Precipitation over most of Oklahoma was relatively plentiful during the first half of the month over northern and central sections of the state. This was followed by drier conditions to end the month.
Every event with a place to put it; 33 filed by county or forecast zone are drawn at its center, in a lighter ring. 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.
Precipitation over most of Oklahoma was relatively plentiful during the first half of the month over northern and central sections of the state. This was followed by drier conditions to end the month. Ultimately, drought conditions improved slightly over the northern two-thirds of the state, while holding to slightly worsening over the southern tier of counties.
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 Jul 31, 10:47 PM CST, 1 hour 13 minutes earlier.
AREA FORECAST DISCUSSION NATIONAL WEATHER SERVICE NORMAN OK 1147 PM CDT WED JUL 31 2013 .DISCUSSION... THE 06Z AVIATION DISCUSSION FOLLOWS.... && .AVIATION... A LARGE AREA OF TSRA CONTINUES TO CHURN OVER W TX AND THE FAR W OK PANHANDLE. HIGH CLOUDS WILL STREAM E FROM THIS REGION THROUGH MUCH OF THE NIGHT. THIS SHOULD REDUCE THE LIKELIHOOD OF BR/FG...ALTHOUGH KPNC WILL BE MORE ON THE FRINGE...AND MAY SEE A BRIEF PERIOD OF MVFR VISIBILITY AROUND SUNRISE. MODELS SHOW A BATCH OF LOW-LEVEL MOISTURE ACROSS S AND CENTRAL OK/N TX EARLY THURSDAY...WHICH MAY MATERIALIZE AS SC AT ABOUT 2500 FT AGL IN THE MORNING. A FEW TSRA MAY OCCUR OVER NW OK THURSDAY AFTERNOON...AS THE ENVIRONMENT WILL CHANGE VERY LITTLE THROUGH THE PERIOD. && .PREV DISCUSSION... /ISSUED 933 PM CDT WED JUL 31 2013/ DISCUSSION... LIGHT RAIN IS ALL THAT IS LEFT FROM EARLIER THUNDERSTORMS IN SOUTWHEST KS. THIS WILL MOVE ACROSS PART OF NW OK THROUGH ABOUT MIDNIGHT OR SO, BUT PRODUCE NOT MUCH RAINFALL. OTHER PARTS OF THE FORECAST REMAIN UNCHANGED FROM EARLIER. && .PRELIMINARY POINT TEMPS/POPS... OKLAHOMA CITY OK 72 93 75 96 / 10 0 10 10 HOBART OK 73 97 75 102 / 10 10 10 10 WICHITA FALLS TX 76 99 77 102 / 10 10 10 0 GAGE OK 69 94 72 99 / 30 20 20 10 PONCA CITY OK 70 91 74 92 / 10 0 20 30 DURANT OK 76 97 77 97 / 10 0 0 10 && .OUN WATCHES/WARNINGS/ADVISORIES... OK...NONE. TX...NONE. && 09/23/23
HAZARDOUS WEATHER OUTLOOK...UPDATED
NATIONAL WEATHER SERVICE NORMAN OK
1120 PM CDT WED JUL 31 2013
OKZ004>048-050>052-TXZ083>090-011000-
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-
1120 PM CDT WED JUL 31 2013
THIS HAZARDOUS WEATHER OUTLOOK COVERS NORTHERN...WESTERN...
CENTRAL...AND SOUTHERN OKLAHOMA...AND WESTERN NORTH TEXAS.
.DAY ONE...REST OF TONIGHT...
THUNDERSTORM OUTLOOK...
THERE IS A LOW CHANCE FOR THUNDERSTORMS ACROSS FAR NORTHWESTERN
OKLAHOMA THROUGH 3 AM THURSDAY MORNING. NO STRONG OR SEVERE
STORMS ARE EXPECTED.
DISCUSSION...
THERE IS A LOW CHANCE ONE OR TWO STORMS MAY DEVELOP OVER NORTHWESTERN
OKLAHOMA THROUGH 3 AM THURSDAY MORNING. DUE TO WEAK INSTABILITY AND
SHEAR...NO STRONG OR SEVERE STORMS ARE EXPECTED. STRONG CAPPING
WILL PREVENT STORM DEVELOPMENT ACROSS MUCH OF THE AREA FOR THE
REST OF TONIGHT.
PROBABILITY TABLE...
VALID THROUGH 700 AM CDT THURSDAY AUG 1.
PROBABILITY OF THUNDERSTORMS OCCURRING IN THE
NWS NORMAN COUNTY WARNING AREA...20 PERCENT.
PROBABILITY OF SEVERE STORMS IF STORMS OCCUR...5 PERCENT.
OTHER HAZARDOUS WEATHER...
NONE.
.DAYS TWO THROUGH SEVEN...THURSDAY THROUGH TUESDAY...
THUNDERSTORM OUTLOOK...
THUNDERSTORMS WILL BE POSSIBLE ACROSS FAR NORTHWESTERN OKLAHOMA
ON THURSDAY...THEN ACROSS MAINLY NORTHERN OKLAHOMA THURSDAY
NIGHT THROUGH TUESDAY. ALTHOUGH A FEW STRONG TO PERHAPS SEVERE
STORMS WITH LOCALLY HEAVY RAINFALL MAY OCCUR THURSDAY THROUGH
TUESDAY...CHANCES FOR WIDESPREAD SEVERE STORMS REMAIN LOW.
OTHER HAZARDOUS WEATHER...
HEAT INDICES MAY APPROACH 105 DEGREES IN SOME LOCATIONS DURING
THE AFTERNOON AND EARLY EVENING HOURS THURSDAY THROUGH TUESDAY
DUE TO HOT TEMPERATURES AND HIGH HUMIDITY. PERSONS SPENDING TIME
OUTDOORS ARE ENCOURAGED TO TAKE PRECAUTIONS FROM THE HEAT OVER
THE NEXT SEVERAL DAYS.
THE NEXT SCHEDULED HAZARDOUS WEATHER OUTLOOK WILL BE ISSUED BY
5 AM THURSDAY.
MBS/EMThe national radar mosaic for the moment the first event began.
33 drought. Local standard time, as filed.
D2 (severe) drought was present at the beginning of the month, but had improved to D0 (abnormally dry) by the end of the month.
No drought was present at the beginning of the month, but persistent dry conditions had allowed D0 (abnormally dry) drought to develop by the end of the month.
D3 (extreme) drought was present at the beginning of the month, but had improved slightly to D2 (severe) by the end of the month.
D1 (moderate) drought was present at the beginning of the month, but had improved slightly to D0 (abnormally dry) by the end of the month.
D1 (moderate) drought was present at the beginning of the month, but had worsened slightly to D2 (severe) drought by the end of the month with persistent dry conditions.
D0 (abnormally dry) drought continued through the month with persistent dry conditions.
No drought was present at the beginning of the month, but persistent dry conditions had allowed D0 (abnormally dry) drought to develop by the end of the month.
No drought was present at the beginning of the month, but persistent dry conditions had allowed D0 (abnormally dry) drought to develop by the end of the month.
D1 (moderate) drought continued through the month with persistent dry conditions.
D2 (severe) drought continued through the month with persistent dry conditions.
D2 (severe) drought continued through the month with persistent dry conditions.
D2 (severe) drought was present at the beginning of the month, but had improved slightly to D1 (moderate) by the end of the month.
D3 (extreme) drought was present at the beginning of the month, but had improved to D1 (moderate) by the end of the month.
No drought was present at the beginning of the month, but persistent dry conditions had allowed D0 (abnormally dry) drought to develop by the end of the month.
D2 (severe) drought was present at the beginning of the month, but had improved to D0 (abnormally dry) by the end of the month.
D3 (extreme) drought continued with persistent dry conditions.
D3 (extreme) drought continued with persistent dry conditions.
D3 (extreme) drought was present at the beginning of the month, but had improved to D1 (moderate) by the end of the month.
D3 (extreme) drought continued with persistent dry conditions.
D0 (abnormally dry) drought continued through the month with persistent dry conditions.
D0 (abnormally dry) drought was present at the beginning of the month, but persistent dry conditions had allowed D1 (moderate) drought to develop by the end of the month.
D0 (abnormally dry) drought continued through the month with persistent dry conditions.
D2 (severe) drought continued through the month with persistent dry conditions.
D0 (abnormally dry) drought continued through the month with persistent dry conditions.
D2 (severe) drought was present at the beginning of the month, but had improved slightly to D1 (moderate) by the end of the month.
D0 (abnormally dry) drought was present at the beginning of the month, but persistent dry conditions had allowed D1 (moderate) drought to develop by the end of the month.
No drought was present at the beginning of the month, but persistent dry conditions had allowed D0 (abnormally dry) drought to develop by the end of the month.
D3 (extreme) drought was present at the beginning of the month, but had improved slightly to D2 (severe) by the end of the month.
D0 (abnormally dry) drought continued through the month with persistent dry conditions.
D3 (extreme) drought continued through the month with persistent dry conditions.
D2 (severe) drought continued through the month with persistent dry conditions.
D2 (severe) drought was present at the beginning of the month, but had improved to D0 (abnormally dry) by the end of the month.
D3 (extreme) drought was present at the beginning of the month, but had improved to D1 (moderate) drought by the end of the month.
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in Oklahoma in 2013Every state in 2013This day in weather historyWarnings in Oklahoma, August 2013
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: 466288, 466289, 466290, 466291, 466292, 466293, 466294, 466295, 466296, 466297, 466298, 466303, 466304, 466305, 466306, 466307, 466308, 466309, 466310, 466314, 466316, 466317, 466319, 466320, 466323, 466324, 466325, 466327, 466328, 466330, 466332, 466333, 466334.