Alert archive / Oklahoma / Severe Thunderstorm Warnings in 1989

Severe Thunderstorm Warning 13, NWS Tulsa, OK

March 30, 1989Pawnee County, Oklahoma

NWS Tulsa, OK issued this severe thunderstorm warning at Mar 30, 1989, 4:40 AM CST for Pawnee County, Oklahoma. It was in force for 65 min. 1 report came from inside the area while it was in force.

The area

The counties it named, with what was reported inside it.

The facts

Issued
Mar 30, 1989, 4:40 AM CST (10:40 UTC)
Expired
Mar 30, 1989, 5:45 AM CST
In force
65 min
Issued by
NWS Tulsa, OK
Area
Whole counties

County Pawnee County, OK

The radar

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

What was reported inside it

TimeReportWhereRemark
Mar 30, 5:25 AM CSTHail 0.75Pawnee, OK

NCEI Storm Data entries that began inside the alert's area while it was in force. Before 2003 the local storm report archive is thin, so this is the record of what happened rather than what was phoned in. Storm Data before 1996 records only tornadoes, thunderstorm wind and hail.

The nearest sounding before it

Norman, OK (KOUN), launched 00:00Z, 10.7 hours before the alert went out and 137 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 1989-03-30Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 18 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 1989-03-30The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 0 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
18 J/kg
Mixed-layer CIN
-206 J/kg
Mixed-layer LCL
1740 m above ground
0-6 km bulk shear
34 kt
0-1 km storm-relative helicity
0 m²/s²
0-3 km storm-relative helicity
22 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

As transmitted, in the capitals the NWS used until 2016.

000 
TTAA00 KTUL 301042
SVRTUL
OKC117-301145-
 
BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE TULSA OK
440 AM CST THU MAR 30 1989
 
THE NATIONAL WEATHER SERVICE IN TULSA HAS ISSUED A
SEVERE THUNDERSTORM WARNING EFFECTIVE UNTIL  545 AM CST
FOR PEOPLE IN THE FOLLOWING COUNTY...
 
IN NORTHEAST OKLAHOMA
          ...SOUTHERN PAWNEE
 
AT 438 AM RADAR INDICATED A SEVERE THUNDERSTORM LOCATED 7 MILES WEST
OF MERAMAC MOVING TO THE EAST AT 30 MILES AN HOUR.
 
WITH THE PRESENT MOVEMENT AND SPEED OF THIS THUNDERSTORM...IT WILL
TRACK THROUGH MERAMAC...JENNINGS AND TERLTON IN THE NEXT HOUR.
 
SEVERE THUNDERSTORMS PRODUCE DAMAGING WIND IN EXCESS OF 60 MPH...
LARGE HAIL...DEADL3Y LIGHTNING AND VERY HEAVY RAIN.  FOR YOUR
PROTECTION MOVE TO AN INTERIOR ROOM ON THE LOWEST FLOOR OF YOUR
HOME OR BUSINESS.

The office that day

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

IssuedProductOfficeCountiesLasted
Mar 30, 9:35 AM CSTSevere Thunderstorm WarningTSAOkfuskee55 min
Mar 30, 9:52 AM CSTSevere Thunderstorm WarningTSAOkmulgee68 min
Mar 30, 10:38 AM CSTSevere Thunderstorm WarningTSAMuskogee67 min
Mar 30, 10:50 AM CSTSevere Thunderstorm WarningTSASequoyah28 min
Mar 30, 11:08 AM CSTSevere Thunderstorm WarningTSAAdair, Cherokee67 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; verification from NCEI's Storm Data; the sounding from the Mesonet's radiosonde archive.