Hazardous weather outlook, National Weather Service, Norman
PUBLIC INFORMATION STATEMENT
NATIONAL WEATHER SERVICE NORMAN OK
758 AM CDT WED JUN 5 2013
…UPDATE ON MAY 31 EL RENO TORNADO…
METEOROLOGISTS WITH THE NATIONAL WEATHER SERVICE AND RESEARCHERS FROM
THE UNIVERSITY OF OKLAHOMA AND THE CENTER FOR SEVERE WEATHER RESEARCH
CONTINUE TO INVESTIGATE INFORMATION RELATED TO THE MAY 31 EL RENO
TORNADO.
PLEASE NOTE: THESE DATA ARE PRELIMINARY AND NOT OFFICIAL. METEOROLOGISTS
CONTINUE TO COLLECT AND INVESTIGATE ADDITIONAL DATA.
WITH THIS INVESTIGATION… THE TORNADO HAS BEEN UPGRADED TO AN EF5
TORNADO BASED ON VELOCITY DATA FROM THE RESEARCH MOBILE RADAR DATA
FROM THE UNIVERSITY OF OKLAHOMA RAXPOL RADAR AND THE DOPPLER ON
WHEELS RADARS FROM THE CENTER FOR SEVERE WEATHER RESEARCH. IN
ADDITION… THE WIDTH OF TORNADO WAS MEASURED BY THE MOBILE RADAR
DATA TO BE 2.6 MILES AFTER THE TORNADO PASSED EAST OF US HIGHWAY 81
SOUTH OF EL RENO. THIS WIDTH IS THE WIDTH OF THE TORNADO ITSELF AND
DOES NOT INCLUDE THE DAMAGING STRAIGHT-LINE WINDS NEAR THE TORNADO AS
DETERMINED BY THE HIGH-RESOLUTION MOBILE RADAR DATA. THE 2.6 MILE
TORNADO PATH WIDTH IS BELIEVED TO BE THE WIDEST TORNADO ON RECORD
IN THE UNITED STATES.
.EL RENO TORNADO
RATING: EF5
PATH LENGTH /STATUTE/: 16.2 MILES
PATH WIDTH /MAXIMUM/: 2.6 MILES
FATALITIES: N/A
INJURIES: N/A
START DATE: MAY 31 2013
START TIME: 6:03 PM CDT
START LOCATION: 8.3 WSW OF EL RENO /CANADIAN COUNTY /OK
NEAR COURTNEY ROAD ABOUT 1 MILE NORTH
OF REUTER ROAD
START LAT/LON: 35.495 / -98.095
END DATE: MAY 31 2013
END TIME: 6:43 PM CDT
END LOCATION: 6.2 ESE OF EL RENO /CANADIAN COUNTY /OK
NEAR INTERSTATE 40 AND BANNER ROAD
END LAT/LON: 35.502 / -97.848
7-day rainfall totals recorded at Okahoma Mesonet weather network sites
Rainfall since midnight recorded at Oklahoma Mesonet weather network sites
Hazardous weather outlook, National Weather Service, Norman
HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE NORMAN OK
425 AM CDT WED JUN 5 2013
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-
WED JUN 5 2013
THIS HAZARDOUS WEATHER OUTLOOK COVERS NORTHERN…WESTERN…
CENTRAL…AND SOUTHERN OKLAHOMA…AND WESTERN NORTH TEXAS.
.DAY ONE…TODAY AND TONIGHT…
THUNDERSTORM OUTLOOK…
STRONG TO SEVERE STORMS WILL BE POSSIBLE ACROSS PORTIONS OF OKLAHOMA
AND WESTERN NORTH TEXAS THROUGH EARLY THURSDAY MORNING.
LOCATION…
THE SLIGHT RISK AREA IS ALONG AND SOUTH OF A LINE FROM STILLWATER AND
KINGFISHER… TO CHEYENNE OKLAHOMA. THIS INCLUDES ALL OF WESTERN NORTH
TEXAS.
IMPACTS…
THE STRONGEST STORMS WILL BE CAPABLE OF PRODUCING HAIL UP TO THE SIZE
OF GOLF BALLS…WIND GUSTS TO 70 MPH…AND HEAVY RAINFALL RESULTING
IN LOCALIZED FLOODING.
TIMING…
THE MOST LIKELY TIMES FOR SEVERE STORMS WILL BE THROUGH 8 AM THIS
MORNING AND THEN AGAIN AFTER 4 PM INTO EARLY THURSDAY MORNING.
RECOMMENDED ACTIONS…
STORM SPOTTER GROUPS AND EMERGENCY MANAGEMENT PERSONNEL ACROSS
THE RISK AREA SHOULD PREPARE FOR SEVERE WEATHER OPERATIONS TODAY AND
TONIGHT.
DISCUSSION…
THUNDERSTORMS WILL CONTINUE TO MOVE ACROSS PARTS OF OKLAHOMA THIS
MORNING. SOME OF THESE STORMS COULD BECOME SEVERE PRODUCING HAIL
UP TO THE SIZE OF QUARTERS AND WIND GUSTS TO 65 MPH. HEAVY RAIN
AND FREQUENT LIGHTNING WILL ALSO BE A CONCERN. THESE STORMS ARE
EXPECTED TO MOVE OUT OF THE AREA LATER THIS MORNING.
A COLD FRONT WILL MOVE ACROSS PARTS OF NORTHERN OKLAHOMA TODAY. THIS
FRONT AND/OR ANY OUTFLOW BOUNDARIES LEFT FROM THE MORNING STORMS COULD
BE THE FOCUS FOR ADDITIONAL THUNDERSTORMS TO DEVELOP LATE THIS AFTERNOON
AND EVENING. THIS SCENARIO IS SOMEWHAT UNCERTAIN AS IT DEPENDS ON HOW
QUICKLY THE AIRMASS CAN RECOVER FROM THE MORNING ACTIVITY. IF STORMS
CAN DEVELOP LATE THIS AFTERNOON AND EVENING THEN INSTABILITY AND SHEAR
SHOULD BE SUFFICIENT FOR SEVERE STORMS TO BE POSSIBLE. IF SEVERE STORMS
DO FORM… HAIL TO THE SIZE OF GOLF BALLS AND WIND GUSTS TO 70 MPH WILL
BE POSSIBLE. HEAVY RAIN LEADING TO FLOODING WILL ALSO BE A CONCERN WITH
THESE STORMS.
LATER THIS EVENING INTO EARLY THURSDAY… THUNDERSTORMS ARE EXPECTED TO
DEVELOP TO THE WEST ON THE HIGH PLAINS LATER THIS AFTERNOON AND EVENING.
THESE STORMS WILL THEN LIKELY DEVELOP INTO ONE OR MORE THUNDERSTORM
COMPLEXES THAT COULD MOVE ACROSS PORTIONS OF OKLAHOMA AND WESTERN NORTH
TEXAS LATE THIS EVENING AND OVERNIGHT. SOME OF THESE STORMS COULD BECOME
STRONG TO SEVERE WITH WIND GUSTS UP TO 70 MPH AND HAIL TO THE SIZE OF
QUARTERS. HEAVY RAIN AND FLOODING WILL ALSO CONTINUE TO BE A CONCERN.
PROBABILITY TABLE…
VALID THROUGH 700 PM CDT THURSDAY JUN 6.
PROBABILITY OF THUNDERSTORMS OCCURRING IN THE
NWS NORMAN COUNTY WARNING AREA…100 PERCENT.
PROBABILITY OF SEVERE STORMS IF STORMS OCCUR…80 PERCENT.
OTHER HAZARDOUS WEATHER…
HEAVY RAINFALL LEADING TO FLASH FLOODING AND MAINSTEM RIVER FLOODING
WILL BE POSSIBLE ACROSS PARTS OF THE AREA TODAY AND TONIGHT…
ESPECIALLY ACROSS PARTS OF CENTRAL OKLAHOMA THAT HAS ALREADY RECEIVED
SIGNIFICANT RAINFALL OVER THE PAST WEEK AND MAY HAVE DEBRIS FROM THE
RECENT TORNADOES AND WIND DAMAGE CLOGGING STORM DRAINS… DITCHES…
AND SMALL CREEKS. A FLASH FLOOD WATCH IS IN EFFECT FOR PARTS OF
OKLAHOMA.
.DAYS TWO THROUGH SEVEN…THURSDAY THROUGH TUESDAY…
THUNDERSTORM OUTLOOK…
THUNDERSTORMS WILL REMAIN POSSIBLE THURSDAY ALONG AND SOUTH OF INTERSTATE
40… WHICH INCLUDES ALL OF WESTERN NORTH TEXAS. SOME OF THESE STORMS
COULD BECOME STRONG PRODUCING SMALL HAIL… GUSTY WINDS… AND HEAVY
RAIN. THE THUNDERSTORMS ARE EXPECTED TO BE SOUTH OF THE AREA BY THURSDAY
EVENING.
THERE WILL BE A BRIEF DRY PERIOD BEFORE STORM CHANCES RETURN FRIDAY
NIGHT AND CONTINUE INTO SATURDAY AS ONE OR MORE THUNDERSTORM
COMPLEXES ONCE AGAIN MOVES ACROSS THE AREA.
OTHER HAZARDOUS WEATHER…
HEAVY RAINFALL AND LOCALIZED FLOODING WILL REMAIN POSSIBLE THURSDAY
ACROSS PARTS OF OKLAHOMA AND WESTERN NORTH TEXAS.
Flash Flood Watch through Thursday, map, National Weather Service, Norman Forecast Office coverage area
Thursday forecast, map, National Weather Service, Norman
Forecast for late this afternoon/evening, National Weather Service, Norman
Forecast for this morning, map, National Weather Service, Norman
May 31 El Reno area tornado, update, National Weather Service, Norman
PUBLIC INFORMATION STATEMENT…CORRECTED
NATIONAL WEATHER SERVICE NORMAN OK
1206 PM CDT TUE JUN 4 2013
…UPDATE ON MAY 31 EL RENO TORNADO…
METEOROLOGISTS WITH THE NATIONAL WEATHER SERVICE AND RESEARCHERS FROM
THE UNIVERSITY OF OKLAHOMA AND THE CENTER FOR SEVERE WEATHER RESEARCH
CONTINUE TO INVESTIGATE INFORMATION RELATED TO THE MAY 31 EL RENO
TORNADO.
WITH THIS INVESTIGATION… THE TORNADO HAS BEEN UPGRADED TO AN EF5
TORNADO BASED ON VELOCITY DATA FROM THE RESEARCH MOBILE RADAR DATA
FROM THE UNIVERSITY OF OKLAHOMA RAXPOL RADAR AND THE DOPPLER ON
WHEELS RADARS FROM THE CENTER FOR SEVERE WEATHER RESEARCH. IN
ADDITION… THE WIDTH OF TORNADO WAS MEASURED BY THE MOBILE RADAR
DATA TO BE 2.6 MILES AFTER THE TORNADO PASSED EAST OF US HIGHWAY 81
SOUTH OF EL RENO. THIS WIDTH IS THE WIDTH OF THE TORNADO ITSELF AND
DOES NOT INCLUDE THE DAMAGING STRAIGHT-LINE WINDS NEAR THE TORNADO AS
DETERMINED BY THE HIGH-RESOLUTION MOBILE RADAR DATA. THE 2.6 MILE
TORNADO PATH WIDTH IS BELIEVED TO BE THE WIDEST TORNADO ON RECORD
IN THE UNITED STATES.
.EL RENO TORNADO
RATING: EF5
PATH LENGTH /STATUTE/: 16.2 MILES
PATH WIDTH /MAXIMUM/: 2.6 MILES
FATALITIES: N/A
INJURIES: N/A
START DATE: MAY 31 2013
START TIME: 6:03 PM CDT
START LOCATION: 8.3 WSW OF EL RENO /CANADIAN COUNTY /OK
NEAR COURTNEY ROAD ABOUT 1 MILE NORTH
OF REUTER ROAD
START LAT/LON: 35.495 / -98.095
END DATE: MAY 31 2013
END TIME: 6:43 PM CDT
END LOCATION: 6.2 ESE OF EL RENO /CANADIAN COUNTY /OK
NEAR INTERSTATE 40 AND BANNER ROAD
END LAT/LON: 35.502 / -97.848
El Reno tornado, reports
Reports are that El Reno tornado now rated EF5, Doppler measured 296 mph. 2.6 miles wide.
