Alert archive / Oklahoma / Tornado Warnings in 1999
Tornado Warning 74, NWS Tulsa, OK
NWS Tulsa, OK issued this tornado warning at May 22, 1999, 3:27 PM CDT for Osage County, Oklahoma. It was in force for 33 min. No storm report in the archive falls inside the area while it was in force.
The area
The outline the Iowa Environmental Mesonet reconstructed for it; the warning itself named whole counties.
The facts
- Issued
- May 22, 1999, 3:27 PM CDT (20:27 UTC)
- Expired
- May 22, 1999, 4:00 PM CDT
- In force
- 33 min
- Issued by
- NWS Tulsa, OK
- Area
- Whole counties; the outline is the Mesonet’s reconstruction
County Osage County, OK
The radar
The Tulsa radar (KINX), 76 km from the middle of the area, began a volume at 20:29 UTC, the scan nearest the moment this went out.
Open the radar archive at this moment
The archived warnings, watches and discussions in force at that minute are drawn over the scan, this one among them.
The nearest sounding before it
Norman, OK (KOUN), launched 12:00Z, 8.5 hours before the alert went out and 178 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
- 1999 J/kg
- Mixed-layer CIN
- -57 J/kg
- Mixed-layer LCL
- 912 m above ground
- 0-6 km bulk shear
- 13 kt
- 0-1 km storm-relative helicity
- 78 m²/s²
- 0-3 km storm-relative helicity
- 96 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
999 WFUS54 KTSA 222029 RRA TORTUL OKC113-222100- BULLETIN - EAS ACTIVATION REQUESTED TORNADO WARNING NATIONAL WEATHER SERVICE TULSA OK 327 PM CDT SAT MAY 22 1999 THE NATIONAL WEATHER SERVICE IN TULSA HAS ISSUED A * TORNADO WARNING FOR OSAGE COUNTY IN NORTHEAST OKLAHOMA * UNTIL 400 PM CDT * AT 327 PM CDT...RADAR INDICATED A SEVERE THUNDERSTORM WITH STRONG ROTATION OVER WYNONA. MOVING EAST SOUTHEAST AT 10 MPH...THIS DANGEROUS STORM COULD PRODUCE A TORNADO AT ANY TIME. * SOME LOCATIONS NEAR THE PATH OF THIS STORM INCLUDE... BARNSDALL AND WYNONA STORM SPOTTERS REPORTED STRONG ROTATION AND A FUNNEL CLOUD IN THE WYNONA AREA. IN ADDITION TO THE THREAT OF A TORNADO...LARGE HAIL AND DAMAGING STRAIGHT LINE WINDS CAN BE EXPECTED WITH THIS STORM. GO TO A SAFE PLACE NOW LAT...LON 3665 9639 3648 9647 3636 9613 3657 9604
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.
NWS Tulsa, OK wrote its last area forecast discussion before this tornado warning went out at May 22, 2:35 PM CDT, 52 minutes earlier.
Area forecast discussion, May 22, 2:35 PM CDT, 52 minutes before
EASTERN OKLAHOMA/NORTHWEST ARKANSAS FORECAST DISCUSSION NATIONAL WEATHER SERVICE TULSA OK 235 PM CDT SAT MAY 22 1999 NO DISCUSSION WILL BE WRITTEN THIS AFTERNOON DUE TO SEVERE WEATHER. FCSTID = 11 .TUL... AR...NONE. OK...NONE.
In the hours before
Special weather statement, May 22, 1:00 PM CDT, 2 hours 27 minutes before
ARZ001-002-010-011-019-020-029-OKZ049-053>076-231100- EASTERN OKLAHOMA/NORTHWEST ARKANSAS HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE TULSA OK 100 PM CDT SAT MAY 22 1999 A FEW SEVERE THUNDERSTORMS ARE EXPECTED AFTER MIDNIGHT TONIGHT IN NORTHEAST OKLAHOMA AND NORTHWEST ARKANSAS WITH THE THREAT REACHING PARTS OF SOUTHEAST OKLAHOMA AND WEST CENTRAL ARKANSAS NEAR DAYBREAK SUNDAY. THROUGH 6 AM SUNDAY...THE SEVERE WEATHER THREAT IS EXPECTED TO BE CONFINED TO AREAS ALONG AND NORTH OF INTERSTATE 40. .SYNOPSIS... A COMPLEX OF THUNDERSTORMS IN KANSAS EARLY THIS MORNING DISSIPATED. HOWEVER...IT HAS LEFT AN OUTFLOW BOUNDARY WHICH EXTENDED INTO EXTREME NORTH CENTRAL OKLAHOMA. A COLD FRONT WILL MOVE SOUTHWARD INTO KANSAS TONIGHT BUT WILL REMAIN NORTH OF THE AREA UNTIL SUNDAY. .DISCUSSION... A FEW ISOLATED THUNDERSTORMS HAVE DEVELOPED IN THE VICINITY OF THE OUTFLOW BOUNDARY EARLY THIS AFTERNOON. ISOLATED THUNDERSTORMS MAY PULSE TO SEVERE LIMITS...BUT NO ORGANIZED SEVERE WEATHER IS EXPECTED IN THE EXTREME NORTHWESTERN PORTIONS OF NORTHEAST OKLAHOMA. MOST AREAS WILL REMAIN RAIN-FREE THROUGH THIS EVENING. SEVERE THUNDERSTORMS ARE EXPECTED TO DEVELOP ALONG THE COLD FRONT IN SOUTHERN NEBRASKA LATE THIS AFTERNOON. THESE STORMS ARE EXPECTED TO ORGANIZE INTO A MESOSCALE CONVECTIVE SYSTEM THIS EVENING AND MOVE SOUTH SOUTHEAST ACROSS KANSAS INTO NORTHEAST OKLAHOMA AND FAR NORTHWEST ARKANSAS AFTER MIDNIGHT. THE STORMS WILL CONTINUE MOVING SOUTHEAST REACHING SOUTHEAST OKLAHOMA AND WEST CENTRAL ARKANSAS AROUND SUNRISE SUNDAY. A MODERATELY UNSTABLE AIRMASS WILL BE IN PLACE AHEAD OF THE STORMS ACROSS EASTERN OKLAHOMA AND NORTHWEST ARKANSAS. VERY FAVORABLE WIND PROFILES WILL ALLOW SOME OF THE STORMS TO REMAIN SEVERE THROUGH THE NIGHT INTO SUNDAY MORNING. DAMAGING WINDS WILL LIKELY BE THE MAIN SEVERE WEATHER THREAT ALTHOUGH THE AMOUNT OF INSTABILITY SUGGESTS THAT LARGE HAIL WILL ALSO BE POSSIBLE WITH A FEW OF THE STORMS. .EMERGENCY MANAGEMENT AGENCY AND SPOTTER ACTIVATION... EMERGENCY MANAGEMENT AGENCIES AND STORM SPOTTER GROUPS IN OSAGE COUNTY NEAR THE KANSAS BORDER SHOULD MONITOR THE PULSE THUNDERSTORMS THIS AFTERNOON. OTHERWISE...EMERGENCY MANAGEMENT AGENCIES AND STORM SPOTTER GROUPS IN EASTERN OKLAHOMA AND NORTHWEST ARKANSAS SHOULD MONITOR THE PROGRESS OF THE THUNDERSTORM COMPLEX AS IT MOVES SOUTH SOUTHEASTWARD THIS EVENING. ACTIVATION MAY WELL BE NECESSARY AFTER MIDNIGHT INTO SUNDAY MORNING.
Special weather statement, May 22, 1:00 PM CDT, 2 hours 27 minutes before
ARZ001-002-010-011-019-020-029-OKZ049-053>076-231100- EASTERN OKLAHOMA/NORTHWEST ARKANSAS HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE TULSA OK 100 PM CDT SAT MAY 22 1999 A FEW SEVERE THUNDERSTORMS ARE EXPECTED AFTER MIDNIGHT TONIGHT IN NORTHEAST OKLAHOMA AND NORTHWEST ARKANSAS WITH THE THREAT REACHING PARTS OF SOUTHEAST OKLAHOMA AND WEST CENTRAL ARKANSAS NEAR DAYBREAK SUNDAY. THROUGH 6 AM SUNDAY...THE SEVERE WEATHER THREAT IS EXPECTED TO BE CONFINED TO AREAS ALONG AND NORTH OF INTERSTATE 40. .SYNOPSIS... A COMPLEX OF THUNDERSTORMS IN KANSAS EARLY THIS MORNING DISSIPATED. HOWEVER...IT HAS LEFT AN OUTFLOW BOUNDARY WHICH EXTENDED INTO EXTREME NORTH CENTRAL OKLAHOMA. A COLD FRONT WILL MOVE SOUTHWARD INTO KANSAS TONIGHT BUT WILL REMAIN NORTH OF THE AREA UNTIL SUNDAY. .DISCUSSION... A FEW ISOLATED THUNDERSTORMS HAVE DEVELOPED IN THE VICINITY OF THE OUTFLOW BOUNDARY EARLY THIS AFTERNOON. ISOLATED THUNDERSTORMS MAY PULSE TO SEVERE LIMITS...BUT NO ORGANIZED SEVERE WEATHER IS EXPECTED IN THE EXTREME NORTHWESTERN PORTIONS OF NORTHEAST OKLAHOMA. MOST AREAS WILL REMAIN RAIN-FREE THROUGH THIS EVENING. SEVERE THUNDERSTORMS ARE EXPECTED TO DEVELOP ALONG THE COLD FRONT IN SOUTHERN NEBRASKA LATE THIS AFTERNOON. THESE STORMS ARE EXPECTED TO ORGANIZE INTO A MESOSCALE CONVECTIVE SYSTEM THIS EVENING AND MOVE SOUTH SOUTHEAST ACROSS KANSAS INTO NORTHEAST OKLAHOMA AND FAR NORTHWEST ARKANSAS AFTER MIDNIGHT. THE STORMS WILL CONTINUE MOVING SOUTHEAST REACHING SOUTHEAST OKLAHOMA AND WEST CENTRAL ARKANSAS AROUND SUNRISE SUNDAY. A MODERATELY UNSTABLE AIRMASS WILL BE IN PLACE AHEAD OF THE STORMS ACROSS EASTERN OKLAHOMA AND NORTHWEST ARKANSAS. VERY FAVORABLE WIND PROFILES WILL ALLOW SOME OF THE STORMS TO REMAIN SEVERE THROUGH THE NIGHT INTO SUNDAY MORNING. DAMAGING WINDS WILL LIKELY BE THE MAIN SEVERE WEATHER THREAT ALTHOUGH THE AMOUNT OF INSTABILITY SUGGESTS THAT LARGE HAIL WILL ALSO BE POSSIBLE WITH A FEW OF THE STORMS. .EMERGENCY MANAGEMENT AGENCY AND SPOTTER ACTIVATION... EMERGENCY MANAGEMENT AGENCIES AND STORM SPOTTER GROUPS IN OSAGE COUNTY NEAR THE KANSAS BORDER SHOULD MONITOR THE PULSE THUNDERSTORMS THIS AFTERNOON. OTHERWISE...EMERGENCY MANAGEMENT AGENCIES AND STORM SPOTTER GROUPS IN EASTERN OKLAHOMA AND NORTHWEST ARKANSAS SHOULD MONITOR THE PROGRESS OF THE THUNDERSTORM COMPLEX AS IT MOVES SOUTH SOUTHEASTWARD THIS EVENING. ACTIVATION MAY WELL BE NECESSARY AFTER MIDNIGHT INTO SUNDAY MORNING.
Local storm report, May 22, 3:23 PM CDT, 4 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE TULSA OK
323 PM CDT SAT MAY 22 1999
TIME(CDT) .....CITY LOCATION..... STATE ...EVENT/REMARKS...
....COUNTY LOCATION....
0215 PM 1 W SHIDLER OK 1 INCH HAIL
05/22/99 OSAGE
0221 PM DEWEY OK 1 INCH HAIL
05/22/99 WASHINGTON
0225 PM SHIDLER OK 2.5 INCH HAIL
05/22/99 OSAGE
0322 PM WYNONA OK 1.75 INCH HAIL
05/22/99 OSAGELocal storm report, May 22, 3:23 PM CDT, 4 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE TULSA OK
323 PM CDT SAT MAY 22 1999
TIME(CDT) .....CITY LOCATION..... STATE ...EVENT/REMARKS...
....COUNTY LOCATION....
0215 PM 1 W SHIDLER OK 1 INCH HAIL
05/22/99 OSAGE
0221 PM DEWEY OK 1 INCH HAIL
05/22/99 WASHINGTON
0225 PM SHIDLER OK 2.5 INCH HAIL
05/22/99 OSAGE
0322 PM WYNONA OK 1.75 INCH HAIL
05/22/99 OSAGEThe office that day
Everything else NWS Tulsa, OK issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| May 22, 1:53 PM CDT | Severe Thunderstorm Warning | TSA | Osage | 52 min |
| May 22, 2:06 PM CDT | Severe Thunderstorm Warning | TSA | Washington | 39 min |
| May 22, 2:39 PM CDT | Severe Thunderstorm Warning | TSA | Osage | 66 min |
| May 22, 3:00 PM CDT | Tornado Warning | TSA | Osage | 30 min |
| May 22, 3:22 PM CDT | Severe Thunderstorm Warning | TSA | Creek | 38 min |
| May 22, 3:24 PM CDT | Severe Thunderstorm Warning | TSA | Craig, Delaware | 51 min |
| May 22, 3:43 PM CDT | Severe Thunderstorm Warning | TSA | Tulsa | 47 min |
| May 22, 3:43 PM CDT | Severe Thunderstorm Warning | TSA | Adair | 62 min |
| May 22, 3:51 PM CDT | Severe Thunderstorm Warning | TSA | Creek | 54 min |
| May 22, 3:54 PM CDT | Severe Thunderstorm Warning | TSA | Pawnee | 51 min |
| May 22, 3:55 PM CDT | Severe Thunderstorm Warning | TSA | Osage | 50 min |
| May 22, 4:25 PM CDT | Severe Thunderstorm Warning | TSA | Tulsa | 50 min |
| May 22, 4:39 PM CDT | Severe Thunderstorm Warning | TSA | Adair | 66 min |
| May 22, 4:41 PM CDT | Severe Thunderstorm Warning | TSA | Osage | 49 min |
| May 22, 4:47 PM CDT | Severe Thunderstorm Warning | TSA | Pawnee | 43 min |
| May 22, 5:14 PM CDT | Severe Thunderstorm Warning | TSA | Tulsa | 46 min |
| May 22, 5:20 PM CDT | Severe Thunderstorm Warning | TSA | Osage, Washington | 40 min |
| May 22, 5:27 PM CDT | Severe Thunderstorm Warning | TSA | Pawnee | 48 min |
| May 22, 5:32 PM CDT | Severe Thunderstorm Warning | TSA | Rogers | 43 min |
| May 22, 5:52 PM CDT | Severe Thunderstorm Warning | TSA | Tulsa | 53 min |
| May 22, 5:55 PM CDT | Severe Thunderstorm Warning | TSA | Osage | 50 min |
| May 22, 6:01 PM CDT | Flash Flood Warning | TSA | Tulsa | 3 hr |
| May 22, 6:04 PM CDT | Severe Thunderstorm Warning | TSA | Creek | 41 min |
| May 22, 6:15 PM CDT | Severe Thunderstorm Warning | TSA | Delaware | 45 min |
| May 22, 6:33 PM CDT | Severe Thunderstorm Warning | TSA | Okmulgee | 42 min |
| May 22, 6:37 PM CDT | Severe Thunderstorm Warning | TSA | Cherokee, Mayes | 53 min |
| May 22, 6:44 PM CDT | Severe Thunderstorm Warning | TSA | Creek, Tulsa | 46 min |
Nearby
Tornado Warnings in Oklahoma, 1999Every tornado warning in 1999Tornadoes in 1999
Sources
The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.