4 thunderstorm wind, as filed by the National Weather Service.
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 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 Aug 10, 2:44 PM CST, 26 minutes earlier.
AREA FORECAST DISCUSSION NATIONAL WEATHER SERVICE NORMAN OKLAHOMA 344 PM CDT SUN AUG 10 2003 CONVECTION OVER NE OK SHOULD CONTINUE TO ROLL SE TONIGHT. ASSOCIATED OUTFLOW BOUNDARY WILL CONTINUE TO PUSH SW INTO NW/CENTRAL/SCENTRAL OK AND MAY FOCUS ADDITIONAL DEVELOPMENT THIS EVENING. THIS BOUNDARY MAY LINGER INTO MON. ALSO INDICATIONS THAT ANOTHER MCS WILL ORGANIZE OVER IA THIS AFTERNOON/EVENING AND DROP S OR PERHAPS SSW...THUS POSSIBLY AFFECTING E PART OF AREA LATE TONIGHT INTO MON. HIGHEST POPS ACROSS E HALF OF CWA TONIGHT AND MON. WILL CONTINUE TO BROADBRUSH AREA W/LOW POPS MON NIGHT THRU TUE NIGHT AS UPPER FLOW BEGINS TO VEER TO MORE NE IN RESPONSE TO CLOSED LOW DEVELOPMENT OVER MID MS VALLEY AREA. MED RANGE MODELS NOW IN BETTER AGREEMENT THAT THIS LOW WILL DROP SW INTO S PLAINS BY MIDWEEK. CONFIDENCE HAS INCREASED ENOUGH TO RAISE POPS TO 30-40 PCT RANGE WED INTO THU...WITH HIGHER POPS NEAR AND E OF THE LOW WHERE FORCING AND MID-LEVEL MOISTURE TYPICALLY ARE MORE FAVORABLE IN ASSOCIATION WITH RETROGRADING SYSTEMS OF THIS TYPE. FORECAST BECOMES MORE PROBLEMATIC LATE IN WEEK DUE TO UNCERTAINTIES REGARDING WHAT THIS SYSTEM WILL DO ONCE IT REACHES THE TX/OK AREA. 12Z GFS HAS TAKEN OFF IN A WHOLE NEW DIRECTION - WEST - AS IT DEPARTS FROM ALL OTHER MED-RANGE MODELS AND KEEPS THE SYSTEM ROLLING W ALL THE WAY INTO AZ BY FRI MORNING. THIS SOLUTION WOULD HAVE MERIT IF THE UPPER HIGH OVER MT INDEED WERE TO BUILD TO 602 DM. AT THIS POINT WE ARE HIGHLY SKEPTICAL OF BOTH THE 602 HIGH AND THE CONTINUED RETROGRESSION...DUE IN NO SMALL PART TO THE RADICAL DEPARTURE OF THIS SOLUTION FROM ALL OTHER MODELS... INCLUDING PRIOR GFS RUNS. THUS WE ARE LEANING TOWARD THE CONSENSUS OF THE OTHER MODELS...WHICH IS TO STALL THE SYSTEM OVER THE CENTRAL/S HIGH PLAINS THU AND EJECT IT BACK E OF THE AREA BY SAT. THUS WILL CONTINUE WITH A DECREASING TREND IN POPS INTO FRI...AND KEEP SAT-SUN DRY. TEMPS SHOULD TREND DECIDEDLY TOWARD THE COOL SIDE FOR MID AUGUST AS A RATHER SIZEABLE SURFACE RIDGE BUILDS S/SW INTO THE CENTRAL/S PLAINS. N-NE FLOW THRU A DEEP LAYER WILL RESULT IN RELATIVELY COOL AND DRY CONDITIONS...TRENDING TOWARD COOL AND MORE MOIST BY MID-LATE WEEK AS LOW AND MID-LEVEL FLOW ABOVE BOUNDARY LAYER VEERS TO MORE E/SE. CLOUD COVER ALSO LIKELY TO CONTRIBUTE TO LOWER DAYTIME TEMPS...ESPECIALLY INTO WED-THU AS UPPER LOW MOVES INTO THE AREA. TRENDING TEMPS BACK UP CLOSER TO CLIMO SAT-SUN. OKC 70 89 67 88 / 40 30 20 20 HBR 70 91 66 90 / 30 30 20 20 SPS 72 91 69 91 / 30 30 20 20 GAG 65 89 61 88 / 20 20 20 20 PNC 70 89 64 88 / 40 30 20 20 DUA 72 88 67 89 / 40 30 20 20 FORECAST ID = 24 .OUN... OK...NONE. TX...NONE.
OKZ004>048-050>052-TXZ083>090-111200-
HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE NORMAN OK
1155 AM CDT SUN AUG 10 2003
THIS HAZARDOUS WEATHER OUTLOOK COVERS NORTHERN...WESTERN...
CENTRAL...AND SOUTHERN OKLAHOMA...AND WESTERN NORTH TEXAS.
.DAY ONE...THIS AFTERNOON AND TONIGHT...
THUNDERSTORM OUTLOOK...
THERE IS A SLIGHT RISK OF SEVERE THUNDERSTORMS FROM MID EVENING
THROUGH THE OVERNIGHT HOURS ACROSS PORTIONS OF OKLAHOMA. NO SEVERE
WEATHER IS EXPECTED OVER WESTERN NORTH TEXAS.
LOCATION...
THE SLIGHT RISK AREA COVERS LOCATIONS EAST OF A LINE EXTENDING FROM
CHEROKEE...TO YUKON...TO ARDMORE AND TISHOMINGO.
TIMING...
THE MOST LIKELY TIME FOR SEVERE THUNDERSTORMS WILL BE FROM THIS
EVENING THROUGH EARLY MONDAY MORNING.
RECOMMENDED ACTIONS...
STORM SPOTTER GROUPS AND EMERGENCY MANAGEMENT PERSONNEL ACROSS THE
RISK AREA SHOULD PLAN FOR THE POSSIBILITY OF SEVERE WEATHER
OPERATIONS FROM THIS EVENING UNTIL EARLY MONDAY MORNING.
DISCUSSION...
SHOWERS AND THUNDERSTORMS HAVE DEVELOPED EARLY THIS AFTERNOON ACROSS
SOUTHEASTERN KANSAS INTO FAR NORTHEAST OKLAHOMA. OUTFLOW FROM THESE
STORMS COULD MOVE INTO PORTIONS OF NORTH CENTRAL OKLAHOMA THIS
AFTERNOON PROVIDING A FOCUS FOR ADDITIONAL THUNDERSTORM DEVELOPMENT.
ANY THUNDERSTORMS THAT DEVELOP ACROSS NORTH CENTRAL OKLAHOMA WOULD
THEN MOVE SOUTH AFFECTING PORTIONS OF CENTRAL OKLAHOMA LATE THIS
AFTERNOON. NO SEVERE WEATHER IS EXPECTED WITH ANY THUNDERSTORMS THAT
DEVELOP ACROSS THE AREA THIS AFTERNOON.
HOWEVER...THE ANTICIPATED THUNDERSTORM ACTIVITY THAT COULD BRING A
ROUND OF SEVERE WEATHER TO THE REGION IS MOST LIKELY TO OCCUR FROM
MID EVENING THROUGH THE OVERNIGHT HOURS. THESE STORMS WOULD DEVELOP
NORTH OF OKLAHOMA... ORGANIZE INTO A COMPLEX OF STRONG TO SEVERE
STORMS...AND MOVE SOUTH ACROSS PORTIONS OF CENTRAL AND EASTERN
OKLAHOMA LATE THIS EVENING AND OVERNIGHT. THE MAIN IMPACT FROM ANY
SEVERE THUNDERSTORMS IS EXPECTED TO BE DAMAGING WINDS
GUSTS...POSSIBLY AS HIGH AS 70 MPH.
PROBABILITY TABLE...
VALID THROUGH 700 AM CDT MONDAY AUG 11.
PROBABILITY OF THUNDERSTORMS OCCURRING IN THE
NWS NORMAN COUNTY WARNING AREA...60 PERCENT.
PROBABILITY OF SEVERE STORMS IF STORMS OCCUR...30 PERCENT.
OTHER HAZARDOUS WEATHER...
ASIDE FROM THE SEVERE WEATHER DANGER...NO OTHER HAZARDOUS WEATHER IS
EXPECTED THROUGH TONIGHT.
.DAYS TWO THROUGH SEVEN...MONDAY THROUGH SATURDAY...
THUNDERSTORM OUTLOOK...
THERE WILL BE A CHANCE OF MAINLY AFTERNOON AND EVENING THUNDERSTORMS
THROUGH FRIDAY AS AN UPPER LEVEL STORM SYSTEM MOVES SLOWLY OVER THE
REGION.
OTHER HAZARDOUS WEATHER...
NONE.
THE NEXT SCHEDULED HAZARDOUS WEATHER OUTLOOK WILL BE ISSUED AT 7 AM
MONDAY.
30OKZ025-026-030-102100- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE NORMAN OK 349 PM CDT SUN AUG 10 2003 ...SIGNIFICANT WEATHER ADVISORY... THIS SIGNIFICANT WEATHER ADVISORY IS FOR LINCOLN...OKLAHOMA AND POTTAWATOMIE COUNTIES. A STRONG THUNDERSTORM WAS LOCATED 9 MILES NORTHEAST OF HARRAH AT 349 PM CDT...MOVING SOUTH AT 30 MPH. WIND GUST OF 50 MPH WILL BE POSSIBLE WITH THIS STORM.
The Norman radar (KTLX), 26 km away, was scanning. The volume nearest the first event began at 21:08 UTC.
4 thunderstorm wind. Local standard time, as filed.
Three inch diameter tree limbs were downed on Hiwassee Road.
Wind was reported on southeast side of Lake Thunderbird, one mile south of Little Axe. A man drowned (indirectly related) when the wind blew his boat away from the shore onto the lake. The man tried to retrieve the boat, but was killed in the process.
Tree limbs ranging from four to eight inches in diameter were downed at Northeast 108th Avenue and Alameda Drive and Northeast 120th Avenue and Franklin Road. A nine inch diameter tree also snapped near Northeast 84th Avenue and Franklin Road.
Numerous ten inch diameter tree limbs were downed along with a seven inch diameter tree uprooted. A greenhouse, some fences, and a few roofs were also damaged.
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in Oklahoma in 2003Every state in 2003This day in weather historyWarnings in Oklahoma, August 2003
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: 5334745, 5334746, 5334747, 5334966.