Alert archive / Texas / Flash Flood Warnings in 2011

Flash Flood Warning 4, NWS Shreveport, LA

April 25, 2011Red River County, Texas; McCurtain County, Oklahoma

NWS Shreveport, LA issued this flash flood warning at Apr 25, 2011, 12:29 PM CDT for Red River County, Texas; McCurtain County, Oklahoma. It was in force for 4 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: Apr 25, 2011, 12:29 PM CDT (17:29 UTC)
Expired: Apr 25, 2011, 4:30 PM CDT
In force: 4 hr
Issued by: NWS Shreveport, LA
Area: Storm-based polygon
Flood severity: None

Counties McCurtain County, OK, Red River County, TX

The radar

The Western Arkansas radar (KSRX), 146 km from the middle of the area, began a volume at 17:29 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

Shreveport, LA (KSHV), launched 12:00Z, 5.5 hours before the alert went out and 218 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: -34 J/kg
Mixed-layer LCL: 759 m above ground
0-6 km bulk shear: 44 kt
0-1 km storm-relative helicity: 231 m²/s²
0-3 km storm-relative helicity: 491 m²/s²
Significant tornado parameter: 2.2
Supercell composite: 11.5

Open this sounding in Storm Lab

The text

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

361 
WGUS54 KSHV 251729
FFWSHV
OKC089-TXC387-252130-
/O.NEW.KSHV.FF.W.0004.110425T1729Z-110425T2130Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE SHREVEPORT LA
1229 PM CDT MON APR 25 2011

THE NATIONAL WEATHER SERVICE IN SHREVEPORT HAS ISSUED A

* FLASH FLOOD WARNING FOR...
  NORTHWESTERN RED RIVER COUNTY IN NORTHEAST TEXAS...
  MCCURTAIN COUNTY IN SOUTHEAST OKLAHOMA...

* UNTIL 430 PM CDT

* AT 1223 PM CDT...NATIONAL WEATHER SERVICE METEOROLOGISTS DETECTED
  VERY HEAVY RAIN FROM A THUNDERSTORM 8 MILES NORTH OF MANCHESTER...
  OR 22 MILES EAST OF HUGO...MOVING NORTHEAST AT 35 MPH. LOCAL EMERGENCY
  MANAGEMENT REPORTED THAT ROADS IN THE SOUTHWESTERN PORTION OF MCCURTAIN
  COUNTY ARE BEGINNING TO SEE FLOODING.

* OTHER LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO
  VALLIANT...MILLERTON...GARVIN...SLIM...RUFE...WRIGHT CITY...
  GOLDEN...GLOVER...OAK HILL...RINGOLD...PICKENS...HOCHATOWN...MOUNT
  HERMAN...BETHEL...BATTIEST...SHERWOOD...SMITHVILLE...WATSON AND
  BEACHTON.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

DO NOT DRIVE YOUR VEHICLE INTO AREAS WHERE THE WATER COVERS THE
ROADWAY. THE WATER DEPTH MAY BE TOO GREAT TO ALLOW YOUR CAR TO CROSS
SAFELY. MOVE TO HIGHER GROUND.

&&

LAT...LON 3428 9457 3374 9510 3381 9531 3389 9531
      3392 9528 3391 9525 3396 9525 3395 9516
      3416 9517 3417 9515 3425 9515 3426 9505
      3451 9505 3452 9452

$$

12

2 follow-up statements

475 
WGUS74 KSHV 251812
FFSSHV

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE SHREVEPORT LA
112 PM CDT MON APR 25 2011

OKC089-TXC387-252130-
/O.CON.KSHV.FF.W.0004.000000T0000Z-110425T2130Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
MCCURTAIN OK-RED RIVER TX-
112 PM CDT MON APR 25 2011

...A FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 430 PM CDT FOR RED
RIVER AND MCCURTAIN COUNTIES...

AT 105 PM CDT...NATIONAL WEATHER SERVICE METEOROLOGISTS CONTINUED TO
DETECT THUNDERSTORMS CAPABLE OF PRODUCING FLASH FLOODING OVER THE WARNED 
AREA. ADDITIONAL STORMS OVER NORTHEAST TEXAS WILL MOVE INTO THESE SAME 
AREAS...AND CONTINUE FLASH FLOODING OVER THE NEXT FEW HOURS. 

LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO WATSON...
SMITHVILLE...SHERWOOD...RUFE...RINGOLD...PICKENS...MOUNT HERMAN...
HOCHATOWN...BETHEL...BEACHTON AND BATTIEST.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

DO NOT DRIVE YOUR VEHICLE INTO AREAS WHERE THE WATER COVERS THE
ROADWAY. THE WATER DEPTH MAY BE TOO GREAT TO ALLOW YOUR CAR TO CROSS
SAFELY. MOVE TO HIGHER GROUND.

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

&&

LAT...LON 3428 9457 3374 9510 3381 9531 3389 9531
      3392 9528 3391 9525 3396 9525 3395 9516
      3416 9517 3417 9515 3425 9515 3426 9505
      3451 9505 3452 9452

$$

12

099 
WGUS74 KSHV 251928
FFSSHV

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE SHREVEPORT LA
228 PM CDT MON APR 25 2011

OKC089-TXC387-252130-
/O.CON.KSHV.FF.W.0004.000000T0000Z-110425T2130Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
MCCURTAIN OK-RED RIVER TX-
228 PM CDT MON APR 25 2011

...A FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 430 PM CDT FOR RED
RIVER AND MCCURTAIN COUNTIES...

AT 217 PM CDT...NATIONAL WEATHER SERVICE METEOROLOGISTS CONTINUED TO
DETECT THUNDERSTORMS CAPABLE OF PRODUCING FLASH FLOODING OVER THE 
WARNED AREA. ADDITIONAL THUNDERSTORMS WILL LIKELY MOVE INTO THIS 
AREA...KEEPING THE THREAT FOR FLASH FLOODING HIGH.

LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO WATSON...
SMITHVILLE...SHERWOOD...RUFE...RINGOLD...PICKENS...MOUNT HERMAN...
HOCHATOWN...BETHEL...BEACHTON AND BATTIEST.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

DO NOT DRIVE YOUR VEHICLE INTO AREAS WHERE THE WATER COVERS THE
ROADWAY. THE WATER DEPTH MAY BE TOO GREAT TO ALLOW YOUR CAR TO CROSS
SAFELY. MOVE TO HIGHER GROUND.

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

&&

LAT...LON 3428 9457 3374 9510 3381 9531 3389 9531
      3392 9528 3391 9525 3396 9525 3395 9516
      3416 9517 3417 9515 3425 9515 3426 9505
      3451 9505 3452 9452

$$

12

The office that day

Everything else NWS Shreveport, LA issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Apr 24, 7:33 PM CDT	Lake Wind Advisory	SHV	Angelina, Camp, Cass, Cherokee, Franklin, Gregg and 13 more	87 min
Apr 24, 9:35 PM CDT	Severe Thunderstorm Warning	SHV	Red River	55 min
Apr 25, 12:09 AM CDT	Severe Thunderstorm Warning	SHV	Franklin, Red River, Titus	66 min
Apr 25, 12:41 AM CDT	Severe Thunderstorm Warning	SHV	Bowie, Red River, Titus	64 min
Apr 25, 3:48 AM CDT	Lake Wind Advisory	SHV	Angelina, Bowie, Camp, Cass, Cherokee, Franklin and 15 more	21 hr
Apr 25, 5:19 AM CDT	Severe Thunderstorm Warning	SHV	Red River	56 min
Apr 25, 6:14 AM CDT	Severe Thunderstorm Warning	SHV	Bowie, Red River	61 min
Apr 25, 12:11 PM CDT	Severe Thunderstorm Warning	SHV	Red River	49 min
Apr 25, 1:37 PM CDT	Severe Thunderstorm Warning	SHV	Red River	38 min
Apr 25, 1:48 PM CDT	Tornado Warning	SHV	Red River	27 min
Apr 25, 2:36 PM CDT	Severe Thunderstorm Warning	SHV	Camp, Smith, Upshur, Wood	54 min
Apr 25, 2:37 PM CDT	Severe Thunderstorm Warning	SHV	Bowie, Franklin, Red River, Titus	38 min
Apr 25, 2:55 PM CDT	Severe Thunderstorm Warning	SHV	Cherokee, Smith	50 min
Apr 25, 3:14 PM CDT	Severe Thunderstorm Warning	SHV	Bowie, Red River	46 min
Apr 25, 3:14 PM CDT	Tornado Warning	SHV	Camp, Cass, Harrison, Marion, Morris, Upshur	46 min
Apr 25, 3:30 PM CDT	Tornado Warning	SHV	Cherokee, Gregg, Rusk, Smith	45 min
Apr 25, 3:49 PM CDT	Flash Flood Watch	SHV	Bowie, Camp, Cass, Franklin, Morris, Red River and 1 more	39 hr
Apr 25, 4:11 PM CDT	Severe Thunderstorm Warning	SHV	Harrison, Panola, Rusk	19 min
Apr 25, 4:39 PM CDT	Severe Thunderstorm Warning	SHV	Bowie, Camp, Franklin, Morris, Red River, Titus	51 min
Apr 25, 5:14 PM CDT	Tornado Warning	SHV	Bowie, Red River, Titus	31 min
Apr 25, 5:30 PM CDT	Severe Thunderstorm Warning	SHV	Bowie, Cass, Morris, Red River, Titus	45 min
Apr 25, 6:02 PM CDT	Severe Thunderstorm Warning	SHV	Bowie, Franklin, Red River, Titus	43 min
Apr 25, 6:15 PM CDT	Tornado Warning	SHV	Bowie	45 min
Apr 25, 6:24 PM CDT	Severe Thunderstorm Warning	SHV	Bowie, Camp, Franklin, Morris, Red River, Titus	36 min
Apr 25, 6:54 PM CDT	Severe Thunderstorm Warning	SHV	Bowie, Cass	51 min
Apr 25, 6:57 PM CDT	Severe Thunderstorm Warning	SHV	Bowie, Camp, Cass, Franklin, Marion, Morris and 3 more	48 min
Apr 24, 9:49 PM CDT	Severe Thunderstorm Warning	SHV	McCurtain	41 min
Apr 24, 10:17 PM CDT	Severe Thunderstorm Warning	SHV	McCurtain	58 min
Apr 25, 12:14 AM CDT	Severe Thunderstorm Warning	SHV	McCurtain	76 min
Apr 25, 12:59 PM CDT	Severe Thunderstorm Warning	SHV	McCurtain	61 min
Apr 25, 1:22 PM CDT	Tornado Warning	SHV	McCurtain	23 min
Apr 25, 2:05 PM CDT	River Flood Warning	SHV	McCurtain	16 hr
Apr 25, 2:10 PM CDT	Tornado Warning	SHV	McCurtain	35 min
Apr 25, 2:53 PM CDT	Flash Flood Warning	SHV	McCurtain	4 hr
Apr 25, 3:39 PM CDT	Severe Thunderstorm Warning	SHV	McCurtain	51 min
Apr 25, 4:02 PM CDT	Tornado Warning	SHV	McCurtain	28 min
Apr 25, 4:31 PM CDT	Flash Flood Warning	SHV	McCurtain	4 hr
Apr 25, 5:27 PM CDT	Tornado Warning	SHV	McCurtain	33 min
Apr 25, 6:43 PM CDT	Flash Flood Warning	SHV	McCurtain	3 hr

Nearby

Flash Flood Warnings in Texas, 2011 Flash Flood Warnings in Oklahoma, 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.