Alert archive / Arkansas / Flash Flood Warnings in 2015

Flash Flood Warning 77, NWS Tulsa, OK

May 29, 2015Crawford County, Sebastian County, Arkansas

NWS Tulsa, OK issued this flash flood warning at May 29, 2015, 4:07 PM CDT for Crawford County, Sebastian County, Arkansas. It was in force for 113 min. 1 report came from inside the area while it was in force.

The area

The outline as issued, with what was reported inside it.

The facts

Issued: May 29, 2015, 4:07 PM CDT (21:07 UTC)
Expired: May 29, 2015, 6:00 PM CDT
In force: 113 min
Issued by: NWS Tulsa, OK
Area: Storm-based polygon
Flood severity: None

Counties Crawford County, AR, Sebastian County, AR

The radar

The Western Arkansas radar (KSRX), 11 km from the middle of the area, began a volume at 21:08 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.

What was reported inside it

Time	Report	Where	Remark
May 29, 4:15 PM CDT	FLASH FLOOD	Fort Smith, AR	SWIFTLY FLOWING WATER ON ROADWAYS IN THE EAST SIDE OF FORT SMITH. PHOTO AND VIDEO VIA SOCIAL MEDIA.

Local storm reports filed while the alert was in force, from inside its polygon or its counties.

The nearest sounding before it

Springfield, MO (KSGF), launched 12:00Z, 9.1 hours before the alert went out and 176 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: 535 J/kg
Mixed-layer CIN: -52 J/kg
Mixed-layer LCL: 864 m above ground
0-6 km bulk shear: 33 kt
0-1 km storm-relative helicity: 130 m²/s²
0-3 km storm-relative helicity: 123 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

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

804 
WGUS54 KTSA 292107
FFWTSA
ARC033-131-292300-
/O.NEW.KTSA.FF.W.0077.150529T2107Z-150529T2300Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE TULSA OK
407 PM CDT FRI MAY 29 2015

THE NATIONAL WEATHER SERVICE IN TULSA HAS ISSUED A

* FLASH FLOOD WARNING FOR...
  NORTHERN SEBASTIAN COUNTY IN WEST CENTRAL ARKANSAS...
  SOUTHERN CRAWFORD COUNTY IN NORTHWEST ARKANSAS...

* UNTIL 600 PM CDT

* AT 407 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED   
THUNDERSTORMS WITH VERY HEAVY RAIN OVER THE WARNED AREA. RUNOFF WILL 
OCCUR RAPIDLY.

* RUNOFF FROM THIS EXCESSIVE RAINFALL WILL CAUSE FLASH FLOODING TO
  OCCUR. SOME LOCATIONS THAT COULD EXPERIENCE FLOODING INCLUDE...FORT
  SMITH...VAN BUREN...ALMA...BARLING...BLOOMER...BONANZA...DYER...
  FIGURE FIVE...FORT SMITH REGIONAL AIRPORT...JENNY LIND...LAVACA AND
  RUDY.

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.

A FLASH FLOOD WARNING MEANS THAT FLOODING IS IMMINENT OR OCCURRING.
IF YOU ARE IN THE WARNING AREA MOVE TO HIGHER GROUND IMMEDIATELY.
RESIDENTS LIVING ALONG STREAMS AND CREEKS SHOULD TAKE IMMEDIATE
PRECAUTIONS TO PROTECT LIFE AND PROPERTY. DO NOT ATTEMPT TO CROSS
SWIFTLY FLOWING WATERS OR WATERS OF UNKNOWN DEPTH BY FOOT OR BY
AUTOMOBILE.

TO REPORT FLOODING...HAVE THE NEAREST LAW ENFORCEMENT AGENCY RELAY
YOUR REPORT TO THE NATIONAL WEATHER SERVICE FORECAST OFFICE IN TULSA.

&&

LAT...LON 3524 9413 3524 9443 3543 9444 3552 9445
      3554 9410

$$

The office that day

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

Issued	Product	Office	Counties	Lasted
May 29, 3:15 PM CDT	Special Weather Statement	TSA	Sebastian	45 min
May 29, 3:32 PM CDT	Special Weather Statement	TSA	Crawford	43 min
May 29, 3:33 PM CDT	Special Weather Statement	TSA	Sebastian	42 min
May 29, 3:51 PM CDT	Severe Thunderstorm Warning	TSA	Crawford, Washington	39 min
May 29, 4:19 PM CDT	Special Weather Statement	TSA	Crawford	26 min
May 29, 4:20 PM CDT	Special Weather Statement	TSA	Benton	25 min
May 29, 4:25 PM CDT	Special Weather Statement	TSA	Franklin	35 min
May 29, 4:29 PM CDT	Flash Flood Warning	TSA	Benton, Carroll, Crawford, Franklin, Madison, Sebastian and 1 more	6 hr
May 29, 4:31 PM CDT	Severe Thunderstorm Warning	TSA	Crawford, Franklin, Madison, Washington	29 min
May 29, 4:37 PM CDT	Tornado Warning	TSA	Crawford, Washington	23 min
May 29, 4:45 PM CDT	Special Weather Statement	TSA	Benton	30 min
May 29, 4:55 PM CDT	Severe Thunderstorm Warning	TSA	Madison, Washington	22 min
May 29, 5:17 PM CDT	Special Weather Statement	TSA	Washington	28 min
May 29, 6:32 PM CDT	Special Weather Statement	TSA	Carroll	28 min

Nearby

Flash Flood Warnings in Arkansas, 2015 Every flash flood warning in 2015

Sources

The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.