Alert archive / Arkansas / Severe Thunderstorm Warnings in 2001

Severe Thunderstorm Warning 417, NWS Little Rock, AR

October 24, 2001Jackson County, Arkansas

NWS Little Rock, AR issued this severe thunderstorm warning at Oct 24, 2001, 4:01 PM CDT for Jackson County, Arkansas. It was in force for 19 min. 1 report came from inside the area while it was in force.

The area

The counties it named, with what was reported inside it.

The facts

Issued
Oct 24, 2001, 4:01 PM CDT (21:01 UTC)
Expired
Oct 24, 2001, 4:20 PM CDT
In force
19 min
Issued by
NWS Little Rock, AR
Area
Whole counties; the outline is the Mesonet’s reconstruction

County Jackson County, AR

The radar

The Memphis radar (KNQA), 125 km from the middle of the area, began a volume at 21:04 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.

What was reported inside it

TimeReportWhereRemark
Oct 24, 4:05 PM CDTHail 0.75Grubbs, AR

NCEI Storm Data entries that began inside the alert's area while it was in force. Before 2003 the local storm report archive is thin, so this is the record of what happened rather than what was phoned in.

The watch it was issued in

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

IssuedProductOfficeLasted
Oct 24, 1:45 PM CDTTornado WatchSPC5 hr

The nearest sounding before it

Little Rock, AR (KLZK), launched 12:00Z, 9.0 hours before the alert went out and 143 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, Little Rock, AR at 12:00Z on 2001-10-24Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 753 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, Little Rock, AR at 12:00Z on 2001-10-24The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 131 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
753 J/kg
Mixed-layer CIN
-148 J/kg
Mixed-layer LCL
825 m above ground
0-6 km bulk shear
26 kt
0-1 km storm-relative helicity
131 m²/s²
0-3 km storm-relative helicity
138 m²/s²
Significant tornado parameter
0.1
Supercell composite
1.3

Open this sounding in Storm Lab

The text

The text of this product is not in the archive. The NWS text archive before 2002 is incomplete.

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 Oct 24, 3:00 PM CDT, 1 hour 1 minute earlier.

Area forecast discussion, Oct 24, 3:00 PM CDT, 1 hour 1 minute before
AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE LITTLE ROCK AR
300 PM CDT WED OCT 24 2001

LEFT OVER WEATHER WILL BE THE FIRST CONCERN. MOST OF THE
PRECIPITATION WILL BE OVER BY 00Z THU...BUT I WILL NEED TO HAVE SOME
MENTION OF IT EARLY. COOLING DOES NOT SHOW UP AS STRONG AS GUIDANCE
HAD WITH EARLIER PACKAGES. STRONG GRADIENT WILL KEEP THE AIR MIXED
SO IT WILL COUNTERACT A BIT THE COLD ADVECTION. WINDY TONIGHT WITH
CAUTION ADVISED ON LAKES FOR THE ENTIRE FORECAST AREA. NORTHWEST
ZONES WILL BE CLEAR RIGHT OFF THE BAT WITH THE REMAINING ZONES
CLEARING DURING THE NIGHT. DRY AIR WILL KEEP SUNNY/CLEAR SKIES FROM
THURSDAY ON INTO THE EXTENDED. AVN SURFACE WINDS SHOW GRADIENT
STAYING UP MOST OF THE TIME DURING THE SHORT RANGE FORECAST...SO
TOOK OUT THE MENTION OF FREEZE OR FROST SINCE TEMPS WILL STAY UP
ALONG WITH THE WINDS. IN THE EXTENDED...KEPT THE CHANCE OF FROST FOR
SUNDAY ACROSS THE NORTH ONLY. 32

.LIT...NONE.

In the hours before

Special weather statement, Oct 24, 1:30 PM CDT, 2 hours 31 minutes before
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Special weather statement, Oct 24, 2:03 PM CDT, 1 hour 58 minutes before
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Special weather statement, Oct 24, 3:23 PM CDT, 38 minutes before
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Special weather statement, Oct 24, 3:50 PM CDT, 11 minutes before
ARZ007-016-024-025-032>034-242130-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE LITTLE ROCK AR
350 PM CDT WED OCT 24 2001

TORNADO WATCH NUMBER 798 WHICH WAS ISSUED EARLIER THIS AFTERNOON FOR
PARTS OF NORTH CENTRAL AND NORTHEASTERN ARKANSAS IS NO LONGER IN
EFFECT FOR THE FOLLOWING COUNTIES...

...FAULKNER...CLEBURNE...AND SHARP...

TORNADO WATCH NUMBER 798 REMAINS IN EFFECT FOR THE FOLLOWING
COUNTIES IN NORTH CENTRAL AND NORTHEASTERN ARKANSAS...

...INDEPENDENCE...JACKSON...WHITE...AND WOODRUFF...

AT 350 PM CDT...A LINE OF THUNDERSTORMS...SOME STRONG...EXTENDED
FROM NEAR TUCKERMAN TO SEARCY TO NEAR CABOT. WIDELY SCATTERED
THUNDERSHOWERS WERE OCCURRING OVER THE REMAINDER OF CENTRAL AND EAST
CENTRAL ARKANSAS.

22

The office that day

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

IssuedProductOfficeCountiesLasted
Oct 24, 2:32 PM CDTSevere Thunderstorm WarningLZKFulton, Sharp28 min
Oct 24, 3:58 PM CDTSevere Thunderstorm WarningLZKWhite32 min
Oct 24, 4:17 PM CDTSevere Thunderstorm WarningLZKWoodruff43 min
Oct 24, 4:53 PM CDTSevere Thunderstorm WarningLZKPrairie22 min
Oct 24, 4:58 PM CDTSevere Thunderstorm WarningLZKMonroe32 min
Oct 24, 5:34 PM CDTSevere Thunderstorm WarningLZKBradley41 min
Oct 24, 6:04 PM CDTSevere Thunderstorm WarningLZKDesha21 min

Nearby

Severe Thunderstorm Warnings in Arkansas, 2001Every severe thunderstorm warning in 2001

Sources

The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; verification from NCEI's Storm Data; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.