Alert archive / Arkansas / Severe Thunderstorm Warnings in 1989

Severe Thunderstorm Warning 96, NWS Tulsa, OK

May 20, 1989Crawford County, Franklin County, Arkansas

NWS Tulsa, OK issued this severe thunderstorm warning at May 20, 1989, 5:34 AM CDT for Crawford County, Franklin County, Arkansas. It was in force for 56 min.

The area

The counties it named.

The facts

Issued
May 20, 1989, 5:34 AM CDT (10:34 UTC)
Expired
May 20, 1989, 6:30 AM CDT
In force
56 min
Issued by
NWS Tulsa, OK
Area
Whole counties

Counties Crawford County, AR, Franklin County, AR

The radar

The WSR-88D network and its archive begin in 1991, so there is no radar volume for this alert.

The nearest sounding before it

Norman, OK (KOUN), launched 00:00Z, 10.6 hours before the alert went out and 304 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 00:00Z on 1989-05-20Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1625 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 00:00Z on 1989-05-20The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 23 square meters per square second.19395878Sfc1 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
1625 J/kg
Mixed-layer CIN
-199 J/kg
Mixed-layer LCL
2005 m above ground
0-6 km bulk shear
42 kt
0-1 km storm-relative helicity
23 m²/s²
0-3 km storm-relative helicity
78 m²/s²
Significant tornado parameter
0.0
Supercell composite
2.8

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
May 20, 12:18 AM CDTSevere Thunderstorm WarningTSAMuskogee42 min
May 20, 12:55 AM CDTSevere Thunderstorm WarningTSAOkmulgee50 min
May 20, 1:09 AM CDTSevere Thunderstorm WarningTSAWagoner66 min
May 20, 1:28 AM CDTSevere Thunderstorm WarningTSAMuskogee47 min
May 20, 1:50 AM CDTSevere Thunderstorm WarningTSAOkmulgee55 min
May 20, 2:09 AM CDTTornado WarningTSAMuskogee, Okmulgee66 min
May 20, 2:20 AM CDTSevere Thunderstorm WarningTSAMayes, Rogers55 min
May 20, 2:50 AM CDTSevere Thunderstorm WarningTSAOkmulgee40 min
May 20, 3:01 AM CDTSevere Thunderstorm WarningTSAMuskogee59 min
May 20, 3:15 AM CDTFlash Flood WarningTSAMuskogee, Okmulgee3 hr
May 20, 3:35 AM CDTSevere Thunderstorm WarningTSAMcIntosh, Okmulgee55 min
May 20, 3:43 AM CDTSevere Thunderstorm WarningTSASequoyah62 min
May 20, 4:05 AM CDTSevere Thunderstorm WarningTSAAdair, Cherokee55 min
May 20, 4:26 AM CDTSevere Thunderstorm WarningTSACreek, Okmulgee64 min
May 20, 4:50 AM CDTSevere Thunderstorm WarningTSAMcIntosh55 min
May 20, 4:50 AM CDTSevere Thunderstorm WarningTSASequoyah55 min
May 20, 5:14 AM CDTSevere Thunderstorm WarningTSALeFlore61 min
May 20, 5:47 AM CDTSevere Thunderstorm WarningTSASequoyah28 min
May 20, 4:33 AM CDTSevere Thunderstorm WarningTSACrawford57 min
May 20, 4:58 AM CDTSevere Thunderstorm WarningTSASebastian62 min
May 20, 6:00 AM CDTSevere Thunderstorm WarningTSASebastian60 min

Nearby

Severe Thunderstorm Warnings in Arkansas, 1989Every severe thunderstorm warning in 1989

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.