Alert archive / Arkansas / Severe Thunderstorm Warnings in 2002

Severe Thunderstorm Warning 83, NWS Shreveport, LA

May 26, 2002Hempstead County, Nevada County, Arkansas

NWS Shreveport, LA issued this severe thunderstorm warning at May 26, 2002, 1:46 PM CDT for Hempstead County, Nevada County, Arkansas. It was in force for 59 min. 1 report came from inside the area while it was in force.

The area

The outline as issued, with what was reported inside it.

The facts

Issued: May 26, 2002, 1:46 PM CDT (18:46 UTC)
Expired: May 26, 2002, 2:45 PM CDT
In force: 59 min
Issued by: NWS Shreveport, LA
Area: Counties, with a storm outline in the text

Counties Hempstead County, AR, Nevada County, AR

The radar

The Shreveport radar (KSHV), 155 km from the middle of the area, began a volume at 18:48 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

Time	Report	Where	Remark
May 26, 2:15 PM CDT	Hail 0.75	Prescott, 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.

Did it verify

Not verified. The Iowa Environmental Mesonet's Cow found no qualifying storm report inside this severe thunderstorm warning while it was in force. That is not proof nothing happened: reports are thin where few people live.

Cow counts a report within 15 km of the polygon while the warning was in force: a tornado for a tornado warning; hail of 1 inch or more, a gust of 58 mph or more or wind damage for a severe thunderstorm warning; a flash flood report for a flash flood warning.

The nearest sounding before it

Shreveport, LA (KSHV), launched 12:00Z, 6.8 hours before the alert went out and 150 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: 1160 J/kg
Mixed-layer CIN: -59 J/kg
Mixed-layer LCL: 1182 m above ground
0-6 km bulk shear: 14 kt
0-1 km storm-relative helicity: -28 m²/s²
0-3 km storm-relative helicity: 3 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

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

000 
WUUS54 KSHV 261846
SVRSHV
ARC057-099-261945-
/NEW.KSHV.SV.W.0170.261845-261945/

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE SHREVEPORT LA
145 PM CDT SUN MAY 26 2002

THE NATIONAL WEATHER SERVICE IN SHREVEPORT HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  HEMPSTEAD COUNTY IN SOUTHWEST ARKANSAS
  NEVADA COUNTY IN SOUTHWEST ARKANSAS

* UNTIL 245 PM CDT

* AT 145 PM CDT...THE SHREVEPORT NATIONAL WEATHER SERVICE DOPPLER
  RADAR INDICATED A SEVERE THUNDERSTORM OVER PERRYTOWN...OR ABOUT 4
  MILES NORTHEAST OF HOPE...MOVING EAST AT 15 MPH.

THIS THUNDERSTORM WILL PRODUCE LARGE HAIL AND STRONG DAMAGING WINDS.
DO NOT REMAIN OUTSIDE.

REPEATING...THE NATIONAL WEATHER SERVICE HAS ISSUED A SEVERE
THUNDERSTORM WARNING FOR...
  HEMPSTEAD COUNTY IN SOUTHWEST ARKANSAS
  NEVADA COUNTY IN SOUTHWEST ARKANSAS
UNTIL 245 PM CDT.

LAT...LON 3370 9368 3357 9352 3393 9301 3412 9324

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 Shreveport, LA wrote its last area forecast discussion before this severe thunderstorm warning went out at May 26, 10:25 AM CDT, 3 hours 21 minutes earlier.

Area forecast discussion, May 26, 10:25 AM CDT, 3 hours 21 minutes before

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE SHREVEPORT LA
1025 AM CDT SUN MAY 26 2002

YESTERDAYS COLD FRONT JUST NORTH OF FORECAST AREA AT THIS TIME HAS
BECOME HARD TO PICK OUT TODAY BUT IS BEST DEPICTED ACROSS CENTRAL
OKLAHOMA INTO CENTRAL ARKANSAS. HIGH AND MID LEVEL CLOUDS SHOULD
THIN BY LATE MORNING WITH TEMPERATURES RISING TO THE MID AND UPPER
80S. DEWPOINTS ARE IN THE MID 60S TO THE LOWER 70S ACROSS THE
FORECAST AREA. SHV SOUNDING IS SHOWING MORE MOISTURE THAN YESTERDAY
WITH A 1.45 PRECIPITABLE WATER AND LITTLE CAP.

SHOWERS AND THUNDERSTORMS CONTINUED TO MOVE SLOWLY EAST ACROSS
OKLAHOMA ALL NIGHT AND WERE ONGOING ACROSS SOUTHEAST OKLAHOMA AND
SOUTHWEST ARKANSAS. PVA AHEAD OF VORTICITY MAXIMUM THAT NEW MESOETA
MODEL SHOWS IN SOUTHWEST ARKANSAS WILL MOVE EAST ACROSS SOUTHERN
ARKANSAS TODAY. DAYTIME HEATING AND OUTFLOW BOUNDARY INTERACTION
SHOULD PRODUCE MORE SCATTERED THUNDERSTORMS OVER ARKANSAS THIS
AFTERNOON AND EVENING. WILL UPDATE FOR SKY COVER WORDING AND TWEAK
TEMPERATURES IN A FEW PLACES.

09

.SHV...NONE.

In the hours before

Special weather statement, May 26, 10:30 AM CDT, 3 hours 16 minutes before

ARZ050-051-059>061-070>073-LAZ001>006-010>014-017>022-OKZ077-TXZ096-
097-108>112-124>126-136>138-149>153-165>167-261640-

HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE SHREVEPORT LA
1030 AM CDT SUN MAY 26 2002

AN UPPER LEVEL SYSTEM MOVING EAST ACROSS SOUTHEAST OKLAHOMA THIS
MORNING INTO SOUTH ARKANSAS THIS AFTERNOON...COMBINED WITH
HEATING...ABUNDANT MOISTURE IN THE LOW AND MID LEVELS OF THE
ATMOSPHERE AND INSTABILITY...WILL CAUSE SCATTERED SHOWERS AND
THUNDERSTORMS TO FORM THIS AFTERNOON AND EVENING. SOME STORMS MAY
BECOME STRONG...ESPECIALLY ACROSS SOUTHERN ARKANSAS...DURING THE
LATE AFTERNOON AND EARLY EVENING HOURS. ONLY SMALL HAIL IS EXPECTED
IN THE STRONGEST THUNDERSTORMS. ELSEWHERE SCATTERED THUNDERSTORMS
SHOULD DEVELOP BY LATE AFTERNOON AND CONTINUE IN EARLY EVENING DUE
TO DAYTIME HEATING IN COMBINATION WITH ENOUGH MOISTURE AND
INSTABILITY.

THE ACTIVATION OF EMERGENCY MANAGERS...SKYWARN NETWORKS AND STORM
SPOTTERS ARE NOT EXPECTED THIS AFTERNOON OR TONIGHT.

The office that day

Everything else NWS Shreveport, LA issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
May 26, 2:21 PM CDT	Severe Thunderstorm Warning	SHV	Miller	54 min
May 26, 2:44 PM CDT	Severe Thunderstorm Warning	SHV	Lafayette	61 min
May 26, 3:13 PM CDT	Severe Thunderstorm Warning	SHV	Columbia	62 min
May 26, 3:15 PM CDT	Severe Thunderstorm Warning	SHV	Miller	45 min

Nearby

Severe Thunderstorm Warnings in Arkansas, 2002 Every severe thunderstorm warning in 2002

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.