Alert archive / Arkansas / Severe Thunderstorm Warnings in 1989

Severe Thunderstorm Warning 75, NWS Tulsa, OK

May 18, 1989Polk County, Arkansas

NWS Tulsa, OK issued this severe thunderstorm warning at May 18, 1989, 8:16 PM CDT for Polk County, Arkansas. It was in force for 44 min.

The area

The counties it named.

The facts

Issued
May 18, 1989, 8:16 PM CDT (01:16 UTC)
Expired
May 18, 1989, 9:00 PM CDT
In force
44 min
Issued by
NWS Tulsa, OK
Area
Whole counties

County Polk 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

Longview/Gregg, TX (KGGG), launched 00:00Z, 1.3 hours before the alert went out and 240 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, Longview/Gregg, TX at 00:00Z on 1989-05-19Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 280 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, Longview/Gregg, TX at 00:00Z on 1989-05-19The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 131 square meters per square second.1939587897Sfc1 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
280 J/kg
Mixed-layer CIN
-174 J/kg
Mixed-layer LCL
1227 m above ground
0-6 km bulk shear
51 kt
0-1 km storm-relative helicity
131 m²/s²
0-3 km storm-relative helicity
158 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.4

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 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, 8:45 PM CDTSevere Thunderstorm WarningTSAJohnson60 min
May 18, 10:58 PM CDTSevere Thunderstorm WarningTSACrawford62 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.