Alert archive / Arkansas / Flash Flood Warnings in 2011
Flash Flood Warning 140, NWS Little Rock, AR
NWS Little Rock, AR issued this flash flood warning at Nov 21, 2011, 8:23 PM CST for Hot Spring County, Arkansas. It was in force for 3 hr. No storm report in the archive falls inside the area while it was in force.
The area
The counties it named.
The facts
- Issued
- Nov 21, 2011, 8:23 PM CST (02:23 UTC)
- Expired
- Nov 21, 2011, 11:30 PM CST
- In force
- 3 hr
- Issued by
- NWS Little Rock, AR
- Area
- Storm-based polygon
- Flood severity
- None
County Hot Spring County, AR
The radar
The Little Rock radar (KLZK), 85 km from the middle of the area, began a volume at 02:24 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 00:00Z, 2.4 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.
- Mixed-layer CAPE
- 485 J/kg
- Mixed-layer CIN
- -43 J/kg
- Mixed-layer LCL
- 1180 m above ground
- 0-6 km bulk shear
- 54 kt
- 0-1 km storm-relative helicity
- 131 m²/s²
- 0-3 km storm-relative helicity
- 246 m²/s²
- Significant tornado parameter
- 0.3
- Supercell composite
- 2.0
What forecasters said that day
The local office's own words before this flash flood warning went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.
NWS Little Rock, AR wrote its last area forecast discussion before this flash flood warning went out at Nov 21, 5:50 PM CST, 2 hours 33 minutes earlier.
Area forecast discussion, Nov 21, 5:50 PM CST, 2 hours 33 minutes before
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</html>Hazardous weather outlook, Nov 21, 7:00 PM CST, 1 hour 23 minutes before
HAZARDOUS WEATHER OUTLOOK...UPDATED NATIONAL WEATHER SERVICE LITTLE ROCK AR 700 PM CST MON NOV 21 2011 ARZ003>007-012>016-021>025-030>034-037>047-052>057-062>069-221000- ARKANSAS-BAXTER-BOONE-BRADLEY-CALHOUN-CLARK-CLEBURNE-CLEVELAND- CONWAY-DALLAS-DESHA-DREW-FAULKNER-FULTON-GARLAND-GRANT-HOT SPRING- INDEPENDENCE-IZARD-JACKSON-JEFFERSON-JOHNSON-LINCOLN-LOGAN-LONOKE- MARION-MONROE-MONTGOMERY-NEWTON-OUACHITA-PERRY-PIKE-POLK-POPE- PRAIRIE-PULASKI-SALINE-SCOTT-SEARCY-SHARP-STONE-VAN BUREN-WHITE- WOODRUFF-YELL- 700 PM CST MON NOV 21 2011 THIS HAZARDOUS WEATHER OUTLOOK IS FOR A LARGE PART OF ARKANSAS. .DAY ONE...TONIGHT SCATTERED SHOWERS AND ISOLATED THUNDERSTORMS WILL CONTINUE MONDAY EVENING OVER CENTRAL AND NORTHERN AREAS...WITH LOCALIZED AREAS OF FLOODING POSSIBLE. DUE TO EARLIER DAY RAINS AND MONDAY EVENING RAIN...SOME RIVER FLOODING IS BECOMING A CONCERN. A FLASH FLOOD WATCH REMAINS IN EFFECT FOR MUCH OF ARKANSAS THROUGH TUESDAY AFTERNOON. TONIGHT SHOWERS AND THUNDERSTORMS WILL AGAIN REDEVELOP OVER MOST OF ARKANSAS...AS THE FRONTAL BOUNDARY REMAINS STALLED AND SOME UPPER LEVEL ENERGY MOVES ACROSS THE STATE. TONIGHT MOST OF THE WIDESPREAD HEAVY RAIN WILL BE POSSIBLE OVER THE NORTHWESTERN HALF OF THE STATE. BOTH FLASH FLOODING AND SOME INCREASED THREAT OF RIVER FLOODING WILL BE POSSIBLE. THERE IS A SLIGHT RISK FOR SEVERE THUNDERSTORMS AS WELL...WITH DAMAGING WINDS AND LARGE HAIL THE MAIN THREATS. HOWEVER...THE FLOODING AND FLASH FLOODING WILL BE OF GREATEST CONCERN. MONDAY NIGHT ANOTHER 1 TO 2 INCHES OF RAIN WILL BE POSSIBLE...AND WITH ISOLATED AREAS OF 2 TO 4 INCHES OF RAIN WILL BE POSSIBLE IN THE NORTHWESTERN HALF OF THE STATE. .DAYS TWO THROUGH SEVEN...TUESDAY THROUGH SATURDAY THE HEAVY RAIN WILL CONTINUE INTO THE MIDDAY HOURS ON TUESDAY WITH A STORM SYSTEM AND COLD FRONT FINALLY SWEEPING THROUGH THE STATE AND TAKING THE RAIN WITH ON TUESDAY AFTERNOON. ANOTHER ONE TO ONE AND A HALF INCHES OF RAIN WILL BE POSSIBLE IN MAINLY THE SOUTHEAST HALF OF THE STATE TUESDAY. THE THREAT FOR SOME SEVERE WEATHER WILL ALSO PERSIST TUESDAY AS ENOUGH INSTABILITY COULD EXIST ALONG AND AHEAD OF THE FRONT. THE MAIN SEVERE WEATHER THREAT WILL BE DAMAGING WINDS...GENERALLY OVER SOUTHEASTERN PORTIONS OF THE STATE. IT MUST BE NOTED THAT POTENTIAL CLOUD COVER COULD LIMIT THE SEVERE WEATHER THREAT. HIGH PRESSURE WILL BUILD INTO THE REGION TUESDAY NIGHT AND WEDNESDAY...WITH DRIER CONDITIONS EXPECTED. ANOTHER STRONG STORM SYSTEM WILL MOVE THROUGH THE AREA FRIDAY NIGHT INTO SATURDAY...WITH ANOTHER ROUND OF SHOWERS AND THUNDERSTORMS POSSIBLE. RIVER FLOODING WILL REMAIN A CONCERN THROUGH MUCH OF THE DAY TWO THROUGH DAY SEVEN PERIOD AS RIVERS REACT TO ALL OF THE RAIN. .SPOTTER INFORMATION STATEMENT... SPOTTER ACTIVATION MAY BE NEEDED ON TUESDAY IF THE SEVERE STORMS DO MATERIALIZE. && VISIT NWS LITTLE ROCK ON THE WEB. GO TO HTTP://WEATHER.GOV AND CLICK ON CENTRAL ARKANSAS. 51/63/59
In the hours before
Special weather statement, Nov 21, 4:44 PM CST, 3 hours 39 minutes before
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE LITTLE ROCK AR 444 PM CST MON NOV 21 2011 ARZ056-057-064-212315- ARKANSAS AR-JEFFERSON AR-LINCOLN AR- 444 PM CST MON NOV 21 2011 ...SIGNIFICANT WEATHER ADVISORY FOR NORTHEASTERN LINCOLN... SOUTHEASTERN JEFFERSON AND ARKANSAS COUNTIES UNTIL 515 PM CST... AT 440 PM CST...NATIONAL WEATHER SERVICE DOPPLER RADAR WAS TRACKING A STRONG THUNDERSTORM NEAR WOODVILLE...OR 15 MILES NORTHEAST OF STAR CITY...MOVING NORTHEAST AT 30 MPH. SMALL HAIL AROUND PEA SIZE...WIND GUSTS UP TO 40 MPH ARE EXPECTED WITH THIS STORM...ALONG WITH HEAVY RAIN. THE HEAVY RAIN MAY CAUSE LOCALIZED PONDING OF WATER ON ROADWAYS AND IN LOW LYING AREAS. * LOCATIONS IMPACTED INCLUDE... WOODVILLE... RICHARDSON... LITTLE BAYOU METO PARK... LINWOOD... LANGFORD... GRADY... GILLETT... ENGLISH LAKE... DOUGLAS... DE WITT... ALMYRA... VARNER... SWAN LAKE... STAPLE... SARASSA... REYDELL... MOSCOW... LODGE CORNER... IF THREATENING WEATHER APPROACHES YOUR AREA...TAKE SHELTER IN A STURDY BUILDING. TORRENTIAL RAIN...WHICH MAY FLOOD LOW LYING AREAS SUCH AS DITCHES AND UNDERPASSES...IS ALSO LIKELY. DO NOT DRIVE YOUR VEHICLE ON A FLOODED ROADWAY...TURN AROUND DONT DROWN! LAT...LON 3454 9144 3420 9110 3399 9156 3416 9184 TIME...MOT...LOC 2243Z 241DEG 25KT 3412 9165 59
Special weather statement, Nov 21, 6:12 PM CST, 2 hours 11 minutes before
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE LITTLE ROCK AR 612 PM CST MON NOV 21 2011 ARZ037-038-220040- SCOTT AR-YELL AR- 612 PM CST MON NOV 21 2011 ...SIGNIFICANT WEATHER ADVISORY FOR SOUTHWESTERN YELL AND EASTERN SCOTT COUNTIES UNTIL 645 PM CST... AT 609 PM CST...NATIONAL WEATHER SERVICE DOPPLER RADAR WAS TRACKING A STRONG THUNDERSTORM 2 MILES NORTHWEST OF MUDDY CREEK WMA...OR 18 MILES NORTH OF MT IDA...MOVING NORTHEAST AT 40 MPH. SMALL HAIL AROUND PEA SIZE AND WIND GUSTS UP TO 30 MPH ARE EXPECTED WITH THIS STORM...ALONG WITH HEAVY RAIN. THE HEAVY RAIN MAY CAUSE PONDING OF WATER ON ROADWAYS AND IN LOW LYING AREAS. * LOCATIONS IMPACTED INCLUDE... MUDDY CREEK WMA... FOURCHE VALLEY... WING... WALTREAK... ROVER... NOLA... GRAVELLY... CHULA... BRIGGSVILLE... BLUFFTON... BLUE BALL... WARDS CROSSING... WALNUT GROVE... SUNLIGHT BAY PARK... POTATO HILL MTN... PLEASANT HILL... LITTLE TEXAS... GILKEY... IF THREATENING WEATHER APPROACHES YOUR AREA...TAKE SHELTER IN A STURDY BUILDING. TORRENTIAL RAIN...WHICH MAY FLOOD LOW LYING AREAS SUCH AS DITCHES AND UNDERPASSES...IS ALSO LIKELY. DO NOT DRIVE YOUR VEHICLE ON A FLOODED ROADWAY...TURN AROUND DONT DROWN! LAT...LON 3512 9361 3494 9325 3474 9363 3487 9380 TIME...MOT...LOC 0011Z 227DEG 33KT 3482 9366 59
The office that day
Everything else NWS Little Rock, AR issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Nov 21, 6:12 PM CST | Special Weather Statement | LZK | Yell | 28 min |
| Nov 21, 6:33 PM CST | Flash Flood Warning | LZK | Logan, Montgomery, Polk, Scott, Yell | 3 hr |
| Nov 21, 7:54 PM CST | Flash Flood Warning | LZK | Cleburne, Conway, Faulkner, Johnson, Logan, Newton and 7 more | 3 hr |
| Nov 21, 8:35 PM CST | Severe Thunderstorm Warning | LZK | Polk, Scott | 25 min |
| Nov 21, 8:57 PM CST | Severe Thunderstorm Warning | LZK | Polk, Scott | 33 min |
| Nov 21, 9:19 PM CST | Tornado Warning | LZK | Polk, Scott | 26 min |
| Nov 21, 9:25 PM CST | Flash Flood Warning | LZK | Garland, Logan, Montgomery, Perry, Polk, Saline and 2 more | 3 hr |
| Nov 21, 9:35 PM CST | Tornado Warning | LZK | Scott | 25 min |
| Nov 21, 9:46 PM CST | Severe Thunderstorm Warning | LZK | Pike | 22 min |
| Nov 21, 9:56 PM CST | Tornado Warning | LZK | Logan, Scott, Yell | 34 min |
| Nov 21, 10:20 PM CST | Tornado Warning | LZK | Yell | 25 min |
| Nov 21, 10:48 PM CST | Flash Flood Warning | LZK | Cleburne, Conway, Faulkner, Johnson, Logan, Newton and 7 more | 3 hr |
| Nov 21, 11:10 PM CST | Severe Thunderstorm Warning | LZK | Clark, Montgomery, Pike, Polk | 35 min |
| Nov 21, 11:36 PM CST | Severe Thunderstorm Warning | LZK | Clark, Garland, Hot Spring, Montgomery, Saline | 24 min |
| Nov 21, 11:40 PM CST | Severe Thunderstorm Warning | LZK | Clark, Pike | 35 min |
| Nov 22, 12:10 AM CST | Special Weather Statement | LZK | Clark, Hot Spring | 45 min |
| Nov 22, 12:18 AM CST | Flash Flood Warning | LZK | Garland, Logan, Montgomery, Perry, Polk, Saline and 2 more | 4 hr |
| Nov 22, 12:48 AM CST | Special Weather Statement | LZK | Pulaski, Saline | 57 min |
| Nov 22, 1:18 AM CST | River Flood Warning | LZK | Yell | 30 hr |
| Nov 22, 1:30 AM CST | Flash Flood Warning | LZK | Cleburne, Conway, Faulkner, Logan, Perry, Pope and 5 more | 2 hr |
| Nov 22, 9:44 AM CST | River Flood Warning | LZK | Randolph | 47 hr |
| Nov 22, 9:48 AM CST | River Flood Advisory | LZK | Lawrence, Randolph | 23 hr |
| Nov 22, 10:39 AM CST | River Flood Advisory | LZK | Calhoun, Ouachita | 72 hr |
| Nov 22, 11:02 AM CST | River Flood Warning | LZK | Arkansas, Monroe | 6 days |
| Nov 22, 11:06 AM CST | River Flood Advisory | LZK | Independence, Jackson | 71 hr |
| Nov 22, 11:07 AM CST | River Flood Advisory | LZK | Prairie, White, Woodruff | 24 hr |
Nearby
Flash 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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.