Alert archive / Arkansas / Severe Thunderstorm Warnings in 2004

Severe Thunderstorm Warning 340, NWS Little Rock, AR

November 23, 2004Montgomery County, Arkansas

NWS Little Rock, AR issued this severe thunderstorm warning at Nov 23, 2004, 1:00 PM CST for Montgomery County, Arkansas. It was in force for 60 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
Nov 23, 2004, 1:00 PM CST (19:00 UTC)
Expired
Nov 23, 2004, 2:00 PM CST
In force
60 min
Issued by
NWS Little Rock, AR
Area
Counties, with a storm outline in the text

County Montgomery County, AR

The radar

The Western Arkansas radar (KSRX), 105 km from the middle of the area, began a volume at 19:04 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, 7.0 hours before the alert went out and 229 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 2004-11-23Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 472 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 2004-11-23The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 192 square meters per square second.1939587897Sfc1 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
472 J/kg
Mixed-layer CIN
-127 J/kg
Mixed-layer LCL
662 m above ground
0-6 km bulk shear
42 kt
0-1 km storm-relative helicity
192 m²/s²
0-3 km storm-relative helicity
187 m²/s²
Significant tornado parameter
0.0
Supercell composite
1.7

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 Nov 23, 10:00 AM CST, 3 hours earlier.

Area forecast discussion, Nov 23, 10:00 AM CST, 3 hours before
AREA FORECAST DISCUSSION...UPDATED
NATIONAL WEATHER SERVICE LITTLE ROCK AR
1000 AM CST TUE NOV 23 2004

.DISCUSSION...
UPDATE ON THE WAY THIS MORNING...
RAINFALL HAS JUST ABOUT ENDED FOR THE TIME BEING ACROSS THE CWA BUT
PRECIPITATION LIKELY TO RETURN LATER ON. RUC20 CONTINUES TO SUPPORT
THE IDEA OF BRINGING THE MAIN AREA OF PRECIPITATION LATER IN THE
DAY...STARTING OVER THE SOUTHWEST AND EVENTUALLY SPREADING OVER THE
REMAINDER OF THE CWA. WILL NEED TO ADJUST THE POPS ACCORDINGLY.

PRECIP STILL LIKELY TONIGHT AS UPPER LOW CURRENTLY OVER NEW MEXICO
BEGINS TO LIFT OUT. TEMPERATURE FORECAST WILL CONTINUE TO BE QUITE
TRICKY BUT FOR NOW WILL LEAVE ALL OVER FORECAST PARAMETERS IN PLACE.

&&

.LZK WATCHES/WARNINGS/ADVISORIES...NONE.
&&

56
Hazardous weather outlook, Nov 23, 10:30 AM CST, 2 hours 30 minutes before
HAZARDOUS WEATHER OUTLOOK...UPDATED
NATIONAL WEATHER SERVICE LITTLE ROCK AR
1030 AM CST TUE NOV 23 2004

ARZ003>007-012>016-021>025-030>034-037>047-052>057-062>069-241100-
BAXTER-BOONE-BRADLEY-CALHOUN-CLARK-CLEBURNE-CLEVELAND-CONWAY-DALLAS-
DESHA-DREW-FAULKNER-FULTON-GARLAND-GRANT-HOT SPRING-INDEPENDENCE-
IZARD-JACKSON-JOHNSON-LINCOLN-LOGAN-MARION-MONTGOMERY-NEWTON-
OUACHITA-PERRY-PIKE-POLK-POPE-SALINE-SCOTT-SEARCY-SHARP-STONE-
VAN BUREN-WHITE-YELL-ARKANSAS-JEFFERSON-LONOKE-MONROE-PRAIRIE-
PULASKI-WOODRUFF-
1030 AM CST TUE NOV 23 2004

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

.DAY ONE...TODAY AND TONIGHT

THERE IS A SLIGHT RISK OF SEVERE THUNDERSTORMS OVER THE NORTHERN
HALF OF ARKANSAS...AND A MODERATE RISK OF SEVERE THUNDERSTORMS OVER
THE SOUTHERN HALF LATER TODAY AND TONIGHT. A STRONG UPPER LEVEL
LOW WILL APPROACH THE AREA FROM THE WEST TODAY AND TONIGHT BEFORE
MOVING ACROSS NORTHWESTERN ARKANSAS EARLY WEDNESDAY. THE MAIN
WEATHER THREAT WILL BE LARGE HAIL.

A WARM FRONT MAY MAKE IT INTO PARTS OF SOUTHERN ARKANSAS LATE
TODAY OR TONIGHT. IF THIS OCCURS...THERE WILL BE A CHANCE OF
SEVERE THUNDERSTORMS WITH LARGE DAMAGING HAIL AND DAMAGING WIND
AS WELL AS ISOLATED TORNADOES NEAR OR JUST NORTH OF THE FRONT
LATE THIS AFTERNOON AND TONIGHT. ALSO...A SQUALL LINE OF STRONG TO
SEVERE THUNDERSTORMS WILL RAPIDLY MOVE ACROSS AREAS ALONG AND
SOUTH OF THE WARM FRONT TONIGHT. DAMAGING WIND WILL BE THE MAIN
SEVERE WEATHER WITH THIS LINE ALTHOUGH LARGE HAIL AND ISOLATED
TORNADOES COULD OCCUR WITH THIS.

THE THREAT OF SEVERE WEATHER SHOULD END BY EARLY WEDNESDAY MORNING.

LOCALLY HEAVY RAIN WILL BE POSSIBLE ACROSS THE AREA TODAY AND
ESPECIALLY TONIGHT. AT THIS TIME...NO WIDESPREAD FLOODING IS
EXPECTED...BUT LOCALIZED FLOODING OF POOR DRAINAGE AREAS IS
POSSIBLE.

.DAYS TWO THROUGH SEVEN...WEDNESDAY THROUGH MONDAY

STRONG GUSTY NORTHWEST TO NORTH WINDS WILL DEVELOP ACROSS ARKANSAS
ON WEDNESDAY BEHIND THE LOW PRESSURE SYSTEM. LAKE WIND ADVISORIES
MAY BE REQUIRED.

MUCH COLDER AIR WILL ALSO MOVE INTO ARKANSAS AND MOST OF THE
NORTHERN HALF OF THE STATE WILL HAVE A FREEZE THURSDAY MORNING.

.SPOTTER INFORMATION STATEMENT...

SPOTTER ACTIVATION MAY BE NECESSARY IN SOUTHERN ARKANSAS LATE
THIS AFTERNOON THROUGH MUCH OF TONIGHT.

38

The office that day

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

IssuedProductOfficeCountiesLasted
Nov 23, 1:46 PM CSTSevere Thunderstorm WarningLZKGarland44 min
Nov 23, 2:19 PM CSTSevere Thunderstorm WarningLZKPerry, Saline41 min
Nov 23, 3:39 PM CSTFlash Flood WarningLZKClark3 hr
Nov 23, 3:43 PM CSTFlash Flood WarningLZKPulaski, Saline3 hr
Nov 23, 3:45 PM CSTFlash Flood WarningLZKGarland3 hr
Nov 23, 3:55 PM CSTFlash Flood WarningLZKHot Spring3 hr
Nov 23, 4:24 PM CSTFlash Flood WarningLZKGrant3 hr
Nov 23, 4:25 PM CSTFlash Flood WarningLZKLonoke3 hr
Nov 23, 5:03 PM CSTFlash Flood WarningLZKCleveland, Jefferson3 hr
Nov 23, 5:16 PM CSTFlash Flood WarningLZKArkansas, Lincoln3 hr
Nov 23, 5:38 PM CSTSevere Thunderstorm WarningLZKArkansas52 min

Nearby

Severe Thunderstorm Warnings in Arkansas, 2004Every severe thunderstorm warning in 2004

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.