Alert archive / Arkansas / Severe Thunderstorm Warnings in 1991

Severe Thunderstorm Warning 85, NWS Tulsa, OK

April 28, 1991Franklin County, Logan County, Arkansas

NWS Tulsa, OK issued this severe thunderstorm warning at Apr 28, 1991, 5:30 PM CDT for Franklin County, Logan County, Arkansas. It was in force for 60 min.

The area

The counties it named.

The facts

Issued
Apr 28, 1991, 5:30 PM CDT (22:30 UTC)
Expired
Apr 28, 1991, 6:30 PM CDT
In force
60 min
Issued by
NWS Tulsa, OK
Area
Whole counties

Counties Franklin County, AR, Logan County, AR

The nearest sounding before it

Norman, OK (KOUN), launched 12:00Z, 10.5 hours before the alert went out and 327 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 1991-04-28Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 40 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 1991-04-28The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 201 square meters per square second.1939587897117136Sfc1 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
40 J/kg
Mixed-layer CIN
-277 J/kg
Mixed-layer LCL
1298 m above ground
0-6 km bulk shear
74 kt
0-1 km storm-relative helicity
201 m²/s²
0-3 km storm-relative helicity
284 m²/s²
Significant tornado parameter
0.0
Supercell composite
2.6

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.

The office that day

Everything else NWS Tulsa, OK issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Apr 28, 3:13 PM CDTSevere Thunderstorm WarningTSAMcIntosh, Pittsburg62 min
Apr 28, 3:26 PM CDTSevere Thunderstorm WarningTSAOkfuskee, Okmulgee64 min
Apr 28, 5:21 PM CDTSevere Thunderstorm WarningTSADelaware39 min

Nearby

Severe Thunderstorm Warnings in Arkansas, 1991Every severe thunderstorm warning in 1991

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.