Alert archive / Oklahoma / Severe Thunderstorm Warnings in 1999
Severe Thunderstorm Warning 83, NWS Tulsa, OK
NWS Tulsa, OK issued this severe thunderstorm warning at Apr 3, 1999, 10:25 AM CST for Pittsburg County, Pushmataha County, Oklahoma. It was in force for 65 min. 3 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 3, 1999, 10:25 AM CST (16:25 UTC)
- Expired
- Apr 3, 1999, 11:30 AM CST
- In force
- 65 min
- Issued by
- NWS Tulsa, OK
- Area
- Whole counties
Counties Pittsburg County, OK, Pushmataha County, OK
The radar
The Western Arkansas radar (KSRX), 129 km from the middle of the area, began a volume at 16:26 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.
What was reported inside it
| Time | Report | Where | Remark |
|---|---|---|---|
| Apr 3, 10:30 AM CST | Hail 0.88 | Antlers, OK | |
| Apr 3, 10:45 AM CST | Thunderstorm Wind 52 | Weathers, OK | |
| Apr 3, 11:15 AM CST | Hail 0.75 | Clayton, 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 12:00Z, 4.4 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
- 0 J/kg
- Mixed-layer CIN
- No buoyant parcel
- Mixed-layer LCL
- 1227 m above ground
- 0-6 km bulk shear
- 62 kt
- 0-1 km storm-relative helicity
- -106 m²/s²
- 0-3 km storm-relative helicity
- -8 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
999 WUUS54 KTSA 031626 RRA SVRTUL OKC121-127-031730- BULLETIN - IMMEDIATE BROADCAST REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE TULSA OK 1025 AM CST SAT APR 3 1999 THE NATIONAL WEATHER SERVICE IN TULSA HAS ISSUED A * SEVERE THUNDERSTORM WARNING FOR SOUTHEAST PITTSBURG COUNTY IN SOUTHEAST OKLAHOMA WESTERN PUSHMATAHA COUNTY IN SOUTHEAST OKLAHOMA * UNTIL 1130 AM CST * AT 1025 AM CST SEVERE THUNDERSTORMS WERE LOCATED ALONG A LINE EXTENDING FROM 18 MILES NORTHWEST OF KOSOMA TO 8 MILES SOUTHWEST OF MOYERS TO 14 MILES SOUTHWEST OF ANTLERS...MOVING NORTHEAST AT 60 MPH. * SOME LOCATIONS AFFECTED INCLUDE... DUNBAR...KELLOND...STANLEY... KOSOMA...MOYERS...ANTLERS...HARTSHORNE AND BLANCO HAIL TO THE SIZE OF NICKELS AND WIND GUSTS TO 60 MPH CAN BE EXPECTED IN THE WARNED AREA.
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 3, 9:50 AM CST, 35 minutes earlier.
Area forecast discussion, Apr 3, 9:50 AM CST, 35 minutes before
EASTERN OKLAHOMA/NORTHWEST ARKANSAS FORECAST DISCUSSION
NATIONAL WEATHER SERVICE TULSA OK
950 AM CST SAT APR 3 1999
UPDATED FORECAST TO ADD A FLASH FLOOD WATCH FOR ALL BUT A SMALL PART
OF NORTHEAST OKLAHOMA FOR THE REST OF TODAY. THE 12Z NGM AND RUC
MODELS...ALONG WITH CURRENT OBSERVED TRENDS...ALL SUGGEST THAT
SHOWERS AND THUNDERSTORMS WILL SPREAD BACK TO THE NORTH ACORSS
NEARLY ALL OF THE AREA BY AROUND MIDDAY. IT ALSO NOW APPEARS THAT
SIGNIFICANT RAINS WILL NOT MOVE EAST OF THE AREA UNTIL LATER THIS
EVENING.
ALSO LOWERED MAXIMUM TEMPERATURES WITH ALL THE CLOUDS AND RAIN
AROUND AND ALSO DROPPED WIND SPEEDS BACK SOME. KEPT THE MENTION OF
SEVERE GOING WITH THE BEST CHANCES FOR SEVERE IN THE SOUTHERN AND
EASTERN PARTS OF THE FORECAST AREA.
COLD FRONT WILL MOVE LITTLE UNTIL THIS EVENING WHEN IT WILL FINALLY
SWEEP EAST ACROSS THE AREA.
LOOKS LIKE WE MAY DO IT ALL OVER AGAIN SUNDAY NIGHT AND MONDAY. MORE
LATER.
.TUL...
OK...FLASH FLOOD WATCH FOR THE REST OF TODAY FOR ZONES
49...53...56>58...61>63...AND 67>77.
AR...FLASH FLOOD WATCH FOR THE REST OF TODAY FOR ZONES
1...2...10...11...19...20 AND 29.
PLATEIn the hours before
Special weather statement, Apr 3, 6:00 AM CST, 4 hours 25 minutes before
ARZ001-002-010-011-019-020-029-OKZ049-053>076-041200- EASTERN OKLAHOMA/NORTHWEST ARKANSAS HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE TULSA OK 600 AM CST SAT APR 3 1999 ...A FEW SEVERE THUNDERSTORMS ARE EXPECTED OVER SOUTHEAST OKLAHOMA AND NORTHWEST ARKANSAS THIS MORNING... ...ISOLATED SEVERE THUNDERSTORMS ARE POSSIBLE AGAIN THIS AFTERNOON AND INTO THE EARLY EVENING OVER FAR EASTERN OKLAHOMA AND NORTHWEST ARKANSAS... .SYNOPSIS... AT 600 AM...A LINE OF STRONG TO SEVERE THUNDERSTORMS EXTENDED FROM NEAR FAYETTEVILLE IN NORTHWEST ARKANSAS TO HUGO IN FAR SOUTHEAST OKLAHOMA. THIS LINE OF THUNDERSTORMS EXISTED WELL AHEAD OF A COLD FRONT THAT STRETCHED FROM SOUTHEAST KANSAS INTO SOUTHWEST OKLAHOMA. IN ADDITION...A DRY LINE EXTENDED FROM NEAR THE OKLAHOMA CITY AREA SOUTHWARD INTO CENTRAL TEXAS. .DISCUSSION... THE LINE OF THUNDERSTORMS OVER NORTHWEST ARKANSAS AND SOUTHEAST OKLAHOMA IS EXPECTED TO SHIFT EAST OF THE AREA BY 9 AM. WHILE A SLOW WEAKENING TREND IS EXPECTED...WIND GUSTS OF 60 MPH AND DIME SIZE HAIL WILL REMAIN POSSIBLE WITH THIS LINE OF STORMS. MEANWHILE...A STRONG UPPER LEVEL DISTURBANCE OVER NEW MEXICO EARLY THIS MORNING WILL SWING INTO THE TEXAS PANHANDLE AND WESTERN OKLAHOMA BY LATE MORNING OR EARLY AFTERNOON. THIS WILL AID IN PUSHING THE COLD FRONT/DRYLINE COMBINATION EASTWARD INTO EASTERN OKLAHOMA. CLEARING WILL BE SLOW BEHIND THE INITIAL LINE OF THUNDERSTORMS...BUT ENOUGH AFTERNOON HEATING IS EXPECTED FOR THE ATMOSPHERE TO BECOME MODERATELY UNSTABLE. SURFACE BASED CONVERGENCE ALONG THE COLD FRONT OR DRYLINE...COMBINED WITH INCREASING INSTABILITY MAY LEAD TO THE REDEVELOPMENT OF THUNDERSTORMS THIS AFTERNOON ACROSS FAR EASTERN OKLAHOMA. THIS ACTIVITY IS EXPECTED TO DEVELOP MAINLY EAST OF HIGHWAY 69...OR EAST OF A VINITA TO MUSKOGEE TO MCALESTER LINE. ANY CONVECTION THAT FORMS WOULD SHIFT EAST INTO NORTHWEST ARKANSAS BY LATE AFTERNOON OR EARLY EVENING. WHILE SOME STORM ROTATION IS POSSIBLE...FORECAST WIND PROFILES SUGGEST THAT STRONG WINDS WILL BE THE PRIMARY SEVERE WEATHER THREAT. .EMERGENCY AGENCY AND SPOTTER ACTIVATION... SPOTTERS ACTIVATION MAY BE REQUIRED AGAIN BY THIS AFTERNOON. SPOTTER GROUPS AND EMERGENCY MANAGEMENT AGENCIES ARE URGED TO LISTEN TO LATER FORECASTS INCLUDING THE UPDATED HAZARDOUS WEATHER OUTLOOK TO BE ISSUED AROUND 1 PM.
Special weather statement, Apr 3, 6:00 AM CST, 4 hours 25 minutes before
ARZ001-002-010-011-019-020-029-OKZ049-053>076-041200- EASTERN OKLAHOMA/NORTHWEST ARKANSAS HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE TULSA OK 600 AM CST SAT APR 3 1999 ...A FEW SEVERE THUNDERSTORMS ARE EXPECTED OVER SOUTHEAST OKLAHOMA AND NORTHWEST ARKANSAS THIS MORNING... ...ISOLATED SEVERE THUNDERSTORMS ARE POSSIBLE AGAIN THIS AFTERNOON AND INTO THE EARLY EVENING OVER FAR EASTERN OKLAHOMA AND NORTHWEST ARKANSAS... .SYNOPSIS... AT 600 AM...A LINE OF STRONG TO SEVERE THUNDERSTORMS EXTENDED FROM NEAR FAYETTEVILLE IN NORTHWEST ARKANSAS TO HUGO IN FAR SOUTHEAST OKLAHOMA. THIS LINE OF THUNDERSTORMS EXISTED WELL AHEAD OF A COLD FRONT THAT STRETCHED FROM SOUTHEAST KANSAS INTO SOUTHWEST OKLAHOMA. IN ADDITION...A DRY LINE EXTENDED FROM NEAR THE OKLAHOMA CITY AREA SOUTHWARD INTO CENTRAL TEXAS. .DISCUSSION... THE LINE OF THUNDERSTORMS OVER NORTHWEST ARKANSAS AND SOUTHEAST OKLAHOMA IS EXPECTED TO SHIFT EAST OF THE AREA BY 9 AM. WHILE A SLOW WEAKENING TREND IS EXPECTED...WIND GUSTS OF 60 MPH AND DIME SIZE HAIL WILL REMAIN POSSIBLE WITH THIS LINE OF STORMS. MEANWHILE...A STRONG UPPER LEVEL DISTURBANCE OVER NEW MEXICO EARLY THIS MORNING WILL SWING INTO THE TEXAS PANHANDLE AND WESTERN OKLAHOMA BY LATE MORNING OR EARLY AFTERNOON. THIS WILL AID IN PUSHING THE COLD FRONT/DRYLINE COMBINATION EASTWARD INTO EASTERN OKLAHOMA. CLEARING WILL BE SLOW BEHIND THE INITIAL LINE OF THUNDERSTORMS...BUT ENOUGH AFTERNOON HEATING IS EXPECTED FOR THE ATMOSPHERE TO BECOME MODERATELY UNSTABLE. SURFACE BASED CONVERGENCE ALONG THE COLD FRONT OR DRYLINE...COMBINED WITH INCREASING INSTABILITY MAY LEAD TO THE REDEVELOPMENT OF THUNDERSTORMS THIS AFTERNOON ACROSS FAR EASTERN OKLAHOMA. THIS ACTIVITY IS EXPECTED TO DEVELOP MAINLY EAST OF HIGHWAY 69...OR EAST OF A VINITA TO MUSKOGEE TO MCALESTER LINE. ANY CONVECTION THAT FORMS WOULD SHIFT EAST INTO NORTHWEST ARKANSAS BY LATE AFTERNOON OR EARLY EVENING. WHILE SOME STORM ROTATION IS POSSIBLE...FORECAST WIND PROFILES SUGGEST THAT STRONG WINDS WILL BE THE PRIMARY SEVERE WEATHER THREAT. .EMERGENCY AGENCY AND SPOTTER ACTIVATION... SPOTTERS ACTIVATION MAY BE REQUIRED AGAIN BY THIS AFTERNOON. SPOTTER GROUPS AND EMERGENCY MANAGEMENT AGENCIES ARE URGED TO LISTEN TO LATER FORECASTS INCLUDING THE UPDATED HAZARDOUS WEATHER OUTLOOK TO BE ISSUED AROUND 1 PM.
Special weather statement, Apr 3, 8:30 AM CST, 1 hour 55 minutes before
ARZ001-002-010-011-019-020-029-OKZ049-053>076-041200- EASTERN OKLAHOMA/NORTHWEST ARKANSAS HAZARDOUS WEATHER OUTLOOK...UPDATED NATIONAL WEATHER SERVICE TULSA OK 830 AM CST SAT APR 3 1999 ...A FEW SEVERE THUNDERSTORMS ARE EXPECTED OVER SOUTHEAST OKLAHOMA AND NORTHWEST ARKANSAS THIS MORNING... ...ISOLATED SEVERE THUNDERSTORMS ARE POSSIBLE AGAIN THIS AFTERNOON AND INTO THE EARLY EVENING OVER FAR EASTERN OKLAHOMA AND NORTHWEST ARKANSAS... .SYNOPSIS... AT 830 AM...A LARGE AREA OF RAIN WITH EMBEDDED THUNDERSTORMS WAS LOCATED OVER MUCH OF EASTERN OKLAHOMA AND NORTHWEST ARKANSAS... GENERALLY TO THE SOUTHEAST OF I-44. THIS AREA OF RAIN AND THUNDERSTORMS EXISTED WELL AHEAD OF A COLD FRONT THAT STRETCHED FROM SOUTHEAST KANSAS INTO SOUTHWEST OKLAHOMA. IN ADDITION...A DRY LINE EXTENDED FROM NEAR THE OKLAHOMA CITY AREA SOUTHWARD INTO CENTRAL TEXAS. .DISCUSSION... THE RAIN AND THUNDERSTORMS OVER EASTERN OKLAHOMA AND NORTHWEST ARKANSAS THIS MORNING HAS SLOWED TO A CRAWL AND MAY CONTINUE ACROSS THE AREA FOR MUCH OF THE MORNING. DESPITE A WEAKENING TREND EXPECTED THROUGH THE MORNING...THE SLOW MOTION OF THE PRECIPITATION WILL LEAD TO A CONSIDERABLE THREAT OF HEAVY RAIN AND FLASH FLOODING THROUGH MID-DAY. IN ADDITION...SOME OF THE STRONGER STORMS MAY BRIEFLY APPROACH SEVERE LIMITS...ESPECIALLY ACROSS SOUTHEAST OKLAHOMA. MEANWHILE...A STRONG UPPER LEVEL DISTURBANCE OVER NEW MEXICO EARLY THIS MORNING WILL SWING INTO THE TEXAS PANHANDLE AND WESTERN OKLAHOMA BY LATE MORNING OR EARLY AFTERNOON. THIS WILL AID IN PUSHING THE COLD FRONT/DRYLINE COMBINATION EASTWARD INTO EASTERN OKLAHOMA. CLEARING WILL BE SLOW BEHIND THE INITIAL LINE OF THUNDERSTORMS...BUT ENOUGH AFTERNOON HEATING IS EXPECTED FOR THE ATMOSPHERE TO BECOME MODERATELY UNSTABLE. SURFACE BASED CONVERGENCE ALONG THE COLD FRONT OR DRYLINE...COMBINED WITH INCREASING INSTABILITY MAY LEAD TO THE REDEVELOPMENT OF THUNDERSTORMS THIS AFTERNOON ACROSS FAR EASTERN OKLAHOMA. THIS ACTIVITY IS EXPECTED TO DEVELOP MAINLY EAST OF HIGHWAY 69...OR EAST OF A VINITA TO MUSKOGEE TO MCALESTER LINE. ANY CONVECTION THAT FORMS WOULD SHIFT EAST INTO NORTHWEST ARKANSAS BY LATE AFTERNOON OR EARLY EVENING. WHILE SOME STORM ROTATION IS POSSIBLE...FORECAST WIND PROFILES SUGGEST THAT STRONG WINDS WILL BE THE PRIMARY SEVERE WEATHER THREAT. .EMERGENCY AGENCY AND SPOTTER ACTIVATION... SPOTTERS ACTIVATION MAY BE REQUIRED AGAIN BY THIS AFTERNOON. SPOTTER GROUPS AND EMERGENCY MANAGEMENT AGENCIES ARE URGED TO LISTEN TO LATER FORECASTS INCLUDING THE UPDATED HAZARDOUS WEATHER OUTLOOK TO BE ISSUED AROUND 1 PM.
Special weather statement, Apr 3, 8:30 AM CST, 1 hour 55 minutes before
ARZ001-002-010-011-019-020-029-OKZ049-053>076-041200- EASTERN OKLAHOMA/NORTHWEST ARKANSAS HAZARDOUS WEATHER OUTLOOK...UPDATED NATIONAL WEATHER SERVICE TULSA OK 830 AM CST SAT APR 3 1999 ...A FEW SEVERE THUNDERSTORMS ARE EXPECTED OVER SOUTHEAST OKLAHOMA AND NORTHWEST ARKANSAS THIS MORNING... ...ISOLATED SEVERE THUNDERSTORMS ARE POSSIBLE AGAIN THIS AFTERNOON AND INTO THE EARLY EVENING OVER FAR EASTERN OKLAHOMA AND NORTHWEST ARKANSAS... .SYNOPSIS... AT 830 AM...A LARGE AREA OF RAIN WITH EMBEDDED THUNDERSTORMS WAS LOCATED OVER MUCH OF EASTERN OKLAHOMA AND NORTHWEST ARKANSAS... GENERALLY TO THE SOUTHEAST OF I-44. THIS AREA OF RAIN AND THUNDERSTORMS EXISTED WELL AHEAD OF A COLD FRONT THAT STRETCHED FROM SOUTHEAST KANSAS INTO SOUTHWEST OKLAHOMA. IN ADDITION...A DRY LINE EXTENDED FROM NEAR THE OKLAHOMA CITY AREA SOUTHWARD INTO CENTRAL TEXAS. .DISCUSSION... THE RAIN AND THUNDERSTORMS OVER EASTERN OKLAHOMA AND NORTHWEST ARKANSAS THIS MORNING HAS SLOWED TO A CRAWL AND MAY CONTINUE ACROSS THE AREA FOR MUCH OF THE MORNING. DESPITE A WEAKENING TREND EXPECTED THROUGH THE MORNING...THE SLOW MOTION OF THE PRECIPITATION WILL LEAD TO A CONSIDERABLE THREAT OF HEAVY RAIN AND FLASH FLOODING THROUGH MID-DAY. IN ADDITION...SOME OF THE STRONGER STORMS MAY BRIEFLY APPROACH SEVERE LIMITS...ESPECIALLY ACROSS SOUTHEAST OKLAHOMA. MEANWHILE...A STRONG UPPER LEVEL DISTURBANCE OVER NEW MEXICO EARLY THIS MORNING WILL SWING INTO THE TEXAS PANHANDLE AND WESTERN OKLAHOMA BY LATE MORNING OR EARLY AFTERNOON. THIS WILL AID IN PUSHING THE COLD FRONT/DRYLINE COMBINATION EASTWARD INTO EASTERN OKLAHOMA. CLEARING WILL BE SLOW BEHIND THE INITIAL LINE OF THUNDERSTORMS...BUT ENOUGH AFTERNOON HEATING IS EXPECTED FOR THE ATMOSPHERE TO BECOME MODERATELY UNSTABLE. SURFACE BASED CONVERGENCE ALONG THE COLD FRONT OR DRYLINE...COMBINED WITH INCREASING INSTABILITY MAY LEAD TO THE REDEVELOPMENT OF THUNDERSTORMS THIS AFTERNOON ACROSS FAR EASTERN OKLAHOMA. THIS ACTIVITY IS EXPECTED TO DEVELOP MAINLY EAST OF HIGHWAY 69...OR EAST OF A VINITA TO MUSKOGEE TO MCALESTER LINE. ANY CONVECTION THAT FORMS WOULD SHIFT EAST INTO NORTHWEST ARKANSAS BY LATE AFTERNOON OR EARLY EVENING. WHILE SOME STORM ROTATION IS POSSIBLE...FORECAST WIND PROFILES SUGGEST THAT STRONG WINDS WILL BE THE PRIMARY SEVERE WEATHER THREAT. .EMERGENCY AGENCY AND SPOTTER ACTIVATION... SPOTTERS ACTIVATION MAY BE REQUIRED AGAIN BY THIS AFTERNOON. SPOTTER GROUPS AND EMERGENCY MANAGEMENT AGENCIES ARE URGED TO LISTEN TO LATER FORECASTS INCLUDING THE UPDATED HAZARDOUS WEATHER OUTLOOK TO BE ISSUED AROUND 1 PM.
The office that day
Everything else NWS Tulsa, OK issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Apr 3, 2:32 AM CST | Severe Thunderstorm Warning | TSA | Creek, Osage, Pawnee | 58 min |
| Apr 3, 3:11 AM CST | Severe Thunderstorm Warning | TSA | Okfuskee, Okmulgee, Tulsa | 49 min |
| Apr 3, 3:11 AM CST | Severe Thunderstorm Warning | TSA | Washington | 49 min |
| Apr 3, 3:32 AM CST | Severe Thunderstorm Warning | TSA | Osage | 28 min |
| Apr 3, 3:47 AM CST | Severe Thunderstorm Warning | TSA | Muskogee, Wagoner | 43 min |
| Apr 3, 3:47 AM CST | Severe Thunderstorm Warning | TSA | Rogers | 43 min |
| Apr 3, 4:04 AM CST | Severe Thunderstorm Warning | TSA | Nowata, Washington | 41 min |
| Apr 3, 4:23 AM CST | Severe Thunderstorm Warning | TSA | Craig, Mayes | 37 min |
| Apr 3, 4:23 AM CST | Severe Thunderstorm Warning | TSA | Cherokee, Muskogee, Wagoner | 37 min |
| Apr 3, 4:23 AM CST | Severe Thunderstorm Warning | TSA | McIntosh | 37 min |
| Apr 3, 4:47 AM CST | Severe Thunderstorm Warning | TSA | Delaware, Ottawa | 58 min |
| Apr 3, 5:13 AM CST | Severe Thunderstorm Warning | TSA | Latimer | 62 min |
| Apr 3, 6:00 AM CST | Severe Thunderstorm Warning | TSA | Choctaw | 45 min |
| Apr 3, 6:12 AM CST | Flash Flood Warning | TSA | Pushmataha | 3 hr |
| Apr 3, 6:59 AM CST | Flash Flood Warning | TSA | Latimer, LeFlore | 3 hr |
| Apr 3, 7:42 AM CST | Severe Thunderstorm Warning | TSA | LeFlore | 48 min |
| Apr 3, 10:06 AM CST | Severe Thunderstorm Warning | TSA | Okfuskee | 39 min |
| Apr 3, 11:06 AM CST | Severe Thunderstorm Warning | TSA | Latimer, Pushmataha | 39 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; radar from the NEXRAD Level II archive.