Alert archive / Arkansas / Flash Flood Warnings in 2011

Flash Flood Warning 57, NWS Tulsa, OK

May 24, 2011Benton County, Washington County, Arkansas

NWS Tulsa, OK issued this flash flood warning at May 24, 2011, 11:14 PM CDT for Benton County, Washington County, Arkansas. 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 outline as issued.

The facts

Issued: May 24, 2011, 11:14 PM CDT (04:14 UTC)
Expired: May 25, 2011, 2:00 AM CDT
In force: 3 hr
Issued by: NWS Tulsa, OK
Area: Storm-based polygon
Flood severity: None

Counties Benton County, AR, Washington County, AR

The radar

The Western Arkansas radar (KSRX), 110 km from the middle of the area, began a volume at 04:16 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 nearest sounding before it

Springfield, MO (KSGF), launched 00:00Z, 4.2 hours before the alert went out and 76 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.

Skew-T log-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

The wind turning with height, colored by layer: ground to 1 km, 1 to 3 km, 3 to 6 km, 6 to 10 km.

Mixed-layer CAPE: 1213 J/kg
Mixed-layer CIN: -94 J/kg
Mixed-layer LCL: 941 m above ground
0-6 km bulk shear: 48 kt
0-1 km storm-relative helicity: 106 m²/s²
0-3 km storm-relative helicity: 200 m²/s²
Significant tornado parameter: 0.7
Supercell composite: 6.2

Open this sounding in Storm Lab

The text

As transmitted, in the capitals the NWS used until 2016.

265 
WGUS54 KTSA 250414
FFWTSA
ARC007-143-250700-
/O.NEW.KTSA.FF.W.0057.110525T0414Z-110525T0700Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE TULSA OK
1114 PM CDT TUE MAY 24 2011

THE NATIONAL WEATHER SERVICE IN TULSA HAS ISSUED A

* FLASH FLOOD WARNING FOR...
  BENTON COUNTY IN NORTHWEST ARKANSAS...
  WASHINGTON COUNTY IN NORTHWEST ARKANSAS...

* UNTIL 200 AM CDT

* AT 1113 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED  
THUNDERSTORMS WITH VERY HEAVY RAIN EXTENDING FROM NEAR PEA RIDGE TO 
NEAR CINCINNATI. THIS LINE OF STORMS WILL CONTINUE TO MOVE EASTWARD 
ACROSS NORTHWEST ARKANSAS...PRODUCING HEAVY DOWNPOURS AND RAINFALL 
AMOUNTS AS HIGH AS 1 TO 2 INCHES. AREAL FLOODING REMAINS ACROSS MUCH 
OF THE WARNED AREA...AND ANY ADDITIONAL RAINFALL...ESPECIALLY RAINS 
THAT OCCUR DURING A DOWNPOUR...WILL CAUSE DANGEROUS FLASH FLOODING.

* RUNOFF FROM THIS EXCESSIVE RAINFALL WILL CAUSE FLASH FLOODING TO
  OCCUR. SOME LOCATIONS THAT COULD EXPERIENCE FLOODING INCLUDE...
  BENTONVILLE...FAYETTEVILLE...ROGERS...SILOAM SPRINGS...
  SPRINGDALE...BELLA VISTA...BRENTWOOD...CAVE SPRINGS...CINCINNATI...
  DECATUR...ELKINS...FARMINGTON...GARFIELD...GATEWAY...GENTRY...
  GRAVETTE...GREENLAND...HIGHFILL...HIWASSE...LINCOLN...LOWELL...
  MAYSVILLE...PEA RIDGE...PRAIRIE GROVE...SPRINGTOWN...STRICKLER...
  TONTITOWN...WAR EAGLE AND WEST FORK.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

DO NOT DRIVE YOUR VEHICLE INTO AREAS WHERE WATER COVERS THE ROAD TO
UNKNOWN DEPTHS. IT ONLY TAKES TWO FEET OF RUSHING WATER TO CARRY AWAY
MOST SPORT UTILITY VEHICLES AND PICKUPS. TAKE A DIFFERENT ROUTE TO
REACH YOUR DESTINATION OR WAIT UNTIL THE WATER RECEDES. REMEMBER...
MOST FLOOD RELATED DEATHS OCCUR IN AUTOMOBILES.

&&

LAT...LON 3631 9386 3624 9387 3623 9389 3610 9394
      3582 9396 3583 9451 3651 9462 3651 9387
      3639 9387 3639 9388

$$

The office that day

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

Issued	Product	Office	Counties	Lasted
May 24, 7:59 PM CDT	Flash Flood Warning	TSA	Carroll	12 hr
May 24, 9:42 PM CDT	Severe Thunderstorm Warning	TSA	Benton	48 min
May 24, 9:48 PM CDT	Tornado Warning	TSA	Benton	43 min
May 24, 10:25 PM CDT	Severe Thunderstorm Warning	TSA	Benton, Washington	65 min
May 24, 10:34 PM CDT	Tornado Warning	TSA	Washington	26 min
May 24, 10:53 PM CDT	Severe Thunderstorm Warning	TSA	Crawford, Sebastian	67 min
May 24, 10:54 PM CDT	Tornado Warning	TSA	Benton, Washington	36 min
May 24, 10:56 PM CDT	Tornado Warning	TSA	Sebastian	49 min
May 24, 11:03 PM CDT	Tornado Warning	TSA	Washington	42 min
May 24, 11:15 PM CDT	Flash Flood Warning	TSA	Crawford, Franklin, Sebastian	3 hr
May 24, 11:27 PM CDT	Tornado Warning	TSA	Crawford, Franklin, Sebastian	33 min
May 24, 11:28 PM CDT	Severe Thunderstorm Warning	TSA	Benton, Carroll, Madison, Washington	92 min
May 24, 11:31 PM CDT	Severe Thunderstorm Warning	TSA	Franklin, Sebastian	29 min
May 24, 11:41 PM CDT	Tornado Warning	TSA	Crawford, Sebastian	34 min
May 24, 11:54 PM CDT	Flash Flood Warning	TSA	Carroll, Madison	2 hr
May 24, 11:56 PM CDT	Tornado Warning	TSA	Crawford, Franklin, Sebastian, Washington	38 min
May 25, 2:08 AM CDT	Flash Flood Warning	TSA	Benton, Carroll	112 min
May 25, 7:23 AM CDT	Flash Flood Warning	TSA	Carroll	12 hr

Nearby

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

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.