A thunderstorm moved through Blackwell during the mid-evening hours producing localized tree damage, mainly to the southeast quarter of town. No other damage was reported.
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.
A thunderstorm moved through Blackwell during the mid-evening hours producing localized tree damage, mainly to the southeast quarter of town. No other damage was reported.
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 Jun 20, 8:29 PM CST, 26 minutes earlier.
AREA FORECAST DISCUSSION NATIONAL WEATHER SERVICE NORMAN OK 929 PM CDT SAT JUN 20 2009 .DISCUSSION... THE MAIN AREA OF RAIN SHOULD CLEAR THE NORTHEAST PART OF OUR FORECAST AREA WITHIN THE NEXT HOUR OR TWO. IN RETROSPECT... WE PROBABLY SHOULD HAVE HAD HIGHER POPS FOR THE NORTHWEST HALF OF OKLAHOMA AND WESTERN NORTH TEXAS... BUT THE STORMS HELD TOGETHER LONGER AND STRONGER THAN ANTICIPATED. THE NIGHTTIME INVERSION SHOULD ELIMINATE ANY CHANCE OF SURFACE- BASED CONVECTION AFTER THE NORTHEAST STORMS MOVE OUT. HOWEVER... THE CONTINUING FLOW OF TROPICAL MOISTURE ALOFT MAY YET CAUSE SOME OVERNIGHT CONVECTION... SO THE EXISTING POPS NOW LOOK REASONABLE. OTHER THAN PERHAPS SOME ISOLATED AFTERNOON CONVECTION... IT APPEARS THAT THIS WILL BE OUR LAST CHANCE FOR RAIN FOR A WHILE... AS THE UPPER RIDGE DRIFTS WEST TO COVER THE SOUTHERN PLAINS FOR MOST OF NEXT WEEK. && .PRELIMINARY POINT TEMPS/POPS... OKLAHOMA CITY OK 73 96 75 98 / 10 10 10 0 HOBART OK 73 96 75 100 / 20 10 10 0 WICHITA FALLS TX 75 97 77 101 / 10 10 10 0 GAGE OK 68 95 71 101 / 40 10 10 0 PONCA CITY OK 75 95 76 98 / 20 10 10 0 DURANT OK 75 95 75 97 / 10 10 0 10 && .OUN WATCHES/WARNINGS/ADVISORIES... OK...NONE. TX...NONE. && 23/26
HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE NORMAN OK
1200 PM CDT SAT JUN 20 2009
OKZ004>048-050>052-TXZ083>090-211000-
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-
1200 PM CDT SAT JUN 20 2009
THIS HAZARDOUS WEATHER OUTLOOK COVERS NORTHERN...WESTERN...
CENTRAL...AND SOUTHERN OKLAHOMA...AND WESTERN NORTH TEXAS.
.DAY ONE...TODAY AND TONIGHT...
THUNDERSTORM OUTLOOK...
SEVERE THUNDERSTORMS ARE UNLIKELY.
DISCUSSION...
SCATTERED SHOWERS AND A FEW THUNDERSTORMS CONTINUE TO FORM WITHIN A
REGION OF DEEP MOISTURE OVER THE PANHANDLES AND NORTHWEST OKLAHOMA. THE
MOISTURE IS IN PLACE AHEAD OF AN UPPER LEVEL TROUGH OVER ARIZONA.
WHILE THE UPPER TROUGH MOVES NORTH...LOWER AND MID-LEVEL WINDS
INCREASE. HOWEVER...THE WARM FRONT IS MOVING OUT OF NORTHWEST
OKLAHOMA SO ANY SEVERE WEATHER RISK IS EXPECTED TO BE IN KANSAS.
MOVEMENT OF THUNDERSTORMS WOULD ALSO BE AWAY FROM OKLAHOMA.
PROBABILITY TABLE...
VALID THROUGH 700 AM CDT SUNDAY JUN 21.
PROBABILITY OF THUNDERSTORMS OCCURRING IN THE
NWS NORMAN COUNTY WARNING AREA...60 PERCENT.
PROBABILITY OF SEVERE STORMS IF STORMS OCCUR...LESS THAN 20 PERCENT.
OTHER HAZARDOUS WEATHER...
NONE.
.DAYS TWO THROUGH SEVEN...SUNDAY THROUGH FRIDAY...
THUNDERSTORM OUTLOOK...
AN UPPER LEVEL RIDGE CENTERED OVER THE LOWER MISSISSIPPI VALLEY
WILL SHIFT WEST SUNDAY INTO THE MIDDLE OF NEXT WEEK. THEREFORE...
THUNDERSTORMS CHANCES WILL BE VERY SLIM.
OTHER HAZARDOUS WEATHER...
HEAT INDICES WILL CONTINUE TO REACH THE UPPER 90S IN MANY AREAS...
AND MAY EXCEED 105 LOCALLY... EACH AFTERNOON.
THE NEXT SCHEDULED HAZARDOUS WEATHER OUTLOOK WILL BE ISSUED AT 5 AM
SUNDAY.The Vance AFB radar (KVNX), 76 km away, was scanning. The volume nearest the first event began at 02:54 UTC.
1 thunderstorm wind. Local standard time, as filed.
Numerous medium to large tree limbs were downed. The damage was confined mainly to the southeast part of town. Monetary damages were estimated.
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in Oklahoma in 2009Every state in 2009This day in weather historyWarnings in Oklahoma, June 2009
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: 185814.