Alert archive / Oklahoma / Severe Thunderstorm Warnings in 1999
Severe Thunderstorm Warning 372, NWS Tulsa, OK
NWS Tulsa, OK issued this severe thunderstorm warning at Jun 10, 1999, 4:04 PM CDT for Pittsburg County, Oklahoma. It was in force for 41 min. 1 report 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
- Jun 10, 1999, 4:04 PM CDT (21:04 UTC)
- Expired
- Jun 10, 1999, 4:45 PM CDT
- In force
- 41 min
- Issued by
- NWS Tulsa, OK
- Area
- Whole counties; the outline is the Mesonet’s reconstruction
County Pittsburg County, OK
What was reported inside it
| Time | Report | Where | Remark |
|---|---|---|---|
| Jun 10, 4:10 PM CDT | Hail 1 | Mc Alester, 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, 9.1 hours before the alert went out and 154 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
- 1208 J/kg
- Mixed-layer CIN
- -48 J/kg
- Mixed-layer LCL
- 682 m above ground
- 0-6 km bulk shear
- 19 kt
- 0-1 km storm-relative helicity
- 21 m²/s²
- 0-3 km storm-relative helicity
- -16 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 Jun 10, 3:55 PM CDT, 9 minutes earlier.
Area forecast discussion, Jun 10, 3:55 PM CDT, 9 minutes before
EASTERN OKLAHOMA/NORTHWEST ARKANSAS FORECAST DISCUSSION NATIONAL WEATHER SERVICE TULSA OK 355 PM CDT THU JUN 10 1999 PROBLEM(S) OF THE DAY: WILL THERE BE SEVERE CONVECTION? POPS WILL THE BE ANY FLOODING? SHOWERS AND THUNDERSTORMS CONTINUE TO MOVE SLOWLY NORTHEAST ACROSS NORTHEAST OKLAHOMA ALONG AN OUTFLOW BOUNDARY LEFT FROM THE CONVECTIVE COMPLEX WHICH AFFECTED NORTH CENTRAL OKLAHOMA THIS MORNING. WITH UPPER LEVEL VORT MAX OVER THE AREA AND THE ATMOSPHERE MODERATELY UNSTABLE...SOME OF THESE STORMS MAY APPROACH SEVERE LIMITS THIS EVENING. HIGH PRESSURE AT THE SURFACE WILL REMAIN OVER THE SOUTHEASTERN U.S. THROUGH 48 HOURS. SOUTHERLY WINDS BEHIND THIS HIGH WILL CONTINUE TO PUMP MOISTURE INTO THE FORECAST AREA. MEANWHILE A NEARLY STATIONARY SURFACE FRONT WILL STRETCH FROM NEW MEXICO THROUGH WESTERN OKLAHOMA AND CENTRAL KANSAS. SEVERAL WEAK UPPER LEVEL SHORT WAVES WILL MOVE ACROSS NORTHEAST OKLAHOMA JUST AHEAD OF THIS SURFACE FRONT... ENHANCING ANY CONVECTION WHICH DEVELOPS. THE FAVORABLE REGION FOR DEVELOPMENT WILL BE TO OUR WEST ALONG THE DRYLINE THEN MOVE EAST APPROACHING EASTERN OKLAHOMA DURING THE EARLY MORNING HOURS. WILL GO WITH LIKELY POPS WESTERN ZONES AND CHANCE ELSEWHERE TONIGHT AND BROAD BRUSH CHANCE POPS THROUGH SATURDAY. GUIDANCE TEMPS LOOK REASONABLE AND HAVENT STRAYED TOO MUCH. IN THE EXTENDED...MODELS HAVE SURFACE FRONT APPROACHING NORTHEAST OKLAHOMA AREA SATURDAY EVENING...AND THROUGH THE FORECAST AREA ON SUNDAY. WILL CONTINUE SLIGHT CHANCE OF POPS THROUGH SUNDAY. THEN MONDAY AND TUESDAY LOOK DRY BEFORE NEXT SYSTEM APPROACHES LATE TUESDAY. FCSTID = 33 TUL 68 87 69 85 / 60 30 20 30 FSM 70 88 68 84 / 40 30 20 30 MLC 69 88 68 86 / 50 30 20 30 BVO 67 85 68 83 / 60 30 20 30 FYV 67 86 65 82 / 50 30 20 30 IDB 68 90 67 90 / 40 30 20 30 BYV 66 85 64 81 / 50 30 20 30 MIO 67 85 68 82 / 60 30 20 30 MKO 68 87 69 85 / 60 30 20 30 F10 68 88 68 86 / 60 30 20 30 HHW 69 90 68 90 / 40 30 20 30 .TUL... AR...NONE. OK...NONE.
In the hours before
Special weather statement, Jun 10, 1:00 PM CDT, 3 hours 4 minutes before
ARZ001-002-010-011-019-020-029-OKZ049-053>076-111100- EASTERN OKLAHOMA/NORTHWEST ARKANSAS HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE TULSA OK 100 PM CDT THU JUN 10 1999 SCATTERED THUNDERSTORMS WILL OCCUR ACROSS EASTERN OKLAHOMA AND NORTHWEST ARKANSAS THIS AFTERNOON AND TONIGHT BUT NO ORGANIZED SEVERE WEATHER IS EXPECTED. .SYNOPSIS... SURFACE LOW PRESSURE OVER EASTERN NEW MEXICO WILL MOVE LITTLE THROUGH TONIGHT. A MOIST UNSTABLE AIRMASS WILL REMAIN IN PLACE ACROSS EASTERN OKLAHOMA AND NORTHWEST ARKANSAS. .DISCUSSION... A WELL DEFINED OUTFLOW BOUNDARY EXTENDED FROM LENAPAH TO TULSA TO WELTY TO NORMAN EARLY THIS AFTERNOON. THIS BOUNDARY HAS MOVED LITTLE SINCE EARLY THIS MORNING. THUNDERSTORMS HAVE BECOME QUITE NUMEROUS ALONG AND JUST NORTH OF THIS BOUNDARY AND ARE MOVING NORTHEAST PARALLEL TO THE BOUNDARY. THESE THUNDERSTORMS ARE EXPECTED TO CONTINUE AT LEAST THROUGH EARLY EVENING RESULTING IN LOCALIZED VERY HEAVY RAINFALL AMOUNTS DUE TO REPEATED THUNDERSTORMS TRACKING ACROSS THE SAME AREAS. THE MOST LIKELY AREAS TO EXPERIENCE EXCESSIVE RAINFALL AND POSSIBLE FLASH FLOODING THIS AFTERNOON AND EVENING ARE CREEK...WESTERN TULSA...SOUTHEAST OSAGE...WASHINGTON AND NORTHWEST NOWATA COUNTIES IN NORTHEAST OKLAHOMA. WIDELY SCATTERED THUNDERSTORMS WILL ALSO OCCUR DURING THE AFTERNOON AND EARLY EVENING ACROSS THE REST OF EASTERN OKLAHOMA AND NORTHWEST ARKANSAS. A FEW OF THESE STORMS MAY BRIEFLY PULSE UP TO NEAR SEVERE LIMITS AND PRODUCE LARGE HAIL AND DAMAGING WINDS. THE DURATION OF ANY SEVERE WEATHER WILL BE VERY SHORT HOWEVER. LATER TONIGHT...A COMPLEX OF STORMS MAY AGAIN APPROACH NORTHEAST OKLAHOMA FROM THE WEST. THESE STORMS ARE NOT EXPECTED TO BE SEVERE. .EMERGENCY MANAGEMENT AGENCY AND SPOTTER ACTIVATION... NO ORGANIZED SEVERE WEATHER IS EXPECTED THROUGH TONIGHT. THEREFORE...SPOTTER ACTIVATION OVER EASTERN OKLAHOMA AND NORTHWEST ARKANSAS IS NOT EXPECTED THROUGH TONIGHT.
Special weather statement, Jun 10, 1:00 PM CDT, 3 hours 4 minutes before
ARZ001-002-010-011-019-020-029-OKZ049-053>076-111100- EASTERN OKLAHOMA/NORTHWEST ARKANSAS HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE TULSA OK 100 PM CDT THU JUN 10 1999 SCATTERED THUNDERSTORMS WILL OCCUR ACROSS EASTERN OKLAHOMA AND NORTHWEST ARKANSAS THIS AFTERNOON AND TONIGHT BUT NO ORGANIZED SEVERE WEATHER IS EXPECTED. .SYNOPSIS... SURFACE LOW PRESSURE OVER EASTERN NEW MEXICO WILL MOVE LITTLE THROUGH TONIGHT. A MOIST UNSTABLE AIRMASS WILL REMAIN IN PLACE ACROSS EASTERN OKLAHOMA AND NORTHWEST ARKANSAS. .DISCUSSION... A WELL DEFINED OUTFLOW BOUNDARY EXTENDED FROM LENAPAH TO TULSA TO WELTY TO NORMAN EARLY THIS AFTERNOON. THIS BOUNDARY HAS MOVED LITTLE SINCE EARLY THIS MORNING. THUNDERSTORMS HAVE BECOME QUITE NUMEROUS ALONG AND JUST NORTH OF THIS BOUNDARY AND ARE MOVING NORTHEAST PARALLEL TO THE BOUNDARY. THESE THUNDERSTORMS ARE EXPECTED TO CONTINUE AT LEAST THROUGH EARLY EVENING RESULTING IN LOCALIZED VERY HEAVY RAINFALL AMOUNTS DUE TO REPEATED THUNDERSTORMS TRACKING ACROSS THE SAME AREAS. THE MOST LIKELY AREAS TO EXPERIENCE EXCESSIVE RAINFALL AND POSSIBLE FLASH FLOODING THIS AFTERNOON AND EVENING ARE CREEK...WESTERN TULSA...SOUTHEAST OSAGE...WASHINGTON AND NORTHWEST NOWATA COUNTIES IN NORTHEAST OKLAHOMA. WIDELY SCATTERED THUNDERSTORMS WILL ALSO OCCUR DURING THE AFTERNOON AND EARLY EVENING ACROSS THE REST OF EASTERN OKLAHOMA AND NORTHWEST ARKANSAS. A FEW OF THESE STORMS MAY BRIEFLY PULSE UP TO NEAR SEVERE LIMITS AND PRODUCE LARGE HAIL AND DAMAGING WINDS. THE DURATION OF ANY SEVERE WEATHER WILL BE VERY SHORT HOWEVER. LATER TONIGHT...A COMPLEX OF STORMS MAY AGAIN APPROACH NORTHEAST OKLAHOMA FROM THE WEST. THESE STORMS ARE NOT EXPECTED TO BE SEVERE. .EMERGENCY MANAGEMENT AGENCY AND SPOTTER ACTIVATION... NO ORGANIZED SEVERE WEATHER IS EXPECTED THROUGH TONIGHT. THEREFORE...SPOTTER ACTIVATION OVER EASTERN OKLAHOMA AND NORTHWEST ARKANSAS IS NOT EXPECTED THROUGH TONIGHT.
The office that day
Everything else NWS Tulsa, OK issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jun 10, 3:34 PM CDT | Flash Flood Warning | TSA | Wagoner | 116 min |
| Jun 10, 4:05 PM CDT | Severe Thunderstorm Warning | TSA | Adair, Sequoyah | 40 min |
| Jun 10, 6:44 PM CDT | Flash Flood Warning | TSA | Pushmataha | 3 hr |
| Jun 10, 3:20 PM CDT | Flash Flood Warning | TSA | Carroll | 115 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.