Alert archive / Oklahoma / Severe Thunderstorm Warnings in 1990
Severe Thunderstorm Warning 41, NWS Norman, OK
NWS Norman, OK issued this severe thunderstorm warning at Mar 13, 1990, 6:45 PM CST for Cotton County, Stephens County, Oklahoma. It was in force for 60 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, 6:45 PM CST (00:45 UTC)
- Expired
- Mar 13, 1990, 7:45 PM CST
- In force
- 60 min
- Issued by
- NWS Norman, OK
- Area
- Whole counties
Counties Cotton County, OK, Stephens 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 13, 6:57 PM CST | Tornado F1 | Stephens, OK | |
| Mar 13, 7:00 PM CST | Tornado F3 | Stephens, 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, 0.8 hours before the alert went out and 113 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.
- Mixed-layer CAPE
- 1624 J/kg
- Mixed-layer CIN
- -9 J/kg
- Mixed-layer LCL
- 695 m above ground
- 0-6 km bulk shear
- 39 kt
- 0-1 km storm-relative helicity
- 115 m²/s²
- 0-3 km storm-relative helicity
- 128 m²/s²
- Significant tornado parameter
- 0.8
- Supercell composite
- 4.7
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
Special weather statement, Mar 13, 2:05 PM CST, 4 hours 40 minutes before
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE WICHITA FALLS TX 200 PM CST TUE MAR 13 1990 AT 155 PM CST THE WICHITA FALLS RADAR SHOWED VERY STRONG THUNDER STORMS DEVELOPING RAPIDLY OVER WESTERN WICHITA AND CENTRAL WILBARGER COUNTIES. THE STRONGEST STORMS WERE LOCATED SOUTH OF ELECTRA AND TO THE SOUTH WEST OF OKLAUNION. THESE STORMS ARE INTENSIFYING RAPIDLY. THESE STORMS ARE PRODUCING VERY HEAVY RAINS AND ARE ALSO CAPABLE OF PRODUCING STRONGh WINDS...DANGEROUS LIGHTNING AND HAIL. MOVEMENT WAS TO THE NORTHEAST AT 35 MPH. STAY TUNED FOR LATER STATEMENTS AND POSSIBLE WARNINGS.
Special weather statement, Mar 13, 2:33 PM CST, 4 hours 12 minutes before
OKZALL-132200- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE OKLAHOMA CITY OK 230 PM CST TUE MAR 13 1990 ...TORNADO WATCH CENTRAL AND WESTERN OKLAHOMA UNTIL 9 PM... AT 230 PM STRONG THUNDERSTORMS WERE LOCATED OVER SOUTHWEST OKLAHOMA NEAR FREDERICK AND WEST OF WALTERS. THESE STORMS DEVELOPED EXPLOSIVELY DURING THE PAST 30 MINUTES AND WERE MOVING NORTHEAST AT 35 MPH. THE ATMOSPHERE ACROSS WESTERN AND CENTRAL OKLAHOMA IS EXTREMELY UNSTABLE AND THE POTENTIAL EXIST FOR THE RAPID DEVELOPMENT OF SEVERE THUNDERSTORMS THROUGH THE EVENING. THE WIND STRUCTURE OF THE ATMOSPHERE IS ALSO FAVORABLE FOR TORNADO DEVELOPMENT WITH A FEW OF THE SEVERE STORMS. PERSONS OVER WESTERN AND CENTRAL OKLAHOMA SHOULD REMAIN ALERT TO RAPIDLY CHANGING WEATHER CONDITIONS THIS AFTERNOON AND EVENING AND BE ALERT FOR LATER STATEMENTS AND WARNINGS FROM THE NATINAL WEATHER SERVICE.
Special weather statement, Mar 13, 2:34 PM CST, 4 hours 11 minutes before
TXZ019-20-132130- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE WICHITA FALLS TX 225 PM CST TUE MAR 13 1990 ...TORNADO WATCH FOR WICHITA AND THE SURROUNDING COUNTIES UNTIL 9PM CST THIS TUESDAY AFTERNOON AND EVENING. AT 220 PM CST THUNDERSTORMS WERE RADIDLY DEVELOPING AND INCREASING IN INTENSITY ACROSS WESTERN WICHITA AND WILBARGER COUNTIES. THE STRONGEST THUNDERSTORMS WERE WEST OF BURKBURNETT AND NEAR VERNON. MOVEMENT WAS NORTHEAST AT 35 MPH. A TORNADO WATCH MEANS THAT CONDITIONS ARE FAVORABLE FOR TORNADOES TO DEVELOP IN AND CLOSE TO THE WATCH AREA. DAMAGING WIND..LARGE HAIL..VERY HEAVY RAIN AND DEADLY LIGHTNING ARE POSSIBLE WITH THE HEAVIER THUNDER- STORMS. BE ALERT TO CHANGING WEATHER CONDITIONS AND BE PREPARED TO TAKE SHELTER IMMEDIATELY IF A WARNING IS ISSUED OR SEVERE WEATHER IS SIGHTED.
Special weather statement, Mar 13, 3:20 PM CST, 3 hours 25 minutes before
TXZ019-20-132230- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE WICHITA FALLS TX 320 PM CST TUE MAR 13 1990 ...TORNADO WATCH FOR WICHITA AND THE SURROUNDING COUNTIES UNTIL 9PM CST THIS TUESDAY AFTERNOON AND EVENING. AT 320 PM CST A THUNDERSTORM HAD DEVELOPED SOUTHWEST OF LAKE KICKAPOO... NEAR MEGARGEL. THIS STORM WAS BUILDING RAPIDLY AND MAY CONTAIN SOME HAIL STRONG WINDS ALONG WITH VERY HEAVY RAINS. MOVEMENT WAS NORTHEAST AT 35 MILES AN HOUR. OTHER THUNDERSTORMS...SOME SEVERE WERE IN OKLAHOMA SOUTH OF LAWTON AND NORTHEAST OF FREDERICK. MOVEMENT WAS NORTHEAST AT 30 MILES AN HOUR. A TORNADO WATCH MEANS THAT CONDITIONS ARE FAVORABLE FOR TORNADOES TO DEVELOP IN AND CLOSE TO THE WATCH AREA. DAMAGING WIND..LARGE HAIL..VERY HEAVY RAIN AND DEADLY LIGHTNING ARE POSSIBLE WITH THE HEAVIER THUNDER- STORMS.
Local storm report, Mar 13, 6:38 PM CST, 7 minutes before
STORM REPORT NATIONAL WEATHER SERVICE OKLAHOMA CITY OK 1020 AM CST TUE MAR 13 1990 ...STORM REPORTS FOR THE AFTERNOON OF MARCH 13TH... TIME(CST) COUNTY EVENT 238 PM TILLMAN NICKEL SIZE HAIL IN GRANDFIELD 240 PM TILLMAN 3/4 INCH HAIL 5 WEST OF FREDERICK 312 PM COMANCHE 1 1/2 INCH HAIL NEAR GERONIMO 322 PM COMANCHE NICKEL SIZE HAIL 2 NORTH OF LAWTON 347 PM CANADIAN QUARTER SIZE HAIL 8 SOUTHWEST OF YUKON 351 PM COMANCHE QUARTER SIZE HAIL AT FLETCHER 358 PM GRADY QUARTER SIZE HAIL 5 WEST OF RUSH SPRINGS 404 PM GRADY DIME SIZE HAIL 3 SOUTHWEST OF RUSH SPRINGS 408 PM GRADY QUARTER SI4ZE HAIL IN RUSH SPRINGS 410 PM GRADY 60 MPH WINDS 2 SOUTH OF RUSH SPRINGS 416 PM GRADY GOLFBALL SIZE HAIL 4 NORTH OF RUSH SPRINGS
Local storm report, Mar 13, 6:39 PM CST, 6 minutes before
STORM REPORT...CORRECT ISSUE TIME NATIONAL WEATHER SERVICE OKLAHOMA CITY OK 639 PM CST TUE MAR 13 1990 ...STORM REPORTS FOR THE AFTERNOON OF MARCH 13TH... TIME(CST) COUNTY EVENT 238 PM TILLMAN NICKEL SIZE HAIL IN GRANDFIELD 240 PM TILLMAN 3/4 INCH HAIL 5 WEST OF FREDERICK 312 PM COMANCHE 1 1/2 INCH HAIL NEAR GERONIMO 322 PM COMANCHE NICKEL SIZE HAIL 2 NORTH OF LAWTON 347 PM CANADIAN QUARTER SIZE HAIL 8 SOUTHWEST OF YUKON 351 PM COMANCHE QUARTER SIZE HAIL AT FLETCHER 358 PM GRADY QUARTER SIZE HAIL 5 WEST OF RUSH SPRINGS 404 PM GRADY DIME SIZE HAIL 3 SOUTHWEST OF RUSH SPRINGS 408 PM G7RADY QUARTER SIZE HAIL IN RUSH SPRINGS 410 PM GRADY 60 MPH WINDS 2 SOUTH OF RUSH SPRINGS 416 PM GRADY GOLFBALL SIZE HAIL 4 NORTH OF RUSH SPRINGS
The office that day
Everything else NWS Norman, OK issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Mar 13, 6:01 PM CST | Tornado Warning | OUN | Jefferson, Stephens | 29 min |
| Mar 13, 6:23 PM CST | Tornado Warning | OUN | Lincoln, Pottawatomie | 37 min |
| Mar 13, 6:26 PM CST | Tornado Warning | OUN | Jefferson, Stephens | 34 min |
| Mar 13, 6:57 PM CST | Tornado Warning | OUN | Jefferson, Stephens | 33 min |
| Mar 13, 7:04 PM CST | Severe Thunderstorm Warning | OUN | Pottawatomie, Seminole | 41 min |
| Mar 13, 7:04 PM CST | Severe Thunderstorm Warning | OUN | Lincoln | 41 min |
| Mar 13, 7:10 PM CST | Severe Thunderstorm Warning | OUN | Carter, Garvin, Murray | 65 min |
| Mar 13, 7:18 PM CST | Severe Thunderstorm Warning | OUN | Lincoln, Oklahoma | 57 min |
| Mar 13, 7:31 PM CST | Tornado Warning | OUN | Carter | 29 min |
| Mar 13, 7:34 PM CST | Severe Thunderstorm Warning | OUN | Comanche, Cotton, Stephens | 56 min |
| Mar 13, 7:52 PM CST | Tornado Warning | OUN | Garvin | 38 min |
| Mar 13, 8:18 PM CST | Tornado Warning | OUN | Garvin | 42 min |
| Mar 13, 8:42 PM CST | Tornado Warning | OUN | Garvin, McClain | 48 min |
| Mar 13, 8:42 PM CST | Tornado Warning | OUN | Pottawatomie | 48 min |
| Mar 13, 8:53 PM CST | Severe Thunderstorm Warning | OUN | Jackson, Kiowa, Tillman | 67 min |
| Mar 13, 9:20 PM CST | Severe Thunderstorm Warning | OUN | Pontotoc, Pottawatomie, Seminole | 55 min |
| Mar 13, 9:36 PM CST | Severe Thunderstorm Warning | OUN | Caddo, Kiowa, Washita | 69 min |
| Mar 13, 9:48 PM CST | Severe Thunderstorm Warning | OUN | Hughes | 57 min |
| Mar 13, 10:26 PM CST | Severe Thunderstorm Warning | OUN | Blaine, Garfield, Kingfisher, Major | 64 min |
| Mar 13, 10:26 PM CST | Severe Thunderstorm Warning | OUN | Custer | 64 min |
| Mar 13, 10:26 PM CST | Severe Thunderstorm Warning | OUN | Grant | 64 min |
| Mar 13, 11:43 PM CST | Severe Thunderstorm Warning | OUN | Garfield, Noble | 47 min |
| Mar 14, 12:52 AM CST | Severe Thunderstorm Warning | OUN | Jackson | 53 min |
| Mar 14, 1:38 AM CST | Severe Thunderstorm Warning | OUN | Logan | 37 min |
| Mar 14, 2:00 AM CST | Severe Thunderstorm Warning | OUN | Payne | 30 min |
| Mar 14, 2:34 AM CST | Severe Thunderstorm Warning | OUN | Canadian, Grady | 26 min |
| Mar 14, 4:50 AM CST | Severe Thunderstorm Warning | OUN | Coal, Pontotoc | 35 min |
Nearby
Severe Thunderstorm Warnings in Oklahoma, 1990Every 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.