Alert archive / Arkansas / Severe Thunderstorm Warnings in 2008

Severe Thunderstorm Warning 182, NWS Little Rock, AR

March 31, 20084 counties in Arkansas

NWS Little Rock, AR issued this severe thunderstorm warning at Mar 31, 2008, 10:16 PM CDT for 4 counties in Arkansas. It was in force for 44 min. No storm report in the archive falls inside the area while it was in force.

The area

The counties it named.

The facts

Issued: Mar 31, 2008, 10:16 PM CDT (03:16 UTC)
Expired: Mar 31, 2008, 11:00 PM CDT
In force: 44 min
Issued by: NWS Little Rock, AR
Area: Storm-based polygon

Counties Cleveland County, AR, Dallas County, AR, Grant County, AR, Jefferson County, AR

The radar

The Little Rock radar (KLZK), 81 km from the middle of the area, began a volume at 03:16 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 watch it was issued in

The SPC watch in force over the same counties when this warning went out.

Issued	Product	Office	Lasted
Mar 31, 6:12 PM CDT	Tornado Watch	SPC	7 hr

The nearest sounding before it

Shreveport, LA (KSHV), launched 00:00Z, 3.3 hours before the alert went out and 226 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: 698 J/kg
Mixed-layer CIN: -68 J/kg
Mixed-layer LCL: 1093 m above ground
0-6 km bulk shear: 40 kt
0-1 km storm-relative helicity: 248 m²/s²
0-3 km storm-relative helicity: 427 m²/s²
Significant tornado parameter: 0.8
Supercell composite: 5.4

Open this sounding in Storm Lab

What forecasters said that day

The local office's own words before this severe thunderstorm 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 severe thunderstorm warning went out at Mar 31, 6:37 PM CDT, 3 hours 39 minutes earlier.

Area forecast discussion, Mar 31, 6:37 PM CDT, 3 hours 39 minutes before

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Hazardous weather outlook, Mar 31, 10:10 PM CDT, 6 minutes before

HAZARDOUS WEATHER OUTLOOK...UPDATED
NATIONAL WEATHER SERVICE LITTLE ROCK AR
1010 PM CDT MON MAR 31 2008

ARZ003>007-012>016-021>025-030>034-037>047-052>057-062>069-011000-
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-
1010 PM CDT MON MAR 31 2008

THIS HAZARDOUS WEATHER OUTLOOK IS FOR A LARGE PART OF ARKANSAS.

.DAY ONE...TONIGHT

EXCESSIVE RUNOFF FROM HEAVY RAIN LAST WEEK WILL CONTINUE TO CAUSE
FLOODING OF RIVERS...STREAMS AND LOW WATER CROSSINGS...MAINLY IN
EASTERN ARKANSAS. THIS INCLUDES THE BLACK RIVER...THE LOWER WHITE
RIVER AND THE CACHE RIVER.

A COLD FRONT...CURRENTLY OVER NORTHWEST ARKANSAS...WILL CONTINUE TO
MOVE SOUTHWARD THROUGH THE NIGHT. THE FRONT WILL CONTINUE TO
INTERACT WITH PLENTIFUL MOISTURE OVER THE STATE. THE POTENTIAL FOR
LOCALLY HEAVY RAINFALL WILL EXIST UNTIL THE COLD FRONT PASSES. WITH
THE GROUND STILL SATURATED FROM RECENT RAINS...IT WILL NOT TAKE MUCH
RAIN FOR FLASH FLOODING TO OCCUR. AS SUCH...A FLASH FLOOD WATCH IS
IN EFFECT FOR THE MAJORITY OF THE STATE. THE HEAVY RAIN HAS ENDED
OVER THE NORTHWEST AND NORTH CENTRAL PARTS OF THE STATE AT THIS TIME.

THE SEVERE WEATHER THREAT CONTINUES TO DISSIPATE BUT STRONG
THUNDERSTORMS WILL STILL BE POSSIBLE THROUGH LATE EVENING. DAMAGING
WINDS AND LARGE HAIL THE PRIMARY CONCERNS. HOWEVER...THERE IS SOME
TURNING OF WIND WITH HEIGHT...WITH ISOLATED TORNADOES POSSIBLE.

.DAYS TWO THROUGH SEVEN...TUESDAY THROUGH SUNDAY

FLOODING WILL CONTINUE FOR SEVERAL MORE DAYS ALONG THE BLACK AND
CACHE RIVERS...AND THE LOWER REACHES OF THE WHITE RIVER.

ANOTHER COLD FRONT IS EXPECTED TO PASS THROUGH THE AREA THURSDAY AND
THURSDAY NIGHT. SEVERE WEATHER LOOKS POSSIBLE WITH THE PASSAGE OF
THIS COLD FRONT THURSDAY AFTERNOON. THE MAIN CONCERN AT THIS TIME IS
DAMAGING WINDS...HAIL AND FLASH FLOODING. THIS POTENTIAL SEVERE
WEATHER EVENT IS STILL SEVERAL DAYS OUT BUT WILL BE MONITORED
CLOSELY OVER THE NEXT FEW DAYS.

.SPOTTER INFORMATION STATEMENT...

SPOTTER ACTIVATION MAY BE REQUIRED THIS AFTERNOON AND TONIGHT.

&&

VISIT NWS LITTLE ROCK ON THE WEB. GO TO WEATHER.GOV AND CLICK ON
CENTRAL ARKANSAS.

56

In the hours before

Local storm report, Mar 31, 6:23 PM CDT, 3 hours 53 minutes before

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Local storm report, Mar 31, 6:29 PM CDT, 3 hours 47 minutes before

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Local storm report, Mar 31, 6:36 PM CDT, 3 hours 40 minutes before

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Local storm report, Mar 31, 7:17 PM CDT, 2 hours 59 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE LITTLE ROCK AR
717 PM CDT MON MAR 31 2008

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0716 PM     FLASH FLOOD      SADDLE                  36.35N 91.63W
03/31/2008                   FULTON             AR   TRAINED SPOTTER

            ALL LOW WATER CROSSINGS WERE REPORTED TO BE FLOODED.

&&

57

Local storm report, Mar 31, 7:23 PM CDT, 2 hours 53 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE LITTLE ROCK AR
723 PM CDT MON MAR 31 2008

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0720 PM     FLASH FLOOD      GILBERT                 35.99N 92.72W
03/31/2008                   SEARCY             AR   LAW ENFORCEMENT

            THE HIGHWAY 333 BRIDGE AT GILBERT IS FLOODED.

&&

57

Local storm report, Mar 31, 7:54 PM CDT, 2 hours 22 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE LITTLE ROCK AR
754 PM CDT MON MAR 31 2008

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0750 PM     FLASH FLOOD      ALLISON                 35.93N 92.12W
03/31/2008                   STONE              AR   TRAINED SPOTTER

            WATER WAS REPORTED TO BE OVERFLOWING DITCHES AND FLOODING
            ROADS.

&&

57

The office that day

Everything else NWS Little Rock, AR issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Mar 31, 7:00 PM CDT	Severe Thunderstorm Warning	LZK	Cleburne, Conway, Faulkner, Logan, Newton, Perry and 7 more	60 min
Mar 31, 7:37 PM CDT	Flash Flood Warning	LZK	Izard, Stone	3 hr
Mar 31, 7:47 PM CDT	River Flood Warning	LZK	White	26 hr
Mar 31, 7:50 PM CDT	River Flood Warning	LZK	Calhoun, Ouachita	25 days
Mar 31, 7:58 PM CDT	Severe Thunderstorm Warning	LZK	Faulkner, Perry, Pulaski, Saline, White	47 min
Mar 31, 8:31 PM CDT	Severe Thunderstorm Warning	LZK	Polk	44 min
Mar 31, 8:50 PM CDT	River Flood Warning	LZK	Fulton, Sharp	24 hr
Mar 31, 8:52 PM CDT	Flash Flood Warning	LZK	Sharp	113 min
Mar 31, 9:30 PM CDT	Flash Flood Warning	LZK	Faulkner, Garland, Lonoke, Perry, Prairie, Pulaski and 3 more	3 hr
Mar 31, 11:26 PM CDT	River Flood Warning	LZK	Randolph	21 hr
Mar 31, 11:26 PM CDT	River Flood Warning	LZK	Lawrence, Randolph	34 hr
Mar 31, 11:44 PM CDT	Severe Thunderstorm Warning	LZK	Arkansas, Desha, Drew, Lincoln	46 min
Apr 1, 10:12 AM CDT	River Flood Advisory	LZK	Independence	27 hr

Nearby

Severe Thunderstorm Warnings in Arkansas, 2008 Every severe thunderstorm warning in 2008

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.