Alert archive / Arkansas / Flash Flood Warnings in 2009

Flash Flood Warning 49, NWS Tulsa, OK

September 21, 20094 counties in Arkansas; Sequoyah County, Oklahoma

NWS Tulsa, OK issued this flash flood warning at Sep 21, 2009, 8:08 PM CDT for 4 counties in Arkansas; Sequoyah County, Oklahoma. It was in force for 6 hr. 4 reports 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: Sep 21, 2009, 8:08 PM CDT (01:08 UTC)
Expired: Sep 22, 2009, 2:15 AM CDT
In force: 6 hr
Issued by: NWS Tulsa, OK
Area: Storm-based polygon
Flood severity: None

Counties Crawford County, AR, Franklin County, AR, Madison County, AR, Washington County, AR, Sequoyah County, OK

The radar

The Western Arkansas radar (KSRX), 42 km from the middle of the area, began a volume at 01:11 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
Sep 21, 9:30 PM CDT	FLOOD	Witter, AR	HIGHWAY 23 BETWEEN WITTER AND HUNTSVILLE DURING THE NIGHT...EVIDENCED BY SIGNIFICANT DEBRIS ON THE ROAD EARLY THIS MORNING. REPORTED BY EMPLOYEE AT THE WITTER POST OFFICE.
Sep 21, 9:31 PM CDT	FLASH FLOOD	Chester, AR	STATE POLICE REPORTING MUCH OF THE TOWN HAS FLOODING WITH REPORTS OF AN OVERTURNED CAR IN THE WATER. RELAYED BY WFO LITTLE ROCK.
Sep 21, 9:56 PM CDT	FLASH FLOOD	Chester, AR	EMERGENCY MANAGER REPORTS SHOPS FLOODING IN TOWN. ALSO DEBRIS FROM FLOODING REPORTEDLY LITTERING THE ARKANSAS AND MISSOURI RAILROAD TRACK THROUGH TOWN. PREVIOUS REPORT OF AN OVERTURNED CAR WAS ERRONEOUS.
Sep 21, 10:06 PM CDT	FLASH FLOOD	Ozark, AR	FLOOD DAMAGE TO THE OZARK MOTEL AND HILLBILLY QUICK STOP LOCATED AT THE 1700-1800 BLOCK OF WEST COMMERCIAL STREET.

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 00:00Z, 1.1 hours before the alert went out and 144 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: 53 J/kg
Mixed-layer CIN: -66 J/kg
Mixed-layer LCL: 461 m above ground
0-6 km bulk shear: 44 kt
0-1 km storm-relative helicity: -179 m²/s²
0-3 km storm-relative helicity: -171 m²/s²
Significant tornado parameter: 0.0
Supercell composite: -0.6

Open this sounding in Storm Lab

The text

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

000 
WGUS54 KTSA 220108
FFWTSA
ARC033-047-087-143-OKC135-220715-
/O.NEW.KTSA.FF.W.0049.090922T0108Z-090922T0715Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE TULSA OK
808 PM CDT MON SEP 21 2009

THE NATIONAL WEATHER SERVICE IN TULSA HAS ISSUED A

* FLASH FLOOD WARNING FOR...
  SEQUOYAH COUNTY IN EAST CENTRAL OKLAHOMA
  CRAWFORD COUNTY IN NORTHWEST ARKANSAS
  SOUTHERN MADISON COUNTY IN NORTHWEST ARKANSAS
  SOUTHERN WASHINGTON COUNTY IN NORTHWEST ARKANSAS
  NORTHERN FRANKLIN COUNTY IN WEST CENTRAL ARKANSAS

* UNTIL 215 AM CDT TUESDAY

* AT 807 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED
  THUNDERSTORMS WITH HEAVY RAIN ALONG A LINE EXTENDING FROM 5 MILES
  EAST OF KINGSTON TO 2 MILES WEST OF VIAN...MOVING SOUTH AT 25      
  MPH. RADAR INDICATES THAT 1 TO 3 INCHES OF RAIN HAS ALREADY        
  FALLEN.   ANOTHER 1 TO 3 INCHES WILL BE POSSIBLE THROUGH 215 AM    
  CDT TUESDAY.

* LOCATIONS THAT WILL CONTINUE TO BE AFFECTED BY HEAVY RAIN
  INCLUDE...BRUSHY...LEE CREEK...NATURAL DAM...SAINT PAUL...SHORT...
  CHESTER...SALLISAW...BOSTON...PETTIGREW...CEDARVILLE...
  MOUNTAINBURG...FERN...FIGURE FIVE...GANS...CASS...RUDY...MULDROW...
  ROLAND...ALMA...DYER AND MULBERRY.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

WHEN WATER COVERS THE ROADWAY REMEMBER...TURN AROUND DONT DROWN. 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 3577 9351 3576 9368 3550 9369 3545 9427
      3546 9440 3539 9450 3535 9480 3547 9506
      3554 9513 3565 9511 3565 9448 3579 9449
      3612 9347 3611 9346

$$

The office that day

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

Issued	Product	Office	Counties	Lasted
Sep 21, 7:01 PM CDT	Severe Thunderstorm Warning	TSA	Benton, Carroll, Madison, Washington	59 min
Sep 21, 7:54 PM CDT	Severe Thunderstorm Warning	TSA	Crawford, Franklin, Madison, Washington	66 min
Sep 21, 9:00 PM CDT	Severe Thunderstorm Warning	TSA	Crawford, Franklin	60 min
Sep 21, 9:18 PM CDT	Severe Thunderstorm Warning	TSA	Crawford, Franklin, Sebastian	27 min
Sep 21, 9:43 PM CDT	Severe Thunderstorm Warning	TSA	Franklin	32 min
Sep 21, 7:08 PM CDT	Severe Thunderstorm Warning	TSA	Rogers, Tulsa	23 min
Sep 21, 7:09 PM CDT	Severe Thunderstorm Warning	TSA	Creek	51 min
Sep 21, 7:20 PM CDT	Severe Thunderstorm Warning	TSA	McIntosh, Okfuskee, Okmulgee, Pittsburg	40 min
Sep 21, 7:31 PM CDT	Areal Flood Warning	TSA	Craig, Mayes, Nowata, Rogers, Tulsa, Washington	4 hr
Sep 21, 7:59 PM CDT	River Flood Warning	TSA	Ottawa	61 hr
Sep 21, 7:59 PM CDT	Severe Thunderstorm Warning	TSA	Haskell, Latimer, LeFlore, McIntosh, Muskogee, Pittsburg	61 min
Sep 21, 8:29 PM CDT	Special Weather Statement	TSA	LeFlore	61 min
Sep 21, 9:10 PM CDT	Severe Thunderstorm Warning	TSA	Choctaw, Pittsburg, Pushmataha	61 min
Sep 21, 9:28 PM CDT	Severe Thunderstorm Warning	TSA	LeFlore	32 min
Sep 21, 9:49 PM CDT	Severe Thunderstorm Warning	TSA	LeFlore, Pushmataha	56 min
Sep 21, 10:00 PM CDT	Tornado Warning	TSA	LeFlore	12 min

Nearby

Flash Flood Warnings in Arkansas, 2009 Flash Flood Warnings in Oklahoma, 2009 Every flash 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; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.