Alert archive / Oklahoma / Severe Thunderstorm Warnings in 1999
Severe Thunderstorm Warning 41, NWS Tulsa, OK
NWS Tulsa, OK issued this severe thunderstorm warning at Feb 16, 1999, 1:13 AM CST for Osage County, Oklahoma. It was in force for 47 min. 1 report came from 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, with what was reported inside it.
The facts
- Issued
- Feb 16, 1999, 1:13 AM CST (07:13 UTC)
- Expired
- Feb 16, 1999, 2:00 AM CST
- In force
- 47 min
- Issued by
- NWS Tulsa, OK
- Area
- Whole counties; the outline is the Mesonet’s reconstruction
County Osage County, OK
What was reported inside it
| Time | Report | Where | Remark |
|---|---|---|---|
| Feb 16, 1:15 AM CST | Hail 0.75 | Shidler, 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.
The nearest sounding before it
Norman, OK (KOUN), launched 00:00Z, 7.2 hours before the alert went out and 193 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
- 1523 m above ground
- 0-6 km bulk shear
- 48 kt
- 0-1 km storm-relative helicity
- 126 m²/s²
- 0-3 km storm-relative helicity
- 253 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
000 TTAA00 KTUL 160714 SVRTUL OKC113-160800- BULLETIN - IMMEDIATE BROADCAST REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE TULSA OK 113 AM CST TUE FEB 16 1999 THE NATIONAL WEATHER SERVICE IN TULSA HAS ISSUED A * SEVERE THUNDERSTORM WARNING FOR... OSAGE COUNTY IN NORTHEAST OKLAHOMA * UNTIL 200 AM CST * AT 112 AM CST A SEVERE THUNDERSTORM WAS LOCATED 5 MILES SOUTH OF SHIDLER...MOVING EAST NORTHEAST AT 40 MPH. * SOME LOCATIONS NEAR THE PATH OF THIS STORM INCLUDE... BIGHEART... PEARSONIA AND SHIDLER DIME SIZE HAIL WAS REPORTED 1 MILE WEST OF BURBANK AT 107 AM. HAIL TO THE SIZE OF DIMES AND WIND GUSTS TO 60 MPH CAN BE EXPECTED IN THE WARNED AREA. LAT...LON 3677 9670 3662 9668 3674 9602 3693 9607 &
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 Feb 15, 8:30 PM CST, 4 hours 43 minutes earlier.
Area forecast discussion, Feb 15, 8:30 PM CST, 4 hours 43 minutes before
EASTERN OKLAHOMA/NORTHWEST ARKANSAS FORECAST DISCUSSION NATIONAL WEATHER SERVICE TULSA OK 830 PM CST MON FEB 15 1999 UPPER SYSTEM MOVING INTO THE TEXAS AND OKLAHOMA PANHANDLES AT THIS TIME. THUNDERSTORMS HAVE RECENTLY DEVELOPED IN THE NORTHEAST TEXAS PANHANDLE DESPITE MEAGER MOISTURE AND EXPECT ACTIVITY TO DEVELOP EAST INTO NORTHEAST OKLAHOMA BY AROUND MIDNIGHT AND INTO NORTHWEST ARKANSAS SHORTLY AFTER MIDNIGHT. COLD FRONT CURRENTLY ALONG A KANSAS CITY TO WICHITA TO GAGE LINE WILL ALSO MOVE SLOWLY SOUTHEAST ACROSS ABOUT THE NORTHWEST HALF OF THE FORECAST AREA LATER TONIGHT AND THROUGH THE REST OF THE AREA TUESDAY MORNING. MAIN CHANGES TO THE FORECAST WILL BE TO UP POPS IN THE NORTH AND LOWER THEM IN THE SOUTH. CURRENT SATELLITE TRENDS EVEN SHOW THAT MOST OF THE CLOUDS WILL MISS SOUTHEAST OKLAHOMA BUT EXPECT SOME LOWER CLOUD DEVELOPMENT IN THAT AREA LATER TONIGHT. THE BEST RAIN CHANCES DOWN SOUTH MAY ACTUALLY COME TUESDAY MORNING. TEMPERATURES LOOK PRETTY GOOD. WILL TAKE A CLOSER LOOK AT TEMPERATURES IN NORTHWEST ARKANSAS AS MAY HAVE TO RAISE THEM JUST A CATEGORY OR SO OVERNIGHT. NO CHANGES TO LATER PERIODS. 12Z RUNS OF THE ECMWF AND UKMET BOTH SUGGEST THE POSSIBILITY OF SNOW HERE LATE THURSDAY INTO EARLY FRIDAY. WILL LET THE MIDNIGHT SHIFT ADDRESS THIS POSSIBILITY. .TUL... OK...NONE. AR...NONE. PLATE
In the hours before
Local storm report, Feb 16, 1:09 AM CST, 4 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE TULSA OK
109 AM CST TUE FEB 16 1999
TIME(CST) .....CITY LOCATION..... STATE ...EVENT/REMARKS...
....COUNTY LOCATION....
0107 AM 1 W BURBANK OK .75 INCH HAIL
02/16/99 OSAGELocal storm report, Feb 16, 1:09 AM CST, 4 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE TULSA OK
109 AM CST TUE FEB 16 1999
TIME(CST) .....CITY LOCATION..... STATE ...EVENT/REMARKS...
....COUNTY LOCATION....
0107 AM 1 W BURBANK OK .75 INCH HAIL
02/16/99 OSAGEThe office that day
Everything else NWS Tulsa, OK issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Feb 16, 12:37 AM CST | Severe Thunderstorm Warning | TSA | Osage | 38 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.