Alert archive / Arkansas / Severe Thunderstorm Warnings in 1998

Severe Thunderstorm Warning 403, NWS Tulsa, OK

August 11, 1998Madison County, Arkansas

NWS Tulsa, OK issued this severe thunderstorm warning at Aug 11, 1998, 3:34 PM CDT for Madison County, Arkansas. It was in force for 41 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
Aug 11, 1998, 3:34 PM CDT (20:34 UTC)
Expired
Aug 11, 1998, 4:15 PM CDT
In force
41 min
Issued by
NWS Tulsa, OK
Area
Whole counties

County Madison County, AR

The nearest sounding before it

Norman, OK (KOUN), launched 12:00Z, 8.6 hours before the alert went out and 344 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, Norman, OK at 12:00Z on 1998-08-11Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 96 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, Norman, OK at 12:00Z on 1998-08-11The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 2 square meters per square second.1939Sfc1 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
96 J/kg
Mixed-layer CIN
-225 J/kg
Mixed-layer LCL
1281 m above ground
0-6 km bulk shear
19 kt
0-1 km storm-relative helicity
2 m²/s²
0-3 km storm-relative helicity
51 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 
TTAA00 KTUL 112035 RRA
SVRTUL
ARC087-112115-

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE TULSA OK
334 PM CDT TUE AUG 11 1998

THE NATIONAL WEATHER SERVICE IN TULSA HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...

  SOUTHERN MADISON COUNTY IN NORTHWESTERN ARKANSAS

* UNTIL 415 PM CDT

* AT 330 PM...RADAR DETECTED A SEVERE THUNDERSTORM 4 MILES SOUTH OF
  AURORA...MOVING SLOWLY SOUTH.

* SOME LOCATIONS AFFECTED INCLUDE..z.
  PETTIGREW

  HAIL TO THE SIZE OF NICKELS AND WIND GUSTS TO 60 MPH CAN BE
  EXPECTED IN THE WARNED AREA.

BE ALERT TO RAPIDLY CHANGING WEATHER CONDITIONS AS STORMS APPROACH.

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 Tulsa, OK wrote its last area forecast discussion before this severe thunderstorm warning went out at Aug 11, 10:50 AM CDT, 4 hours 44 minutes earlier.

Area forecast discussion, Aug 11, 10:50 AM CDT, 4 hours 44 minutes before
FPUS3 KTUL 111552
AFDTUL

EASTERN OKLAHOMA/NORTHWEST ARKANSAS FORECAST DISCUSSION
NATIONAL WEATHER SERVICE TULSA OK
1050 AM CDT TUE AUG 11 1998

UPDATED TO MAKE POPS MATCH CURRENT TRENDS.  RAIN PERSISTS IN THE
FAR SOUTHEAST BUT EXPECT IT TO GRADUALLY DISSIPATE LATE THIS
MORNING AND EARLY THIS AFTERNOON.  MODIFIED NORMAN SOUNDING QUITE
UNSTABLE WITH A WEAK CAP SO HAVE INCLUDED AT LEAST SLIGHT CHANCE
POPS FOR THE AFTERNOON HOURS EVERYWHERE.  TEMPS WILL DEPEND ON
CLOUDS.  WILL BE COOLEST IN THE SOUTHEAST BUT NORTHEAST OKLAHOMA
AND NORTHWEST ARKANSAS SHOULD WARM UP JUST FINE.

.TUL...
OK...NONE.
AR...NONE.

ABBAS

Nearby

Severe Thunderstorm Warnings in Arkansas, 1998Every severe thunderstorm warning in 1998

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.