Alert archive / Oklahoma / Severe Thunderstorm Warnings in 1990

Severe Thunderstorm Warning 9, NWS Tulsa, OK

March 13, 1990Delaware County, Ottawa County, Oklahoma

NWS Tulsa, OK issued this severe thunderstorm warning at Mar 13, 1990, 11:55 PM CST for Delaware County, Ottawa County, Oklahoma. It was in force for 65 min. 2 reports 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 13, 1990, 11:55 PM CST (05:55 UTC)
Expired: Mar 14, 1990, 1:00 AM CST
In force: 65 min
Issued by: NWS Tulsa, OK
Area: Whole counties

Counties Delaware County, OK, Ottawa 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
Mar 14, 12:30 AM CST	Thunderstorm Wind 0	Delaware, OK
Mar 14, 12:30 AM CST	Thunderstorm Wind 0	Ottawa, 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

Springfield, MO (KUMN), launched 00:00Z, 5.9 hours before the alert went out and 95 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: 610 J/kg
Mixed-layer CIN: -48 J/kg
Mixed-layer LCL: 729 m above ground
0-6 km bulk shear: 44 kt
0-1 km storm-relative helicity: 269 m²/s²
0-3 km storm-relative helicity: 319 m²/s²
Significant tornado parameter: 1.0
Supercell composite: 4.6

Open this sounding in Storm Lab

The text

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

000 
TTAA00 KTUL 140554
SVRTUL
OKC041-115-140700-
 
BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE TULSA OK
1155 PM CST TUE MAR 13 1990
 
THE NATIONAL WEATHER SERVICE IN TULSA HAS ISSUED A
SEVERE THUNDERSTORM WARNING EFFECTIVE UNTIL  100 AM CST
FOR PEOPLE IN THE FOLLOWING COUNTIES ...
 
IN NORTHEAST OKLAHOMA
 
   ...NORTHERN DELAWARE COUNTY...SOUTHERN OTTAWA COUNTY
 
AT 1154 PM RADAR INDICATED A SEVERE THUNDERSTORM JUST NORTHWEST OF
GROVE MOVING TO THE NORTHEAST AT 40 MPH.
 
 
A TORNADO WATCH IS ALSO IN EFFECT FOR THE WARNED AREA.  REMEMBER...
SEVERE THUNDERSTORMS CAN AND OCCASIONALLY DO PRODUCE TORNADOES
WITH LITTLE OR NO ADVANCE WARNING.  REMAIN CALM BUT BE ALERT TO
RAPIDLY CHANGING WEATHER CONDITIONS.

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, Mar 13, 11:42 PM CST, 13 minutes before

STORM REPORT
NATIONAL WEATHER SERVICE TULSA, OK
1142 PM CST TUE MAR 13 1990

TIME CST  COUNTY      EVENT

 730  PM  OKFUSKEE    GOLFBALL SIZE HAIL 6 MILES WEST PADEN.
 749  PM  OKFUSKEE    DIME SIZE HAIL AT PADEN.
 800  PM  CREEK       GOLFBALL SIZE HAIL AT SLICK.
 820  PM  OKFUSKEE    DIME SIZE HAIL ON HIGHWAY 48, 5 MILES
                      NORTHEAST OF BOLEY.
 820  PM  CREEK       DIME SIZE HAIL 5 MILES SOUTHEAST OF SLICK.
 825  PM  OKMULGEE    70 MPH WINDS DESTROYED ONE MOBILE HOME AND
                      DAMAGED ANOTHER IN NORTHWEST OKMULGEE COUNTY
                      BETWEEN HIGHWAYS 75 AND 75A.
 850  PM  TULSA       GOLFBALL SIZE HAIL AND 60 MPH ACROSS SOUTH
                   ^   TULSA AND GLENPOOL.
 907  PM  WAGONER     DIME SIZE HAIL 3 MILES NORTHEAST BROKEN ARROW.
 915  PM  OKMULGEE    DIME SIZE HAIL 10 MILE NORTH OF OKMULGEE.
 915  PM  ROGERS      QUARTER SIZE HAIL 5 MILES SOUTHEAST OF TIAWAH.

The office that day

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

Issued	Product	Office	Counties	Lasted
Mar 13, 7:15 PM CST	Severe Thunderstorm Warning	TSA	Creek, Okfuskee	60 min
Mar 13, 8:05 PM CST	Tornado Warning	TSA	Creek, Okmulgee	40 min
Mar 13, 8:17 PM CST	Severe Thunderstorm Warning	TSA	Okfuskee	58 min
Mar 13, 8:28 PM CST	Severe Thunderstorm Warning	TSA	Tulsa	62 min
Mar 13, 8:45 PM CST	Severe Thunderstorm Warning	TSA	Okmulgee, Wagoner	60 min
Mar 13, 8:55 PM CST	Severe Thunderstorm Warning	TSA	Rogers	65 min
Mar 13, 9:30 PM CST	Severe Thunderstorm Warning	TSA	Tulsa	45 min
Mar 13, 11:25 PM CST	Severe Thunderstorm Warning	TSA	Mayes	65 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.