CDT MON JUL 5 2010
THIS HAZARDOUS WEATHER OUTLOOK COVERS NORTHERN...WESTERN...
CENTRAL...AND SOUTHERN OKLAHOMA...AND WESTERN NORTH TEXAS.
.DAY ONE...TODAY AND TONIGHT...
THUNDERSTORM OUTLOOK...
ISOLATED SEVERE THUNDERSTORMS ARE POSSIBLE LATE THIS AFTERNOON AND
THIS EVENING OVER NORTHWESTERN OKLAHOMA... NORTHWEST OF A LINE FROM
ALVA TO VICI TO CHEYENNE.
DISCUSSION...
A STRONG UPPER-LEVEL TROUGH OVER COLORADO THIS MORNING WILL MOVE
EAST INTO THE CENTRAL PLAINS LATER TODAY AND THIS EVENING. DRIER AIR
ALOFT... TO THE SOUTH OF THIS TROUGH... WILL MOVE EAST WITH THE
SYSTEM INTO PARTS OF THE CENTRAL AND SOUTHERN PLAINS... AND WILL
DISPLACE THE PERSISTENT PLUME OF DEEP TROPICAL MOISTURE EASTWARD AND
AWAY FROM NORTHWESTERN OKLAHOMA. WITHIN THE AREA OF DRIER AIR
ALOFT... INSTABILITY WILL INCREASE DUE TO STEEPER LAPSE RATES ALOFT.
MEANWHILE A COLD FRONT WILL MOVE SOUTHEAST AND WILL BE LOCATED CLOSE
TO THE NORTHWESTERN CORNER OF OKLAHOMA LATE THIS AFTERNOON. LIFTING
AHEAD OF THE UPPER TROUGH MAY RESULT IN THUNDERSTORMS DEVELOPING
NEAR THE COLD FRONT LATE THIS AFTERNOON OR EARLY THIS EVENING.
GREATER INSTABILITY WILL LIKELY EXIST THAN HAS BEEN PRESENT IN
RECENT DAYS... BUT THE AMOUNT OF SURFACE-BASED INSTABILITY WILL
DEPEND ON WHETHER OR NOT LOW CLOUDS WILL BREAK UP THIS AFTERNOON
OVER NORTHWESTERN OKLAHOMA. IF THE CLOUDS BREAK AND THE LOW LEVELS
BECOME MORE UNSTABLE... THUNDERSTORMS WILL BECOME SURFACE BASED.
INCREASING SOUTHWEST WINDS ALOFT AHEAD OF THE UPPER TROUGH WILL LEAD
TO STRONGER VERTICAL WIND SHEAR... WHICH WOULD SUPPORT A FEW
ORGANIZED STRONG THUNDERSTORMS. LARGE HAIL AND DAMAGING THUNDERSTORM
WINDS WOULD BE THE MAIN CONCERN.
ELSEWHERE... INSTABILITY WILL REMAIN WEAK BUT DEEP ATMOSPHERIC
MOISTURE WILL SUPPORT WIDESPREAD SHOWERS AND AREAS OF RAIN... WITH
ISOLATED TO SCATTERED EMBEDDED THUNDERSTORMS THROUGH TONIGHT.
PROBABILITY TABLE...
VALID THROUGH 700 AM CDT TUESDAY JUL 6.
PROBABILITY OF THUNDERSTORMS OCCURRING IN THE
NWS NORMAN COUNTY WARNING AREA...80 PERCENT.
PROBABILITY OF SEVERE STORMS IF STORMS OCCUR...20 PERCENT.
OTHER HAZARDOUS WEATHER...
A FLASH FLOOD WATCH REMAINS IN EFFECT FOR PARTS OF WESTERN OKLAHOMA
AND WESTERN NORTH TEXAS. PLEASE REFER TO THE FLASH FLOOD WATCH FOR
DETAILS.
.DAYS TWO THROUGH SEVEN...TUESDAY THROUGH SUNDAY...
THUNDERSTORM OUTLOOK...
THE UPPER TROUGH OVER COLORADO THIS MORNING WILL MOVE EAST OF THE
AREA BY LATE TUESDAY... DISPLACING THE DEEP TROPICAL MOISTURE
FARTHER EAST AND AT LEAST REDUCING THE CHANCES OF THUNDERSTORMS AND
ADDITIONAL HEAVY RAIN. HOWEVER THE LOW LEVELS WILL REMAIN
SUFFICIENTLY MOIST AND UNSTABLE TO SUPPORT THE CHANCE OF AT LEAST
WIDELY SCATTERED THUNDERSTORMS INTO MIDWEEK. THUNDERSTORM CHANCES
MAY INCREASE AGAIN BY AROUND THURSDAY AS A WEAK COLD FRONT MOVES
INTO THE SOUTHERN PLAINS.
OTHER HAZARDOUS WEATHER...
NONE.
THE NEXT SCHEDULED HAZARDOUS WEATHER OUTLOOK WILL BE ISSUED BY NOON
TODAY.In the hours before
Local storm report, Jul 5, 6:37 AM CDT, 1 hour 9 minutes before
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</html>The office that day
Everything else NWS Norman, OK issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 4, 8:02 PM CDT | River Flood Warning | OUN | Pottawatomie, Seminole | 14 hr |
| Jul 5, 3:43 AM CDT | Areal Flood Advisory | OUN | Caddo, Comanche, Greer, Harmon, Jackson, Kiowa and 1 more | 4 hr |
| Jul 5, 4:36 AM CDT | Flash Flood Warning | OUN | Greer, Jackson, Kiowa | 5 hr |
| Jul 5, 5:50 AM CDT | Areal Flood Advisory | OUN | Blaine, Caddo, Canadian, Custer, Washita | 4 hr |
| Jul 5, 6:09 AM CDT | Flash Flood Warning | OUN | Caddo, Kiowa, Washita | 4 hr |
| Jul 5, 7:28 AM CDT | Areal Flood Advisory | OUN | Blaine, Canadian, Cleveland, Garfield, Grady, Kingfisher and 4 more | 4 hr |
| Jul 5, 9:41 AM CDT | Areal Flood Advisory | OUN | Greer, Kiowa | 109 min |
| Jul 5, 9:54 AM CDT | Areal Flood Advisory | OUN | Jackson | 3 hr |
| Jul 5, 9:55 AM CDT | River Flood Warning | OUN | Jackson, Kiowa, Tillman | 41 hr |
| Jul 5, 10:07 AM CDT | Areal Flood Warning | OUN | Caddo, Kiowa, Washita | 3 hr |
| Jul 5, 3:15 PM CDT | Severe Thunderstorm Warning | OUN | Woods | 37 min |
| Jul 5, 3:49 PM CDT | Severe Thunderstorm Warning | OUN | Harper, Woodward | 56 min |
| Jul 5, 5:40 PM CDT | Areal Flood Advisory | OUN | Alfalfa, Woods | 3 hr |
| Jul 5, 6:45 PM CDT | Severe Thunderstorm Warning | OUN | Grant, Kay | 60 min |
| Jul 4, 9:02 PM CDT | Areal Flood Advisory | OUN | Archer, Baylor, Wichita, Wilbarger | 3 hr |
| Jul 5, 2:14 AM CDT | Areal Flood Advisory | OUN | Archer, Baylor, Wichita, Wilbarger | 4 hr |
| Jul 5, 9:58 AM CDT | River Flood Warning | OUN | Wichita, Wilbarger | 22 hr |
Nearby
Flash Flood Warnings in Oklahoma, 2010Every flash flood warning in 2010
Sources
The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.