Flash Flood Warning 1, NWS Norman, OK

Issued

Apr 22, 2011, 8:14 PM CDT (01:14 UTC)

Expired

Apr 22, 2011, 11:15 PM CDT

In force

3 hr

Issued by

NWS Norman, OK

Area

Storm-based polygon

Flood severity

None

Counties Garvin County, OK, McClain County, OK, Pottawatomie County, OK

The Norman radar (KTLX), 47 km from the middle of the area, began a volume at 01:13 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.

491 
WGUS54 KOUN 230114
FFWOUN
OKC049-087-125-230415-
/O.NEW.KOUN.FF.W.0001.110423T0114Z-110423T0415Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE NORMAN OK
814 PM CDT FRI APR 22 2011

THE NATIONAL WEATHER SERVICE IN NORMAN HAS ISSUED A

* FLASH FLOOD WARNING FOR...
  SOUTHEASTERN MCCLAIN COUNTY IN CENTRAL OKLAHOMA...
  SOUTHWESTERN POTTAWATOMIE COUNTY IN CENTRAL OKLAHOMA...
  NORTHERN GARVIN COUNTY IN SOUTHERN OKLAHOMA...

* UNTIL 1115 PM CDT

* AT 812 PM CDT...NATIONAL WEATHER SERVICE RADAR INDICATED VERY HEAVY
  RAIN FROM NUMEROUS THUNDERSTORMS NEAR MAYSVILLE TOWARD WAYNE... 
ROSEDALE...AND WANETTE. RAINFALL ESTIMATES SO FAR RANGE FROM 3 TO 4 
INCHES...WITH AN ADDITION 2 INCHES POSSIBLE OVER THE WARNING AREA. 
WITH THE VERY DRY AND HARD SOILS...MUCH OF THIS RAIN WILL LIKELY 
TURN TO RUNOFF AND CAUSE FLASH FLOODING.

* LOCATIONS IN THE WARNING INCLUDE BYARS...MAYSVILLE...ROSEDALE...
  WANETTE AND WAYNE.

THIS INCLUDES INTERSTATE 35 BETWEEN MILE MARKERS 80 AND 85.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

EXCESSIVE RUNOFF FROM THIS STORM WILL CAUSE FLASH FLOODING OF SMALL
CREEKS AND STREAMS...HIGHWAYS AND UNDERPASSES. ADDITIONALLY...COUNTRY
ROADS AND FARM LANDS ALONG THE BANKS OF CREEKS AND STREAMS AND OTHER
LOW LYING AREAS ARE SUBJECT TO FLASH FLOODING.

DO NOT DRIVE YOUR VEHICLE INTO AREAS WHERE WATER COVERS THE ROADWAY.
AS LITTLE AS 6 INCHES OF WATER MAY CAUSE YOU TO LOSE CONTROL OF YOUR
VEHICLE. TWO FEET OF RUSHING WATER CAN CARRY AWAY MOST VEHICLES
INCLUDING SPORT UTILITY VEHICLES AND PICKUP TRUCKS. MOVE TO HIGHER
GROUND.

&&

LAT...LON 3489 9693 3479 9746 3490 9742 3495 9721
      3493 9719 3494 9715 3497 9714 3502 9693

$$

028 
WGUS74 KOUN 230201
FFSOUN

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE NORMAN OK
901 PM CDT FRI APR 22 2011

OKC049-087-125-230415-
/O.CON.KOUN.FF.W.0001.000000T0000Z-110423T0415Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
POTTAWATOMIE OK-MCCLAIN OK-GARVIN OK-
901 PM CDT FRI APR 22 2011

...A FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 1115 PM CDT FOR
NORTHERN GARVIN...SOUTHEASTERN MCCLAIN AND SOUTHWESTERN POTTAWATOMIE
COUNTIES...

AT 900 PM CDT...NATIONAL WEATHER SERVICE RADAR INDICATED THAT THE 
VERY HEAVY AND PERSISTENT RAIN HAD MOVED OUT OF FAR SOUTHERN 
PORTIONS OF MCCLAIN AND SOUTHWEST POTTAWATOMIE COUNTIES. HOWEVER... 
RUNOFF FROM THE STORMS MAY CONTINUE THROUGH AT LEAST 11 PM... 
LEADING TO FLASH FLOODING OF MAINLY LOW-WATER CROSSINGS.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

DO NOT DRIVE YOUR VEHICLE INTO AREAS WHERE WATER COVERS THE ROADWAY.
AS LITTLE AS 6 INCHES OF WATER MAY CAUSE YOU TO LOSE CONTROL OF YOUR
VEHICLE. TWO FEET OF RUSHING WATER CAN CARRY AWAY MOST VEHICLES
INCLUDING SPORT UTILITY VEHICLES AND PICKUP TRUCKS. MOVE TO HIGHER
GROUND.

&&

LAT...LON 3489 9693 3479 9746 3490 9742 3495 9721
      3493 9719 3494 9715 3497 9714 3502 9693

$$

Flash Flood Warnings in Oklahoma, 2011Every flash flood warning in 2011

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.