EF5 damage has been found at Briarwood Elementary School, said Rick Smith, National Weather Service, Norman
Significant weather advisory for Pontotoc, Coal, Hughes counties
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE NORMAN OK
120 PM CDT TUE MAY 21 2013
PONTOTOC OK-COAL OK-HUGHES OK-
120 PM CDT TUE MAY 21 2013
…SIGNIFICANT WEATHER ADVISORY FOR EASTERN PONTOTOC…CENTRAL COAL
AND HUGHES COUNTIES UNTIL 215 PM CDT…
AT 116 PM CDT…A STRONG THUNDERSTORM WAS LOCATED NEAR TUPELO…
MOVING NORTHEAST AT 55 MPH.
HAZARDS INCLUDE…
HAIL UP TO THE SIZE OF NICKELS…
POTENTIALLY SEVERE WINDS GUSTING OVER 55 MPH…
MINOR FLOODING IN AREAS OF POOR DRAINAGE…
FREQUENT CLOUD TO GROUND LIGHTNING…
Preliminary information on Newcastle/Moore Tornado, EF4; est. peak wind 190 mph, path 17 miles
PUBLIC INFORMATION STATEMENT
NATIONAL WEATHER SERVICE NORMAN OK
110 PM CDT TUE MAY 21 2013
…NWS DAMAGE SURVEY FOR 5/20/2013 NEWCASTLE/MOORE TORNADO EVENT -
UPDATE 2…
.OVERVIEW…
THE NATIONAL WEATHER SERVICE DISPATCHED FOUR DAMAGE SURVEY TEAMS TO
THE PATH OF THE NEWCASTLE/MOORE OK TORNADO. NEW STATEMENTS WILL BE
ISSUED THROUGHOUT THE DAY AS THESE TEAMS REPORT FINDINGS. THIS
INFORMATION REMAINS PRELIMINARY AND THE INFORMATION HERE COULD
CHANGE.
.NEWCASTLE/MOORE TORNADO
RATING: EF4
ESTIMATED PEAK WIND: 190 MPH
PATH LENGTH /STATUTE/: 17 MILES
PATH WIDTH /MAXIMUM/: N/A
FATALITIES: N/A
INJURIES: N/A
START DATE: MAY 20 2013
START TIME: 2:45 PM CDT
START LOCATION: 4.4 W NEWCASTLE /GRADY COUNTY /OK
START LAT/LON: 35.2580 / -97.6775
END DATE: MAY 20 2013
END TIME: 3:35 PM CDT
END LOCATION: 4.8 E OF MOORE OK /CLEVELAND COUNTY /OK
END LAT/LON: 35.3409 / -97.4007
SURVEY SUMMARY: FOUR SURVEY TEAMS CONTINUE TO SURVEY THIS LONG TRACK
TORNADO. INITIAL DAMAGE WAS FOUND AROUND 4.4 MILES WEST OF NEWCASTLE
…SOUTH OF TECUMSEH ROAD ALSO KNOWN AS NW 16TH STREET AND EAST LAKE
ROAD. THE TORNADO TRACKED NE TO THE INTERSTATE 44 BRIDGE OVER THE
CANADIAN RIVER AND THEN TOOK A MORE EASTWARD TRACK THROUGH MOORE.
TORNADO DAMAGE ABRUPTLY ENDS 0.3 MILES EAST OF AIR DEPOT ROAD AND N
OF SE 134TH ST.
INITIALLY PRODUCING EF0 AND EF1 DAMAGE THE STORM INTENSIFIED VERY
RAPIDLY IN 4 MILES PRODUCING EF4 DAMAGE BEFORE REACHING INTERSTATE
44. ONGOING SURVEYS THROUGH MOORE HAVE ALREADY DOCUMENTED NUMEROUS
INDICATIONS OF EF4 DAMAGE WITH ESTIMATED WIND SPEEDS OF 190 MPH.
ADDITIONAL INFORMATION SUCH AS MAXIMUM PATH WIDTH WILL BE UPDATED
AS THE TEAMS COMPLETE THEIR SURVEYS.
Significant weather advisory
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE NORMAN OK
1252 PM CDT TUE MAY 21 2013
LINCOLN OK-SEMINOLE OK-MCCLAIN OK-PONTOTOC OK-GARVIN OK-CLEVELAND OK-
POTTAWATOMIE OK-MURRAY OK-HUGHES OK-
1252 PM CDT TUE MAY 21 2013
…SIGNIFICANT WEATHER ADVISORY FOR SOUTHEASTERN LINCOLN…
SEMINOLE…SOUTHEASTERN MCCLAIN…NORTHERN PONTOTOC…CENTRAL
GARVIN…SOUTHEASTERN CLEVELAND…POTTAWATOMIE…NORTH CENTRAL MURRAY
AND HUGHES COUNTIES UNTIL 145 PM CDT…
AT 1248 PM CDT…A STRONG THUNDERSTORM WAS LOCATED NEAR STRATFORD…
MOVING NORTHEAST AT 55 MPH. OTHER STRONG THUNDERSTORMS WERE LOCATED
NEAR MAUD AND SEMINOLE ALSO MOVING NORTHEAST AT 55 MPH.
HAZARDS INCLUDE…
HAIL UP TO ONE-HALF INCH DIAMETER…
POTENTIALLY SEVERE WINDS GUSTING OVER 55 MPH…
MINOR FLOODING IN AREAS OF POOR DRAINAGE…
FREQUENT CLOUD TO GROUND LIGHTNING…
Significant weather advisory for Lincoln, Payne
LINCOLN OK-PAYNE OK-
1245 PM CDT TUE MAY 21 2013
…SIGNIFICANT WEATHER ADVISORY FOR LINCOLN AND CENTRAL PAYNE
COUNTIES UNTIL 130 PM CDT…
AT 1242 PM CDT…AN AREA OF STRONG THUNDERSTORMS WAS LOCATED ACROSS
WESTERN LINCOLN COUNTY…MOVING NORTHEAST AT 55 MPH.
HAZARDS INCLUDE…
POTENTIALLY SEVERE WINDS GUSTING OVER 55 MPH…
BRIEF HEAVY RAINFALL…
Significant weather advisory for Logan, Oklahoma, Lincoln, Payne counties
NATIONAL WEATHER SERVICE NORMAN OK
1225 PM CDT TUE MAY 21 2013
LOGAN OK-OKLAHOMA OK-LINCOLN OK-PAYNE OK-
1225 PM CDT TUE MAY 21 2013
…SIGNIFICANT WEATHER ADVISORY FOR SOUTHEASTERN LOGAN…OKLAHOMA…
LINCOLN AND SOUTHEASTERN PAYNE COUNTIES UNTIL 115 PM CDT…
AT 1221 PM CDT…A STRONG THUNDERSTORM WAS LOCATED NEAR SPENCER…
MOVING NORTHEAST AT 55 MPH.
HAZARDS INCLUDE…
HAIL UP TO ONE-HALF INCH DIAMETER…
WIND GUSTS TO 40 MPH…
FREQUENT CLOUD TO GROUND LIGHTNING…
Significant weather advisory Oklahoma, Lincoln, Seminole, McClain, Garvin, Cleveland, Pottawatomie counties, National Weather Service, Norman
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE NORMAN OK
1223 PM CDT TUE MAY 21 2013
OKZ025-026-028>031-040-211815-
OKLAHOMA OK-LINCOLN OK-SEMINOLE OK-MCCLAIN OK-GARVIN OK-CLEVELAND OK-
POTTAWATOMIE OK-
1223 PM CDT TUE MAY 21 2013
…SIGNIFICANT WEATHER ADVISORY FOR SOUTHEASTERN OKLAHOMA…SOUTHERN
LINCOLN…WESTERN SEMINOLE…SOUTHWESTERN MCCLAIN…NORTHERN
GARVIN…CLEVELAND AND POTTAWATOMIE COUNTIES UNTIL 115 PM CDT…
AT 1221 PM CDT…A STRONG THUNDERSTORM WAS LOCATED NEAR
WASHINGTON…OR JUST WEST OF NORMAN…MOVING NORTHEAST AT 55 MPH.
THIS STORM IS EXPECTED TO STAY SOUTH OF MOORE.
HAZARDS INCLUDE…
HAIL UP TO ONE-HALF INCH DIAMETER…
WIND GUSTS TO 40 MPH…
HEAVY RAINFALL…
FREQUENT CLOUD TO GROUND LIGHTNING…
From National Weather Service, Tulsa
Source: National Weather Service, Tulsa: “At 11am the outflow boundary was near the Red River in Choctaw Co. and extends WSW into NW TX… elevated severe storms are occurrring north of the boundary in OK and should continue east this afternoon into the severe watch… as long as the boundary does not get too far south there will be some tornado risk in Choctaw Co. with the arriving storms this afternoon.”
Severe thunderstorm warning Carter, Garvin, Jefferson, Murray, Stephens counties
Area forecast discussion, National Weather Service, Norman
NATIONAL WEATHER SERVICE NORMAN OK
1210 PM CDT TUE MAY 21 2013
.UPDATE…
MADE BRIEF UPDATES TO THE GOING FORECAST THIS MORNING. POPS WERE
SIGNIFICANTLY INCREASED OVER CENTRAL AND SOUTHERN OKLAHOMA AS
ONGOING COMPLEX CONTINUES TO MOVE EASTWARD. CURRENT THINKING BASED
ON RECENT HIGH RESOLUTION MODELS IS THAT MOST ACTIVITY WILL END
FROM WEST TO EAST THROUGH MID AFTERNOON. STILL…HEAVY RAINFALL,
FREQUENT LIGHTNING, AND SMALL HAIL WILL BE A THREAT TO ONGOING
SEARCH AND RESCUE OPERATIONS IN CENTRAL OKLAHOMA. SEVERE
THUNDERSTORMS WILL HAVE A GREATER WINDOW OF DEVELOPMENT OVER SOUTH
CENTRAL AND SOUTHEAST OKLAHOMA…NEARER THE GREATER INSTABILITY.
