Alert archive / Arkansas / Flash Flood Warnings in 2011

Flash Flood Warning 53, NWS Tulsa, OK

May 24, 2011Carroll County, Arkansas

NWS Tulsa, OK issued this flash flood warning at May 24, 2011, 7:59 PM CDT for Carroll County, Arkansas. It was in force for 12 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, 7:59 PM CDT (00:59 UTC)
Expired: May 25, 2011, 7:45 AM CDT
In force: 12 hr
Issued by: NWS Tulsa, OK
Area: Storm-based polygon
Flood severity: None

County Carroll County, AR

The radar

The Springfield radar (KSGF), 99 km from the middle of the area, began a volume at 01:01 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, 1.0 hours before the alert went out and 55 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.

915 
WGUS54 KTSA 250059
FFWTSA
ARC015-251245-
/O.NEW.KTSA.FF.W.0053.110525T0059Z-110525T1245Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

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

THE NATIONAL WEATHER SERVICE IN TULSA HAS ISSUED A

* FLASH FLOOD WARNING FOR...
  NORTHWESTERN CARROLL COUNTY IN NORTHWEST ARKANSAS

* UNTIL 745 AM CDT WEDNESDAY

* AT 742 PM CDT...HIGH RELEASES CONTINUED OUT OF BEAVER LAKE
  DAM DUE TO HEAVY RAINFALL OVER THE LAST FEW DAYS. RELEASES 
  OF AROUND 52200 CFS WILL CONTINUE THROUGH THE NIGHT AND 
  TAILWATER READINGS WERE AROUND 947 FEET. THESE HIGH RELEASES
  WILL CONTINUE TO CREATE HIGH WATER ALONG THE WHITE RIVER AND 
  MAY CAUSE SMALLER TRIBUTARIES TO BACK UP WATER. ADDITIONAL 
  HEAVY RAINFALL MAY OCCUR TONIGHT...WHICH COULD LEAD TO 
  EVEN HIGHER WATER LEVELS AND FLASH FLOODING ALONG AND NEAR
  THE RIVER. 

* LOCATIONS THAT WILL CONTINUE TO BE AFFECTED BY HIGH WATER          
  INCLUDE...LOCATIONS NEAR THE WHITE RIVER BETWEEN BEAVER DAM
  AND TABLE ROCK LAKE.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

RESIDENTS DOWNSTREAM OF BEAVER DAM SHOULD REMAIN ALERT FOR POSSIBLE 
HIGHER RELEASES DUE TO ADDITIONAL RAINFALL OVERNIGHT. 

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.

BE ESPECIALLY CAUTIOUS AT NIGHT WHEN IT IS HARDER TO RECOGNIZE THE
DANGERS OF FLASH FLOODS. IT IS VERY DIFFICULT AT NIGHT TO TELL HOW 
MUCH WATER IS ON THE ROADS. 

&&

LAT...LON 3631 9380 3631 9382 3633 9386 3650 9386
      3650 9382 3650 9373 3649 9373

$$

The office that day

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

Issued	Product	Office	Counties	Lasted
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, 11:14 PM CDT	Flash Flood Warning	TSA	Benton, Washington	3 hr
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.