Alert archive / Louisiana / Tornado Watches in 2005

Tornado Watch 607

July 5, 2005Baldwin County, Mobile County, Alabama; 11 parishes in Louisiana; 6 counties in Mississippi

The Storm Prediction Center issued this tornado watch at Jul 5, 2005, 2:45 PM CDT for Baldwin County, Mobile County, Alabama; 11 parishes in Louisiana; 6 counties in Mississippi. It was in force for 9 hr.

The area

The outline as issued.

The facts

Issued: Jul 5, 2005, 2:45 PM CDT (19:45 UTC)
Expired: Jul 5, 2005, 11:35 PM CDT
In force: 9 hr
Issued by: the Storm Prediction Center

Counties Baldwin County, AL, Mobile County, AL, Jefferson Parish, LA, Lafourche Parish, LA, Livingston Parish, LA, Orleans Parish, LA, Plaquemines Parish, LA, Saint Bernard Parish, LA, Saint Charles Parish, LA, Saint James Parish, LA, Saint John the Baptist Parish, LA, Saint Tammany Parish, LA, Tangipahoa Parish, LA, George County, MS, Hancock County, MS, Harrison County, MS, Jackson County, MS, Pearl River County, MS, Stone County, MS

Warnings issued inside it

7 tornado, severe thunderstorm and flash flood warnings for its counties while it was in force.

Issued	Product	Office	Counties	Lasted
Jul 5, 2:48 PM CDT	Tornado Warning	LIX	Hancock, Harrison	27 min
Jul 5, 5:21 PM CDT	Tornado Warning	LIX	Hancock	24 min
Jul 5, 5:49 PM CDT	Tornado Warning	LIX	Hancock	26 min
Jul 5, 6:04 PM CDT	Tornado Warning	LIX	Pearl River	26 min
Jul 5, 6:33 PM CDT	Tornado Warning	LIX	Pearl River	27 min
Jul 5, 10:00 PM CDT	Tornado Warning	LIX	Plaquemines	34 min
Jul 5, 11:06 PM CDT	Tornado Warning	LIX	Plaquemines	27 min

Discussions around it

SPC mesoscale discussions over the same counties from four hours before the watch to its end.

The nearest sounding before it

Slidell Radar S, LA (KSIL), launched 12:00Z, 7.8 hours before the alert went out and 25 km from the middle of its area. This is the routine balloon launch nearest before it, the air the forecaster had in hand, not a measurement taken for the alert.

Skew-T log-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

The wind turning with height, colored by layer: ground to 1 km, 1 to 3 km, 3 to 6 km, 6 to 10 km.

Mixed-layer CAPE: 1482 J/kg
Mixed-layer CIN: -11 J/kg
Mixed-layer LCL: 613 m above ground
0-6 km bulk shear: 6 kt
0-1 km storm-relative helicity: -5 m²/s²
0-3 km storm-relative helicity: 26 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

As transmitted, in the capitals the NWS used until 2016.

000 
WWUS20 KWNS 051943
SEL7  
SPC WW 051943
ALZ000-LAZ000-MSZ000-CWZ000-060500-

URGENT - IMMEDIATE BROADCAST REQUESTED
TORNADO WATCH NUMBER 607
NWS STORM PREDICTION CENTER NORMAN OK
245 PM CDT TUE JUL 5 2005

THE NWS STORM PREDICTION CENTER HAS ISSUED A
TORNADO WATCH FOR PORTIONS OF 

       FAR SOUTHERN ALABAMA
       SOUTHEASTERN LOUISIANA
       SOUTHERN MISSISSIPPI
       COASTAL WATERS

EFFECTIVE THIS TUESDAY AFTERNOON FROM 245 PM UNTIL MIDNIGHT CDT.

TORNADOES...THUNDERSTORM WIND GUSTS TO 70 MPH...AND DANGEROUS
LIGHTNING ARE POSSIBLE IN THESE AREAS.

THE TORNADO WATCH AREA IS APPROXIMATELY ALONG AND 60 STATUTE MILES
NORTH AND SOUTH OF A LINE FROM 20 MILES NORTH NORTHWEST OF HOUMA
LOUISIANA TO 55 MILES EAST SOUTHEAST OF MOBILE ALABAMA.  FOR A
COMPLETE DEPICTION OF THE WATCH SEE THE ASSOCIATED WATCH OUTLINE
UPDATE (WOUS64 KWNS WOU7).

REMEMBER...A TORNADO WATCH MEANS CONDITIONS ARE FAVORABLE FOR
TORNADOES AND SEVERE THUNDERSTORMS IN AND CLOSE TO THE WATCH AREA.
PERSONS IN THESE AREAS SHOULD BE ON THE LOOKOUT FOR THREATENING
WEATHER CONDITIONS AND LISTEN FOR LATER STATEMENTS AND POSSIBLE
WARNINGS.

OTHER WATCH INFORMATION...CONTINUE...WW 605...WW 606...

DISCUSSION...ENVIRONMENT EXPECTED TO BECOME INCREASINGLY FAVORABLE
FOR A THREAT OF TORNADOES INTO SERN LA/SRN MS/SRN AL THROUGH THE
EVENING AS T.S. CINDY NEARS.  BACKING SURFACE WINDS AND PRESSURE
FALLS ARE EXPECTED TO INCREASE LOW LEVEL SHEAR AND MAY SUPPORT A FEW
TORNADOES AS STRONGER CELLS ROTATE INLAND.

AVIATION...TORNADOES AND A FEW SEVERE THUNDERSTORMS WITH EXTREME
TURBULENCE AND SURFACE WIND GUSTS TO 60 KNOTS. A FEW CUMULONIMBI
WITH MAXIMUM TOPS TO 500. MEAN STORM MOTION VECTOR 17030.


...EVANS

304,0904 311,0872 292,0872 285,0904

SPC that day

Everything else SPC issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Jul 5, 12:40 PM CDT	Mesoscale Discussion	SPC	Baldwin, Mobile	3 hr

Nearby

Tornado Watches in Louisiana, 2005 Tornado Watches in Mississippi, 2005 Tornado Watches in Alabama, 2005 Every tornado watch in 2005

Sources

The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; the sounding from the Mesonet's radiosonde archive.