Alert archive / Oklahoma / Flash Flood Warnings in 1999
Flash Flood Warning 62, NWS Tulsa, OK
NWS Tulsa, OK issued this flash flood warning at Jun 10, 1999, 3:34 PM CDT for Wagoner County, Oklahoma. It was in force for 116 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
- Jun 10, 1999, 3:34 PM CDT (20:34 UTC)
- Expired
- Jun 10, 1999, 5:30 PM CDT
- In force
- 116 min
- Issued by
- NWS Tulsa, OK
- Area
- Whole counties; the outline is the Mesonet’s reconstruction
County Wagoner County, OK
The radar
The Tulsa radar (KINX), 28 km from the middle of the area, began a volume at 20:36 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
Springfield, MO (KSGF), launched 12:00Z, 8.6 hours before the alert went out and 187 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
- 922 J/kg
- Mixed-layer CIN
- -48 J/kg
- Mixed-layer LCL
- 1144 m above ground
- 0-6 km bulk shear
- 19 kt
- 0-1 km storm-relative helicity
- 58 m²/s²
- 0-3 km storm-relative helicity
- 40 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.9
The text
As transmitted, in the capitals the NWS used until 2016.
000 TTAA00 KTUL 102038 FFWTUL OKC145-102230- BULLETIN - EAS ACTIVATION REQUESTED FLASH FLOOD WARNING NATIONAL WEATHER SERVICE TULSA OK 334 PM CDT THU JUN 10 1999 THE NATIONAL WEATHER SERVICE IN TULSA HAS ISSUED A * FLASH FLOOD WARNING FOR WAGONER COUNTY IN NORTHEAST OKLAHOMA * UNTIL 530 PM CDT * AT 334 PM CDT RADAR INDICATED AN AREA OF VERY HEAVY RAIN OVER MUCH OF WAGONER COUNTY. RADAR ESTIMATES THAT FROM 2 TO 4 INCHES HAS FALLEN FROM NEAR PORTER TO THE NORTH END OF FORT GIBSON LAKE. SLOW MOVING THUNDERSTORMS WILL CONTINUE TO MOVE OVER THE SAME AREAS AND MAY PRODUCE ANOTHER 1 TO 3 INCHES OF RAINFALL THIS AFTERNOON. PORTER...TULLAHASSEE AND WAGONER AND ADJACENT COMMUNITIES MAY BE AFFECTED BY FLASH FLOODING. A FLASH FLOOD WARNING MEANS THAT FLOODING IS OCCURRING OR IS IMMINENT. MOST FLASH FLOOD DEATHS OCCUR IN AUTOMOBILES. DO NOT ATTEMPT TO CROSS BRIDGES...DIPS...OR OTHER LOW SPOTS IF WATER COVERS THE ROADWAY. NEVER TRY TO CROSS A FLOWING STREAM...EVEN A SMALL ONE...ON FOOT. TO ESCAPE RISING WATER MOVE UP TO HIGHER GROUND. LAT...LON 3582 9560 3584 9536 3606 9527 3609 9567
What forecasters said that day
The local office's own words before this flash flood 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 flash flood warning went out at Jun 10, 11:35 AM CDT, 3 hours 59 minutes earlier.
Area forecast discussion, Jun 10, 11:35 AM CDT, 3 hours 59 minutes before
EASTERN OKLAHOMA/NORTHWEST ARKANSAS FORECAST DISCUSSION NATIONAL WEATHER SERVICE TULSA OK 1135 AM CDT THU JUN 10 1999 HAVE SENT A QUICK UPDATE TO ACCOUNT FOR SHOWERS AND THUNDERSTORMS DEVELOPING ALONG O UTFLOW BOUNDARY FROM NEAR BARTLESVILLE THROUGH TULSA. SHOWERS AND THUNDERSTORMS WILL CONTINUE TO REDEVELOP ALONG THIS BOUNDARY THROUGH THIS AFTERNOON SO HAVE UPDATE POPS FOR THIS AREA TO LIKELY. .TUL... AR...NONE. OK...NONE.
In the hours before
Special weather statement, Jun 10, 1:00 PM CDT, 2 hours 34 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, 2 hours 34 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, 4:04 PM CDT | Severe Thunderstorm Warning | TSA | Pittsburg | 41 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 |
Nearby
Flash Flood Warnings in Oklahoma, 1999Every flash flood 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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.