Alert archive / Louisiana / Severe Thunderstorm Warnings in 2009

Severe Thunderstorm Warning 21, NWS New Orleans, LA

March 26, 20094 parishes in Louisiana

NWS New Orleans, LA issued this severe thunderstorm warning at Mar 26, 2009, 7:26 PM CDT for 4 parishes in Louisiana. It was in force for 49 min. No storm report in the archive falls inside the area while it was in force.

The area

The outline as issued.

The facts

Issued
Mar 26, 2009, 7:26 PM CDT (00:26 UTC)
Expired
Mar 26, 2009, 8:15 PM CDT
In force
49 min
Issued by
NWS New Orleans, LA
Area
Storm-based polygon

Counties East Baton Rouge Parish, LA, East Feliciana Parish, LA, Pointe Coupee Parish, LA, West Feliciana Parish, LA

Did it verify

Not verified. The Iowa Environmental Mesonet's Cow found no qualifying storm report inside this severe thunderstorm warning while it was in force. That is not proof nothing happened: reports are thin where few people live.

Cow counts a report within 15 km of the polygon while the warning was in force: a tornado for a tornado warning; hail of 1 inch or more, a gust of 58 mph or more or wind damage for a severe thunderstorm warning; a flash flood report for a flash flood warning.

The watch it was issued in

The SPC watch in force over the same counties when this warning went out.

IssuedProductOfficeLasted
Mar 26, 5:56 PM CDTTornado WatchSPC7 hr

The nearest sounding before it

Slidell Radar S, LA (KSIL), launched 00:00Z, 0.4 hours before the alert went out and 159 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-pSkew-T log-p diagram, Slidell Radar S, LA at 00:00Z on 2009-03-27Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1797 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Slidell Radar S, LA at 00:00Z on 2009-03-27The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 203 square meters per square second.19395878Sfc1 km3 km6 km9 kmRMLM
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
1797 J/kg
Mixed-layer CIN
-18 J/kg
Mixed-layer LCL
559 m above ground
0-6 km bulk shear
54 kt
0-1 km storm-relative helicity
203 m²/s²
0-3 km storm-relative helicity
245 m²/s²
Significant tornado parameter
3.0
Supercell composite
10.8

Open this sounding in Storm Lab

The text

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

000 
WUUS54 KLIX 270026
SVRLIX
LAC033-037-077-125-270115-
/O.NEW.KLIX.SV.W.0021.090327T0026Z-090327T0115Z/

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE NEW ORLEANS LA
726 PM CDT THU MAR 26 2009

THE NATIONAL WEATHER SERVICE IN NEW ORLEANS HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  NORTHWESTERN EAST BATON ROUGE PARISH IN SOUTHEAST LOUISIANA...
  WESTERN EAST FELICIANA PARISH IN SOUTHEAST LOUISIANA...
  THIS INCLUDES THE CITY OF JACKSON...
  EAST CENTRAL POINTE COUPEE PARISH IN SOUTHEAST LOUISIANA...
  SOUTHEASTERN WEST FELICIANA PARISH IN SOUTHEAST LOUISIANA...
  THIS INCLUDES THE CITY OF ST. FRANCISVILLE...

* UNTIL 815 PM CDT

* AT 722 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM CAPABLE OF PRODUCING NICKEL SIZE HAIL.  THIS
  STORM WAS LOCATED NEAR ST. FRANCISVILLE...AND MOVING EAST AT 25
  MPH.

* THE SEVERE THUNDERSTORM WILL BE NEAR...
  7 MILES SOUTH OF WAKEFIELD BY 730 PM CDT...
  JACKSON BY 750 PM CDT...
  7 MILES NORTH OF SLAUGHTER BY 755 PM CDT...
  9 MILES SOUTH OF NORWOOD BY 810 PM CDT...

THIS IS A DANGEROUS STORM. IF YOU ARE IN ITS PATH...PREPARE
IMMEDIATELY FOR DAMAGING WINDS...DESTRUCTIVE HAIL...AND DEADLY CLOUD
TO GROUND LIGHTNING. PEOPLE OUTSIDE SHOULD MOVE TO A SHELTER...
PREFERABLY INSIDE A STRONG BUILDING BUT AWAY FROM WINDOWS.

A TORNADO WATCH REMAINS IN EFFECT UNTIL 100 AM CDT FRIDAY MORNING FOR
SOUTHEAST LOUISIANA AND SOUTHERN MISSISSIPPI.

LAT...LON 3098 9107 3070 9109 3067 9144 3087 9142
TIME...MOT...LOC 0026Z 256DEG 22KT 3078 9136

$$
2 follow-up statements
000 
WWUS54 KLIX 270040
SVSLIX

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE NEW ORLEANS LA
740 PM CDT THU MAR 26 2009

LAC033-077-270049-
/O.CAN.KLIX.SV.W.0021.000000T0000Z-090327T0115Z/
POINTE COUPEE LA-EAST BATON ROUGE LA-
740 PM CDT THU MAR 26 2009

...THE SEVERE THUNDERSTORM WARNING FOR NORTHWESTERN EAST BATON ROUGE
AND EAST CENTRAL POINTE COUPEE PARISHES IS CANCELLED...

THE STORM THAT PROMPTED THE WARNING HAS MOVED OUT OF THE WARNED AREA.

A TORNADO WATCH REMAINS IN EFFECT UNTIL 100 AM CDT FRIDAY MORNING FOR
SOUTHEAST LOUISIANA AND SOUTHERN MISSISSIPPI.

LAT...LON 3073 9109 3070 9133 3091 9130 3098 9107
TIME...MOT...LOC 0039Z 256DEG 22KT 3080 9127

$$

LAC037-125-270115-
/O.CON.KLIX.SV.W.0021.000000T0000Z-090327T0115Z/
EAST FELICIANA LA-WEST FELICIANA LA-
740 PM CDT THU MAR 26 2009

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 815 PM CDT
FOR SOUTHEASTERN WEST FELICIANA AND WESTERN EAST FELICIANA
PARISHES...

AT 736 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUED TO
INDICATE A SEVERE THUNDERSTORM CAPABLE OF PRODUCING NICKEL SIZE HAIL.
 THIS STORM WAS LOCATED NEAR JACKSON...OR NEAR ST. FRANCISVILLE...
MOVING EAST AT 25 MPH.

THE SEVERE THUNDERSTORM WILL BE NEAR...
  JACKSON BY 750 PM CDT...
  9 MILES SOUTH OF NORWOOD BY 810 PM CDT...

A TORNADO WATCH REMAINS IN EFFECT UNTIL 100 AM CDT FRIDAY MORNING FOR
SOUTHEAST LOUISIANA AND SOUTHERN MISSISSIPPI.

LAT...LON 3073 9109 3070 9133 3091 9130 3098 9107
TIME...MOT...LOC 0039Z 256DEG 22KT 3080 9127

$$
000 
WWUS54 KLIX 270046
SVSLIX

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE NEW ORLEANS LA
746 PM CDT THU MAR 26 2009

LAC037-125-270115-
/O.CON.KLIX.SV.W.0021.000000T0000Z-090327T0115Z/
EAST FELICIANA LA-WEST FELICIANA LA-
746 PM CDT THU MAR 26 2009

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 815 PM CDT
FOR SOUTHEASTERN WEST FELICIANA AND WESTERN EAST FELICIANA
PARISHES...

AT 745 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUED TO
INDICATE A SEVERE THUNDERSTORM CAPABLE OF PRODUCING NICKEL SIZE HAIL.
THIS STORM WAS LOCATED NEAR JACKSON...MOVING EAST AT 25 MPH.

THE SEVERE THUNDERSTORM WILL BE NEAR...
  9 MILES SOUTH OF NORWOOD BY 810 PM CDT...

A TORNADO WATCH REMAINS IN EFFECT UNTIL 100 AM CDT FRIDAY MORNING FOR
SOUTHEAST LOUISIANA AND SOUTHERN MISSISSIPPI.

LAT...LON 3073 9109 3072 9113 3072 9129 3091 9126
      3098 9107
TIME...MOT...LOC 0046Z 256DEG 22KT 3081 9122

$$

What forecasters said that day

The local office's own words before this severe thunderstorm warning went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.

NWS New Orleans, LA wrote its last area forecast discussion before this severe thunderstorm warning went out at Mar 26, 3:44 PM CDT, 3 hours 42 minutes earlier.

Area forecast discussion, Mar 26, 3:44 PM CDT, 3 hours 42 minutes before
AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE NEW ORLEANS LA
344 PM CDT THU MAR 26 2009

.SYNOPSIS...
APPARENT SURFACE BOUNDARY HAS SURGED BACK TO THE NORTH OF INTERSTATE
10-12 CORRIDOR AS OF 20Z...AS NOTED BY RECOVERY OF DEW POINTS AND
WEAK RADAR ECHOES. SPECIAL 19Z LIX SOUNDING SHOWS CAPE OF
1753...LI OF -5...HELICITY OF 260 AND WET BULB ZERO OF 9900 FEET.
CONVECTION NOW FIRING RATHER RAPIDLY OVER SOUTHEAST TEXAS.
&&

.SHORT TERM...
NEXT 48 HOURS IS THE SIGNIFICANT PORTION OF THE ENTIRE FORECAST
PACKAGE. BASIC SCENARIO HAS NOT CHANGED OVER THE LAST 24
HOURS...WITH 2 SIGNIFICANT BATCHES OF CONVECTION ABOUT 24 HOURS
APART. FIRST TO AFFECT WESTERN PORTIONS OF THE AREA...LIKELY
BEFORE MIDNIGHT TONIGHT...MOVING EASTWARD BY MORNING. THE SECOND
FRIDAY NIGHT INTO EARLY SATURDAY MORNING. AS WAS THE CASE THIS
MORNING...STILL SIGNIFICANT POTENTIAL FOR TORNADOES WITH BOTH
EVENTS. WET BULB ZERO HEIGHTS INDICATE A LITTLE BETTER HAIL
POTENTIAL TONIGHT...WHILE SQUALL LINE DEVELOPMENT FAVORS WINDS A
LITTLE BETTER TOMORROW NIGHT. GFS/ECMWF SOLUTION BETTER FOR
FRONTAL TIMING...WHICH SHOULD HAVE MOST OR ALL OF THE AREA BEHIND
THE FRONT AROUND SUNRISE SATURDAY. WILL CONTINUE MENTION OF SEVERE
IN THE ZONES...BUT NOT MENTION A PARTICULAR MODE OF SEVERE WEATHER.

RAINFALL AMOUNTS LAST NIGHT WERE IN THE 1 TO 3 INCH RANGE ACROSS
THE AREA...AS EARLIER ANTICIPATED. SIMILAR RAINFALL RATES APPEAR
TO BE LIKELY TONIGHT AND FRIDAY NIGHT. BOTH GFS AND NAM SOLUTIONS
DID NOT GIVE A GOOD REPRESENTATION OF CURRENT EVENTS OR EXPECTED
PRECIPITATION PATTERN...AND FAVORED A MODIFIED VERSION OF HPCS
GUIDANCE FOR THE QPF GRIDS. BETWEEN THE 2 EVENTS...PROBABLY
ANOTHER 2 TO 4 INCHES OF RAIN BY SATURDAY MORNING...AND CURRENT
FLASH FLOOD WATCH WILL BE CONTINUED.

MUCH COOLER AIR WILL MOVE INTO THE AREA FOR 24 TO 36 HOURS BEHIND
THE FRONT...WITH OVERNIGHT LOWS SATURDAY NIGHT APPROACHING 40
ACROSS THE NORTH. 35
&&

.LONG TERM...
QUICK MOVING FLOW CONTINUES WITH TWO MORE SIGNIFICANT TROFS
EXPECTED AROUND TUESDAY AND THURSDAY. RETURN OF DEEP MOISTURE WILL
BE LESS FAVORABLE THAN THE LAST COUPLE OF DAYS...SO WILL ONLY GO
WITH CHANCE POPS FOR NOW. TEMPERATURES WILL RETURN TO ABOVE NORMAL
LEVELS BY MONDAY NIGHT OR TUESDAY. 35
&&

.AVIATION...AGAIN THE MAIN ISSUE IS CONVECTION. SHRA AND TSRA WILL
REALLY BEGIN TO RAMP UP LATE THIS EVN(PROBABLY AFTER 2Z) AND THESE
STORMS VERY WELL COULD BE SEVERE. ALL FORMS OF SVR WXR IS POSSIBLE
WITH DAMAGING WINDS...A FEW TORNADOES AND LARGE HAIL. CEILINGS WILL
REMAIN AROUND 3K TO 4500 FT UNTIL CONVECTION MOVES OVER DROPPING
CEILINGS INTO MVFR STATUS AT TIMES. VISBIES WILL ALSO FALL INTO
MVFR/IFR AND EVEN LIFR WITH THE STRONGEST STORMS BUT OUTSIDE OF RAIN
VISBIES SHOULD REMAIN IN VFR STATUS. WINDS WILL REMAIN BREEZY OUT OF
THE SOUTH. /CAB/
&&

.MARINE...
SMALL CRAFT ADVISORIES HAVE BEEN EXTENDED THROUGH SATURDAY
MORNING FOR THE COASTAL WATERS AS STRONG SWELL TRAINING ASSOCIATED
WITH STRONG SOUTHERLY FLOW CONTINUES TO BRING ROUGH BOATING
CONDITIONS TO THE REGION. SEAS OF 7 TO 9 FEET AND WINDS IN EXCESS
OF 20 KNOTS WILL CONTINUE THROUGH FRIDAY NIGHT AS A STRONG AREA OF
LOW PRESSURE DEVELOPS IN THE PLAINS STATES. CONDITIONS WILL BEGIN
TO IMPROVE THIS WEEKEND AS WINDS SHIFT TO THE NORTH AND HIGH
PRESSURE BUILDS OVER THE GULF SOUTH. TIDES WILL REMAIN ABOVE
NORMAL OVER THE NEARSHORE WATERS...WITH COASTAL FLOODING EXPECTED.
/CAB/
&&

.PRELIMINARY POINT TEMPS/POPS...
MCB  63  78  56  65 / 100  60  80  30
BTR  66  80  54  67 / 100  60  80  30
MSY  67  80  61  66 / 100  60  80  40
GPT  65  75  67  68 / 100  80  80  60

&&

.LIX WATCHES/WARNINGS/ADVISORIES...
LA...FLASH FLOOD WATCH UNTIL 7 AM SATURDAY FOR THE FOLLOWING ZONES:
     ASCENSION...ASSUMPTION...EAST BATON ROUGE...EAST
     FELICIANA...IBERVILLE...LIVINGSTON...LOWER
     JEFFERSON...LOWER LAFOURCHE...LOWER PLAQUEMINES...LOWER ST.
     BERNARD...LOWER TERREBONNE...ORLEANS...POINTE COUPEE...ST.
     CHARLES...ST. HELENA...ST. JAMES...ST. JOHN THE
     BAPTIST...ST. TAMMANY...TANGIPAHOA...UPPER
     JEFFERSON...UPPER LAFOURCHE...UPPER PLAQUEMINES...UPPER ST.
     BERNARD...UPPER TERREBONNE...WASHINGTON...WEST BATON
     ROUGE...AND WEST FELICIANA.

     COASTAL FLOOD WATCH FROM 7 AM FRIDAY TO 7 PM FRIDAY FOR THE
     FOLLOWING ZONES: LIVINGSTON...LOWER JEFFERSON...LOWER
     LAFOURCHE...LOWER PLAQUEMINES...LOWER ST.
     BERNARD...ORLEANS...ST. CHARLES...ST. JOHN THE
     BAPTIST...ST. TAMMANY...TANGIPAHOA...UPPER
     JEFFERSON...UPPER PLAQUEMINES...AND UPPER ST. BERNARD.

GM...SMALL CRAFT ADVISORY FROM 10 AM FRIDAY TO 7 AM SATURDAY FOR
     GMZ530.

     SMALL CRAFT ADVISORY UNTIL 7 AM SATURDAY FOR THE FOLLOWING
     ZONES: GMZ550-555-570-575.

MS...FLASH FLOOD WATCH UNTIL 7 AM SATURDAY FOR THE FOLLOWING ZONES:
     AMITE...HANCOCK...HARRISON...JACKSON...PEARL
     RIVER...PIKE...WALTHALL...AND WILKINSON.

     COASTAL FLOOD WATCH FROM 7 AM FRIDAY TO 7 PM FRIDAY FOR THE
     FOLLOWING ZONES: AND HANCOCK.

&&
Hazardous weather outlook, Mar 26, 6:11 PM CDT, 1 hour 15 minutes before
HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE NEW ORLEANS LA
611 PM CDT THU MAR 26 2009

GMZ530-550-555-570-575-LAZ034>040-046>050-056>070-MSZ068>071-077-
080>082-272315-
LAKE PONTCHARTRAIN AND LAKE MAUREPAS-
COASTAL WATERS FROM THE SOUTHWEST PASS OF THE MISSISSIPPI RIVER
TO LOWER ATCHAFALAYA RIVER LA OUT 20 NM-
COASTAL WATERS FROM PASCAGOULA MS TO THE SOUTHWEST PASS OF THE
MISSISSIPPI RIVER OUT 20 NM-
COASTAL WATERS FROM THE SOUTHWEST PASS OF THE MISSISSIPPI RIVER
TO LOWER ATCHAFALAYA RIVER LA FROM 20 TO 60 NM-
COASTAL WATERS FROM PASCAGOULA MS TO THE SOUTHWEST PASS OF THE
MISSISSIPPI RIVER FROM 20 TO 60 NM-POINTE COUPEE-WEST FELICIANA-
EAST FELICIANA-ST. HELENA-TANGIPAHOA-WASHINGTON-ST. TAMMANY-
IBERVILLE-WEST BATON ROUGE-EAST BATON ROUGE-ASCENSION-LIVINGSTON-
ASSUMPTION-ST. JAMES-ST. JOHN THE BAPTIST-UPPER LAFOURCHE-
ST. CHARLES-UPPER JEFFERSON-ORLEANS-UPPER PLAQUEMINES-
UPPER ST. BERNARD-UPPER TERREBONNE-LOWER TERREBONNE-
LOWER LAFOURCHE-LOWER JEFFERSON-LOWER PLAQUEMINES-
LOWER ST. BERNARD-WILKINSON-AMITE-PIKE-WALTHALL-PEARL RIVER-
HANCOCK-HARRISON-JACKSON-
611 PM CDT THU MAR 26 2009

THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF COASTAL WATERS
OF SOUTHEAST LOUISIANA AND SOUTH MISSISSIPPI...SOUTHEAST
LOUISIANA AND SOUTHERN MISSISSIPPI.

.DAY ONE...TONIGHT
SEVERE WEATHER...
A SLIGHT RISK OF SEVERE THUNDERSTORMS CONTINUES ACROSS SOUTHEAST
LOUISIANA AND SOUTHERN MISSISSIPPI. THE HIGHEST RISK OF SEVERE
THUNDERSTORM ACTIVITY WILL BE LATE THIS EVENING THROUGH EARLY
FRIDAY MORNING. THESE THUNDERSTORMS WILL DEVELOP ALONG A STALLED
FRONTAL BOUNDARY. OVERALL ATMOSPHERIC PROFILES ARE HIGHLY
FAVORABLE TO DAMAGING WINDS AND ISOLATED TORNADOES WITH THESE
SEVERE THUNDERSTORMS. A TORNADO WATCH IS IN EFFECT FOR THE ENTIRE
AREA UNTIL 1 AM CDT FRIDAY MORNING.

HEAVY RAINFALL...
ADDITIONAL HEAVY RAIN IS POSSIBLE THROUGH TONIGHT. SOME AREAS MAY
RECEIVE AN ADDITIONAL 3 INCHES OF RAIN BY FRIDAY MORNING. IF THIS
AMOUNT OF RAIN FALLS IN A SHORT PERIOD OF TIME...MINOR FLOODING OF
LOW LYING AREAS AND SOME ROADWAYS WILL OCCUR. A FLASH FLOOD WATCH
HAS BEEN ISSUED FOR THE ENTIRE AREA.

MARINE HAZARDS...
A SMALL CRAFT ADVISORY REMAINS IN EFFECT FOR THE GULF WATERS.
PERSISTENT SOUTHEAST WINDS AROUND 20 KNOTS WITH HIGHER GUSTS WILL
CONTINUE TO RESULT IN SWELL-ENHANCED SEA HEIGHTS OF 6 TO 9
FEET...MAINLY BEYOND 15 NAUTICAL MILES FROM SHORE. SMALL CRAFT
WILL NEED TO EXERCISE CAUTION OVER THE TIDAL LAKES.

COASTAL FLOODING...
MODERATE LONG FETCH SOUTHERLY WINDS OVER THE GULF WILL CONTINUE
TO KEEP TIDES 1 TO 2 FEET ABOVE NORMAL THROUGH TONIGHT.

RIVER FLOODING...
THE PEARL RIVER REMAINS ABOVE FLOOD STAGE AT BOGALUSA AND AT PEARL
RIVER. THE ATCHAFALAYA RIVER AT MORGAN CITY HAS RISEN TO FLOOD
STAGE. REFER TO THE LATEST RIVER FLOOD STATEMENTS FOR INFORMATION.

.DAYS TWO THROUGH SEVEN...FRIDAY THROUGH WEDNESDAY
SEVERE WEATHER...
A SLIGHT RISK OF SEVERE EXISTS FOR FRIDAY INTO EARLY SATURDAY
MORNING. THIS EVENT HAS THE POTENTIAL TO PRODUCE THE MOST
WIDESPREAD SEVERE WEATHER. HAZARDS ASSOCIATED WITH THESE SEVERE
THUNDERSTORMS WILL BE TORNADOES...LARGE HAIL...DAMAGING WINDS...
CONTINUOUS LIGHTNING AND VERY HEAVY RAINFALL.

HEAVY RAINFALL...
THERE IS THE POSSIBILITY OF ANOTHER HEAVY RAINFALL EVENT FRIDAY
NIGHT INTO SATURDAY MORNING. SOME AREAS MAY RECEIVE UP TO 3 INCHES
OF RAIN OVER THIS PERIOD. IF THIS AMOUNT OF RAIN FALLS IN A SHORT
PERIOD OF TIME...MINOR FLOODING OF LOW LYING AREAS AND SOME
ROADWAYS WILL OCCUR. A FLASH FLOOD WATCH WILL CONTINUE UNTIL
SATURDAY MORNING.

RIVER FLOODING...
THE PEARL RIVER REMAINS ABOVE FLOOD STAGE AT BOGALUSA AND AT PEARL
RIVER. ADDITIONALLY...THE ATCHAFALAYA RIVER AT MORGAN CITY HAS
RISEN TO FLOOD STAGE. THE PASCAGOULA RIVER AT GRAHAM FERRY IS ALSO
EXPECTED TO RISE TO FLOOD STAGE NEXT WEEK. REFER TO THE LATEST
RIVER FLOOD STATEMENTS FOR INFORMATION.

MARINE HAZARDS...
SOUTHEASTERLY WINDS WILL CONTINUE TO BRING LARGE SWELL TO THE
COASTAL WATERS THROUGH SATURDAY MORNING. WIND SPEEDS ARE EXPECTED
TO CONTINUE AROUND 20 KNOTS CAUSING SEAS TO REMAIN FROM 6 TO 9
FEET. A STRONG COLD FRONT IS FORECAST TO MOVE THROUGH THE COASTAL
WATERS SATURDAY MORNING.

COASTAL FLOODING...SOUTHEAST WINDS WILL CAUSE TIDES TO REMAIN 1
TO 2 FEET ABOVE NORMAL THROUGH FRIDAY NIGHT ALONG THE COAST.
HOWEVER...ASTRONOMICAL TIDES WILL BE AT THEIR HIGHEST FRIDAY AROUND
NOON...WHEN THE STRONGEST WINDS OVER THE GULF WATERS WILL COME JUST
AHEAD OF THE COLD FRONT FRIDAY AND FRIDAY NIGHT.  THESE WINDS WILL
CAUSE TIDES TO BE 2 FEET OR MORE ABOVE NORMAL LEVELS. FOR THIS
REASON...A COASTAL FLOOD WATCH HAS BEEN ISSUED FOR PORTIONS OF THE
LOUISIANA AND MISSISSIPPI COAST FOR THE DAYTIME HOURS ON FRIDAY.

.SPOTTER INFORMATION STATEMENT...
SPOTTER ACTIVATION IS REQUESTED AT THIS TIME.

ALSO...SPOTTERS...EMERGENCY MANAGERS AND FIRST RESPONDERS NEED TO
CONTINUE TO MONITOR THE LATEST FORECASTS AND STATEMENTS FOR
UPDATED INFORMATION ON SIGNIFICANT WEATHER THREATS FRIDAY AND
FRIDAY EVENING. IN ADDITION...PLEASE PASS ON ANY SEVERE WEATHER
OR FLOODING REPORTS.

In the hours before

Local storm report, Mar 26, 2:49 PM CDT, 4 hours 37 minutes before
PRELIMINARY LOCAL STORM REPORT...CORRECTED
NATIONAL WEATHER SERVICE NEW ORLEANS LA
249 PM CDT THU MAR 26 2009

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0343 AM     TORNADO          2 SSE SLIDELL           30.25N 89.76W
03/26/2009  F0               ST. TAMMANY        LA   NWS STORM SURVEY

            VERY WEAK TORNADO MOVED THROUGH THE SPRINGHILL
            SUBDIVISION. THE CICULATION WAS ONLY ABOUT 25 YARDS WIDE
            WITH A PATH LENGTH OF 250 YARDS. THERE WAS MINOR TREE
            DAMAGE AND YARD ITEMS BLOWN AROUND. ESTIMATED WIND SPEED
            ONLY AROUND 65 MPH.

&&

CBANNAN
Local storm report, Mar 26, 4:01 PM CDT, 3 hours 25 minutes before
PRELIMINARY LOCAL STORM REPORT...CORRECTED
NATIONAL WEATHER SERVICE NEW ORLEANS LA
401 PM CDT THU MAR 26 2009

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0158 AM     TORNADO          2 E INDEPENDENCE        30.64N 90.47W
03/26/2009  F1               TANGIPAHOA         LA   NWS STORM SURVEY

            *** 1 INJ *** NWS GROUND STORM SURVEY INDICATED TORNADO
            PATH APPROXIMTELY 0.75 LONG AND 50 YARDS WIDE IN VICINITY
            OF SCHOOL ROAD AND HIGHWAY 40. 7 HOMES DAMAGED...1 MOBILE
            HOME DESTROYED AND 1 TRAILER HEAVILY DAMAGED.1 MINOR
            INJURY WAS REPORTED. SEVERAL LARGE TREES UPROOTED OR
            TIPPED OVER. MAXIMUM WIND ESTIMATED IN THE 100-110 MPH
            RANGE... UPPER END OF EF1 SCALE.

&&

CBANNAN
Local storm report, Mar 26, 4:33 PM CDT, 2 hours 53 minutes before
PRELIMINARY LOCAL STORM REPORT...CORRECTED
NATIONAL WEATHER SERVICE NEW ORLEANS LA
433 PM CDT THU MAR 26 2009

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0533 AM     TORNADO          PASCAGOULA              30.37N 88.55W
03/26/2009  F0               JACKSON            MS   LAW ENFORCEMENT

            NUMEROUS REPORTS OF DAMAGE IN THE CITY OF PASCAGOULA
            AROUND TUCKER AND 8TH STREET AND TAYLOR STREET.
            PASCAGOULA HIGH SCHOOL HAD SCATTERED DAAMGE. THE SCORE
            BOARD ON THE FOOTBALL FIELD WAS BLOWN DOWN...NUMEROUS
            FENCES AND DEBRIS SCATTERED ACROSS THE FIELD. TRAFFIC
            LIGHTS DAMAGED AND SEVERAL TREES BLOWN DOWN. ALSO A
            TRAMPOLINE WAS BLOWN ONTO A VAN. EF0 MAXIMUM WINDS WERE
            NEAR 75 MPH WITH A PATH LENGTH 250 YARDS AND MAXIMUM
            WIDTH 50 YARDS.

&&

CBANNAN
Local storm report, Mar 26, 4:36 PM CDT, 2 hours 50 minutes before
PRELIMINARY LOCAL STORM REPORT...SUMMARY
NATIONAL WEATHER SERVICE NEW ORLEANS LA
436 PM CDT THU MAR 26 2009

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

1240 AM     TSTM WND DMG     WOODVILLE               31.10N 91.30W
03/26/2009                   WILKINSON          MS   LAW ENFORCEMENT

            NUMEROUS TREES DOWN AND POWER OUTAGES ALONG HIGHWAY 24W
            NEAR WOODVILLE. RELAYED PUBLIC REPORT.

1258 AM     TSTM WND DMG     LIBERTY                 31.16N 90.80W
03/26/2009                   AMITE              MS   EMERGENCY MNGR

            200 FT OF ROOFING PEELED OFF OF SCHOOL. NUMEROUS TREES
            DOWN.

0105 AM     TSTM WND DMG     BATON ROUGE             30.45N 91.13W
03/26/2009                   EAST BATON ROUGE   LA   PUBLIC

            LARGE LIMBS DOWN. RECEIVED VIA WEB STORM REPORT ENTRY.

0105 AM     TSTM WND DMG     BRUSLY                  30.39N 91.25W
03/26/2009                   WEST BATON ROUGE   LA   EMERGENCY MNGR

            NUMEROUS POWER POLES BLOWN TO THE THE EAST WITH MULTIPLE
            TRANSFORMERS BLOWN OFF THE POLES. ALSO SCATTERED TREES
            DOWN AND A ROOF BLOWN OFF A HOUSE ALONG ANTONIO RD AND
            HWY 1.

0107 AM     TSTM WND GST     BATON ROUGE AIRPORT     30.53N 91.15W
03/26/2009  M67.00 MPH       EAST BATON ROUGE   LA   ASOS

            POWER OUTAGES ACROSS BATON ROUGE.

0113 AM     TSTM WND DMG     BATON ROUGE             30.45N 91.13W
03/26/2009                   EAST BATON ROUGE   LA   BROADCAST MEDIA

            NUMEROUS TREES AND POWER LINES DOWN THROUGHOUT THE CITY.
            TREE SITTING ON HOUSE ON STANFORD AVE. SIGNIFICANT TREE
            DAMAGE AROUND LSU CAMPUS AND IN THE SOUTHDOWNS AREA.
            SCATTERED COMMERCIAL SIGNS ALONG PERKINS RD WERE BLOWN
            DOWN. SIGNIFICANT STRUCTURAL DAMAGE TO THE LSU FOOTBALL
            INDOOR FACILITY. SURVEY CREW DETERMINED MAXIMUM SUSTAINED
            WINDS NEAR 80 MPH. BATON ROUGE ASOS NORTH OF THE WORST
            DAMAGE RECORDED 67 MPH.

0135 AM     TSTM WND DMG     WATSON                  30.58N 90.95W
03/26/2009                   LIVINGSTON         LA   LAW ENFORCEMENT

            WIDESPREAD TREE AND POWER LINE DAMAGE ACROSS THE COUNTY.
            SOME OF THE WORST WAS ACROSS STATE HWY 1020 WHERE
            POWERLINES AND TREES BLOCKED THE ROAD. ALSO MORE
            CONCENTRATED TREE AND POWERLINE DAMAGE WAS REPORTED ALONG
            HWY 447 SOUTH OF I 12 AND ALONG HOOD RD SOUTH OF WALKER.

0158 AM     TORNADO          2 E INDEPENDENCE        30.64N 90.47W
03/26/2009  F1               TANGIPAHOA         LA   NWS STORM SURVEY

            *** 1 INJ *** NWS GROUND STORM SURVEY INDICATED TORNADO
            PATH APPROXIMTELY 0.75 LONG AND 50 YARDS WIDE IN VICINITY
            OF SCHOOL ROAD AND HIGHWAY 40. 7 HOMES DAMAGED...1 MOBILE
            HOME DESTROYED AND 1 TRAILER HEAVILY DAMAGED.1 MINOR
            INJURY WAS REPORTED. SEVERAL LARGE TREES UPROOTED OR
            TIPPED OVER. MAXIMUM WIND ESTIMATED IN THE 100-110 MPH
            RANGE... UPPER END OF EF1 SCALE.

0205 AM     TSTM WND DMG     10 W FOLSOM             30.63N 90.37W
03/26/2009                   TANGIPAHOA         LA   LAW ENFORCEMENT

            POWER POLE DOWN ALONG HIGHWAY 40 NEAR LORANGER.

0234 AM     TSTM WND DMG     BATON ROUGE             30.45N 91.13W
03/26/2009                   EAST BATON ROUGE   LA   UTILITY COMPANY

            ENTERGY LOUISIANA REPORTS 14600 CUSTOMERS WITHOUT POWER
            IN EAST BATON ROUGE PARISH.

0235 AM     TSTM WND DMG     AMITE                   30.73N 90.51W
03/26/2009                   TANGIPAHOA         LA   UTILITY COMPANY

            ENTERGY LOUISIANA REPORTING MORE THAN 11000 CUSTOMERS
            WITHOUT POWER PARISH-WIDE.

0310 AM     TSTM WND DMG     6 NE PICAYUNE           30.59N 89.61W
03/26/2009                   PEARL RIVER        MS   EMERGENCY MNGR

            TREES REPORTED DOWN ALONG I-59 AROUND MILE MARKER 10 NEAR
            TOWN OF CARRIERE. ALSO POWER OUTAGES REPORTED AROUND
            PICAYUNE.

0343 AM     TORNADO          2 SSE SLIDELL           30.25N 89.76W
03/26/2009  F0               ST. TAMMANY        LA   NWS STORM SURVEY

            VERY WEAK TORNADO MOVED THROUGH THE SPRINGHILL
            SUBDIVISION. THE CICULATION WAS ONLY ABOUT 25 YARDS WIDE
            WITH A PATH LENGTH OF 250 YARDS. THERE WAS MINOR TREE
            DAMAGE AND YARD ITEMS BLOWN AROUND. ESTIMATED WIND SPEED
            ONLY AROUND 65 MPH.

0411 AM     TSTM WND DMG     2 WSW WAVELAND          30.28N 89.42W
03/26/2009                   HANCOCK            MS   LAW ENFORCEMENT

            A FEW TREES DOWN ALONG LOWER BAY RD JUST TO THE WEST
            SOUTHWEST OF WAVELAND.

0533 AM     TORNADO          PASCAGOULA              30.37N 88.55W
03/26/2009  F0               JACKSON            MS   LAW ENFORCEMENT

            NUMEROUS REPORTS OF DAMAGE IN THE CITY OF PASCAGOULA
            AROUND TUCKER AND 8TH STREET AND TAYLOR STREET.
            PASCAGOULA HIGH SCHOOL HAD SCATTERED DAAMGE. THE SCORE
            BOARD ON THE FOOTBALL FIELD WAS BLOWN DOWN...NUMEROUS
            FENCES AND DEBRIS SCATTERED ACROSS THE FIELD. TRAFFIC
            LIGHTS DAMAGED AND SEVERAL TREES BLOWN DOWN. ALSO A
            TRAMPOLINE WAS BLOWN ONTO A VAN. EF0 MAXIMUM WINDS WERE
            NEAR 75 MPH WITH A PATH LENGTH 250 YARDS AND MAXIMUM
            WIDTH 50 YARDS.

0535 AM     TSTM WND DMG     PASCAGOULA              30.37N 88.55W
03/26/2009                   JACKSON            MS   LAW ENFORCEMENT

            TREE DOWN ON TAYLOR ROAD IN THE CITY OF PASCAGOULA.

&&

CBANNAN
Special weather statement, Mar 26, 6:00 PM CDT, 1 hour 26 minutes before
MSZ077-270100-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE NEW ORLEANS LA
600 PM CDT THU MAR 26 2009

...LINE OF STRONG THUNDERSTORMS MOVING EAST AFFECTING PEARL RIVER
COUNTY...

AT 658 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
LINE OF STRONG THUNDERSTORMS...8 MILES NORTHEAST OF PICAYUNE...OR
ABOUT 4 MILES SOUTHEAST OF MCNEIL. WHILE INDIVIDUAL STORMS ALONG THE
LINE WAS MOVING EAST AT 25 MPH...THE LINE WAS DRIFTING NORTH ACROSS
PEARL RIVER COUNTY.

THE PRIMARY THREAT FROM THIS LINE OF STORMS IS PEA TO MARBLE SIZE
HAIL. SEEK SHELTER IN A SAFE HOME OR BUILDING UNTIL THIS STORM HAS
PASSED. PEARL RIVER SHERIFFS OFFICE REPORTED PEA TO MARBLE SIZED
HAIL IN PICAYUNE AT 667 PM CDT.

THIS STORM COULD PRODUCE RAINFALL AMOUNTS OF ONE TO TWO INCHES IN A
SHORT PERIOD OF TIME...RESULTING IN PONDING OF WATER AROUND LOW LYING
ROADWAYS. REMEMBER...DO NOT DRIVE YOUR VEHICLE INTO WATER COVERED
ROADWAYS. THE DEPTH MAY BE TOO GREAT TO ALLOW A SAFE CROSSING.

A TORNADO WATCH REMAINS IN EFFECT UNTIL 100 AM FRIDAY MORNING FOR
SOUTHEAST LOUISIANA AND SOUTHERN MISSISSIPPI.

BE PREPARED TO TAKE QUICK ACTION IF A WARNING IS ISSUED. STAY TUNED
TO NOAA WEATHER RADIO OR YOUR FAVORITE LOCAL MEDIA OUTLETS FOR
FURTHER DETAILS OR UPDATES FROM THE NATIONAL WEATHER SERVICE.

24/RR
Special weather statement, Mar 26, 6:32 PM CDT, 54 minutes before
LAZ034-035-270030-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE NEW ORLEANS LA
632 PM CDT THU MAR 26 2009

...CLUSTER OF STRONG THUNDERSTORMS MOVING NORTHEAST AFFECTING POINTE
COUPEE PARISH...WEST FELICIANA PARISH...

AT 631 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
CLUSTER OF STRONG THUNDERSTORMS NEAR MELVILLE...OR ABOUT 8 MILES WEST
OF MORGANZA...MOVING NORTHEAST AT 30 MPH.

THE CLUSTER OF STRONG THUNDERSTORMS WILL AFFECT AREAS IN AND
AROUND...BATCHELOR...MORGANZA...NEW ROADS...ST. FRANCISVILLE AND
WAKEFIELD

THE PRIMARY THREAT FROM THESE STORMS IS PEA TO MARBLE SIZE HAIL AND
VERY HEAVY RAINFALL. SEEK SHELTER IN A SAFE HOME OR BUILDING UNTIL
THESE STORMS HAVE PASSED.

A TORNADO WATCH REMAINS IN EFFECT UNTIL 100 AM CDT FRIDAY MORNING FOR
SOUTHEAST LOUISIANA AND SOUTHERN MISSISSIPPI.

The office that day

Everything else NWS New Orleans, LA issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Mar 26, 7:33 PM CDTAreal Flood AdvisoryLIXEast Feliciana, West Feliciana100 days
Mar 26, 7:56 PM CDTSevere Thunderstorm WarningLIXEast Feliciana, Saint Helena49 min
Mar 26, 8:03 PM CDTTornado WarningLIXEast Feliciana, Saint Helena27 min
Mar 26, 8:22 PM CDTRiver Flood WarningLIXSaint Tammany8 days
Mar 26, 8:27 PM CDTTornado WarningLIXSaint Helena33 min
Mar 26, 8:59 PM CDTSpecial Marine WarningLIX31 min
Mar 26, 10:33 PM CDTAreal Flood AdvisoryLIXAscension, Assumption, East Baton Rouge, East Feliciana, Iberville, Lafourche and 8 more104 days
Mar 26, 10:49 PM CDTSpecial Marine WarningLIX56 min
Mar 26, 10:51 PM CDTTornado WarningLIXAscension, Assumption, Livingston, Saint James, Saint John the Baptist24 min
Mar 26, 11:00 PM CDTAreal Flood AdvisoryLIXSaint Tammany104 days
Mar 26, 11:00 PM CDTSevere Thunderstorm WarningLIXTerrebonne45 min
Mar 26, 11:14 PM CDTSpecial Marine WarningLIX61 min
Mar 26, 11:15 PM CDTSevere Thunderstorm WarningLIXAscension, Jefferson, Livingston, Saint Charles, Saint James, Saint John the Baptist and 1 more30 min
Mar 26, 11:26 PM CDTSevere Thunderstorm WarningLIXAscension, Assumption, Iberville, Lafourche, Saint James, Terrebonne49 min
Mar 26, 11:29 PM CDTTornado WarningLIXLivingston, Tangipahoa31 min
Mar 26, 11:46 PM CDTSevere Thunderstorm WarningLIXLafourche, Terrebonne29 min
Mar 27, 12:00 AM CDTSevere Thunderstorm WarningLIXAscension, Jefferson, Lafourche, Livingston, Orleans, Plaquemines and 4 more60 min
Mar 27, 12:26 AM CDTSevere Thunderstorm WarningLIXAssumption, Lafourche, Terrebonne64 min
Mar 27, 12:30 AM CDTSpecial Marine WarningLIX60 min
Mar 27, 12:44 AM CDTSevere Thunderstorm WarningLIXOrleans, Saint Tammany, Tangipahoa53 min
Mar 27, 12:53 AM CDTSevere Thunderstorm WarningLIXJefferson, Lafourche, Orleans, Plaquemines, Saint Bernard, Terrebonne67 min
Mar 27, 12:57 AM CDTSpecial Marine WarningLIX93 min
Mar 27, 1:03 AM CDTAreal Flood AdvisoryLIXEast Baton Rouge, East Feliciana, Iberville, Livingston, Pointe Coupee, West Baton Rouge and 1 more111 days
Mar 27, 1:15 AM CDTFlash Flood WarningLIXLafourche, Terrebonne3 hr
Mar 27, 1:43 AM CDTTornado WarningLIXPlaquemines17 min
Mar 27, 1:47 AM CDTSpecial Marine WarningLIX88 min
Mar 27, 2:08 AM CDTFlash Flood WarningLIXJefferson, Lafourche, Orleans, Plaquemines, Saint Bernard, Saint Charles3 hr
Mar 27, 2:23 AM CDTSpecial Marine WarningLIX97 min
Mar 27, 3:20 AM CDTSevere Thunderstorm WarningLIXPlaquemines40 min
Mar 27, 4:09 AM CDTRiver Flood WarningLIXSaint Tammany57 hr
Mar 27, 4:32 AM CDTSpecial Marine WarningLIX118 min
Mar 27, 5:00 AM CDTFlash Flood WarningLIXJefferson, Lafourche, Plaquemines, Saint Bernard, Saint Charles3 hr
Mar 27, 5:11 AM CDTFlash Flood WarningLIXJefferson, Orleans, Plaquemines, Saint Bernard, Saint Charles3 hr
Mar 27, 5:53 AM CDTSevere Thunderstorm WarningLIXPlaquemines67 min
Mar 27, 5:58 AM CDTCoastal Flood WarningLIXSaint Bernard, Saint John the Baptist34 hr
Mar 27, 6:29 AM CDTSpecial Marine WarningLIX2 hr
Mar 27, 6:40 AM CDTRiver Flood WarningLIXTangipahoa2 hr
Mar 27, 6:40 AM CDTRiver Flood WarningLIXTangipahoa6 days
Mar 27, 6:41 AM CDTRiver Flood WarningLIXSaint Helena4 days
Mar 27, 7:21 AM CDTSevere Thunderstorm WarningLIXPlaquemines39 min
Mar 27, 7:23 AM CDTRiver Flood WarningLIXWashington4 days
Mar 27, 8:13 AM CDTSevere Thunderstorm WarningLIXPlaquemines62 min
Mar 27, 8:27 AM CDTAreal Flood WarningLIXJefferson, Lafourche, Plaquemines, Saint Charles, Terrebonne6 hr
Mar 27, 8:41 AM CDTRiver Flood WarningLIXSaint Helena60 hr
Mar 27, 9:09 AM CDTSpecial Marine WarningLIX96 min
Mar 27, 9:17 AM CDTTornado WarningLIXPlaquemines28 min
Mar 27, 10:58 AM CDTSpecial Marine WarningLIX92 min
Mar 27, 1:58 PM CDTSpecial Marine WarningLIX92 min
Mar 27, 3:03 PM CDTSpecial Marine WarningLIX43 min
Mar 27, 6:17 PM CDTTornado WarningLIXWest Feliciana28 min
Mar 27, 6:46 PM CDTSevere Thunderstorm WarningLIXEast Feliciana, West Feliciana59 min
Mar 27, 6:53 PM CDTRiver Flood WarningLIXTangipahoa61 hr

Nearby

Severe Thunderstorm Warnings in Louisiana, 2009Every severe thunderstorm warning in 2009

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.