An isolated severe thunderstorm occurred over northwest Arkansas during the late afternoon hours of the 27th.
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 TSA wrote it up.
An isolated severe thunderstorm occurred over northwest Arkansas during the late afternoon hours of the 27th.
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 Tulsa, OK wrote its last area forecast discussion before the first event at Jul 27, 2:20 PM CST, 2 hours 21 minutes earlier.
AREA FORECAST DISCUSSION NATIONAL WEATHER SERVICE TULSA OK 320 PM CDT MON JUL 27 2009 .DISCUSSION... WELL-DEFINED MID LEVEL WAVE CONTINUES TO SLOWLY DRIFT ACROSS SOUTHERN OKLAHOMA THIS AFTERNOON AND HAS CONTINUED TO FORCE A LARGE AREA OF RAIN AND A FEW THUNDERSTORMS SOUTH OF TUL-FSM. OTHER ISOLATED STRONG STORMS BEGINNING TO FIRE IN WEAKLY CAPPED AIR OVER NW ARKANSAS WHERE SOME ISOLATION HAS OCCURRED. THE MID LEVEL FEATURE WILL CONTINUE TO MOVE SLOWLY SE AND FOCUS HIGHER POPS TONIGHT ACROSS SOUTHERN AREAS. RADAR ESTIMATES UPWARDS OF 4 INCHES IN A NARROW BAND FROM SOUTHERN PITTSBURG AND PUSHMATAHA COUNTIES AND THUS A LIMITED FLOODING THREAT WILL CONTINUE TONIGHT DOWN THERE. OTHER STORMS DEVELOPING ACROSS CENTRAL KANSAS ALONG AN APPARENT BOUNDARY MAY MAKE A RUN AT NORTHERN AREAS THIS EVENING. THE OVERALL PRECIP FORECAST WILL REMAIN PROBLEMATIC FOR SEVERAL DAYS AS THE OVERALL PATTERN OF CYCLONIC NORTHWEST FLOW CONTINUES UNTIL AT LEAST THE END OF THIS WEEK IF NOT LONGER. WILL NEED TO KEEP AN EYE ON WAVE CURRENTLY NEAR THE YELLOWSTONE PLATEAU... MODEL CONSENSUS REMAINS TO ABSORB THIS WAVE INTO THE MEAN UPPER TROUGH OVER THE GREAT LAKES...HOWEVER A MORE SOUTHERN TRACK COULD BRING HIGHER CHANCE ESPECIALLY IN NORTHERN AREAS TUE NIGHT. THE MOST CONSISTENT SIGNAL REMAINS FOR ANOTHER MID LEVEL WAVE TO MOVE NEAR THE AREA WED NIGHT WITH STRENGTHENING LOW LEVEL JET...PLUS A COLD FRONT TO DROP SOUTH ACROSS THE AREA THURSDAY. THIS LOOKS TO BE THE HIGHEST RAIN CHANCE ALONG WITH A POTENTIAL SIGNIFICANT PRECIP EVENT...LOCATION OF WHICH REMAINS TO BE SEEN. STRONG FRONTAL PUSH FOR THE TIME OF YEAR WILL RESULT IN SIGNIFICANTLY BELOW NORMAL LOW TEMPS BY FRIDAY MORNING. UNCERTAINTY REMAINS ON THE PATTERN EVOLUTION LATE IN THE PERIOD WITH THE ECMWF AND GFS REMAINING SIGNIFICANTLY OUT OF PHASE. WILL CONTINUE WITH A MIDDLE OF THE ROAD SOLUTION FOR NOW WITH CONTINUED PRECIP CHANCES THROUGH MONDAY WITH A WARMING TREND...LESS SO THAN THE GFS WHICH SHOWS STRONG RIDGING ALOFT OVER THE AREA NEXT WEEK. && .PRELIMINARY POINT TEMPS/POPS... TUL 68 88 69 89 / 20 40 40 20 FSM 68 86 70 89 / 50 50 40 40 MLC 69 87 70 90 / 60 40 20 30 BVO 66 85 64 88 / 20 50 40 20 FYV 65 83 64 84 / 30 50 50 40 BYV 65 82 64 82 / 20 60 50 30 MKO 66 85 68 86 / 30 40 30 30 MIO 67 84 65 86 / 20 60 50 20 F10 67 86 68 88 / 40 30 30 30 HHW 70 88 70 90 / 80 60 20 30 && .TSA WATCHES/WARNINGS/ADVISORIES... OK...NONE. AR...NONE. && SHORT TERM...07 LONG TERM....14
HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE TULSA OK 459 PM CDT MON JUL 27 2009 ARZ001-002-010-011-019-020-029-OKZ049-053>076-281000- ADAIR OK-BENTON AR-CARROLL AR-CHEROKEE OK-CHOCTAW OK-CRAIG OK- CRAWFORD AR-CREEK OK-DELAWARE OK-FRANKLIN AR-HASKELL OK-LATIMER OK- LE FLORE OK-MADISON AR-MAYES OK-MCINTOSH OK-MUSKOGEE OK-NOWATA OK- OKFUSKEE OK-OKMULGEE OK-OSAGE OK-OTTAWA OK-PAWNEE OK-PITTSBURG OK- PUSHMATAHA OK-ROGERS OK-SEBASTIAN AR-SEQUOYAH OK-TULSA OK-WAGONER OK- WASHINGTON OK-WASHINGTON AR- 500 PM CDT MON JUL 27 2009 ...THUNDERSTORM CHANCES CONTINUE DAILY THROUGH THE UPCOMING WEEK... THIS OUTLOOK IS FOR NORTHWEST AND WEST CENTRAL ARKANSAS AS WELL AS MUCH OF EASTERN OKLAHOMA. .DAY ONE...THIS EVENING AND TONIGHT. SEVERE THUNDERSTORM. RISK...LIMITED. AREA...NORTHEAST OKLAHOMA AND FAR NORTHWEST ARKANSAS. ONSET...ONGOING. FLASH FLOOD. RISK...LIMITED. AREA...FAR SOUTHEAST OKLAHOMA. ONSET...ONGOING. HEAVY RAIN. RISK...LIMITED. AREA...SOUTHEAST OKLAHOMA. ONSET...ONGOING. DISCUSSION... ISOLATED SEVERE THUNDERSTORMS ARE POSSIBLE THROUGH THE EARLY EVENING HOURS OVER NORTHEAST OKLAHOMA AND FAR NORTHWEST ARKANSAS WITH DAMAGING WINDS THE PRIMARY THREAT. ALSO...WIDESPREAD RAINS HAVE OCCURRED OVER SOUTHEAST OKLAHOMA TODAY...WITH ADDITIONAL SHOWERS AND THUNDERSTORMS TO MOVE ACROSS THE AREA THROUGH THE EVENING HOURS. LOCALLY HEAVY RAINS HAVE OCCURRED WITH THIS ACTIVITY...ESPECIALLY OVER PITTSBURGH AND PUSHMATAHA COUNTY AND THE ADDITIONAL RAINFALL WILL LEAD TO A LIMITED RISK OF FLASH FLOODING. SPOTTER AND EMERGENCY MANAGEMENT ACTION STATEMENT... LOCAL SPOTTER ACTIVATION MAY BE NEEDED ACROSS NORTHEAST OKLAHOMA AND FAR NORTHWEST ARKANSAS THROUGH EARLY EVENING. .DAYS TWO THROUGH SEVEN...TUESDAY THROUGH SUNDAY. TUESDAY...THUNDERSTORM POTENTIAL. WEDNESDAY...THUNDERSTORM POTENTIAL...HEAVY RAIN POTENTIAL. THURSDAY...SEVERE THUNDERSTORM POTENTIAL. FRIDAY THROUGH SUNDAY...THUNDERSTORM POTENTIAL. EXTENDED DISCUSSION... THUNDERSTORM CHANCES WILL CONTINUE DAILY THROUGH THE UPCOMING WEEK AS THE WEATHER PATTERN REMAINS ACTIVE WITH PERIODIC FRONTAL PASSAGES. CURRENTLY...THE HIGHEST RISK OF STRONG TO SEVERE THUNDERSTORMS ALONG WITH HEAVY RAIN POTENTIAL APPEARS FOR WEDNESDAY AND THURSDAY. WWW.SRH.NOAA.GOV/TULSA CONTAINS ADDITIONAL INFORMATION.
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE TULSA OK
303 PM CDT MON JUL 27 2009
ARZ010-272030-
WASHINGTON AR-
303 PM CDT MON JUL 27 2009
...SIGNIFICANT WEATHER ALERT...
THE NATIONAL WEATHER SERVICE IN TULSA HAS ISSUED A
SIGNIFICANT WEATHER ALERT EFFECTIVE UNTIL 330 PM CDT
FOR THE FOLLOWING COUNTY...
IN NORTHWEST ARKANSAS
NORTHEASTERN WASHINGTON
AT 303 PM CDT...DOPPLER RADAR INDICATED A STRONG THUNDERSTORM 4 MILES
SOUTH OF SONORA...MOVING NORTH AT 10 MPH. SOME LOCATIONS THAT WILL BE
AFFECTED BY THIS STORM INCLUDE...SHADY GROVE...MAYFIELD...
SPRINGDALE...GOSHEN AND SONORA.
THIS STORM WILL BE CAPABLE OF PRODUCING WIND GUSTS TO 50 MPH.
LAT...LON 3620 9417 3621 9390 3603 9399 3604 9414
TIME...MOT...LOC 2003Z 185DEG 7KT 3612 9406SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE TULSA OK
337 PM CDT MON JUL 27 2009
OKZ063-068-069-272100-
ADAIR OK-CHEROKEE OK-DELAWARE OK-
337 PM CDT MON JUL 27 2009
...SIGNIFICANT WEATHER ALERT...
THE NATIONAL WEATHER SERVICE IN TULSA HAS ISSUED A
SIGNIFICANT WEATHER ALERT EFFECTIVE UNTIL 400 PM CDT
FOR THE FOLLOWING COUNTIES...
IN NORTHEAST OKLAHOMA
SOUTHERN DELAWARE AND NORTHWESTERN ADAIR
IN EAST CENTRAL OKLAHOMA
NORTHEASTERN CHEROKEE
AT 337 PM CDT...DOPPLER RADAR INDICATED A STRONG THUNDERSTORM 6 MILES
EAST OF SCRAPER...MOVING NORTH AT 10 MPH. SOME LOCATIONS THAT WILL BE
AFFECTED BY THIS STORM INCLUDE...SCRAPER.
THIS STORM WILL BE CAPABLE OF PRODUCING WIND GUSTS TO 50 MPH.
LAT...LON 3620 9484 3616 9457 3596 9466 3598 9488
TIME...MOT...LOC 2037Z 195DEG 10KT 3607 9475SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE TULSA OK
348 PM CDT MON JUL 27 2009
ARZ001-010-272115-
BENTON AR-WASHINGTON AR-
348 PM CDT MON JUL 27 2009
...SIGNIFICANT WEATHER ALERT...
THE NATIONAL WEATHER SERVICE IN TULSA HAS ISSUED A
SIGNIFICANT WEATHER ALERT EFFECTIVE UNTIL 415 PM CDT
FOR THE FOLLOWING COUNTIES...
IN NORTHWEST ARKANSAS
NORTHEASTERN WASHINGTON AND CENTRAL BENTON
AT 349 PM CDT...DOPPLER RADAR INDICATED A STRONG THUNDERSTORM 4 MILES
NORTHEAST OF SPRINGDALE...MOVING NORTH AT 5 MPH. SOME LOCATIONS THAT
WILL BE AFFECTED BY THIS STORM INCLUDE...SHADY GROVE...LOWELL...MONTE
NE...SPRINGDALE...JOHNSON AND SONORA.
THIS STORM WILL BE CAPABLE OF PRODUCING WIND GUSTS TO 50 MPH.
LAT...LON 3629 9420 3631 9395 3612 9397 3613 9418
TIME...MOT...LOC 2049Z 183DEG 4KT 3622 9408SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE TULSA OK
445 PM CDT MON JUL 27 2009
OKZ063-272215-
DELAWARE OK-
445 PM CDT MON JUL 27 2009
...SIGNIFICANT WEATHER ALERT...
THE NATIONAL WEATHER SERVICE IN TULSA HAS ISSUED A
SIGNIFICANT WEATHER ALERT EFFECTIVE UNTIL 515 PM CDT
FOR THE FOLLOWING COUNTY...
IN NORTHEAST OKLAHOMA
SOUTHERN DELAWARE
AT 446 PM CDT...DOPPLER RADAR INDICATED A STRONG THUNDERSTORM 5 MILES
NORTH OF KANSAS...MOVING NORTHWEST AT 10 MPH. SOME LOCATIONS THAT
WILL BE AFFECTED BY THIS STORM INCLUDE...TWIN OAKS...KANSAS AND
COLCORD.
THIS STORM WILL BE CAPABLE OF PRODUCING WIND GUSTS TO 40 MPH.
LAT...LON 3622 9466 3617 9484 3617 9487 3633 9497
3641 9477
TIME...MOT...LOC 2146Z 157DEG 10KT 3627 9481SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE TULSA OK
515 PM CDT MON JUL 27 2009
ARZ010-272245-
WASHINGTON AR-
515 PM CDT MON JUL 27 2009
...SIGNIFICANT WEATHER ALERT...
THE NATIONAL WEATHER SERVICE IN TULSA HAS ISSUED A
SIGNIFICANT WEATHER ALERT EFFECTIVE UNTIL 545 PM CDT
FOR THE FOLLOWING COUNTY...
IN NORTHWEST ARKANSAS
CENTRAL WASHINGTON
AT 516 PM CDT...DOPPLER RADAR INDICATED A STRONG THUNDERSTORM OVER
WEST FORK...MOVING NORTH AT 10 MPH. SOME LOCATIONS THAT WILL BE
AFFECTED BY THIS STORM INCLUDE...WALNUT GROVE...WEST FORK...PRAIRIE
GROVE...HOGEYE...WOOLSEY AND GREENLAND.
THIS STORM WILL BE CAPABLE OF PRODUCING WIND GUSTS TO 40 MPH.
LAT...LON 3600 9433 3605 9414 3589 9406 3584 9427
TIME...MOT...LOC 2216Z 164DEG 9KT 3595 9419SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE TULSA OK
533 PM CDT MON JUL 27 2009
ARZ001-002-272300-
BENTON AR-CARROLL AR-
533 PM CDT MON JUL 27 2009
...SIGNIFICANT WEATHER ALERT...
THE NATIONAL WEATHER SERVICE IN TULSA HAS ISSUED A
SIGNIFICANT WEATHER ALERT EFFECTIVE UNTIL 600 PM CDT
FOR THE FOLLOWING COUNTIES...
IN NORTHWEST ARKANSAS
NORTHWESTERN CARROLL AND NORTHEASTERN BENTON
AT 533 PM CDT...DOPPLER RADAR INDICATED A STRONG THUNDERSTORM OVER
BEAVER LAKE...MOVING NORTH AT 10 MPH. SOME LOCATIONS THAT WILL BE
AFFECTED BY THIS STORM INCLUDE...WALNUT HILL...BLAND...HILL TOP...
GATEWAY...LARUE...GARFIELD...BEAVER LAKE...BUSCH AND BEAVER.
THIS STORM WILL BE CAPABLE OF PRODUCING WIND GUSTS TO 40 MPH.
LAT...LON 3630 9375 3630 9400 3649 9401 3650 9376
TIME...MOT...LOC 2233Z 180DEG 7KT 3639 9388The Western Arkansas radar (KSRX), 83 km away, was scanning. The volume nearest the first event began at 22:41 UTC.
1 thunderstorm wind. Local standard time, as filed.
Thunderstorm winds estimated at 60 miles an hour blew down a large tree limb.
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in Arkansas in 2009Every state in 2009This day in weather historyWarnings in Arkansas, July 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: 188744.