Alert archive / Oklahoma / River Flood Warnings in 2009

River Flood Warning 16, NWS Norman, OK

April 30, 2009Cotton County, Jefferson County, Tillman County, Oklahoma; Clay County, Wichita County, Texas

NWS Norman, OK issued this river flood warning at Apr 30, 2009, 2:11 PM CDT for Cotton County, Jefferson County, Tillman County, Oklahoma; Clay County, Wichita County, Texas. It took effect at Apr 30, 2009, 5:54 PM CDT. It was in force for 40 hr.

The area

The counties it named.

The facts

Issued: Apr 30, 2009, 2:11 PM CDT (19:11 UTC)
In effect from: Apr 30, 2009, 5:54 PM CDT
Expired: May 2, 2009, 10:19 AM CDT
In force: 40 hr
Issued by: NWS Norman, OK
Flood severity: Minor

Counties Cotton County, OK, Jefferson County, OK, Tillman County, OK, Clay County, TX, Wichita County, TX

The radar

The Altus AFB radar (KFDR), 59 km from the middle of the area, began a volume at 19:16 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 river

Written for the forecast point Red River near Burkburnett (BKBT2). The gauge peaked at 10.05 ft at May 1, 2009, 4:00 PM CDT.

Action stage: 7 ft
Minor stage: 9 ft
Moderate stage: 12 ft
Major stage: 14 ft

This gauge today: stage, forecast and historic crests

Stage from the USGS instantaneous record for site 07308500, one reading an hour, from a day before the product to a day after it ended. Flood stages are today's.

What forecasters said that day

The local office's own words before this river 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 river flood warning went out at Apr 30, 1:03 PM CDT, 1 hour 8 minutes earlier.

Area forecast discussion, Apr 30, 1:03 PM CDT, 1 hour 8 minutes before

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Hazardous weather outlook, Apr 30, 11:55 AM CDT, 2 hours 16 minutes before

HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE NORMAN OK
1155 AM CDT THU APR 30 2009

OKZ004>048-050>052-TXZ083>090-011000-
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 THU APR 30 2009

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

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

THUNDERSTORM OUTLOOK...
THERE IS A SLIGHT RISK OF SEVERE THUNDERSTORMS FROM THIS AFTERNOON
INTO TONIGHT ACROSS ALL OF OKLAHOMA AND WESTERN NORTH TEXAS.

TIMING...
THE MOST LIKELY TIME FOR SEVERE THUNDERSTORMS WILL BE FROM 4 PM
THROUGH THE NIGHT.

IMPACTS...
SOME DAMAGE TO VEGETATION...AUTOMOBILES...AND HOMES...FROM HAIL TO
THE SIZE OF TENNIS BALLS.

LOCALLY SIGNIFICANT WIND DAMAGE FROM 75 MPH WINDS.

A LOW CHANCE OF TORNADOES.

RECOMMENDED ACTIONS...
STORM SPOTTER GROUPS AND EMERGENCY MANAGEMENT PERSONNEL ACROSS THE
RISK AREA SHOULD PLAN FOR SEVERE WEATHER OPERATIONS FROM LATE THIS
AFTERNOON UNTIL LATE TONIGHT.

DISCUSSION...
RICH GULF MOISTURE WAS IN PLACE. DEWPOINTS WILL RISE INTO THE MIDDLE
AND LOCALLY UPPER 60S...WHILE A COLD FRONT APPROACHES FROM THE
NORTHWEST. FROM MIDDAY INTO THE AFTERNOON...A SMALL COMPLEX OF
THUNDERSTORMS WILL MOVE JUST EAST OF STILLWATER...DOWN TO INTERSTATE
40. THIS WILL PRODUCE AN OUTFLOW BOUNDARY ORIENTED NORTHWEST TO
SOUTHEAST ACROSS CENTRAL AND NORTH CENTRAL OKLAHOMA. ELSEWHERE...THE
ENTIRE REGION WILL RECEIVE PLENTY OF HEATING...RESULTING IN STRONG
INSTABILITY...WITH CAPE VALUES GREATER THAN 2500...AND POSSIBLY
APPROACHING 3500 LATE THIS AFTERNOON. CAP STRENGTH WILL BE GREATEST
TO THE WEST...AND WEAKEST NEAR THE OUTFLOW BOUNDARY. THE FRONT WILL
MOVE INTO NORTHWEST OKLAHOMA...AND A WIND SHIFT...OR TROUGH AHEAD OF
THE FRONT IS EXPECTED TO BECOME THE FOCUS FOR THUNDERSTORM
DEVELOPMENT LATE THIS AFTERNOON. THE TROUGH WILL EXTEND FROM NEAR
PONCA CITY TO WATONGA AND MANGUM. THE MOST NUMEROUS STORMS ARE
EXPECTED WHERE THE TROUGH OVERTAKES THE OUTFLOW BOUNDARY IN NORTH
CENTRAL AND CENTRAL OKLAHOMA. INITIALLY...MODERATE WIND SHEAR AND
STRONG INSTABILITY MAY RESULT IN SUPERCELLS...WITH A RISK OF VERY
LARGE HAIL...AND AT LEAST A LOW CHANCE OF TORNADOES. THE STORMS MAY
QUICKLY GROW INTO A COMPLEX...HOWEVER...AND BEGIN TO MOVE SOUTH AND
SOUTHEAST...WITH AN INCREASING THREAT OF DAMAGING WINDS...IN
ADDITION TO LARGE HAIL.

FARTHER TOWARD WESTERN OKLAHOMA AND WESTERN NORTH TEXAS...A STRONG
CAP WILL LIMIT THE NUMBER OF STORMS...BUT ANY STORMS THAT DO FORM
MAY BRIEFLY EXHIBIT SUPERCELL STRUCTURE. VERY LARGE HAIL AND
DAMAGING WINDS WILL BE POSSIBLE.

PROBABILITY TABLE...
VALID THROUGH 500 AM CDT FRIDAY MAY 1.
PROBABILITY OF THUNDERSTORMS OCCURRING IN THE
              NWS NORMAN COUNTY WARNING AREA...70 PERCENT.
PROBABILITY OF SEVERE STORMS IF STORMS OCCUR...90 PERCENT.

OTHER HAZARDOUS WEATHER...
THROUGH EVENING...HEAVY RAIN AND LOCAL FLOODING SHOULD BE FOCUSED
WITH INDIVIDUAL STORMS IN THE WEST...OR WITH A DEVELOPING COMPLEX OF
STORMS IN NORTHERN AND CENTRAL OKLAHOMA. EVENTUALLY... HOWEVER..
THERE IS A LOW TO MODERATE CHANCE THAT HEAVY RAIN COULD MOVE BACK
INTO SOUTHERN OKLAHOMA AND CLAY COUNTY TEXAS BY LATE EVENING AND
OVERNIGHT. AFTER RECEIVING 8 TO 13 INCHES OF RAIN YESTERDAY...THOSE
AREAS WILL FLOOD QUICKLY...IF ADDITIONAL RAIN ARRIVES.

.DAYS TWO THROUGH SEVEN...FRIDAY THROUGH WEDNESDAY...

THUNDERSTORM OUTLOOK...
SEVERE STORMS ARE POSSIBLE ALONG A SLOW MOVING COLD FRONT ON FRIDAY.
IF SEVERE STORMS OCCUR THIS WEEKEND...THEY WILL BE MOST LIKELY IN
SOUTHEASTERN OKLAHOMA. THERE IS A CHANCE OF THUNDERSTORMS ON TUESDAY
AND WEDNESDAY AS A STRONG UPPER LEVEL STORM SYSTEM APPROACHES THE
AREA.

OTHER HAZARDOUS WEATHER...
HEAVY RAINFALL IS EXPECTED FROM FRIDAY NIGHT THROUGH SUNDAY ACROSS
MUCH OF OKLAHOMA AND WESTERN NORTH TEXAS...WHICH COULD LEAD TO BOTH
LOCALIZED AND MAINSTEM RIVER FLOODING.

UNSCHEDULED UPDATES TO THE HAZARDOUS WEATHER OUTLOOK WILL BE ISSUED
TODAY.

TAYLOR/BURKE/II

In the hours before

Special weather statement, Apr 30, 8:30 AM CDT, 5 hours 41 minutes before

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Local storm report, Apr 30, 8:56 AM CDT, 5 hours 15 minutes before

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Special weather statement, Apr 30, 11:22 AM CDT, 2 hours 49 minutes before

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Special weather statement, Apr 30, 11:29 AM CDT, 2 hours 42 minutes before

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The office that day

Everything else NWS Norman, OK issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Apr 29, 8:37 PM CDT	River Flood Warning	OUN	Love	4 days
Apr 29, 8:50 PM CDT	Severe Thunderstorm Warning	OUN	Jefferson, Stephens	55 min
Apr 29, 9:05 PM CDT	Severe Thunderstorm Warning	OUN	Cotton, Tillman	40 min
Apr 29, 9:11 PM CDT	Severe Thunderstorm Warning	OUN	Jackson, Tillman	49 min
Apr 29, 9:21 PM CDT	Areal Flood Warning	OUN	Carter, Cotton, Jefferson, Love, Marshall, Stephens	6 hr
Apr 29, 9:29 PM CDT	Severe Thunderstorm Warning	OUN	Cotton	61 min
Apr 29, 10:25 PM CDT	Severe Thunderstorm Warning	OUN	Tillman	65 min
Apr 29, 10:37 PM CDT	Severe Thunderstorm Warning	OUN	Comanche, Cotton, Tillman	53 min
Apr 29, 11:27 PM CDT	Severe Thunderstorm Warning	OUN	Comanche, Cotton, Jefferson, Stephens	63 min
Apr 29, 11:48 PM CDT	Severe Thunderstorm Warning	OUN	Carter, Love, Murray	57 min
Apr 30, 1:32 AM CDT	Areal Flood Advisory	OUN	Carter, Garvin, Johnston, Murray, Pontotoc, Stephens	3 hr
Apr 30, 2:13 AM CDT	Areal Flood Warning	OUN	Atoka, Bryan, Carter, Jefferson, Love, Marshall	6 hr
Apr 30, 2:35 AM CDT	River Flood Warning	OUN	Comanche, Cotton	42 hr
Apr 30, 8:57 AM CDT	Flash Flood Warning	OUN	Kay	4 hr
Apr 30, 12:52 PM CDT	River Flood Warning	OUN	Harper, Woods, Woodward	25 hr
Apr 30, 3:14 PM CDT	Flash Flood Watch	OUN	Alfalfa, Atoka, Blaine, Bryan, Caddo, Canadian and 38 more	61 hr
Apr 29, 8:04 PM CDT	Severe Thunderstorm Warning	OUN	Foard, Hardeman	56 min
Apr 29, 8:55 PM CDT	Severe Thunderstorm Warning	OUN	Baylor, Foard, Knox, Wilbarger	50 min
Apr 29, 9:40 PM CDT	Severe Thunderstorm Warning	OUN	Baylor, Foard, Hardeman, Knox, Wichita, Wilbarger	65 min
Apr 29, 9:45 PM CDT	Severe Thunderstorm Warning	OUN	Hardeman, Wilbarger	60 min
Apr 29, 10:44 PM CDT	Severe Thunderstorm Warning	OUN	Baylor, Knox	46 min
Apr 29, 11:28 PM CDT	Severe Thunderstorm Warning	OUN	Baylor	62 min
Apr 30, 12:10 AM CDT	Areal Flood Advisory	OUN	Archer, Clay	3 hr
Apr 30, 12:38 AM CDT	Areal Flood Advisory	OUN	Foard, Hardeman, Wilbarger	112 min
Apr 30, 12:54 AM CDT	Severe Thunderstorm Warning	OUN	Foard, Hardeman, Wilbarger	66 min
Apr 30, 1:58 AM CDT	Severe Thunderstorm Warning	OUN	Archer, Wichita, Wilbarger	62 min
Apr 30, 2:49 AM CDT	Severe Thunderstorm Warning	OUN	Archer, Baylor, Wichita, Wilbarger	71 min

Nearby

River Flood Warnings in Oklahoma, 2009 River Flood Warnings in Texas, 2009 Every river flood warning in 2009

Sources

The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; radar from the NEXRAD Level II archive; the gauge from the NWS water service and the USGS.