Alert archive / Oklahoma / Tornado Warnings in 1991
Tornado Warning 12, NWS Tulsa, OK
NWS Tulsa, OK issued this tornado warning at Apr 27, 1991, 12:25 AM CDT for Craig County, Mayes County, Oklahoma. It was in force for 35 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
- Apr 27, 1991, 12:25 AM CDT (05:25 UTC)
- Expired
- Apr 27, 1991, 1:00 AM CDT
- In force
- 35 min
- Issued by
- NWS Tulsa, OK
- Area
- Whole counties
Counties Craig County, OK, Mayes County, OK
What was reported inside it
| Time | Report | Where | Remark |
|---|---|---|---|
| Apr 27, 12:35 AM CDT | Hail 0.88 | Mayes, OK | |
| Apr 27, 12:40 AM CDT | Hail 0.88 | 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
Norman, OK (KOUN), launched 00:00Z, 5.4 hours before the alert went out and 245 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
- 4072 J/kg
- Mixed-layer CIN
- -9 J/kg
- Mixed-layer LCL
- 954 m above ground
- 0-6 km bulk shear
- 46 kt
- 0-1 km storm-relative helicity
- 201 m²/s²
- 0-3 km storm-relative helicity
- 377 m²/s²
- Significant tornado parameter
- 7.9
- Supercell composite
- 34.1
The text
As transmitted, in the capitals the NWS used until 2016.
000 TTAA00 KTUL 270524 TORTUL OKC035-097-270600- BULLETIN - EBS ACTIVATION REQUESTED TORNADO WARNING NATIONAL WEATHER SERVICE TULSA OK 1225 AM CDT SAT APR 27 1991 THE NATIONAL WEATHER SERVICE IN TULSA HAS ISSUED A TORNADO WARNING EFFECTIVE UNTIL 100 AM CDT FOR PEOPLE IN THE FOLLOWING COUNTIES ... IN NORTHEAST OKLAHOMA ...SOUTHERN CRAIG COUNTY...NORTHERN MAYES COUNTY AT 12 25 AM THE TULSA WEATHER RADAR INDICATED A TORNADO JUST EAST OF FOYIL MOVING TO THE NORTHEAST AT 25 MPH. WATCH FOR SIGNS OF DEVELOPING STORMS. LARGE HAILSTONES AND UNUSUALLY LOW SWIRLING CLOUDS ARE MANY TIMES SEEN NEAR DEVELOPING TORNADOES. STRONG DAMAGING WINDS AND TORNADOES OFTEN PRODUCE A LOUD ROARING SOUND THAT CAN BE HEARD IN JTHE VICINITY OF STORMS. FREQUENT AND DANGEROUS LIGHTNING OCCURS WITH MOST SEVERE THUNDERSTORMS. KEEP TUNED TO THIS STATION FOR THE LATEST WEATHER BULLETINS.
What forecasters said that day
The local office's own words before this tornado 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, Apr 26, 6:35 PM CDT, 5 hours 50 minutes before
OKZ026-030-270030- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE TULSA OK 635 PM CDT FRI APR 26 1991 ...TORNADO WATCH REMAINS IN EFFECT FOR OSAGE...PAWNEE...AND CREEK COUNTIES UNTIL 900 PM.. AT 630 PM...AN AREA OF STRONG THUNDERSTORMS CONTINUE ACROSS NORTH CENTRAL OKLAHOMA. THE STRONGEST STORMS CONTINUE BETWEEN ENID AND PONCA CITY. HOWEVER...A NEW AREA OF STORMS HAS DEVELOPED TO THE EAST OVER OSAGE AND PAWNEE COUNTIES. ALTHOUGH THESE STORMS ARE NOT AS STRONG AS THE ONES TO THE WEST...THEY COULD INTENSIFY QUICKLY. PEOPLE IN OSAGE AND PAWNEE COUNTIES SHOULD REMAIN ALERT AND CONTINUE TO MONITOR NOAA WEATHER RADIO AND OTHER SOURCES FOR POSSIBLE WARNINGS AND FURTHER STATEMENTS.R
Local storm report, Apr 26, 8:10 PM CDT, 4 hours 15 minutes before
STORM REPORT
NATIONAL WEATHER SERVICE TULSA, OK
810 PM CDT FRI APR 26 1991
TIME(CDT) COUNTY REPORT
728 PM OSAGE GOLFBALL SIZE HAIL NEAR BURBANK
EXTENSIVE TREE DAMAGE EAST OF BURBANK
731 PM OSAGE WINDS ESTIMATED 80 MPH EAST OF BURBANK
BASEBALL SIZE HAIL EAST OF BURBANK
734 PM OSAGE TORNADO 5 MILES EAST OF BURBANK
755 PM PAWNEE HALF-DOLLAR SIZE HAIL AT SOUTH JENNINGS
800 PM PAWNEE BASEBALL SIZE HAIL NEAR HALLETTLocal storm report, Apr 26, 8:56 PM CDT, 3 hours 29 minutes before
STORM REPORT
NATIONAL WEATHER SERVICE TULSA, OK
848 PM CDT FRI APR 26 1991
ADDITIONAL STORM REPORTS RECEIVED BY NWS TUL SINCE 800 PM...
TIME(CDT) COUNTY REPORT
815 PM PAWNEE QUARTER SIZE HAIL AT CLEVELAND
815 PM PAWNEE FUNNEL CLOUD 3 ENE OF TERLTON. HAD
BRIEFLY TOUCHED DOWN.
830 PM PAWNEE TORNADO ON THE CIMMARON TURNPIKE AT
JCT OF HIGHWAY 48. VEHICLES TURNED
OVER ON TURNPIKE.Local storm report, Apr 26, 10:02 PM CDT, 2 hours 23 minutes before
STORM REPORT
NATIONAL WEATHER SERVICE TULSA, OK
1000 PM CDT FRI APR 26 1991
ADDITIONAL STORM REPORTS RECEIVED BY NWS TUL SINCE 845 PM...
TIME(CDT) COUNTY REPORT
930 PM TULSA 60 MPH WINDS INTERSCTN HWY 75 AND 20.
935 PM TULSA 70 MPH WINDS INTERSCTN HWY 75 AND 20.
935 PM TULSA TORNADO TOUCHED DOWN INTERSCTN HWY 75
AND 126TH ST N -- EAST OF SKIATOOK
948 PM TULSA TORNADO ON THE GROUND NEAR OOLOGAHLocal storm report, Apr 26, 11:33 PM CDT, 52 minutes before
STORM REPORT
NATIONAL WEATHER SERVICE TULSA, OK
1133 PM CDT FRI APR 26 1991
ADDITIONAL STORM REPORTS SINCE 830 PM WHICH HAVE NOT BEEN SENT BEFORE...
TIME(CDT) COUNTY REPORT
835 PM PAWNEE HWY 48 AND 64. HOUSES DAMAGED IN WESTPORT.
839 PM TULSA SPERRY. POWER LINES DOWN NEAR HWY 48.
840 PM PAWNEE WEST OF KEYSTONE DAM. HAM RADIO OPERATOR
REPORTED TORNADO OVER HOUSE.
851 PM PAWNEE HWY 48 AND CIMMARON TURNPIKE. EXTENSIVE
DAMAGE. CARS OFF THE ROAD.
857 PM TULSA SKIATOOK. DIME SIZE HAIL.
917 PM TULSA NEAR SKIATOOK. TORNADO.
920 PM WASHINGTON COPAN. AT LEAST 2 BUILDINGS DESTROYED.
ROADS BLOCKED. POSSIBLE TORNADO REPORTED.
925 PM OSAGE WEST OF SKIATOOK. PROPANE COMPANY DAMAGE.
DELAYED REPORT.
935 PM TULSA COLLINSVILLE. DEBRIS AND POWER LINES DOWN.
945 PM ROGERS OOLAGAH. POWER LINES DOWN.
951 PM WASHINGTON COPAN. HOUSES DESTROYED. PSBL FATALITY.The office that day
Everything else NWS Tulsa, OK issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Apr 26, 7:14 PM CDT | Tornado Warning | TSA | Osage | 61 min |
| Apr 26, 7:46 PM CDT | Tornado Warning | TSA | Pawnee | 59 min |
| Apr 26, 8:15 PM CDT | Severe Thunderstorm Warning | TSA | Osage | 60 min |
| Apr 26, 8:32 PM CDT | Tornado Warning | TSA | Osage | 58 min |
| Apr 26, 8:46 PM CDT | Severe Thunderstorm Warning | TSA | Washington | 44 min |
| Apr 26, 9:15 PM CDT | Tornado Warning | TSA | Tulsa, Washington | 60 min |
| Apr 26, 9:39 PM CDT | Severe Thunderstorm Warning | TSA | Nowata, Rogers | 66 min |
| Apr 26, 9:44 PM CDT | Tornado Warning | TSA | Rogers | 46 min |
| Apr 26, 10:16 PM CDT | Severe Thunderstorm Warning | TSA | Osage, Pawnee | 59 min |
| Apr 26, 10:36 PM CDT | Severe Thunderstorm Warning | TSA | Craig | 69 min |
| Apr 26, 10:49 PM CDT | Tornado Warning | TSA | Craig | 56 min |
| Apr 26, 11:03 PM CDT | Severe Thunderstorm Warning | TSA | Latimer | 57 min |
| Apr 26, 11:06 PM CDT | Severe Thunderstorm Warning | TSA | LeFlore | 69 min |
| Apr 26, 11:09 PM CDT | Tornado Warning | TSA | Ottawa | 51 min |
| Apr 26, 11:18 PM CDT | Severe Thunderstorm Warning | TSA | Creek, Osage, Tulsa, Washington | 57 min |
| Apr 26, 11:18 PM CDT | Severe Thunderstorm Warning | TSA | Nowata | 57 min |
| Apr 26, 11:38 PM CDT | Tornado Warning | TSA | LeFlore | 67 min |
| Apr 26, 11:49 PM CDT | Severe Thunderstorm Warning | TSA | Okfuskee | 41 min |
| Apr 26, 11:58 PM CDT | Severe Thunderstorm Warning | TSA | Rogers | 47 min |
Nearby
Tornado Warnings in Oklahoma, 1991Every tornado warning in 1991Tornadoes in 1991
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.