Alert archive / Arkansas / Severe Thunderstorm Warnings in 1989

Severe Thunderstorm Warning 78, NWS Tulsa, OK

May 18, 1989Crawford County, Arkansas

NWS Tulsa, OK issued this severe thunderstorm warning at May 18, 1989, 10:58 PM CDT for Crawford County, Arkansas. It was in force for 62 min.

The area

The counties it named.

The facts

Issued
May 18, 1989, 10:58 PM CDT (03:58 UTC)
Expired
May 19, 1989, 12:00 AM CDT
In force
62 min
Issued by
NWS Tulsa, OK
Area
Whole counties

County Crawford 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

Springfield, MO (KUMN), launched 00:00Z, 4.0 hours before the alert went out and 151 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, Springfield, MO at 00:00Z on 1989-05-19Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 555 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, Springfield, MO at 00:00Z on 1989-05-19The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 176 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
555 J/kg
Mixed-layer CIN
-29 J/kg
Mixed-layer LCL
1162 m above ground
0-6 km bulk shear
42 kt
0-1 km storm-relative helicity
176 m²/s²
0-3 km storm-relative helicity
181 m²/s²
Significant tornado parameter
0.3
Supercell composite
3.7

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.

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.

In the hours before

Local storm report, May 18, 9:08 PM CDT, 1 hour 50 minutes before
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The office that day

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

IssuedProductOfficeCountiesLasted
May 18, 10:58 PM CDTSevere Thunderstorm WarningTSALeFlore, Sequoyah62 min
May 18, 7:23 PM CDTTornado WarningTSAPolk52 min
May 18, 7:44 PM CDTSevere Thunderstorm WarningTSAFranklin, Johnson, Logan61 min
May 18, 8:16 PM CDTSevere Thunderstorm WarningTSAPolk44 min
May 18, 8:45 PM CDTSevere Thunderstorm WarningTSAJohnson60 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.