Alert archive / Oklahoma / Severe Thunderstorm Warnings in 1990

Severe Thunderstorm Warning 46, NWS Tulsa, OK

April 16, 1990Pawnee County, Oklahoma

NWS Tulsa, OK issued this severe thunderstorm warning at Apr 16, 1990, 9:48 PM CDT for Pawnee County, Oklahoma. It was in force for 57 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: Apr 16, 1990, 9:48 PM CDT (02:48 UTC)
Expired: Apr 16, 1990, 10:45 PM CDT
In force: 57 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

Time	Report	Where	Remark
Apr 16, 10:00 PM CDT	Hail 0.75	Pawnee, 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, 2.8 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-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

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: 2818 J/kg
Mixed-layer CIN: -28 J/kg
Mixed-layer LCL: 1378 m above ground
0-6 km bulk shear: 19 kt
0-1 km storm-relative helicity: 13 m²/s²
0-3 km storm-relative helicity: 60 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 170249
SVRTUL
OKC117-170345-
 
BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE TULSA OK
948 PM CDT MON APR 16 1990
 
THE NATIONAL WEATHER SERVICE IN TULSA HAS ISSUED A
SEVERE THUNDERSTORM WARNING EFFECTIVE UNTIL 1045 PM CDT
FOR PEOPLE IN THE FOLLOWING COUNTIES ...
 
IN NORTHEAST OKLAHOMA
 
   ...SOUTHERN PAWNEE COUNTY
 
AT 948 PM CDT RADAR INDICATED A SEVERE THUNDERSTORM 10 MILES SOUTHWEST
OF PAWNEE MOVING EAST AT 20 MPH.
 
 
SEVERE THUNDERSTORMS PRODUCE DAMAGING WIND IN EXCESS OF 60 MPH...
LARGE HAIL...DEADLY LIGHTNING AND VERY HEAVY RAIN.  FOR YOUR
PROTECTION MOVE TO AN INTERIOR ROOM ON THE LOWEST FLOOR OF YOUR
HOME OR BUSINESS.

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, Apr 16, 4:58 PM CDT, 4 hours 50 minutes before

STORM REPORT DELAYED
NATIONAL WEATHER SERVICE TULSA, OK
457 PM CDT MON APR 16 1990

DELAYED STORM REPORT FROM APRIL 15...

 TIME/CDT COUNTY      EVENT
 725 PM   LATIMER     DIME SIZE HAIL FELL 7 MILES NORTH OF WILBURTON
                      ON HIGHWAY 2.

The office that day

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

Issued	Product	Office	Counties	Lasted
Apr 16, 7:03 PM CDT	Severe Thunderstorm Warning	TSA	Mayes, Rogers	42 min
Apr 16, 7:22 PM CDT	Severe Thunderstorm Warning	TSA	Creek, Okfuskee	53 min
Apr 16, 7:37 PM CDT	Severe Thunderstorm Warning	TSA	Tulsa	68 min
Apr 16, 7:45 PM CDT	Severe Thunderstorm Warning	TSA	Nowata, Washington	60 min
Apr 16, 7:45 PM CDT	Severe Thunderstorm Warning	TSA	Osage	60 min
Apr 16, 7:58 PM CDT	Severe Thunderstorm Warning	TSA	LeFlore	62 min
Apr 16, 7:59 PM CDT	Severe Thunderstorm Warning	TSA	Mayes	61 min
Apr 16, 8:10 PM CDT	Severe Thunderstorm Warning	TSA	Pittsburg	65 min
Apr 16, 8:39 PM CDT	Severe Thunderstorm Warning	TSA	Creek, Tulsa	66 min
Apr 16, 8:50 PM CDT	Severe Thunderstorm Warning	TSA	Adair, Cherokee	55 min
Apr 16, 9:00 PM CDT	Severe Thunderstorm Warning	TSA	Sequoyah	60 min
Apr 16, 9:36 PM CDT	Severe Thunderstorm Warning	TSA	Wagoner	69 min
Apr 16, 9:43 PM CDT	Severe Thunderstorm Warning	TSA	Creek, Okmulgee, Tulsa	62 min
Apr 16, 10:02 PM CDT	Severe Thunderstorm Warning	TSA	Osage, Tulsa, Washington	58 min
Apr 16, 10:17 PM CDT	Severe Thunderstorm Warning	TSA	Cherokee	58 min
Apr 16, 10:21 PM CDT	Flash Flood Warning	TSA	Creek	3 hr
Apr 16, 10:43 PM CDT	Severe Thunderstorm Warning	TSA	Okmulgee	62 min

Nearby

Severe Thunderstorm Warnings in Oklahoma, 1990 Every severe thunderstorm warning in 1990

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.