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Public Information Statement
Issued by NWS New Orleans/Baton Rouge, LA
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LAZ034>037-039-040-046>050-056>072-MSZ068>071-077-080>082-130100-

PUBLIC INFORMATION STATEMENT
NATIONAL WEATHER SERVICE NEW ORLEANS/BATON ROUGE LA
751 AM CDT SUN MAY 12 2013

...NWS DAMAGE SURVEY FOR 05/10/13 THUNDERSTORM WIND EVENT
   UPDATE 1...

...WIND DAMAGE IN THE ST CATHERINE AREA OF NORTHEAST ORLEANS PARISH...

.OVERVIEW...SEVERE THUNDERSTORMS ASSOCIATED WITH A SQUALL LINE MOVED
THROUGH THE REGION EARLY FRIDAY MORNING. SEVERAL STRONG ROTATIONS WERE
INDICATED BY RADAR...PARTICULARLY OVER MIDDLE LAKE PONTCHARTRAIN. ONE
APPARENT WATERSPOUT MOVED TOWARDS THE MOUTH OF THE RIGOLETS. A STRONG
REAR FLANK DOWNDRAFT STRUCTURE WAS NOTED ABOUT 4 MILES SOUTH OF THE
PRIMARY CIRCULATION. A TORNADO WARNING WAS IN EFFECT FOR THE SURVEYED AREA.

PEAK WIND ESTIMATED:    75-85 MPH
PATH LENGTH /STATUTE/:  0.1 MILES
PATH WIDTH /MAXIMUM/:   30 YARDS
FATALITIES:             0
INJURIES:               0

START DATE:             MAY_10_2013
START TIME:             0734_AM_CDT
START LOCATION:         ST CATHERINE_/_ORLEANS_/_LA
START LAT/LON:          30.139417_/_-89.753784

END DATE:               MAY_10_2013|
END TIME:               0735_AM_CDT
END LOCATION:           ST CATHERINE_/_ORLEANS_/_LA
END LAT/LON:          30.139418_/_-89.853500

SURVEY_SUMMARY: STEEL GIRDER STICK FRAME CAMP WITH VINYL SIDING AND METAL
ROOF ON A 15 FOOT PIER WAS STRUCK BY REAR FLANK WINDS OFF THE OPEN LAKE WEST
REAR OF STRUCTURE. NEARLY ENTIRE STRUCTURE WAS BLOWN TO THE EAST WITH
ROOFING MATERIAL AND FURNITURE BLOWN 30 TO 50 YARDS DOWNRANGE. TWO PORTIONS
OF SIDING WERE BLOWN ACROSS CHEF MENTEUR HIGHWAY ABOUT 10 YARDS EAST OF THE
ROADWAY. TWO ADDITIONAL CAMP STRUCTURES ACROSS THE HIGHWAY ALSO HAD MINOR
DAMAGE WITH ONE INDICATING A DAMAGED FASCIA AND THE OTHER HAD ABOUT 50
PERCENT OF THE VINYL SIDING REMOVED ON THE NORTH FACING SIDE BETWEEN THE
TWO STRUCTURES. THE ORIENTATION OF THESE CAMPS TO THE OTHER IS ENE AND IN
LINE WITH THE NARROW REAR FLANK FEATURE. DAMAGE OCCURRED IN THE VICINITY
OF 25470 CHEF MENTEUR HIGHWAY. ALSO SPOKE WITH RIGOLETS MARINA PERSONNEL
AND THEY INDICATED SOME ROOFING SHINGLES WERE REMOVED FROM HIGH WINDS CLOSER
TO THE ACTUAL CIRCULATION...BUT NO WATERSPOUTS OR TORNADOES WERE SIGHTED.
DAMAGE WAS CONSISTENT WITH REAR FLANK DOWNDRAFT FINGER INDICATED BY RADAR
LOOP ANALYSIS DOPPLER WIND DATA.

NOTE:
THE INFORMATION IN THIS STATEMENT IS PRELIMINARY AND SUBJECT TO
CHANGE PENDING FINAL REVIEW OF THE EVENT AND PUBICATION IN
NWS STORM DATA.

$$

24/RR
National Weather Service Weather Forecast Office
