Alert archive / Arkansas / Severe Thunderstorm Watches in 2000

Severe Thunderstorm Watch 199

April 23, 200023 counties in Arkansas; Bolivar County, Coahoma County, Sunflower County, Mississippi

The Storm Prediction Center issued this severe thunderstorm watch at Apr 23, 2000, 8:00 PM CDT for 23 counties in Arkansas; Bolivar County, Coahoma County, Sunflower County, Mississippi. It was in force for 6 hr.

The area

The outline as issued.

The facts

Issued: Apr 23, 2000, 8:00 PM CDT (01:00 UTC)
Expired: Apr 24, 2000, 2:00 AM CDT
In force: 6 hr
Issued by: the Storm Prediction Center

All 26 counties

Arkansas County, AR, Cleveland County, AR, Conway County, AR, Cross County, AR, Dallas County, AR, Desha County, AR, Drew County, AR, Faulkner County, AR, Grant County, AR, Hot Spring County, AR, Jefferson County, AR, Lee County, AR, Lincoln County, AR, Lonoke County, AR, Monroe County, AR, Perry County, AR, Phillips County, AR, Prairie County, AR, Pulaski County, AR, Saline County, AR, St. Francis County, AR, White County, AR, Woodruff County, AR, Bolivar County, MS, Coahoma County, MS, Sunflower County, MS

The radar

The Little Rock radar (KLZK), 68 km from the middle of the area, began a volume at 01:02 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.

Warnings issued inside it

4 tornado, severe thunderstorm and flash flood warnings for its counties while it was in force.

Issued	Product	Office	Counties	Lasted
Apr 23, 8:12 PM CDT	Severe Thunderstorm Warning	LZK	Hot Spring	33 min
Apr 23, 8:28 PM CDT	Severe Thunderstorm Warning	LZK	Grant, Pulaski	47 min
Apr 23, 9:15 PM CDT	Severe Thunderstorm Warning	LZK	Lonoke	45 min
Apr 23, 9:50 PM CDT	Severe Thunderstorm Warning	LZK	Prairie	40 min

The nearest sounding before it

Little Rock, AR (KLZK), launched 00:00Z, 1.0 hours before the alert went out and 149 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: 190 J/kg
Mixed-layer CIN: -6 J/kg
Mixed-layer LCL: 449 m above ground
0-6 km bulk shear: 48 kt
0-1 km storm-relative helicity: 273 m²/s²
0-3 km storm-relative helicity: 364 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.2

Open this sounding in Storm Lab

The text

As transmitted, in the capitals the NWS used until 2016.

923 
WWUS9 KMKC 240058
SEL9  

SEL9  
MKC WW 240058
ARZ000-MSZ000-240700-

URGENT - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WATCH NUMBER 199
STORM PREDICTION CENTER NORMAN OK
758 PM CDT SUN APR 23 2000

THE STORM PREDICTION CENTER HAS ISSUED A
SEVERE THUNDERSTORM WATCH FOR PORTIONS OF

   CENTRAL AND EASTERN ARKANSAS                           
   NORTHWEST MISSISSIPPI                        

EFFECTIVE THIS SUNDAY NIGHT AND MONDAY MORNING FROM 800 PM UNTIL
200 AM CDT.

HAIL TO 2 INCHES IN DIAMETER...THUNDERSTORM WIND GUSTS TO 60
MPH...AND DANGEROUS LIGHTNING ARE POSSIBLE IN THESE AREAS.

THE SEVERE THUNDERSTORM WATCH AREA IS ALONG AND 70 STATUTE MILES
EAST AND WEST OF A LINE FROM 45 MILES NORTH NORTHEAST OF LITTLE
ROCK ARKANSAS TO 45 MILES SOUTH SOUTHEAST OF PINE BLUFF ARKANSAS.

REMEMBER...A SEVERE THUNDERSTORM WATCH MEANS CONDITIONS ARE
FAVORABLE FOR SEVERE THUNDERSTORMS IN AND CLOSE TO THE WATCH AREA. 
PERSONS IN THESE AREAS SHOULD BE ON THE LOOKOUT FOR THREATENING
WEATHER CONDITIONS AND LISTEN FOR LATER STATEMENTS AND POSSIBLE
WARNINGS.

OTHER WATCH INFORMATION...THIS SEVERE THUNDERSTORM WATCH REPLACES
TORNADO WATCH NUMBER 197.  WATCH NUMBER 197 WILL NOT BE IN EFFECT
AFTER 800 PM CDT.  CONTINUE...WW 198...

DISCUSSION...THREAT FOR HAIL/LOCALLY DAMGING WINDS THIS EVENING
ACROSS WATCH AREA AS REGION UNDERGOES SUSTAINED ASCENT IN EXIT
REGION OF 60+ KT WLY SPEED MAX CROSSING LA.

AVIATION...A FEW SEVERE THUNDERSTORMS WITH HAIL SURFACE AND ALOFT
TO 2 INCHES.  EXTREME TURBULENCE AND SURFACE WIND GUSTS TO 50
KNOTS.  A FEW CUMULONIMBI WITH MAXIMUM TOPS TO 450.  MEAN STORM
MOTION VECTOR 24025.

...CORFIDI

333,0925 351,0931 351,0904 333,0902

SPC that day

Everything else SPC issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Apr 23, 8:00 PM CDT	Tornado Watch	SPC	Ashley, Bradley, Calhoun, Chicot, Columbia, Union	6 hr
Apr 23, 9:30 PM CDT	Tornado Watch	SPC	Amite, Pike, Walthall, Wilkinson	6 hr
Apr 23, 10:45 PM CDT	Severe Thunderstorm Watch	SPC	Adams, Claiborne, Clarke, Copiah, Covington, Franklin and 18 more	4 hr
Apr 24, 1:15 AM CDT	Severe Thunderstorm Watch	SPC	George, Hancock, Harrison, Jackson, Pearl River, Stone	5 hr

Nearby

Severe Thunderstorm Watches in Arkansas, 2000 Severe Thunderstorm Watches in Mississippi, 2000 Every severe thunderstorm watch in 2000

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.