Alert archive / Oklahoma / Severe Thunderstorm Warnings in 1999
Severe Thunderstorm Warning 108, NWS Tulsa, OK
NWS Tulsa, OK issued this severe thunderstorm warning at Apr 22, 1999, 3:07 PM CDT for Osage County, Washington County, Oklahoma. It was in force for 38 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 22, 1999, 3:07 PM CDT (20:07 UTC)
- Expired
- Apr 22, 1999, 3:45 PM CDT
- In force
- 38 min
- Issued by
- NWS Tulsa, OK
- Area
- Whole counties; the outline is the Mesonet’s reconstruction
Counties Osage County, OK, Washington County, OK
What was reported inside it
| Time | Report | Where | Remark |
|---|---|---|---|
| Apr 22, 3:20 PM CDT | Thunderstorm Wind 52 | Bowring, OK | 60 mph winds at Wah-Sha-She State Park knocked down power lines. |
| Apr 22, 3:42 PM CDT | Thunderstorm Wind 52 | Copan, OK | There were two reports of strong winds from far northern Washington County. They were: 1) 60 mph gust at Copan and 2) tin was blown off of a barn roof 6 miles northeast of Dewey. |
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.
The nearest sounding before it
Springfield, MO (KSGF), launched 12:00Z, 8.1 hours before the alert went out and 211 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
- 0 J/kg
- Mixed-layer CIN
- No buoyant parcel
- Mixed-layer LCL
- 1444 m above ground
- 0-6 km bulk shear
- 40 kt
- 0-1 km storm-relative helicity
- 139 m²/s²
- 0-3 km storm-relative helicity
- 123 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
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.
NWS Tulsa, OK wrote its last area forecast discussion before this severe thunderstorm warning went out at Apr 22, 10:55 AM CDT, 4 hours 12 minutes earlier.
Area forecast discussion, Apr 22, 10:55 AM CDT, 4 hours 12 minutes before
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</html>In the hours before
Local storm report, Apr 22, 11:30 AM CDT, 3 hours 37 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE TULSA OK
1130 AM CDT THU APR 22 1999
TIME(CDT) .....CITY LOCATION..... STATE ...EVENT/REMARKS...
....COUNTY LOCATION....
0025 AM SAND SPGS OK 65 MPH TSTM GUST
04/22/99 OSAGE 65 MPH GUST ESTIMATED BY
NWS EMPLOYEE NEAR
GILCREASE MUSEUM
0110 AM BIG CABIN OK 60 MPH TSTM GUST
04/22/99 MAYES
0115 AM PRYOR OK WIND DAMAGE
04/22/99 MAYES SEVERAL LIMBS DOWN UP TO 2
INCHES IN DIAMETER.
0120 AM ADAIR OK WIND DAMAGE
04/22/99 MAYES MINOR ROOF DAMAGE.
SHINGLES BLOWN OFF ROOF.Local storm report, Apr 22, 11:30 AM CDT, 3 hours 37 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE TULSA OK
1130 AM CDT THU APR 22 1999
TIME(CDT) .....CITY LOCATION..... STATE ...EVENT/REMARKS...
....COUNTY LOCATION....
0025 AM SAND SPGS OK 65 MPH TSTM GUST
04/22/99 OSAGE 65 MPH GUST ESTIMATED BY
NWS EMPLOYEE NEAR
GILCREASE MUSEUM
0110 AM BIG CABIN OK 60 MPH TSTM GUST
04/22/99 MAYES
0115 AM PRYOR OK WIND DAMAGE
04/22/99 MAYES SEVERAL LIMBS DOWN UP TO 2
INCHES IN DIAMETER.
0120 AM ADAIR OK WIND DAMAGE
04/22/99 MAYES MINOR ROOF DAMAGE.
SHINGLES BLOWN OFF ROOF.Local storm report, Apr 22, 12:40 PM CDT, 2 hours 27 minutes before
PRELIMINARY LOCAL STORM REPORT...CORRECTED 2ND REPORT
NATIONAL WEATHER SERVICE TULSA OK
1240 PM CDT THU APR 22 1999
TIME(CDT) .....CITY LOCATION..... STATE ...EVENT/REMARKS...
....COUNTY LOCATION....
0025 AM SAND SPGS OK 65 MPH TSTM GUST
04/22/99 OSAGE 65 MPH GUST ESTIMATED BY
NWS EMPLOYEE NEAR
GILCREASE MUSEUM
0110 AM BIG CABIN OK 60 MPH TSTM GUST
04/22/99 CRAIG
0115 AM PRYOR OK WIND DAMAGE
04/22/99 MAYES SEVERAL LIMBS DOWN UP TO 2
INCHES IN DIAMETER.
0120 AM ADAIR OK WIND DAMAGE
04/22/99 MAYES MINOR ROOF DAMAGE.
SHINGLES BLOWN OFF ROOF.Local storm report, Apr 22, 12:40 PM CDT, 2 hours 27 minutes before
PRELIMINARY LOCAL STORM REPORT...CORRECTED 2ND REPORT
NATIONAL WEATHER SERVICE TULSA OK
1240 PM CDT THU APR 22 1999
TIME(CDT) .....CITY LOCATION..... STATE ...EVENT/REMARKS...
....COUNTY LOCATION....
0025 AM SAND SPGS OK 65 MPH TSTM GUST
04/22/99 OSAGE 65 MPH GUST ESTIMATED BY
NWS EMPLOYEE NEAR
GILCREASE MUSEUM
0110 AM BIG CABIN OK 60 MPH TSTM GUST
04/22/99 CRAIG
0115 AM PRYOR OK WIND DAMAGE
04/22/99 MAYES SEVERAL LIMBS DOWN UP TO 2
INCHES IN DIAMETER.
0120 AM ADAIR OK WIND DAMAGE
04/22/99 MAYES MINOR ROOF DAMAGE.
SHINGLES BLOWN OFF ROOF.Special weather statement, Apr 22, 1:00 PM CDT, 2 hours 7 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 THU APR 22 1999 A FEW SEVERE THUNDERSTORMS ARE POSSIBLE THIS AFTERNOON AND TONIGHT ACROSS PORTIONS OF NORTHEAST OKLAHOMA AND FAR NORTHWEST ARKANSAS. .SYNOPSIS... EARLY MORNING CONVECTION HAS CAUSED A LOW PRESSURE SYSTEM TO FORM OVER SOUTH CENTRAL KANSAS THIS MORNING. HOWEVER...THIS SYSTEM IS EXPECTED TO WEAKEN AS IT LIFTS NORTHEASTWARD ALONG A FRONTAL BOUNDARY WHICH EXTENDS FROM NORTHEAST KANSAS INTO THE TEXAS PANHANDLE. IN THE MEANTIME...A NEW LOW PRESSURE SYSTEM DEVELOPING OVER THE EASTERN TEXAS PANHANDLE WILL ALSO BEGIN A NORTHEASTWARD TREK ALONG THE SAME QUASI-STATIONARY BOUNDARY THIS AFTERNOON AND TONIGHT. THIS WILL DRAG A DRY LINE EXTENDING SOUTHWARD FROM THE LOW CLOSER TO EASTERN OKLAHOMA. .DISCUSSION... A FEW SEVERE THUNDERSTORMS WILL BE POSSIBLE NEAR THE FRONTAL BOUNDARY THROUGH TONIGHT. MOST OF THIS ACTIVITY WILL REMAIN NORTH AND WEST OF EASTERN OKLAHOMA THIS AFTERNOON. HOWEVER...AS THE SECOND LOW PRESSURE SYSTEM LIFTS INTO KANSAS THIS EVENING...THE FRONTAL BOUNDARY WILL MOVE SOUTHEASTWARD INTO NORTHEAST OKLAHOMA TONIGHT. THUNDERSTORM DEVELOPMENT WILL BE INHIBITED BY A CAPPING LAYER OF WARM AIR ALOFT OVER MOST OF EASTERN OKLAHOMA AND NORTHWEST ARKANSAS THIS AFTERNOON. HOWEVER...ISOLATED THUNDERSTORMS MAY DEVELOP IN OSAGE AND PAWNEE COUNTIES WHERE THE CAP IS SLIGHTLY WEAKER. AS THE FRONTAL BOUNDARY MOVES INTO NORTHEAST OKLAHOMA TONIGHT...THE WEAKENING CAP MAY ALLOW A FEW SEVERE THUNDERSTORMS TO DEVELOP NORTHWEST OF INTERSTATE 44 THIS EVENING. THE STORMS MAY MOVE ACROSS THE REST OF EASTERN OKLAHOMA LATE TONIGHT AND INTO FAR NORTHWEST ARKANSAS TOWARDS MORNING. FAVORABLE WIND PROFILES EXIST AGAIN THIS AFTERNOON AND TONIGHT FOR THE FORMATION OF LARGE HAIL AND WITH MODERATE INSTABILITY ACROSS THE AREA. DAMAGING WIND GUSTS AND AN ISOLATED TORNADO WILL ALSO BE POSSIBLE. .EMERGENCY MANAGEMENT AGENCY AND SPOTTER ACTIVATION... SPOTTER ACTIVATION MAY BE REQUIRED IN THE OUTLOOK AREA LATER THIS EVENING MAINLY IN LOCATIONS NORTHWEST OF INTERSTATE 44. AFTER MIDNIGHT...SPOTTER ACTIVATION MAY BE NEEDED IN LOCATIONS NORTH OF HIGHWAY 412.
Special weather statement, Apr 22, 1:00 PM CDT, 2 hours 7 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 THU APR 22 1999 A FEW SEVERE THUNDERSTORMS ARE POSSIBLE THIS AFTERNOON AND TONIGHT ACROSS PORTIONS OF NORTHEAST OKLAHOMA AND FAR NORTHWEST ARKANSAS. .SYNOPSIS... EARLY MORNING CONVECTION HAS CAUSED A LOW PRESSURE SYSTEM TO FORM OVER SOUTH CENTRAL KANSAS THIS MORNING. HOWEVER...THIS SYSTEM IS EXPECTED TO WEAKEN AS IT LIFTS NORTHEASTWARD ALONG A FRONTAL BOUNDARY WHICH EXTENDS FROM NORTHEAST KANSAS INTO THE TEXAS PANHANDLE. IN THE MEANTIME...A NEW LOW PRESSURE SYSTEM DEVELOPING OVER THE EASTERN TEXAS PANHANDLE WILL ALSO BEGIN A NORTHEASTWARD TREK ALONG THE SAME QUASI-STATIONARY BOUNDARY THIS AFTERNOON AND TONIGHT. THIS WILL DRAG A DRY LINE EXTENDING SOUTHWARD FROM THE LOW CLOSER TO EASTERN OKLAHOMA. .DISCUSSION... A FEW SEVERE THUNDERSTORMS WILL BE POSSIBLE NEAR THE FRONTAL BOUNDARY THROUGH TONIGHT. MOST OF THIS ACTIVITY WILL REMAIN NORTH AND WEST OF EASTERN OKLAHOMA THIS AFTERNOON. HOWEVER...AS THE SECOND LOW PRESSURE SYSTEM LIFTS INTO KANSAS THIS EVENING...THE FRONTAL BOUNDARY WILL MOVE SOUTHEASTWARD INTO NORTHEAST OKLAHOMA TONIGHT. THUNDERSTORM DEVELOPMENT WILL BE INHIBITED BY A CAPPING LAYER OF WARM AIR ALOFT OVER MOST OF EASTERN OKLAHOMA AND NORTHWEST ARKANSAS THIS AFTERNOON. HOWEVER...ISOLATED THUNDERSTORMS MAY DEVELOP IN OSAGE AND PAWNEE COUNTIES WHERE THE CAP IS SLIGHTLY WEAKER. AS THE FRONTAL BOUNDARY MOVES INTO NORTHEAST OKLAHOMA TONIGHT...THE WEAKENING CAP MAY ALLOW A FEW SEVERE THUNDERSTORMS TO DEVELOP NORTHWEST OF INTERSTATE 44 THIS EVENING. THE STORMS MAY MOVE ACROSS THE REST OF EASTERN OKLAHOMA LATE TONIGHT AND INTO FAR NORTHWEST ARKANSAS TOWARDS MORNING. FAVORABLE WIND PROFILES EXIST AGAIN THIS AFTERNOON AND TONIGHT FOR THE FORMATION OF LARGE HAIL AND WITH MODERATE INSTABILITY ACROSS THE AREA. DAMAGING WIND GUSTS AND AN ISOLATED TORNADO WILL ALSO BE POSSIBLE. .EMERGENCY MANAGEMENT AGENCY AND SPOTTER ACTIVATION... SPOTTER ACTIVATION MAY BE REQUIRED IN THE OUTLOOK AREA LATER THIS EVENING MAINLY IN LOCATIONS NORTHWEST OF INTERSTATE 44. AFTER MIDNIGHT...SPOTTER ACTIVATION MAY BE NEEDED IN LOCATIONS NORTH OF HIGHWAY 412.
The office that day
Everything else NWS Tulsa, OK issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Apr 21, 10:11 PM CDT | Severe Thunderstorm Warning | TSA | Pawnee | 64 min |
| Apr 21, 10:44 PM CDT | Tornado Warning | TSA | Pawnee | 31 min |
| Apr 21, 10:54 PM CDT | Tornado Warning | TSA | Osage | 36 min |
| Apr 21, 11:29 PM CDT | Severe Thunderstorm Warning | TSA | Pawnee | 46 min |
| Apr 21, 11:46 PM CDT | Severe Thunderstorm Warning | TSA | Creek | 44 min |
| Apr 22, 12:07 AM CDT | Severe Thunderstorm Warning | TSA | Osage, Tulsa | 53 min |
| Apr 22, 12:30 AM CDT | Severe Thunderstorm Warning | TSA | Nowata, Rogers, Washington | 45 min |
| Apr 22, 1:03 AM CDT | Severe Thunderstorm Warning | TSA | Craig, Mayes | 42 min |
| Apr 22, 1:22 AM CDT | Severe Thunderstorm Warning | TSA | Delaware, Ottawa | 38 min |
| Apr 22, 3:39 PM CDT | Severe Thunderstorm Warning | TSA | Nowata, Washington | 36 min |
| Apr 22, 3:55 PM CDT | Tornado Warning | TSA | Nowata, Washington | 35 min |
| Apr 22, 4:25 PM CDT | Tornado Warning | TSA | Craig | 35 min |
| Apr 22, 4:52 PM CDT | Severe Thunderstorm Warning | TSA | Nowata | 38 min |
| Apr 22, 5:01 PM CDT | Tornado Warning | TSA | Craig | 29 min |
| Apr 22, 5:14 PM CDT | Tornado Warning | TSA | Delaware, Ottawa | 46 min |
| Apr 22, 5:27 PM CDT | Tornado Warning | TSA | Craig | 33 min |
| Apr 22, 5:28 PM CDT | Severe Thunderstorm Warning | TSA | Rogers, Tulsa | 47 min |
| Apr 22, 5:37 PM CDT | Severe Thunderstorm Warning | TSA | Rogers | 53 min |
| Apr 22, 5:55 PM CDT | Severe Thunderstorm Warning | TSA | Mayes, Rogers, Wagoner | 50 min |
| Apr 22, 6:00 PM CDT | Severe Thunderstorm Warning | TSA | Craig, Delaware | 45 min |
| Apr 22, 6:33 PM CDT | Tornado Warning | TSA | Mayes, Rogers, Wagoner | 42 min |
Nearby
Severe Thunderstorm Warnings in Oklahoma, 1999Every severe thunderstorm warning 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; verification from NCEI's Storm Data; the sounding from the Mesonet's radiosonde archive.