Alert archive / Arkansas / Severe Thunderstorm Watches in 2000

Severe Thunderstorm Watch 385

May 27, 200016 counties in Arkansas; 14 parishes in Louisiana; Panola County, Texas

The Storm Prediction Center issued this severe thunderstorm watch at May 27, 2000, 8:45 PM CDT for 16 counties in Arkansas; 14 parishes in Louisiana; Panola County, Texas. It was in force for 4 hr.

The area

The outline as issued.

The facts

Issued
May 27, 2000, 8:45 PM CDT (01:45 UTC)
Expired
May 28, 2000, 1:00 AM CDT
In force
4 hr
Issued by
the Storm Prediction Center
All 31 counties

Ashley County, AR, Bradley County, AR, Calhoun County, AR, Clark County, AR, Cleveland County, AR, Columbia County, AR, Dallas County, AR, Desha County, AR, Drew County, AR, Hempstead County, AR, Lafayette County, AR, Lincoln County, AR, Miller County, AR, Nevada County, AR, Ouachita County, AR, Union County, AR, Bienville Parish, LA, Bossier Parish, LA, Caddo Parish, LA, Caldwell Parish, LA, Claiborne Parish, LA, De Soto Parish, LA, Jackson Parish, LA, Lincoln Parish, LA, Morehouse Parish, LA, Ouachita Parish, LA, Red River Parish, LA, Union Parish, LA, Webster Parish, LA, Winn Parish, LA, Panola County, TX

Warnings issued inside it

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

IssuedProductOfficeCountiesLasted
May 27, 8:48 PM CDTSevere Thunderstorm WarningSHVUnion57 min
May 27, 8:58 PM CDTSevere Thunderstorm WarningSHVNacogdoches, Panola, Shelby62 min
May 27, 9:09 PM CDTSevere Thunderstorm WarningJANMorehouse36 min
May 27, 9:09 PM CDTSevere Thunderstorm WarningSHVBossier, Caddo51 min
May 27, 9:39 PM CDTSevere Thunderstorm WarningSHVDe Soto66 min
May 27, 9:45 PM CDTFlash Flood WarningSHVBossier, Caddo3 hr
May 27, 9:50 PM CDTSevere Thunderstorm WarningSHVClaiborne, Webster40 min

The nearest sounding before it

Shreveport, LA (KSHV), launched 00:00Z, 1.8 hours before the alert went out and 72 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 00:00Z on 2000-05-28Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 2595 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 00:00Z on 2000-05-28The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 35 square meters per square second.193958Sfc1 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
2595 J/kg
Mixed-layer CIN
-13 J/kg
Mixed-layer LCL
1336 m above ground
0-6 km bulk shear
25 kt
0-1 km storm-relative helicity
35 m²/s²
0-3 km storm-relative helicity
87 m²/s²
Significant tornado parameter
0.4
Supercell composite
4.7

Open this sounding in Storm Lab

The text

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

616 
WWUS9 KMKC 280128
SEL5  
MKC WW 280128
ARZ000-LAZ000-280600-

URGENT - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WATCH NUMBER 385
STORM PREDICTION CENTER NORMAN OK
828 PM CDT SAT MAY 27 2000

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

   SOUTHERN ARKANSAS                           
   NORTHERN LOUISIANA                          

EFFECTIVE THIS SATURDAY NIGHT AND SUNDAY MORNING FROM 845 PM UNTIL
100 AM CDT.

HAIL TO 2 INCHES IN DIAMETER...THUNDERSTORM WIND GUSTS TO 70
MPH...AND DANGEROUS LIGHTNING ARE POSSIBLE IN THESE AREAS.

THE SEVERE THUNDERSTORM WATCH AREA IS ALONG AND 75 STATUTE MILES
EAST AND WEST OF A LINE FROM 50 MILES SOUTHEAST OF SHREVEPORT
LOUISIANA TO 75 MILES NORTH NORTHEAST OF EL DORADO 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...  CONTINUE...WW 379...WW 381...WW
382...WW 383...WW 384...

DISCUSSION...THUNDERSTORSM ARE EXPECTED TO CONTINUE DEVELOPING OVER
NRN LA AND SRN AR AS CONVECTIVE COMPLEX OVER NERN TX MOVES EWD AND
INTERSECTS OUTFLOW BOUNDARY OVER NRN LA.  SHV SOUNDING SHOWS STRONG
INSTABILITY WITH MUCAPE AROUND 3500 J/KG.  SUFFICIENT SHEAR IS
ASSOCIATED WITH SRN END OF UPPER TROUGH TO ENHANCE SEVERE THREAT.


AVIATION...A FEW SEVERE THUNDERSTORMS WITH HAIL SURFACE AND ALOFT
TO 2 INCHES.  EXTREME TURBULENCE AND SURFACE WIND GUSTS TO 60
KNOTS.  A FEW CUMULONIMBI WITH MAXIMUM TOPS TO 500.  MEAN STORM
MOTION VECTOR 26025.


...WEISS

315,0943 340,0932 340,0904 315,0915

Nearby

Severe Thunderstorm Watches in Arkansas, 2000Severe Thunderstorm Watches in Louisiana, 2000Severe Thunderstorm Watches in Texas, 2000Every 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.