Alert archive / Oklahoma / Severe Thunderstorm Warnings in 1990
Severe Thunderstorm Warning 224, NWS Tulsa, OK
NWS Tulsa, OK issued this severe thunderstorm warning at Nov 27, 1990, 7:18 AM CST for Rogers County, Oklahoma. It was in force for 42 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
- Nov 27, 1990, 7:18 AM CST (13:18 UTC)
- Expired
- Nov 27, 1990, 8:00 AM CST
- In force
- 42 min
- Issued by
- NWS Tulsa, OK
- Area
- Whole counties
County Rogers 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 |
|---|---|---|---|
| Nov 27, 7:30 AM CST | Hail 0.75 | Rogers, 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, 1.3 hours before the alert went out and 171 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
- 623 J/kg
- Mixed-layer CIN
- -4 J/kg
- Mixed-layer LCL
- 660 m above ground
- 0-6 km bulk shear
- 42 kt
- 0-1 km storm-relative helicity
- 267 m²/s²
- 0-3 km storm-relative helicity
- 277 m²/s²
- Significant tornado parameter
- 0.7
- Supercell composite
- 6.3
The text
As transmitted, in the capitals the NWS used until 2016.
000 TTAA00 KTUL 271318 SVRTUL OKC131-271400- BULLETIN - IMMEDIATE BROADCAST REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE TULSA OK 718 AM CST TUE NOV 27 1990 THE NATIONAL WEATHER SERVICE IN TULSA HAS ISSUED A SEVERE THUNDERSTORM WARNING EFFECTIVE UNTIL 800 AM CST FOR PEOPLE IN THE FOLLOWING COUNTIES ... IN NORTHEAST OKLAHOMA ...NORTHERN ROGERS COUNTY AT 715 AM RADAR INDICATED A SEVERE THUNDERSTORM 5 MILES NORTHWEST OF CLAREMORE. THIS STORM IS MOVING TOWARD THE NORTHEAST AT 35 MILES AN HOUR AND WILL LIKELY BE ACCOMPANIED BY LARGE HAIL AND DAMAGING WINDS. THE TOWN OF CHELSEA IS IN THE PATH OF THIS STORM. 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
Special weather statement, Nov 27, 5:00 AM CST, 2 hours 18 minutes before
OKZ007-008-012-013-018-271400- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE TULSA OK 458 AM CST TUE NOV 27 1990 ...BIG WEATHER CHANGES IN STORE FOR EASTERN OKLAHOMA TODAY... AFTER A VERY WARM AND DRY NOVEMBER...EASTERN OKLAHOMA WILL UNDERGO MAJOR WEATHER CHANGES TODAY. A STRONG COLD FRONT WILL PLUNGE SOUTHWARD FROM KANSAS THIS MORNING...AND WILL DROP TEMPERATURES 30 DEGREES IN A FEW HOURS. THIS COLD FRONT COMBINED WITH A POWERFUL UPPER LEVEL STORM SYSTEM WILL PRODUCE THUNDERSTORMS OVER MOST OF EASTERN OKLAHOMA TODAY... WITH THE POSSIBILITY SOME OF THESE STORMS BECOMING SEVERE. RESIDENTS OF EASTERN OKLAHOMA SHOULD NOT BE CAUGHT OFF GUARD BY THE WARM SPRING-LIKE WEATHER THIS MORNING. BY AFTERNOON...TEMPERATURES WILL LIKELY BE FALLING INTO THE 40S WITH A NORTH WIND OF 20 TO 30 MILES AN HOUR MAKING IT FEEL EVEN COLDER. THIS WILL ALSO BE THE COLDEST NIGHT OF THE FALL SEASON...WITH AN OVERNIGHT LOW IN TULSA EXPECTED AROUND 30. TEMPERATURES IN SOME OF THE OUT-LYING AREAS AND VALLEYS OF EASTERN OKLAHOMA WILL LIKELY FALL INTO THE 20S BY WEDNESDAY MORNING. A CHANCE THAT SEVERE THUNDERSTORMS MAY DEVELOP IS ALSO IN THE FORECAST TODAY...BUT THE MOST FAVORED AREAS FOR SEVERE WEATHER SEEMS TO BE NORTH AND EAST OF OKLAHOMA IN MISSOURI AND ILLINOIS. RESIDENTS SHOULD REMAIN ALERT TO THE POSSIBILITY OF STRONG STORMS TODAY. THESE STORMS WILL MOVE QUICKLY TO THE NORTHEAST AT 40 MILES AN HOUR ONCE THEY DEVELOP...AND WILL HAV E THE POTENTIAL TO PRODUCE DAMAGING WINDS AND SOME HAIL. SKIES WILL START TO CLEAR SLOWLY TONIGHT WITH THE COOL WEATHER REMAINING FOR SEVERAL DAYS BEFORE A SLOW WARMUP STARTS FRIDAY.
Local storm report, Nov 27, 6:34 AM CST, 44 minutes before
STORM REPORT
NATIONAL WEATHER SERVICE TULSA, OK
633 AM CST TUE NOV 27 1990
TIME/CDT COUNTY EVENT
600 AM CREEK 60 MPH WINDS REPORTED EAST OF STROUD IN
WESTERN CREEK CO. RELAYED FROM BRISTOW PD.Special weather statement, Nov 27, 6:56 AM CST, 22 minutes before
OKC037-105-113-131-143-147-271400- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE TULSA OK 656 AM CST TUE NOV 27 1990 ...STRONG THUNDERSTORMS MOVING INTO TULSA... AT 650 AM RADAR INDICATED A LINE OF THUNDERSTORMS WITH VERY HEAVY RAIN EXTENDING FROM JUST NORTH OF SAPULPA TO TULSA TO NOWATA. THE STRONGEST STORMS IN THIS LINE WERE LOCATED IN THE WESTERN SECTIONS OF THE CITY OF TULSA. AT 640 AM...SMALL HAIL WAS REPORTED AT SAND SPRINGS. THE THUNDERSTORMS WERE MOVING TOWARD THE NORTHEAST AT ABOUT 35 MILES AN HOUR. PEOPLE IN TULSA...ROGERS...AND NOWATA COUNTIES SHOULD KEEP ALERT FOR THE PASSAGE OF THESE STORMS...AND TAKE SHELTER IF THREATENING WEATHER APPROACHES.
The office that day
Everything else NWS Tulsa, OK issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Nov 27, 5:42 AM CST | Severe Thunderstorm Warning | TSA | Creek | 48 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.