Intense heavy rainfall occurred over part of Murray county, including the Turner Falls area. A low water crossing flooded, making many campers unable to get to their cars.
Every event with a place to put it. Tap one for its entry below.
Deaths and injuries are direct and indirect together, as the offices filed them. Damage is property and crops in the dollars of the year, not adjusted for inflation, and only where an office estimated it.
The episode as NWS OUN wrote it up.
Intense heavy rainfall occurred over part of Murray county, including the Turner Falls area. A low water crossing flooded, making many campers unable to get to their cars.
The local office's own words before the first event, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.
NWS Norman, OK wrote its last area forecast discussion before the first event at Apr 8, 5:30 AM CST, 2 hours 30 minutes earlier.
AREA FORECAST DISCUSSION NATIONAL WEATHER SERVICE NORMAN OK 630 AM CDT SUN APR 8 2012 .AVIATION... SHOWERS AND TSTMS ARE EXPECTED TO REMAIN SE OF AREA SITES. VFR CONDITIONS WILL CONTINUE NORTH TODAY WITH VFR/MVFR CIGS SOUTH. CONDITIONS WILL BEGIN TO LOWER AGAIN LATER TONIGHT WITH SOME MVFR/IFR CIGS SOUTH LATE TONIGHT. && .PREV DISCUSSION... /ISSUED 408 AM CDT SUN APR 8 2012/ .DISCUSSION...SCATTERED SHOWERS AND THUNDERSTORMS CONTINUE THIS MORNING ACROSS SRN PARTS OF THE FA AIDED BY WEAK IMPULSE LIFTING NE THROUGH TX. EXPECT THE ACTIVITY TO CONTINUE THROUGH THE EARLY MORNING HOURS THEN END LATER TODAY AS WEAK FRONTAL BOUNDARY DRIFTS FARTHER SOUTH AND UPPER SYSTEM MOVES BY. A RELATIVE LULL IN ACTIVE WEATHER PATTERN EXPECTED TONIGHT. THUNDERSTORM CHANCES INCREASE AGAIN ON MONDAY AS ANOTHER FRONT DRIFTS SOUTHWARD INTO THE AREA AND AN UPPER LEVEL IMPULSE APPROACHES FROM THE NORTHWEST. SOUTHEASTERLY LOW LEVEL FLOW AHEAD OF THE FRONT WILL ALLOW HIGHER DEWPOINT AIR TO RETURN TO THE AREA AND WILL CONTRIBUTE TO INCREASING INSTABILITY BY AFTERNOON. EXPECT FRONT TO BE THE FOCUS FOR STORM DEVELOPMENT MONDAY AFTERNOON WITH ACTIVITY EXPECTED TO SPREAD SOUTHEASTWARD DURING THE LATE AFTERNOON AND EVENING. THE MODERATE INSTABILITY COMBINED WITH A FAVORABLE SHEAR PROFILE WILL SUPPORT SEVERE STORM DEVELOPMENT. ACTIVE WEATHER PATTERN WILL CONTINUE THROUGH MIDWEEK WITH FRONTAL BOUNDARY AND MOISTURE LINGERING IN THE AREA. BY LATER IN THE WEEK UPPER RIDGE AXIS SHIFTS EASTWARD WITH UPPER TROUGH DEVELOPING OVER THE WESTERN U.S. THUNDERSTORM CHANCES WILL CONTINUE INTO THE WEEKEND AS THIS SYSTEM MOVES SLOWLY EASTWARD WITH PATTERN FAVORABLE FOR SEVERE STORM DEVELOPMENT. && .PRELIMINARY POINT TEMPS/POPS... OKLAHOMA CITY OK 69 54 76 57 / 20 10 30 40 HOBART OK 69 54 77 57 / 20 10 40 50 WICHITA FALLS TX 73 59 82 60 / 40 20 30 50 GAGE OK 71 48 71 52 / 10 10 50 50 PONCA CITY OK 72 48 72 49 / 10 10 30 30 DURANT OK 72 59 76 61 / 50 20 30 40 && .OUN WATCHES/WARNINGS/ADVISORIES... OK...NONE. TX...NONE. && 03/02
HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE NORMAN OK
432 AM CDT SUN APR 8 2012
OKZ004>048-050>052-TXZ083>090-090945-
HARPER-WOODS-ALFALFA-GRANT-KAY-ELLIS-WOODWARD-MAJOR-GARFIELD-
NOBLE-ROGER MILLS-DEWEY-CUSTER-BLAINE-KINGFISHER-LOGAN-PAYNE-
BECKHAM-WASHITA-CADDO-CANADIAN-OKLAHOMA-LINCOLN-GRADY-MCCLAIN-
CLEVELAND-POTTAWATOMIE-SEMINOLE-HUGHES-HARMON-GREER-KIOWA-JACKSON-
TILLMAN-COMANCHE-STEPHENS-GARVIN-MURRAY-PONTOTOC-COAL-COTTON-
JEFFERSON-CARTER-JOHNSTON-ATOKA-LOVE-MARSHALL-BRYAN-HARDEMAN-
FOARD-WILBARGER-WICHITA-KNOX-BAYLOR-ARCHER-CLAY-
432 AM CDT SUN APR 8 2012
THIS HAZARDOUS WEATHER OUTLOOK COVERS NORTHERN...WESTERN...
CENTRAL...AND SOUTHERN OKLAHOMA...AND WESTERN NORTH TEXAS.
.DAY ONE...TODAY AND TONIGHT
THUNDERSTORM OUTLOOK...
A FEW STRONG THUNDERSTORMS ARE POSSIBLE...BUT SEVERE WEATHER IS
UNLIKELY.
DISCUSSION...
ELEVATED THUNDERSTORMS ARE EXPECTED TO CONTINUE THROUGH AT LEAST
LATE THIS MORNING ACROSS PORTIONS OF SOUTHERN OKLAHOMA...NORTH
OF A COLD FRONT...AS A WEAK UPPER LEVEL WAVE PASSES OVER THIS
REGION. ELEVATED INSTABILITY WILL DECREASE SLOWLY THROUGHOUT THE
LATE MORNING HOURS...BUT ENOUGH MAY BE PRESENT MAINLY EAST OF
I-35 FOR A FEW STORMS TO PRODUCE SMALL HAIL UP TO THE SIZE OF
DIMES THROUGH MID DAY.
PROBABILITY TABLE...
VALID THROUGH 700 AM CDT MONDAY APR 9.
PROBABILITY OF THUNDERSTORMS OCCURRING IN THE
NWS NORMAN COUNTY WARNING AREA...100 PERCENT.
PROBABILITY OF SEVERE STORMS IF STORMS OCCUR...5 PERCENT.
OTHER HAZARDOUS WEATHER...
NONE.
.DAYS TWO THROUGH SEVEN...MONDAY THROUGH SATURDAY
THUNDERSTORM OUTLOOK...
THUNDERSTORM CHANCES WILL CONTINUE THROUGH THE WEEKEND AND INTO
NEXT WEEK. THERE IS A SLIGHT RISK OF SEVERE THUNDERSTORMS MONDAY
AFTERNOON AND EVENING ACROSS MUCH OF OKLAHOMA AND NORTH TEXAS. THE
MAIN THREATS WILL BE LARGE HAIL AND DAMAGING WINDS. THERE IS ALSO A
SIGNIFICANT RISK OF SEVERE WEATHER AGAIN ON THURSDAY.
OTHER HAZARDOUS WEATHER...
NONE.
THE NEXT SCHEDULED HAZARDOUS WEATHER OUTLOOK WILL BE ISSUED BY NOON
TODAY.SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE NORMAN OK 408 AM CDT SUN APR 8 2012 OKZ047-051-052-081000- BRYAN OK-MARSHALL OK-JOHNSTON OK- 408 AM CDT SUN APR 8 2012 ...SIGNIFICANT WEATHER ADVISORY FOR NORTHWESTERN BRYAN...MARSHALL AND JOHNSTON COUNTIES UNTIL 500 AM CDT... AT 407 AM CDT...A STRONG THUNDERSTORM WAS LOCATED NEAR MADILL... MOVING EAST AT 20 MPH. HAZARDS INCLUDE... HAIL UP TO ONE-HALF INCH DIAMETER... WIND GUSTS TO 40 MPH... LOCATIONS IMPACTED INCLUDE... MADILL...TISHOMINGO...OAKLAND...RAVIA...MILBURN...FILLMORE...NIDA... RUSSETT AND LITTLE CITY. MONITOR THE WEATHER SITUATION CLOSELY AND BE ALERT FOR THREATENING WEATHER CONDITIONS. LAT...LON 3398 9690 3418 9689 3436 9650 3407 9640 TIME...MOT...LOC 0907Z 254DEG 17KT 3412 9678
SPECIAL WEATHER STATEMENTNATIONAL WEATHER SERVICE NORMAN OK458 AM
CDT SUN APR 8 2012
OKZ051-052-081045-
BRYAN OK-MARSHALL OK-
458 AM CDT SUN APR 8 2012
...SIGNIFICANT WEATHER ADVISORY FOR BRYAN AND MARSHALL COUNTIES
UNTIL 545 AM CDT...
AT 455 AM CDT...A STRONG THUNDERSTORM WAS LOCATED NEAR KINGSTON...
MOVING EAST AT 30 MPH.
HAZARDS INCLUDE...
HAIL UP TO ONE-HALF INCH DIAMETER...
WIND GUSTS TO 40 MPH...
LOCATIONS IMPACTED INCLUDE...
DURANT...CALERA...KINGSTON...COLBERT...SILO...ARMSTRONG...MEAD...
WOODVILLE...CARTWRIGHT...LAKE TEXOMA AND MCBRIDE.
LAT...LON 3387 9679 3387 9683 3402 9684 3414 9631
3383 9631 3384 9662 3389 9659 3391 9665
3391 9668 3384 9670 3384 9678
TIME...MOT...LOC 0955Z 261DEG 26KT 3394 9677SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE NORMAN OK
543 AM CDT SUN APR 8 2012
OKZ052-081115-
BRYAN OK-
543 AM CDT SUN APR 8 2012
...SIGNIFICANT WEATHER ADVISORY FOR BRYAN COUNTY UNTIL 615 AM CDT...
AT 540 AM CDT...A STRONG THUNDERSTORM WAS LOCATED NEAR ALBANY...
MOVING EAST AT 20 MPH.
HAZARDS INCLUDE...
HAIL UP TO ONE-HALF INCH DIAMETER...
WIND GUSTS TO 40 MPH...
LOCATIONS IMPACTED INCLUDE...
BENNINGTON...ALBANY...UTICA AND WADE.
LAT...LON 3388 9593 3384 9602 3386 9603 3384 9604
3384 9615 3380 9617 3380 9626 3398 9628
3405 9594 3395 9594 3392 9591 3392 9588
3386 9586
TIME...MOT...LOC 1040Z 265DEG 17KT 3389 9619SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE NORMAN OK
812 AM CDT SUN APR 8 2012
OKZ041-046-081400-
MURRAY OK-CARTER OK-
812 AM CDT SUN APR 8 2012
...SPECIAL WEATHER STATEMENT...
AT 808 AM CDT...A STRONG THUNDERSTORM WAS LOCATED NEAR TURNER
FALLS...MOVING EAST AT 35 MPH.
HAZARDS INCLUDE...
HAIL UP TO ONE-HALF INCH DIAMETER...
MINOR FLOODING IN AREAS OF POOR DRAINAGE...
LOCATIONS IMPACTED INCLUDE...
SULPHUR...DOUGHERTY...TURNER FALLS AND LAKE OF THE ARBUCKLES.
LAT...LON 3432 9718 3449 9724 3452 9691 3451 9688
3444 9687 3435 9690
TIME...MOT...LOC 1308Z 253DEG 30KT 3442 9715
WRThe Norman radar (KTLX), 101 km away, was scanning. The volume nearest the first event began at 14:00 UTC.
1 flash flood. Local standard time, as filed.
Over 500 people were evacuated due to the flooding of Honey Creek. The flash flooding made it impossible for many campers to retrieve their vehicles.
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in Oklahoma in 2012Every state in 2012This day in weather historyWarnings in Oklahoma, April 2012
NOAA National Centers for Environmental Information, Storm Events Database, compiled from the National Weather Service’s monthly Storm Data. Complete through 2026-06; NCEI adds each month about 75 days after it ends and revises past years a few times a year. Rebuilt 2026-09-24. Each event’s entry at NCEI: 370916.