Alert archive / Arkansas / Severe Thunderstorm Warnings in 2008

Severe Thunderstorm Warning 64, NWS Little Rock, AR

February 12, 2008Cleburne County, Arkansas

NWS Little Rock, AR issued this severe thunderstorm warning at Feb 12, 2008, 12:19 AM CST for Cleburne County, Arkansas. It was in force for 41 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: Feb 12, 2008, 12:19 AM CST (06:19 UTC)
Expired: Feb 12, 2008, 1:00 AM CST
In force: 41 min
Issued by: NWS Little Rock, AR
Area: Storm-based polygon

County Cleburne County, AR

The radar

The Little Rock radar (KLZK), 81 km from the middle of the area, began a volume at 06:21 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
Feb 11, 9:48 PM CST	Severe Thunderstorm Watch	SPC	4 hr

The nearest sounding before it

Little Rock, AR (KLZK), launched 00:00Z, 6.3 hours before the alert went out and 205 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: 0 J/kg
Mixed-layer CIN: No buoyant parcel
Mixed-layer LCL: 960 m above ground
0-6 km bulk shear: 53 kt
0-1 km storm-relative helicity: 528 m²/s²
0-3 km storm-relative helicity: 584 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

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 Feb 11, 11:40 PM CST, 39 minutes earlier.

Area forecast discussion, Feb 11, 11:40 PM CST, 39 minutes before

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Hazardous weather outlook, Feb 11, 9:00 PM CST, 3 hours 19 minutes before

HAZARDOUS WEATHER OUTLOOK...UPDATED
NATIONAL WEATHER SERVICE LITTLE ROCK AR
900 PM CST MON FEB 11 2008

ARZ003>007-012>016-021>025-030>034-037>047-052>057-062>069-121100-
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-
900 PM CST MON FEB 11 2008

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

.DAY ONE...OVERNIGHT

THE NATIONAL WEATHER SERVICE IN LITTLE ROCK HAS ISSUED AN ICE STORM
WARNING...WHICH IS IN EFFECT UNTIL 3 AM CST TUESDAY FOR NORTH
CENTRAL ARKANSAS NEAR THE MISSOURI BORDER. AREAS OF FREEZING RAIN
ARE EXPECTED TO DEVELOP THIS EVENING. THERE MAY BE SOME SLEET AS
WELL. SIGNIFICANT ICING MAY OCCUR IN SOME AREAS...ESPECIALLY GIVEN
THAT THUNDERSTORMS WILL PRODUCE LOCALLY HEAVY PRECIPITATION.

A WINTER WEATHER ADVISORY IS ALSO IN EFFECT FOR THOSE COUNTIES JUST
SOUTH OF THE ICE STORM AREA FOR NORTH CENTRAL ARKANSAS. IT IS IN
EFFECT UNTIL 3 AM CST TUESDAY. AREAS OF FREEZING RAIN ARE EXPECTED
TO DEVELOP THIS EVENING OVER NORTH CENTRAL ARKANSAS. THERE MAY BE
SOME SLEET AS WELL.

SHOWERS AND THUNDERSTORMS ARE EXPECTED TO INCREASE IN COVERAGE AND
INTENSITY DURING THE OVERNIGHT HOURS. WHILE WIDESPREAD SEVERE
WEATHER IS NOT EXPECTED...SOME STORMS COULD BECOME SEVERE...WHICH
WILL BE CAPABLE OF PRODUCING LARGE HAIL.

.DAYS TWO THROUGH SEVEN...TUESDAY THROUGH SUNDAY

SHOWERS AND THUNDERSTORMS WILL CONTINUE INTO TUESDAY...AS THE COLD
FRONT MOVES SOUTHEAST ACROSS THE STATE. RAINFALL WILL MOVE OUT OF
THE STATE TUESDAY AFTERNOON.

DRY WEATHER WILL RETURN FOR WEDNESDAY AND THURSDAY...BEFORE ANOTHER
SYSTEM MOVES IN FOR THE UPCOMING WEEKEND.

.SPOTTER INFORMATION STATEMENT...

SPOTTER ACTIVATION IS NOT ANTICIPATED.

&&

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

38

In the hours before

Local storm report, Feb 11, 10:20 PM CST, 1 hour 59 minutes before

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Local storm report, Feb 11, 11:05 PM CST, 1 hour 14 minutes before

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The office that day

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

Issued	Product	Office	Counties	Lasted
Feb 11, 6:45 PM CST	Winter Weather Advisory	LZK	Baxter, Fulton, Izard, Sharp	2 hr
Feb 11, 8:30 PM CST	Severe Thunderstorm Warning	LZK	Logan, Pope, Yell	30 min
Feb 11, 8:52 PM CST	Severe Thunderstorm Warning	LZK	Yell	38 min
Feb 11, 9:00 PM CST	Ice Storm Warning	LZK	Baxter, Fulton, Izard, Marion, Sharp	9 hr
Feb 11, 9:00 PM CST	Winter Weather Advisory	LZK	Cleburne, Independence, Jackson, Stone	9 hr
Feb 11, 9:11 PM CST	Severe Thunderstorm Warning	LZK	Polk	49 min
Feb 11, 9:22 PM CST	Severe Thunderstorm Warning	LZK	Stone	23 min
Feb 11, 9:28 PM CST	Severe Thunderstorm Warning	LZK	Yell	47 min
Feb 11, 9:50 PM CST	Severe Thunderstorm Warning	LZK	Van Buren	40 min
Feb 11, 9:58 PM CST	Severe Thunderstorm Warning	LZK	Garland, Saline	47 min
Feb 11, 10:01 PM CST	Severe Thunderstorm Warning	LZK	Pope	44 min
Feb 11, 10:11 PM CST	Severe Thunderstorm Warning	LZK	Cleburne, Stone	49 min
Feb 11, 10:34 PM CST	Severe Thunderstorm Warning	LZK	Conway	41 min
Feb 11, 10:49 PM CST	Severe Thunderstorm Warning	LZK	Izard	41 min
Feb 11, 10:57 PM CST	Severe Thunderstorm Warning	LZK	Logan, Scott, Yell	48 min
Feb 11, 11:16 PM CST	Severe Thunderstorm Warning	LZK	Polk	29 min
Feb 11, 11:34 PM CST	Severe Thunderstorm Warning	LZK	Conway, Pope	26 min
Feb 11, 11:36 PM CST	Severe Thunderstorm Warning	LZK	Cleburne, Van Buren	54 min
Feb 11, 11:53 PM CST	Severe Thunderstorm Warning	LZK	Montgomery, Polk	52 min
Feb 12, 12:17 AM CST	Severe Thunderstorm Warning	LZK	Conway, Van Buren	43 min
Feb 12, 6:18 AM CST	Severe Thunderstorm Warning	LZK	Bradley, Calhoun, Cleveland, Drew, Lincoln	23 min
Feb 12, 9:57 AM CST	River Flood Warning	LZK	Independence, Jackson, Lawrence	36 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.