Alert archive / Oklahoma / Flash Flood Warnings in 1990
Flash Flood Warning 41, NWS Norman, OK
NWS Norman, OK issued this flash flood warning at May 2, 1990, 11:45 PM CDT for Choctaw County, Pushmataha County, Oklahoma. It was in force for 6 hr.
The area
The counties it named.
The facts
- Issued
- May 2, 1990, 11:45 PM CDT (04:45 UTC)
- Expired
- May 3, 1990, 6:00 AM CDT
- In force
- 6 hr
- Issued by
- NWS Norman, OK
- Area
- Whole counties
Counties Choctaw County, OK, Pushmataha County, OK
The radar
The WSR-88D network and its archive begin in 1991, so there is no radar volume for this alert.
The nearest sounding before it
Norman, OK (KOUN), launched 00:00Z, 4.8 hours before the alert went out and 209 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
- 615 m above ground
- 0-6 km bulk shear
- 46 kt
- 0-1 km storm-relative helicity
- 438 m²/s²
- 0-3 km storm-relative helicity
- 482 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 KOKC 030443 FFWOKC OKC005-013-019-023-029-063-069-085-095-099-123-127-031100- BULLETIN - EBS ACTIVATION REQUESTED FLASH FLOOD WARNING NATIONAL WEATHER SERVICE OKLAHOMA CITY OK 1145 PM CDT WED MAY 2 1990 THE NATIONAL WEATHER SERVICE IN OKLAHOMA CITY HAS ISSUED A FLASH FLOOD WARNING EFFECTIVE UNTIL 600 AM CDT FOR THE FOLLOWING OKLAHOMA LOCATIONS... IN SOUTHEAST OKLAHOMA ...ATOKA COUNTY...BRYAN COUNTY...CARTER COUNTY...CHOCTAW COUNTY ...COAL COUNTY...HUGHES COUNTY...JOHNSTON COUNTY...LOVE COUNTY ...MARSHALL COUNTY...MURRAY COUNTY...PONTOTOC COUNTY... PUSHMATAHA COUNTY AT 1145 PM NATIONAL WEATHER SERVICE RADAR INDICATED LIGHT TO MODERATE RAIN WIDESPREAD ACROSS SOUTHCENTRAL AND SOUTHEAST OKLAHOMA...WITH THUNDERSTORMS PRODUCING SOME LOCALLY HEAVY RAINFALL. NUMEROUS REPORTS OF FLOODING CONTINUE ACROSS THE WARNING AREA WITH MANROADS UNDERWATER. EVACUATIONS ARE IN PROGRESS AT SCATTERED LOW-LYING AREAS. LITTLE IMPROVEMENT IS EXPECTED THE NEXT SEVERAL HOURS AS ADDITIONAL RAINFALL RUNS OFF THE SATURATED GROUND. THIS CONTINUES TO BE A DANGEROUS FLASH FLOOD SITUATION AND RESIDENTS OF FLOOD PRONE OR LOW-LYING AREAS ARE URGED TO MOVE TO HIGHER GROUND. BE ESPECIALL>Y CAUTIOUS AT NIGHT WHEN IT IS HARDER TO RECOGNIZE THE DANGERS OF FLOODS AND FLASH FLOODS. IF FLASH FLOODING IS OBSERVED...ACT QUICKLY. MOVE UP TO ESCAPE FLOOD WATERS. DO NOT STAY IN AREAS SUBJECT TO FLOODING WHEN WATER BEGINS RISING.
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.
In the hours before
Special weather statement, May 2, 11:03 PM CDT, 42 minutes before
OKC085-019-067-030500 SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE OKLAHOMA CITY OK 1103PM CDT WED MAY 02 1990 ...STRONG THUNBDERSTORM APPROACHING LOVE COUNTY... AT 11 PM A STRONG THUNDERSTORM WAS LOCATED IN NORTH TEXAS 40 MILES SOUTHWEST OF ARDMORE. THE THUNDERSTORM WAS MOVING NORTHEAST AT 45 MPH. THIS THUNDERSTORM WILL MOVE INTO SOUTHCENTRAL OKLAHOMA...BETWEEN RUBOTTOM AND LEON...BETWEEN 1115 PM AND 1130 PM. STRONG WINDS...HAIL... AND BRIEF HEAVY RAINS ARE POSSIBLE. A TORNADO WATCH REMAINS IN EFFECT FOR PORTIONS OF SOUTHERN OKLAHOMA UNTIL 4 AM WEDNESDAY MORNING. PRODUCE THE WIDESPREAD RAIN ACROSS THE STATE. AS THE UPPER LEVEL STORM SYSTEM APPROCHES FROM THE WEST LATER THIS AFTERNOON AND TONIGHT RAINFALL WILL INCREASE ACROSS THE STATE WITH ADDITIONAL RAINFALL IN EXCESS OF 5 INCHES POSSIBLE OVER MAINLY SOUTHERN AND CENTRAL SECTIONS. THE HEAVY RAIN IS LIKLEY TO CONTINUE OVER MOST OF THE STATE THROUGH TONIGHT AND INTO THE DAY THURSDAY. A FEW THUNDERSTORMS LATE THIS AFTERNOON AND TONIGHT IN THE SOUTHEAST PORTION OF THE STATE COULD PRODUCE SOME HAIL.
Special weather statement, May 2, 11:09 PM CDT, 36 minutes before
OKC085-019-067-030500 SPECIAL WEATHER STATEMENT...CORRECTION NATIONAL WEATHER SERVICE OKLAHOMA CITY OK 1103PM CDT WED MAY 02 1990 ...STRONG THUNBDERSTORM APPROACHING LOVE COUNTY... AT 11 PM A STRONG THUNDERSTORM WAS LOCATED IN NORTH TEXAS 40 MILES SOUTHWEST OF ARDMORE. THE THUNDERSTORM WAS MOVING NORTHEAST AT 45 MPH. THIS THUNDERSTORM WILL MOVE INTO SOUTHCENTRAL OKLAHOMA...BETWEEN RUBOTTOM AND LEON...BETWEEN 1115 PM AND 1130 PM. STRONG WINDS...HAIL... AND BRIEF HEAVY RAINS ARE POSSIBLE. A TORNADO WATCH REMAINS IN EFFECT FOR PORTIONS OF SOUTHERN OKLAHOMA UNTIL 4 AM WEDNESDAY MORNING.
The office that day
Everything else NWS Norman, OK issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| May 2, 9:56 PM CDT | Flash Flood Warning | OUN | Choctaw, Pushmataha | 2 hr |
| May 2, 11:45 PM CDT | Flash Flood Warning | OUN | Atoka, Bryan, Carter, Coal, Johnston, Marshall and 2 more | 6 hr |
| May 2, 11:45 PM CDT | Flash Flood Warning | OUN | Hughes | 6 hr |
| May 2, 11:45 PM CDT | Flash Flood Warning | OUN | Love | 6 hr |
| May 2, 11:46 PM CDT | Severe Thunderstorm Warning | OUN | Choctaw | 44 min |
Nearby
Flash Flood Warnings in Oklahoma, 1990Every flash flood warning in 1990
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.