Alert archive / Oklahoma / Severe Thunderstorm Warnings in 1989

Severe Thunderstorm Warning 41, NWS Tulsa, OK

May 8, 1989Sequoyah County, Oklahoma

NWS Tulsa, OK issued this severe thunderstorm warning at May 8, 1989, 10:06 PM CDT for Sequoyah County, Oklahoma. It was in force for 39 min.

The area

The counties it named.

The facts

Issued
May 8, 1989, 10:06 PM CDT (03:06 UTC)
Expired
May 8, 1989, 10:45 PM CDT
In force
39 min
Issued by
NWS Tulsa, OK
Area
Whole counties

County Sequoyah County, OK

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, 3.1 hours before the alert went out and 178 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 1989-05-09Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1380 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 1989-05-09The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 222 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
1380 J/kg
Mixed-layer CIN
-37 J/kg
Mixed-layer LCL
643 m above ground
0-6 km bulk shear
47 kt
0-1 km storm-relative helicity
222 m²/s²
0-3 km storm-relative helicity
212 m²/s²
Significant tornado parameter
1.5
Supercell composite
8.6

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.

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 8, 8:48 PM CDT, 1 hour 18 minutes before
STORM REPORT
NATIONAL WEATHER SERVICE TULSA, OK
848 PM CDT MON MAY 08 1989

TIME(CDT)   COUNTY        REPORT

2025 PM     ADAIR        NICKEL SIZE HAIL FELL AT WATTS.

The office that day

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

IssuedProductOfficeCountiesLasted
May 8, 8:14 PM CDTSevere Thunderstorm WarningTSAAdair31 min
May 8, 8:58 PM CDTSevere Thunderstorm WarningTSAAdair47 min
May 8, 10:11 PM CDTSevere Thunderstorm WarningTSAAdair49 min
May 8, 10:41 PM CDTSevere Thunderstorm WarningTSALeFlore64 min
May 8, 10:49 PM CDTSevere Thunderstorm WarningTSASequoyah56 min
May 8, 11:02 PM CDTSevere Thunderstorm WarningTSAAdair, Cherokee43 min
May 8, 11:45 PM CDTSevere Thunderstorm WarningTSALeFlore60 min
May 9, 1:48 AM CDTSevere Thunderstorm WarningTSAHaskell42 min
May 9, 2:05 AM CDTSevere Thunderstorm WarningTSAMuskogee40 min
May 9, 2:40 AM CDTSevere Thunderstorm WarningTSALeFlore65 min
May 9, 2:46 AM CDTSevere Thunderstorm WarningTSAMuskogee44 min
May 9, 3:30 AM CDTSevere Thunderstorm WarningTSALatimer45 min
May 9, 3:42 AM CDTSevere Thunderstorm WarningTSALeFlore63 min
May 9, 4:06 AM CDTSevere Thunderstorm WarningTSAHaskell, Muskogee54 min
May 8, 7:21 PM CDTSevere Thunderstorm WarningTSABenton54 min
May 8, 7:48 PM CDTSevere Thunderstorm WarningTSAWashington57 min
May 8, 8:43 PM CDTSevere Thunderstorm WarningTSACrawford, Washington62 min
May 8, 9:45 PM CDTSevere Thunderstorm WarningTSACrawford, Sebastian60 min
May 8, 10:17 PM CDTSevere Thunderstorm WarningTSAFranklin58 min
May 8, 10:49 PM CDTSevere Thunderstorm WarningTSALogan, Scott56 min
May 9, 3:53 AM CDTSevere Thunderstorm WarningTSAPolk67 min

Nearby

Severe Thunderstorm Warnings in Oklahoma, 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.