Alert archive / Oklahoma / Flash Flood Warnings in 1998
Flash Flood Warning 38, NWS Tulsa, OK
NWS Tulsa, OK issued this flash flood warning at Oct 2, 1998, 4:40 AM CDT for Osage County, Oklahoma. It was in force for 3 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
- Oct 2, 1998, 4:40 AM CDT (09:40 UTC)
- Expired
- Oct 2, 1998, 7:30 AM CDT
- In force
- 3 hr
- Issued by
- NWS Tulsa, OK
- Area
- Whole counties
County Osage County, OK
The nearest sounding before it
Norman, OK (KOUN), launched 00:00Z, 9.7 hours before the alert went out and 181 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
- 195 J/kg
- Mixed-layer CIN
- -152 J/kg
- Mixed-layer LCL
- 1109 m above ground
- 0-6 km bulk shear
- 41 kt
- 0-1 km storm-relative helicity
- 303 m²/s²
- 0-3 km storm-relative helicity
- 376 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.4
The text
As transmitted, in the capitals the NWS used until 2016.
000 TTAA00 KTUL 020941 FFWTUL OKC113-021230- BULLETIN - EAS ACTIVATION REQUESTED FLASH FLOOD WARNING NATIONAL WEATHER SERVICE TULSA OK 440 AM CDT FRI OCT 2 1998 THE NATIONAL WEATHER SERVICE IN TULSA HAS ISSUED A * FLASH FLOOD WARNING FOR... NORTHWESTERN OSAGE COUNTY IN NORTHEASTERN OKLAHOMA * UNTIL 730 AM CDT * DOPPLER RADAR ESTIMATES INDICATE THAT AS MUCH AS 4 TO 6 INCHES OF RAIN HAS FALLEN OVER NORTHWESTERN OSAGE COUNTY DURING THE NIGHT. THE HEAVIEST RAINFALL AMOUNTS WERE IN THE EXTREME NORTHWEST CORNER OF THE COUNTY FROM AROUND THE GRAINOLA AREA TO AROUND WEBB CITY. * ADDITONAL SHOWERS AND THUNDERSTORMS WILL CONTINUE TO MOVE ACROSS THIS AREA THIS MORNING WITH ADDITONAL RAINFALL AMOUNTS IN EXCESS OF 2 OR 3 INCHES POSSIBLE. . DON'T DRIVE INTO AREAS WHERE WATER COVERS THE ROAD! THE WATER DEPTH MAY BE TOO GREAT TO ALLOW YOUR CAR TO CROSS SAFELY.
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 Oct 1, 9:30 PM CDT, 7 hours 10 minutes earlier.
Area forecast discussion, Oct 1, 9:30 PM CDT, 7 hours 10 minutes before
EASTERN OKLAHOMA/NORTHWEST ARKANSAS FORECAST DISCUSSION NATIONAL WEATHER SERVICE TULSA OK 930 PM CDT THU OCT 1 1998 LARGE AREA OF SHOWERS AND THUNDERSTORMS MOVING INTO CENTRAL OKLAHOMA IN ADVANCE OF APPROACHING SHORTWAVE. AS LOW LEVEL JET CRANKS UP OVERNIGHT THIS ACTIVITY SHOULD SUSTAIN ITSELF AND PERHAPS EVEN INCREASE. THE MAIN PRECIPITATION AREA WILL AFFECT NORTHEAST OKLAHOMA AND SOUTHERN KANSAS WITH ELEVATED HAILERS POSSIBLE LATER TONIGHT AND FRIDAY MORNING. HEAVY RAINFALL IS THE BIGGER THREAT THOUGH. WILL NOT ISSUE A FLASH FLOOD WATCH BUT WILL MENTION THE POSSIBILITY OF HEAVY RAINFALL IN NORTHEAST OKLAHOMA TONIGHT AND FRIDAY MORNING. WILL RAISE MINIMUM TEMPERATURES IN MOST AREAS TONIGHT. FRONTAL BOUNDARY IS BEING REINFORCED TO THE SOUTH IN WESTERN OKLAHOMA BUT EXPECT LITTLE OR NO SOUTHWARD MOVEMENT IN EASTERN OKLAHOMA AND NORTHWEST ARKANSAS DUE TO INCREASING SOUTHERLY LOW LEVEL FLOW. FRONT SHOULD JUMP NORTH INTO KANSAS FRIDAY AND TEMPERATURES COULD SKYROCKET WITH ANY SUNSHINE AT ALL. DUE TO UNCERTAINTIES IN THE TIMING OF PRECIPITATION ENDING AND CLEARING ON FRIDAY...WILL LEAVE CURRENT FORECAST TEMPERATURES FRIDAY AS IS BUT GUT FEELING IS MOST AREAS WILL SEE THE 80S. .TUL... OK...NONE. AR...NONE. PLATE
Nearby
Flash Flood Warnings in Oklahoma, 1998Every flash flood warning in 1998
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.