Alert archive / Oklahoma / Flash Flood Warnings in 1999
Flash Flood Warning 52, NWS Tulsa, OK
NWS Tulsa, OK issued this flash flood warning at May 17, 1999, 3:11 PM CDT for LeFlore County, Oklahoma. It was in force for 2 hr. No storm report in the archive falls inside the area while it was in force.
The area
The counties it named.
The facts
- Issued
- May 17, 1999, 3:11 PM CDT (20:11 UTC)
- Expired
- May 17, 1999, 5:15 PM CDT
- In force
- 2 hr
- Issued by
- NWS Tulsa, OK
- Area
- Whole counties
County LeFlore County, OK
The nearest sounding before it
Springfield, MO (KSGF), launched 12:00Z, 8.2 hours before the alert went out and 237 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
- 1332 m above ground
- 0-6 km bulk shear
- 56 kt
- 0-1 km storm-relative helicity
- -88 m²/s²
- 0-3 km storm-relative helicity
- -53 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 172014 FFWTUL ARC047-131-OKC079-172215- BULLETIN - EAS ACTIVATION REQUESTED FLASH FLOOD WARNING NATIONAL WEATHER SERVICE TULSA OK 311 PM CDT MON MAY 17 1999 THE NATIONAL WEATHER SERVICE IN TULSA HAS ISSUED A * FLASH FLOOD WARNING FOR FRANKLIN COUNTY IN NORTHWEST ARKANSAS SEBASTIAN COUNTY IN NORTHWEST ARKANSAS NORTHERN LE FLORE COUNTY IN SOUTHEAST OKLAHOMA * UNTIL 515 PM CDT * AT 311 PM CDT RADAR INDICATED CLUSTERS OF THUNDERSTORMS CONTAINING VERY HEAVY RAIN ACROSS THE WARNED AREA. RADAR HAS ESTIMATED TWO TO FOUR INCHES HAD FALLEN IN THE PAST HOUR. THIS CLUSTER OF STORMS IS MOVING LITTLE...THEREFORE ADDITIONAL RAINFALL AMOUNTS OF TWO TO THREE INCHES WILL LEAD TO FLASH FLOODING. BLOOMER...JENNY LIND...FT CHAFFEE...BONANZA...EXCELSIOR... BURNVILLE...WASHBURN...LAVACA...BARLING...GREENWOOD...HACKETT...FORT SMITH...BRANCH...ARKOMA...POCOLA...SPIRO...BOKOSHE...PANAMA...CAMERON AND POTEAU AND ADJACENT COMMUNITIES MAY BE AFFECTED BY| FLASH FLOODING.
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 May 17, 11:10 AM CDT, 4 hours 1 minute earlier.
Area forecast discussion, May 17, 11:10 AM CDT, 4 hours 1 minute before
EASTERN OKLAHOMA/NORTHWEST ARKANSAS FORECAST DISCUSSION...RETRAN NATIONAL WEATHER SERVICE TULSA OK 1110 AM CDT MON MAY 17 1999 WILL WAIT TO BETWEEN 1130 AM AND NOON TO UPDATE AS DO NOT KNOW WHEN OR IF SPC IS GOING TO ISSUE WATCH. UPDATE WILL TRY TO CURB THE MORNING AND AFTERNOON WORDING IN CURRENT ZONES. UPDATE WILL ALSO INCORPORATE CURRENT RADAR TRENDS. BAND OF THUNDERSTORMS EXTENDS FROM NORTHWEST ARKANSAS INTO EAST CENTRAL OKLAHOMA AND CONTINUES TO PUSH EAST. THINK THERE IS SOME CHANCE OF REDEVELOPMENT TO THE WEST AS LOCATION OF THE COLD FRONT IS MUDDLED DUE TO THE THUNDERSTORMS. WIND SHIFTED TO THE NORTH WITH THE LINE OF STORMS BUT HAS VEERED AROUND TO THE SOUTHEAST BEHIND THE LINE. CLOUD COVER ALSO A PROBLEM AS BREAKS OCCURRING TO THE SOUTH OF AND TO THE WEST OF THE THUNDERSTORMS COMPLEX WILL PROBABLY GO WITH PARTLY CLOUDY WHERE THUNDERSTORM CHANCES ARE LESS THAN LIKELY. TEMPERATURES SHOULD REBOUND WITH A LITTLE SUN AND SHOULD ONLY NEED MINOR TWEEKS. .TUL... AR...NONE. OK...NONE. ABBAS
In the hours before
Special weather statement, May 17, 1:00 PM CDT, 2 hours 11 minutes before
ARZ001-002-010-011-019-020-029-OKZ049-053>076-181100- EASTERN OKLAHOMA/NORTHWEST ARKANSAS HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE TULSA OK 100 PM CDT MON MAY 17 1999 ...A FEW SEVERE THUNDERSTORMS ARE POSSIBLE THROUGH THIS EVENING IN SOUTHEASTERN OKLAHOMA AND NORTHWEST ARKANSAS... .SYNOPSIS... AT 100 PM...A SURFACE LOW PRESSURE AREA WAS CENTERED IN NORTH CENTRAL TEXAS WITH ANOTHER LOW LOCATED IN IOWA. A COLD FRONT WAS LOCATED BETWEEN THE TWO SYSTEMS MOVING THROUGH SOUTHWEST MISSOURI INTO EASTERN OKLAHOMA THEN INTO NORTH CENTRAL TEXAS. AN UPPER LEVEL DISTURBANCE WAS ALSO LOCATED OVER NORTHWEST KANSAS AND WILL MOVE INTO MISSOURI BY LATE TONIGHT. .DISCUSSION... THE AIRMASS OVER SOUTHEAST OKLAHOMA AND NORTHWEST ARKANSAS REMAINS UNSTABLE THIS AFTERNOON. THE SURFACE COLD FRONT JUST NOW MOVING INTO NORTHEAST OKLAHOMA WILL CONTINUE TO MOVE SOUTHEAST THIS AFTERNOON. AS IT DOES...A FEW STRONG TO SEVERE THUNDERSTORMS MAY DEVELOP ALONG IT ACROSS SOUTHEAST OKLAHOMA WHERE TEMPERATURES HAVE HAD A CHANCE TO WARM TO AROUND 80 DEGREES. THESE STORMS SHOULD MOVE TO THE NORTHEAST INTO NORTHWEST ARKANSAS. IF STORMS MOVE ACROSS AREAS OF NORTHWEST ARKANSAS THAT RECEIVED HEAVY RAINS THIS MORNING... ADDITIONAL RAINS MAY CAUSE FLOODING OF LOW LYING AREAS THIS AFTERNOON INTO THE EARLY EVENING. GIVEN THE AMOUNT OF INSTABILITY IN PLACE ACROSS SOUTHEAST OKLAHOMA AND SLIGHTLY VEERING WIND PROFILES...LARGE HAIL AND DAMAGING WIND GUSTS WILL BE THE PRIMARY THREAT FOR THIS AFTERNOON MAINLY SOUTH AND EAST OF A LINE FROM OKMULGEE OKLAHOMA TO FAYETTEVILLE ARKANSAS. HOWEVER...AN ISOLATED TORNADO REMAINS POSSIBLE. IN ADDITION...VERY HEAVY RAINFALL WILL LIKELY ACCOMPANY SOME OF THE STRONGER STORMS. .EMERGENCY MANAGEMENT AGENCY AND SPOTTER ACTIVATION... EMERGENCY MANAGEMENT AGENCY AND SPOTTER GROUPS SHOULD BE PREPARED FOR POSSIBLE ACTIVATION...MAINLY IN SOUTHEAST OKLAHOMA AND NORTHWEST ARKANSAS UNTIL EARLY EVENING.
Special weather statement, May 17, 1:00 PM CDT, 2 hours 11 minutes before
ARZ001-002-010-011-019-020-029-OKZ049-053>076-181100- EASTERN OKLAHOMA/NORTHWEST ARKANSAS HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE TULSA OK 100 PM CDT MON MAY 17 1999 ...A FEW SEVERE THUNDERSTORMS ARE POSSIBLE THROUGH THIS EVENING IN SOUTHEASTERN OKLAHOMA AND NORTHWEST ARKANSAS... .SYNOPSIS... AT 100 PM...A SURFACE LOW PRESSURE AREA WAS CENTERED IN NORTH CENTRAL TEXAS WITH ANOTHER LOW LOCATED IN IOWA. A COLD FRONT WAS LOCATED BETWEEN THE TWO SYSTEMS MOVING THROUGH SOUTHWEST MISSOURI INTO EASTERN OKLAHOMA THEN INTO NORTH CENTRAL TEXAS. AN UPPER LEVEL DISTURBANCE WAS ALSO LOCATED OVER NORTHWEST KANSAS AND WILL MOVE INTO MISSOURI BY LATE TONIGHT. .DISCUSSION... THE AIRMASS OVER SOUTHEAST OKLAHOMA AND NORTHWEST ARKANSAS REMAINS UNSTABLE THIS AFTERNOON. THE SURFACE COLD FRONT JUST NOW MOVING INTO NORTHEAST OKLAHOMA WILL CONTINUE TO MOVE SOUTHEAST THIS AFTERNOON. AS IT DOES...A FEW STRONG TO SEVERE THUNDERSTORMS MAY DEVELOP ALONG IT ACROSS SOUTHEAST OKLAHOMA WHERE TEMPERATURES HAVE HAD A CHANCE TO WARM TO AROUND 80 DEGREES. THESE STORMS SHOULD MOVE TO THE NORTHEAST INTO NORTHWEST ARKANSAS. IF STORMS MOVE ACROSS AREAS OF NORTHWEST ARKANSAS THAT RECEIVED HEAVY RAINS THIS MORNING... ADDITIONAL RAINS MAY CAUSE FLOODING OF LOW LYING AREAS THIS AFTERNOON INTO THE EARLY EVENING. GIVEN THE AMOUNT OF INSTABILITY IN PLACE ACROSS SOUTHEAST OKLAHOMA AND SLIGHTLY VEERING WIND PROFILES...LARGE HAIL AND DAMAGING WIND GUSTS WILL BE THE PRIMARY THREAT FOR THIS AFTERNOON MAINLY SOUTH AND EAST OF A LINE FROM OKMULGEE OKLAHOMA TO FAYETTEVILLE ARKANSAS. HOWEVER...AN ISOLATED TORNADO REMAINS POSSIBLE. IN ADDITION...VERY HEAVY RAINFALL WILL LIKELY ACCOMPANY SOME OF THE STRONGER STORMS. .EMERGENCY MANAGEMENT AGENCY AND SPOTTER ACTIVATION... EMERGENCY MANAGEMENT AGENCY AND SPOTTER GROUPS SHOULD BE PREPARED FOR POSSIBLE ACTIVATION...MAINLY IN SOUTHEAST OKLAHOMA AND NORTHWEST ARKANSAS UNTIL EARLY EVENING.
Local storm report, May 17, 1:59 PM CDT, 1 hour 12 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE TULSA OK
159 PM CDT MON MAY 17 1999
TIME(CDT) .....CITY LOCATION..... STATE ...EVENT/REMARKS...
....COUNTY LOCATION....
0325 AM CINCINNATI AR WIND DAMAGE
05/17/99 WASHINGTON SEVERAL LARGE TREES
UPROOTED
1047 AM 3 SW FARMINGTON AR TORNADO
05/17/99 WASHINGTONLocal storm report, May 17, 1:59 PM CDT, 1 hour 12 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE TULSA OK
159 PM CDT MON MAY 17 1999
TIME(CDT) .....CITY LOCATION..... STATE ...EVENT/REMARKS...
....COUNTY LOCATION....
0325 AM CINCINNATI AR WIND DAMAGE
05/17/99 WASHINGTON SEVERAL LARGE TREES
UPROOTED
1047 AM 3 SW FARMINGTON AR TORNADO
05/17/99 WASHINGTONLocal storm report, May 17, 2:22 PM CDT, 49 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE TULSA OK
222 PM CDT MON MAY 17 1999
TIME(CDT) .....CITY LOCATION..... STATE ...EVENT/REMARKS...
....COUNTY LOCATION....
0205 PM FAIRLAND OK 1.75 INCH HAIL
05/17/99 OTTAWA EMERGENCY MANAGEMENT
REPORTLocal storm report, May 17, 2:22 PM CDT, 49 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE TULSA OK
222 PM CDT MON MAY 17 1999
TIME(CDT) .....CITY LOCATION..... STATE ...EVENT/REMARKS...
....COUNTY LOCATION....
0205 PM FAIRLAND OK 1.75 INCH HAIL
05/17/99 OTTAWA EMERGENCY MANAGEMENT
REPORTThe office that day
Everything else NWS Tulsa, OK issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| May 16, 11:24 PM CDT | Severe Thunderstorm Warning | TSA | Osage, Pawnee | 66 min |
| May 16, 11:55 PM CDT | Severe Thunderstorm Warning | TSA | Creek | 50 min |
| May 17, 12:26 AM CDT | Severe Thunderstorm Warning | TSA | Osage, Pawnee | 49 min |
| May 17, 12:32 AM CDT | Severe Thunderstorm Warning | TSA | Washington | 43 min |
| May 17, 12:50 AM CDT | Severe Thunderstorm Warning | TSA | Tulsa | 25 min |
| May 17, 12:52 AM CDT | Severe Thunderstorm Warning | TSA | Okfuskee | 53 min |
| May 17, 1:14 AM CDT | Severe Thunderstorm Warning | TSA | Nowata | 46 min |
| May 17, 1:18 AM CDT | Severe Thunderstorm Warning | TSA | McIntosh, Okmulgee | 57 min |
| May 17, 1:18 AM CDT | Severe Thunderstorm Warning | TSA | Pittsburg | 57 min |
| May 17, 1:34 AM CDT | Severe Thunderstorm Warning | TSA | Craig | 41 min |
| May 17, 2:04 AM CDT | Severe Thunderstorm Warning | TSA | Haskell, Latimer, Muskogee | 56 min |
| May 17, 2:27 AM CDT | Severe Thunderstorm Warning | TSA | Cherokee, Sequoyah | 63 min |
| May 17, 2:36 AM CDT | Severe Thunderstorm Warning | TSA | Delaware, Mayes | 54 min |
| May 17, 2:50 AM CDT | Severe Thunderstorm Warning | TSA | Adair | 55 min |
| May 17, 2:50 AM CDT | Severe Thunderstorm Warning | TSA | LeFlore | 55 min |
| May 17, 3:07 AM CDT | Severe Thunderstorm Warning | TSA | Craig, Ottawa | 53 min |
| May 17, 8:13 AM CDT | Severe Thunderstorm Warning | TSA | Creek | 32 min |
| May 17, 8:30 AM CDT | Severe Thunderstorm Warning | TSA | Tulsa | 30 min |
| May 17, 9:16 AM CDT | Severe Thunderstorm Warning | TSA | Muskogee, Wagoner | 29 min |
| May 17, 10:00 AM CDT | Severe Thunderstorm Warning | TSA | Haskell | 45 min |
| May 17, 10:10 AM CDT | Severe Thunderstorm Warning | TSA | Latimer, Pittsburg | 35 min |
| May 17, 10:30 AM CDT | Severe Thunderstorm Warning | TSA | Adair | 45 min |
| May 17, 10:30 AM CDT | Severe Thunderstorm Warning | TSA | Sequoyah | 45 min |
| May 17, 1:55 PM CDT | Severe Thunderstorm Warning | TSA | Haskell | 35 min |
| May 17, 2:05 PM CDT | Severe Thunderstorm Warning | TSA | Pittsburg | 40 min |
| May 17, 2:31 PM CDT | Severe Thunderstorm Warning | TSA | Pushmataha | 44 min |
| May 17, 2:32 PM CDT | Severe Thunderstorm Warning | TSA | Latimer, Pittsburg | 43 min |
| May 17, 3:05 PM CDT | Severe Thunderstorm Warning | TSA | LeFlore | 40 min |
| May 17, 3:35 PM CDT | Flash Flood Warning | TSA | Latimer | 115 min |
| May 17, 4:08 PM CDT | Severe Thunderstorm Warning | TSA | Latimer, LeFlore | 37 min |
| May 17, 4:51 PM CDT | Severe Thunderstorm Warning | TSA | Pushmataha | 54 min |
| May 17, 4:56 PM CDT | Flash Flood Warning | TSA | LeFlore | 3 hr |
| May 17, 5:09 PM CDT | Severe Thunderstorm Warning | TSA | LeFlore, Sequoyah | 51 min |
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.