Alert archive / Arkansas / Severe Thunderstorm Warnings in 2007

Severe Thunderstorm Warning 26, NWS Little Rock, AR

March 31, 2007Bradley County, Arkansas

NWS Little Rock, AR issued this severe thunderstorm warning at Mar 31, 2007, 12:06 PM CDT for Bradley County, Arkansas. It was in force for 39 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, 2007, 12:06 PM CDT (17:06 UTC)
Expired
Mar 31, 2007, 12:45 PM CDT
In force
39 min
Issued by
NWS Little Rock, AR
Area
Counties, with a storm outline in the text

County Bradley County, AR

The radar

The Little Rock radar (KLZK), 153 km from the middle of the area, began a volume at 17:06 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, 5.1 hours before the alert went out and 184 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-pSkew-T log-p diagram, Shreveport, LA at 12:00Z on 2007-03-31Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 634 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Shreveport, LA at 12:00Z on 2007-03-31The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 267 square meters per square second.19395878Sfc1 km3 km6 km9 kmRMLM
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
634 J/kg
Mixed-layer CIN
-23 J/kg
Mixed-layer LCL
526 m above ground
0-6 km bulk shear
52 kt
0-1 km storm-relative helicity
267 m²/s²
0-3 km storm-relative helicity
334 m²/s²
Significant tornado parameter
1.2
Supercell composite
6.0

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 Mar 31, 11:00 AM CDT, 1 hour 6 minutes earlier.

Area forecast discussion, Mar 31, 11:00 AM CDT, 1 hour 6 minutes before
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Hazardous weather outlook, Mar 31, 5:00 AM CDT, 7 hours 6 minutes before
HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE LITTLE ROCK AR
500 AM CDT SAT MAR 31 2007

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-
500 AM CDT SAT MAR 31 2007

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

.DAY ONE...TODAY AND TONIGHT

LOW PRESSURE REMAINS OVER CENTRAL KANSAS THIS MORNING WITH THE
ASSOCIATED COLD FRONT LOCATED OVER EASTERN OKLAHOMA AND THEN CURVING
BACK INTO CENTRAL TEXAS. SHOWERS AND THUNDERSTORMS HAVE DEVELOPED
OVER WESTERN AND CENTRAL ARKANSAS THIS MORNING AND RAIN WILL BECOME
LIKELY ACROSS ALL OF THE FORECAST AREA SOMETIME DURING THE DAY AS
THE LOW MOVES OFF TO THE NORTHEAST AND DRAGS THE FRONT ACROSS THE
STATE.

THE FRONT IS FORECAST TO BE ALONG THE ARKANSAS AND OKLAHOMA BORDER
EARLY THIS MORNING...AND THEN ACROSS CENTRAL SECTIONS AROUND MID
AFTERNOON BEFORE FINALLY REACHING EASTERN ARKANSAS BY THE END OF THE
DAY. PRECIPITATION WILL END QUICKLY AFTER THE FRONT MOVES THROUGH AS
CONSIDERABLY DRIER AIR PUNCHES IN BEHIND THE SYSTEM WITH ALL RAIN
OUT OF THE AREA BY EARLY EVENING.

WHILE THE ATMOSPHERE APPEARS TO BE TOO STABLE INITIALLY FOR A
SIGNIFICANT SEVERE WEATHER OUTBREAK...THE POTENTIAL STILL EXISTS FOR
STRONG TO SEVERE THUNDERSTORMS ACROSS THE FORECAST AREA WITH THE
BEST CHANCES OF SEEING SEVERE WEATHER OVER THE EASTERN HALF OF THE
STATE...EAST OF A LINE FROM ARKADELPHIA TO MORRILTON TO MARSHALL TO
MOUNTAIN HOME. A LINE OF STORMS IS LIKELY TO DEVELOP OVER CENTRAL
SECTIONS NO LATER THAN MIDDAY AND SWEEP EAST. DAMAGING WINDS WILL BE
THE MAIN CONCERN. THE WIND STRUCTURE FOR THIS STORM SYSTEM IS NOT
IDEAL FOR TORNADO DEVELOPMENT BUT THEY CAN NOT BE COMPLETELY RULED
OUT...ESPECIALLY FURTHER TO THE EAST WHERE THE FRONT WILL ARRIVE
LATER IN THE DAY ALLOWING THAT PART OF THE STATE TO HEAT UP AND
DESTABILIZE SOMEWHAT.

.DAYS TWO THROUGH SEVEN...SUNDAY THROUGH FRIDAY

SEVERAL DRY AND UNSEASONABLY MILD DAYS WILL CONTINUE IN THE WAKE OF
SATURDAYS WEATHER SYSTEM AS HIGH PRESSURE WILL GENERALLY BE IN
CONTROL. THE UPPER AIR PATTERN WILL BE UNDERGOING A SIGNIFICANT
AMPLIFICATION DURING THE MIDDLE PART OF THE WEEK WHICH WILL RESULT
IN CONSIDERABLY COOLER AIR RETURNING TO THE NATURAL STATE.

A COLD FRONT IS FORECAST TO MOVE THROUGH THE STATE TUESDAY NIGHT BUT
ONLY SCATTERED SHOWERS AND THUNDERSTORMS ARE EXPECTED. THE UPPER
LEVEL FLOW OF AIR WILL TURN NORTHWEST BEHIND THIS FRONT AS A STRONG
UPPER LEVEL RIDGE DEVELOPS OVER THE ROCKIES. THIS RIDGE WILL BE
ANCHORED ON THE WEST BY A DEEP EASTERN PACIFIC TROF AND TO THE EAST
BY A DEEP UPPER LEVEL LOW OVER NEW ENGLAND. CANADIAN HIGH PRESSURE
WILL MOVE INTO THE NATIONS MID SECTION WITH DAY TIME HIGHS DROPPING
BACK TO LEVELS MORE REMINISCENT OF EARLY TO MID MARCH RATHER THAN
EARLY APRIL. ANOTHER COLD FRONT WITH YET ANOTHER SHOT OF COOL AIR IS
FORECAST TO COME THROUGH THURSDAY NIGHT AND INTO FRIDAY. AGAIN...
ONLY SCATTERED PRECIPITATION IS EXPECTED BUT ANOTHER SURGE OF COOL
AIR WILL ACCOMPANY THE FRONT.

.SPOTTER INFORMATION STATEMENT...

SPOTTER ACTIVATION MAY BE REQUIRED TODAY.
&&

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

56

In the hours before

Special weather statement, Mar 31, 10:59 AM CDT, 1 hour 7 minutes before
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The office that day

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

IssuedProductOfficeCountiesLasted
Mar 31, 8:36 AM CDTFlash Flood WarningLZKDallas, Ouachita114 min
Mar 31, 8:55 AM CDTSevere Thunderstorm WarningLZKCleveland, Jefferson50 min
Mar 31, 9:44 AM CDTSevere Thunderstorm WarningLZKArkansas, Jefferson46 min
Mar 31, 10:26 AM CDTSevere Thunderstorm WarningLZKCleveland, Lincoln49 min
Mar 31, 10:34 AM CDTTornado WarningLZKCleveland, Lincoln41 min

Nearby

Severe Thunderstorm Warnings in Arkansas, 2007Every severe thunderstorm warning in 2007

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.