1 flood, as filed by the National Weather Service.
Every event with a place to put it; 1 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 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 Sep 18, 3:20 AM CST, 2 hours 40 minutes earlier.
AREA FORECAST DISCUSSION NATIONAL WEATHER SERVICE NORMAN OK 420 AM CDT TUE SEP 18 2001 RUNNING KIND OF LATE THIS MORNING DUE PARTLY TO THE STORMS AND PARTLY DUE TO IFPS MISBEHAVING. ZFP SHOULD BE OUT WITHIN 10 MINUTES OF SCHEDULE. MOST OF THE DIFFICULTY OF THE FORECAST IS IN THE FIRST TWO PERIODS. MODELS AND SPC SEEM TO SUGGEST THAT THE SOUTHEAST 1/2 TO 2/3 OF OUR FORECAST AREA WILL BE THE TARGET OF ANOTHER CONVECTIVE OUTBREAK THIS AFTERNOON AND EVENING. THE CURRENT CONVECTIVE COMPLEX SHOULD PASS ON INTO EASTERN OKLAHOMA THIS MORNING... LEAVING SCATTERED SHOWERS AND THUNDERSTORMS IN ITS WAKE OVER PART OF OUR AREA. MEANWHILE... AN ADVANCING COLD FRONT IS FORECAST TO LIE FROM APPROXIMATELY THE NORTHEAST CORNER TO THE SOUTHWEST CORNER OF OUR FORECAST AREA EARLY THIS AFTERNOON. THIS SHOULD PROVIDE SUFFICIENT LOW-LEVEL CONVERGENCE TO OVERCOME ANY MID-LEVEL CAP THAT WILL BE IN PLACE IN OUR SOUTHERN ZONES. THUNDERSTORMS ARE MOST LIKELY TO INITIATE IN THE AREA FROM WICHITA FALLS TO OKLAHOMA CITY TO POSSIBLY PONCA CITY... DEPENDING ON THE FATE OF THE MORNING CONVECTION. THIS SHOULD THEN DEVELOP INTO A SIMILAR GLOB OF STORMS AND PRESS SOUTHEAST THIS EVENING AND OVERNIGHT. THE RISK OF SEVERE STORMS SEEMS TO BE HIGH ENOUGH TO WARRANT MENTION IN THE ZFP FOR ABOUT THE SOUTHEAST HALF OF THE F.A. AFTER THAT... GENERALLY CLEARING AND SOMEWHAT COOLER WEATHER WILL SETTLE IN. IT APPEARS THAT MOISTURE WILL NOT BE SCOURED OUT VERY WELL... SO WILL RAISE OVERNIGHT LOWS A BIT OVERALL TO ACCOUNT FOR THIS. SIMILARLY... IT APPEARS THAT THE INCOMING AIR WILL BE A LITTLE TOO COOL TO SUPPORT SOME OF THE HIGHS WE HAD IN THE PREVIOUS PACKAGE. THERE WILL BE ANOTHER CHANCE OF CONVECTION THIS WEEKEND. HAVE LEFT THE FORECAST MOSTLY AS-WAS BEYOND THURSDAY SINCE THE GUIDANCE SEEMS TO STILL BE IN GOOD AGREEMENT WITH THE GOING FORECAST... WITH ONE MINOR EXCEPTION.... A QUICK GLANCE AT THE NEW MRF SUGGESTS THAT WE MIGHT NEED TO TRIM BACK THE HIGHS FOR MONDAY AS A RATHER COLD AIRMASS FROM CANADA IS FORECAST TO EXPAND SOUTHWEST INTO OUR AREA. WILL LEAVE THAT DECISION FOR THE DAY SHIFT AS MORE MEDIUM-RANGE DATA BECOMES AVAILABLE. IF THE RISK OF HEAVY RAIN LOOKS SIGNIFICANT THIS EVENING OVER OUR SOUTH-CENTRAL ZONES... A FLASH FLOOD WATCH MAY BE NEEDED THERE. WILL NOT ISSUE ONE AT THIS POINT BECAUSE IT APPEARS THAT STORMS SHOULD MOVE FAST ENOUGH TO PREVENT MAJOR ACCUMULATION. FCSTID = 23 = CMS OKC 82 64 82 61 / 90 60 10 10 HBR 85 62 84 60 / 60 30 10 10 SPS 88 65 86 62 / 60 60 10 10 GAG 80 58 83 55 / 60 30 10 10 PNC 80 61 82 58 / 80 50 10 10 DUA 87 65 85 64 / 60 80 20 10 .OUN... OK...NONE. TX...NONE.
OKZ004>048-050>052-TXZ083>090-181400- HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE NORMAN OK 655 AM CDT TUE SEP 18 2001 THERE IS A SLIGHT RISK OF SEVERE THUNDERSTORMS MAINLY THIS AFTERNOON AND EVENING ACROSS PORTIONS OF CENTRAL AND SOUTHEAST OKLAHOMA AND PORTIONS OF NORTH TEXAS...EAST OF A LINE FROM BLACKWELL...TO WEATHERFORD...TO FREDERICK...TO SEYMOUR TEXAS. THE PRIMARY SEVERE WEATHER THREATS WILL BE LARGE HAIL AND DAMAGING WINDS. A WEAK COLD FRONT MOVING THROUGH NORTHWEST OKLAHOMA THIS MORNING WILL ADVANCE SOUTHEAST DURING THE DAY...AND LIE FROM NORTHCENTRAL OKLAHOMA INTO WESTERN SECTIONS OF NORTH TEXAS BY LATE AFTERNOON. THIS FRONT...IN COMBINATION WITH OUTFLOW BOUNDARIES FROM THIS MORNINGS THUNDERSTORM ACTIVITY...WILL ACT TO FOCUS THUNDERSTORM DEVELOPMENT DURING THE AFTERNOON AND EVENING. STRENGTHENING WINDS THROUGH MUCH OF THE ATMOSPHERE WILL HELP TO ORGANIZE THE STORMS...WITH A FEW SUPERCELL THUNDERSTORMS POSSIBLE. ALTHOUGH ISOLATED TORNADOES CANNOT BE RULED OUT...THE PRIMARY SEVERE WEATHER THREATS ARE EXPECTED TO BE LARGE HAIL AND DAMAGING WIND. THE ATMOSPHERE REMAINS QUITE MOIST AND HEAVY RAINFALL LIKELY WILL ACCOMPANY THE STORMS...ESPECIALLY TONIGHT. EMERGENCY MANAGERS AND STORM SPOTTER GROUPS IN AND NEAR THE SLIGHT RISK AREA SHOULD BE PREPARED FOR POSSIBLE ACTIVATION THIS AFTERNOON AND TONIGHT. 16
The national radar mosaic for the moment the first event began.
1 flood. Local standard time, as filed.
A woman had to be rescued from high water when the vehicle she was driving stalled near Shore Drive in fast-moving water from recent heavy rain. In addition, a 30-foot section of Danforth Road, between Western and Pennsylvania, collapsed when a tinhorn broke loose and flowed downstream.
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in Oklahoma in 2001Every state in 2001This day in weather historyWarnings in Oklahoma, September 2001
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: 5263572.