Alert archive / Oklahoma / Severe Thunderstorm Warnings in 1989

Severe Thunderstorm Warning 101, NWS Tulsa, OK

May 21, 1989Craig County, Nowata County, Oklahoma

NWS Tulsa, OK issued this severe thunderstorm warning at May 21, 1989, 2:03 PM CDT for Craig County, Nowata County, Oklahoma. It was in force for 57 min. 4 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: May 21, 1989, 2:03 PM CDT (19:03 UTC)
Expired: May 21, 1989, 3:00 PM CDT
In force: 57 min
Issued by: NWS Tulsa, OK
Area: Whole counties

Counties Craig County, OK, Nowata 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
May 21, 2:10 PM CDT	Hail 2.5	Nowata, OK
May 21, 2:25 PM CDT	Hail 2.5	Nowata, OK
May 21, 2:50 PM CDT	Thunderstorm Wind 52	Craig, OK
May 21, 3:05 PM CDT	Thunderstorm Wind 52	Craig, 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 12:00Z, 7.1 hours before the alert went out and 144 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: 171 J/kg
Mixed-layer CIN: -167 J/kg
Mixed-layer LCL: 1091 m above ground
0-6 km bulk shear: 34 kt
0-1 km storm-relative helicity: 133 m²/s²
0-3 km storm-relative helicity: 164 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 4.3

Open this sounding in Storm Lab

The text

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

000 
TTAA00 KTUL 211904
SVRTUL
OKC035-105-212000-
 
BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE TULSA OK
203 PM CDT SUN MAY 21 1989
 
THE NATIONAL WEATHER SERVICE IN TULSA HAS ISSUED A
SEVERE THUNDERSTORM WARNING EFFECTIVE UNTIL  300 PM CDT
FOR PEOPLE IN THE FOLLOWING COUNTIES...
 
IN NORTHEAST OKLAHOMA
          ...CRAIG...NOWATA
 
AT 201 PM CDT RADAR INDICATED A SEVERE THUNDERSTORM JUST NORTHEAST OF
LENAPAH MOVING TOWARD THE SOUTHEAST AT 35 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.

The office that day

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

Issued	Product	Office	Counties	Lasted
May 21, 1:06 PM CDT	Severe Thunderstorm Warning	TSA	Craig	69 min
May 21, 1:06 PM CDT	Severe Thunderstorm Warning	TSA	Nowata, Washington	69 min
May 21, 2:31 PM CDT	Severe Thunderstorm Warning	TSA	Ottawa	59 min
May 21, 2:59 PM CDT	Severe Thunderstorm Warning	TSA	Craig, Delaware, Mayes	61 min
May 21, 5:52 PM CDT	Severe Thunderstorm Warning	TSA	Delaware	53 min

Nearby

Severe Thunderstorm Warnings in Oklahoma, 1989 Every 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.