Alert archive / Oklahoma / Flash Flood Warnings in 2011
Flash Flood Warning 29, NWS Tulsa, OK
NWS Tulsa, OK issued this flash flood warning at May 12, 2011, 8:35 PM CDT for LeFlore County, Sequoyah County, Oklahoma; Crawford County, Sebastian County, Arkansas. It was in force for 4 hr. 6 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
- May 12, 2011, 8:35 PM CDT (01:35 UTC)
- Expired
- May 13, 2011, 12:30 AM CDT
- In force
- 4 hr
- Issued by
- NWS Tulsa, OK
- Area
- Storm-based polygon
- Flood severity
- None
Counties Crawford County, AR, Sebastian County, AR, LeFlore County, OK, Sequoyah County, OK
The radar
The Western Arkansas radar (KSRX), 12 km from the middle of the area, began a volume at 01:36 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 12, 9:03 PM CDT | FLASH FLOOD | Arkoma, OK | FLOODING ON STATELINE ROAD IN ARKOMA. |
| May 12, 9:05 PM CDT | FLASH FLOOD | Van Buren, AR | STREETS FLOODING IN VAN BUREN. |
| May 12, 9:10 PM CDT | FLASH FLOOD | Pocola, OK | POCOLA EMERGENCY MANAGER REPORTS SEVERAL STREETS CLOSED DUE TO FLOODING. |
| May 12, 9:18 PM CDT | FLASH FLOOD | Fort Smith, AR | MAJOR STREET FLOODING BEING REPORTED IN FORT SMITH. WATER UP TO TWO FEET DEEP IN SOME LOCATIONS. |
| May 12, 9:20 PM CDT | FLASH FLOOD | Fort Smith, AR | WATER RESCUES HAVE BEEN REPORTED IN NORTHERN SEBASTIAN COUNTY. |
| May 12, 10:03 PM CDT | HEAVY RAIN 3.64 | Fort Smith, AR | 3.64 INCHES OF RAIN IN TWO HOURS AT THE FORT SMITH AIRPORT FROM 8 PM TO 10 PM. |
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, 1.6 hours before the alert went out and 175 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.
- Mixed-layer CAPE
- 1521 J/kg
- Mixed-layer CIN
- -8 J/kg
- Mixed-layer LCL
- 1233 m above ground
- 0-6 km bulk shear
- 38 kt
- 0-1 km storm-relative helicity
- 84 m²/s²
- 0-3 km storm-relative helicity
- 153 m²/s²
- Significant tornado parameter
- 0.7
- Supercell composite
- 6.8
The text
As transmitted, in the capitals the NWS used until 2016.
984 WGUS54 KTSA 130135 FFWTSA ARC033-131-OKC079-135-130530- /O.NEW.KTSA.FF.W.0029.110513T0135Z-110513T0530Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ BULLETIN - EAS ACTIVATION REQUESTED FLASH FLOOD WARNING NATIONAL WEATHER SERVICE TULSA OK 835 PM CDT THU MAY 12 2011 THE NATIONAL WEATHER SERVICE IN TULSA HAS ISSUED A * FLASH FLOOD WARNING FOR... NORTHEASTERN LE FLORE COUNTY IN SOUTHEAST OKLAHOMA... NORTHERN SEBASTIAN COUNTY IN WEST CENTRAL ARKANSAS... SOUTHEASTERN SEQUOYAH COUNTY IN EAST CENTRAL OKLAHOMA... SOUTHERN CRAWFORD COUNTY IN NORTHWEST ARKANSAS... * UNTIL 1230 AM CDT * AT 833 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED THUNDERSTORMS WITH VERY HEAVY RAIN...TRAINING OVER THE WARNED AREA. RADAR ESTIMATES TWO TO THREE INCHES OF RAINFALL HAS ALREADY OCCURRED WITH AN ADDITIONAL 1 TO 2 INCHES WILL BE POSSIBLE THROUGH 10 PM. FLOODING CAN BE EXPECTED IN THE FORT SMITH AND VAN BUREN AREAS...AND ALSO IN ADJACENT NORTHERN PORTIONS OF LE FLORE COUNTY. * RUNOFF FROM THIS EXCESSIVE RAINFALL WILL CAUSE FLASH FLOODING TO OCCUR. SOME LOCATIONS THAT COULD EXPERIENCE FLOODING INCLUDE...FORT SMITH...MOUNTAINBURG...VAN BUREN...ALMA...ARKOMA...BARLING... BLOOMER...BOKOSHE...BONANZA...CAMERON...DYER...FIGURE FIVE... HACKETT...JENNY LIND...LAVACA...MOFFETT...MULDROW...PANAMA... POCOLA...ROLAND...RUDY AND SPIRO. 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 3568 9408 3531 9408 3500 9483 3531 9481 $$
4 follow-up statements
558 WGUS74 KTSA 130230 FFSTSA FLASH FLOOD STATEMENT NATIONAL WEATHER SERVICE TULSA OK 930 PM CDT THU MAY 12 2011 ARC033-131-OKC079-135-130530- /O.CON.KTSA.FF.W.0029.000000T0000Z-110513T0530Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ CRAWFORD AR-SEBASTIAN AR-LE FLORE OK-SEQUOYAH OK- 930 PM CDT THU MAY 12 2011 ...FLASH FLOOD WARNING REMAINS IN EFFECT FOR SOUTHEASTERN SEQUOYAH... NORTHEASTERN LE FLORE...NORTHERN SEBASTIAN AND SOUTHERN CRAWFORD COUNTIES UNTIL 1230 AM CDT... AT 925 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED THUNDERSTORMS WITH VERY HEAVY RAIN OVER NORTHERN SEBASTIAN COUNTY AND FAR NORTHEAST LE FLORE COUNTIES. NEARLY 3 INCHES OF RAIN HAS FALLEN AT THE FORT SMITH AIRPORT SINCE 8 PM. UP TO TWO FEET OF WATER WAS REPORTED OVER SOME STREETS IN THE FORT SMITH AREA. FLOODING HAS ALSO BEEN REPORTED IN VAN BUREN AND POCOLA AND ARKOMA. AN ADDITIONAL INCH OF RAIN WILL BE POSSIBLE THROUGH 11 PM. SEVERAL WATER RESCUES HAVE BEEN REPORTED IN THE FORT SMITH AREA. DO NOT DRIVE INTO WATER... RUNOFF FROM THIS EXCESSIVE RAINFALL WILL CAUSE FLASH FLOODING TO OCCUR. SOME LOCATIONS THAT WILL EXPERIENCE FLASH FLOODING INCLUDE... FORT SMITH...VAN BUREN...ALMA...ARKOMA...BARLING...BLOOMER... BONANZA...CAMERON...DYER...FIGURE FIVE...HACKETT...JENNY LIND... LAVACA...MOFFETT...PANAMA...POCOLA...ROLAND...RUDY AND SPIRO. 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. LOW WATER CROSSINGS IN HILLY TERRAIN ARE ESPECIALLY DANGEROUS IN HEAVY RAIN. DO NOT ATTEMPT TO TRAVEL ACROSS FLOODED ROADS. FIND ALTERNATE ROUTES. IT ONLY TAKES A FEW INCHES OF SWIFTLY FLOWING WATER TO CARRY VEHICLES AWAY. A 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. && LAT...LON 3531 9408 3500 9483 3532 9469 3568 9408 $$
828 WGUS74 KTSA 130320 FFSTSA FLASH FLOOD STATEMENT NATIONAL WEATHER SERVICE TULSA OK 1020 PM CDT THU MAY 12 2011 ARC033-131-OKC079-135-130530- /O.CON.KTSA.FF.W.0029.000000T0000Z-110513T0530Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ CRAWFORD AR-SEBASTIAN AR-LE FLORE OK-SEQUOYAH OK- 1020 PM CDT THU MAY 12 2011 ...FLASH FLOOD WARNING REMAINS IN EFFECT FOR SOUTHEASTERN SEQUOYAH...NORTHEASTERN LE FLORE...NORTHERN SEBASTIAN AND SOUTHERN CRAWFORD COUNTIES UNTIL 1230 AM CDT... ...MAJOR FLOODING HAS BEEN REPORTED... AT 1012 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED THUNDERSTORMS WITH VERY HEAVY RAIN OVER THE WARNED AREA. THREE TO FOUR INCHES OF RAINFALL HAS ALREADY OCCURRED WITH AN ADDITIONAL 2 TO 3 INCHES POSSIBLE THROUGH 11 PM. THUNDERSTORMS CONTINUE TO DEVELOP ACROSS NORTHEAST LE FLORE COUNTY... ACROSS FORT SMITH...AND INTO EASTERN CRAWFORD COUNTY. THIS IS EXPECTED TO CONTINUE THROUGH 11 PM. WATER RESCUES HAVE BEEN REPORTED IN THE FORT SMITH AREA. WATER HAS BEEN REPORTED TO BE TWO FEET DEEP OVER SOME ROADS. DO NOT DRIVE INTO WATER THAT IS COVERING A ROAD. YOUR LIFE MAY DEPEND ON IT. RUNOFF FROM THIS EXCESSIVE RAINFALL IS CAUSING MAJOR FLASH FLOODING TO OCCUR. SOME LOCATIONS THAT WILL EXPERIENCE FLASH FLOODING INCLUDE...FORT SMITH...VAN BUREN...ALMA...ARKOMA...BARLING...DYER... FIGURE FIVE...HACKETT...JENNY LIND...LAVACA...MOFFETT...PANAMA... POCOLA...RUDY AND SPIRO. 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. BE ESPECIALLY CAUTIOUS AT NIGHT WHEN IT IS HARDER TO RECOGNIZE THE DANGERS OF FLOODING. TURN AROUND AND MOVE UP TO HIGHER GROUND TO ESCAPE FLOOD WATERS. DO NOT STAY IN AREAS SUBJECT TO FLOODING WHEN WATER BEGINS RISING. FLOODING IS OCCURRING OR IS IMMINENT. MOST FLOOD RELATED DEATHS OCCUR IN VEHICLES. DO NOT ATTEMPT TO CROSS WATER COVERED BRIDGES...DIPS... OR LOW WATER CROSSINGS. NEVER TRY TO CROSS A FLOWING STREAM... EVEN A SMALL ONE...ON FOOT OR IN A VEHICLE. A 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. && LAT...LON 3531 9408 3500 9483 3532 9469 3568 9408 $$
445 WGUS74 KTSA 130505 FFSTSA FLASH FLOOD STATEMENT NATIONAL WEATHER SERVICE TULSA OK 1205 AM CDT FRI MAY 13 2011 ARC033-131-OKC079-135-130530- /O.CON.KTSA.FF.W.0029.000000T0000Z-110513T0530Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ CRAWFORD AR-SEBASTIAN AR-LE FLORE OK-SEQUOYAH OK- 1205 AM CDT FRI MAY 13 2011 ...FLASH FLOOD WARNING REMAINS IN EFFECT FOR SOUTHEASTERN SEQUOYAH... NORTHEASTERN LE FLORE...NORTHERN SEBASTIAN AND SOUTHERN CRAWFORD COUNTIES UNTIL 1230 AM CDT... AT 1153 PM CDT...RADAR INDICATED THAT THE HEAVY RAINFALL HAD ENDED ACROSS THE WARNED AREA. ALTHOUGH NO ADDITIONAL RAINFALL IS EXPECTED...RADAR ESTIMATES THAT BETWEEN 3 AND 7 INCHES OF RAIN MAY HAVE FALLEN IN PORTIONS OF NORTHERN LE FLORE...NORTHERN SEBASTIAN...AND SOUTHERN CRAWFORD COUNTIES DURING THE EVENING. ALTHOUGH THE WATER IS RECEDING...SOME AREAS WHERE DRAINAGE IS POOR MAY CONTINUE TO EXPERIENCE FLOODING FOR SEVERAL MORE HOURS. SOME LOCATIONS INCLUDE...FORT SMITH...VAN BUREN...ALMA...ARKOMA... BARLING...BLOOMER...BONANZA...CAMERON...DYER...FIGURE FIVE... HACKETT...JENNY LIND...LAVACA...MOFFETT...POCOLA...ROLAND...AND RUDY. PRECAUTIONARY/PREPAREDNESS ACTIONS... DO NOT DRIVE YOUR VEHICLE INTO AREAS WHERE WATER COVERS THE ROAD TO UNKNOWN DEPTHS. IT ONLY TAKES TWO FEET OF RUSHING WATER TO CARRY AWAY MOST SPORT UTILITY VEHICLES AND PICKUPS. TAKE A DIFFERENT ROUTE TO REACH YOUR DESTINATION OR WAIT UNTIL THE WATER RECEDES. REMEMBER... MOST FLOOD RELATED DEATHS OCCUR IN AUTOMOBILES. BE ESPECIALLY CAUTIOUS AT NIGHT WHEN IT IS HARDER TO RECOGNIZE THE DANGERS OF FLOODING. IF FLASH FLOODING IS OBSERVED ACT QUICKLY. DO NOT ENTER THE WATER. TURN AROUND AND MOVE UP TO HIGHER GROUND TO ESCAPE FLOOD WATERS. LOW WATER CROSSINGS IN HILLY TERRAIN ARE ESPECIALLY DANGEROUS IN HEAVY RAIN. DO NOT ATTEMPT TO TRAVEL ACROSS FLOODED ROADS. DO NOT ATTEMPT TO CROSS SWIFTLY FLOWING WATERS OR WATERS OF UNKNOWN DEPTH BY FOOT OR BY AUTOMOBILE. && LAT...LON 3531 9408 3500 9483 3532 9469 3568 9408 $$
771 WGUS74 KTSA 130531 FFSTSA FLASH FLOOD STATEMENT NATIONAL WEATHER SERVICE TULSA OK 1231 AM CDT FRI MAY 13 2011 ARC033-131-OKC079-135-130539- /O.EXP.KTSA.FF.W.0029.000000T0000Z-110513T0530Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ CRAWFORD AR-SEBASTIAN AR-LE FLORE OK-SEQUOYAH OK- 1231 AM CDT FRI MAY 13 2011 ...THE FLASH FLOOD WARNING THAT WAS IN EFFECT FOR FOR SOUTHEASTERN SEQUOYAH...NORTHEASTERN LE FLORE...NORTHERN SEBASTIAN AND SOUTHERN CRAWFORD COUNTIES WILL BE ALLOWED TO EXPIRE AT 1230 AM CDT... HOWEVER...AN AREAL FLOOD WARNING HAS BEEN ISSUED FOR THE SAME AREA UNTIL 630 AM FRIDAY MORNING... THE RAIN HAS ENDED AND IS NOT EXPECTED TO PRODUCE ADDITIONAL FLASH FLOODING. HOWEVER...IT MAY TAKE SEVERAL HOURS FOR HIGH WATER TO COMPLETELY RECEDE. THE AREAL FLOOD WARNING WILL REMAIN IN EFFECT THROUGH THE NIGHT. LAT...LON 3531 9408 3500 9483 3532 9469 3568 9408 $$
The office that day
Everything else NWS Tulsa, OK issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| May 12, 7:02 PM CDT | Special Weather Statement | TSA | Delaware | 28 min |
| May 12, 7:08 PM CDT | Severe Thunderstorm Warning | TSA | LeFlore, Sequoyah | 67 min |
| May 12, 7:13 PM CDT | Special Weather Statement | TSA | Mayes | 32 min |
| May 12, 7:22 PM CDT | Severe Thunderstorm Warning | TSA | Delaware, Mayes | 38 min |
| May 12, 7:26 PM CDT | Areal Flood Advisory | TSA | LeFlore, Sequoyah | 3 hr |
| May 12, 7:35 PM CDT | Severe Thunderstorm Warning | TSA | Delaware, Ottawa | 23 min |
| May 12, 8:08 PM CDT | Special Weather Statement | TSA | Pittsburg | 37 min |
| May 12, 8:19 PM CDT | Special Weather Statement | TSA | Cherokee | 26 min |
| May 12, 8:42 PM CDT | Special Weather Statement | TSA | Pittsburg | 33 min |
| May 12, 8:52 PM CDT | Severe Thunderstorm Warning | TSA | LeFlore | 68 min |
| May 12, 8:55 PM CDT | Special Weather Statement | TSA | Pittsburg | 35 min |
| May 13, 12:23 AM CDT | Areal Flood Warning | TSA | LeFlore, Sequoyah | 6 hr |
| May 12, 7:00 PM CDT | Severe Thunderstorm Warning | TSA | Carroll, Madison | 42 min |
| May 12, 7:01 PM CDT | Special Weather Statement | TSA | Franklin | 44 min |
| May 12, 7:12 PM CDT | Severe Thunderstorm Warning | TSA | Madison, Washington | 20 min |
| May 12, 7:15 PM CDT | Severe Thunderstorm Warning | TSA | Carroll, Madison | 26 min |
| May 12, 7:49 PM CDT | Areal Flood Advisory | TSA | Carroll, Franklin, Madison, Washington | 56 min |
| May 12, 7:49 PM CDT | Special Weather Statement | TSA | Carroll | 41 min |
| May 12, 8:12 PM CDT | Special Weather Statement | TSA | Crawford, Franklin, Sebastian | 63 min |
| May 12, 8:57 PM CDT | Areal Flood Advisory | TSA | Carroll, Franklin, Madison, Washington | 108 min |
| May 12, 9:00 PM CDT | Special Weather Statement | TSA | Crawford | 30 min |
| May 12, 9:37 PM CDT | Special Weather Statement | TSA | Franklin | 53 min |
| May 12, 9:59 PM CDT | Special Weather Statement | TSA | Franklin | 46 min |
| May 12, 10:32 PM CDT | Special Weather Statement | TSA | Crawford | 28 min |
Nearby
Flash Flood Warnings in Oklahoma, 2011Flash Flood Warnings in Arkansas, 2011Every 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; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.