Alert archive / Louisiana / Severe Thunderstorm Warnings in 2014
Severe Thunderstorm Warning 32, NWS New Orleans, LA
NWS New Orleans, LA issued this severe thunderstorm warning at Apr 14, 2014, 8:39 PM CDT for Terrebonne Parish, Louisiana. It was in force for 66 min. No storm report in the archive falls inside the area while it was in force.
The area
The counties it named.
The facts
- Issued
- Apr 14, 2014, 8:39 PM CDT (01:39 UTC)
- Expired
- Apr 14, 2014, 9:45 PM CDT
- In force
- 66 min
- Issued by
- NWS New Orleans, LA
- Area
- Storm-based polygon
County Terrebonne Parish, LA
The watch it was issued in
The SPC watch in force over the same counties when this warning went out.
| Issued | Product | Office | Lasted |
|---|---|---|---|
| Apr 14, 1:11 PM CDT | Severe Thunderstorm Watch | SPC | 10 hr |
The nearest sounding before it
Jackson, MS (KJAN), launched 00:00Z, 1.7 hours before the alert went out and 339 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.
- Mixed-layer CAPE
- 0 J/kg
- Mixed-layer CIN
- No buoyant parcel
- Mixed-layer LCL
- 620 m above ground
- 0-6 km bulk shear
- 55 kt
- 0-1 km storm-relative helicity
- 16 m²/s²
- 0-3 km storm-relative helicity
- 256 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
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 Apr 14, 6:19 PM CDT, 2 hours 20 minutes earlier.
Area forecast discussion, Apr 14, 6:19 PM CDT, 2 hours 20 minutes before
AREA FORECAST DISCUSSION...UPDATED
NATIONAL WEATHER SERVICE NEW ORLEANS LA
619 PM CDT MON APR 14 2014
.UPDATE...
TO ADD WATCH HEADLINES FOR EXTENSION OF WS 81...NOW TO INCLUDE ALL
OF THE CWA UNTIL 9 PM.
&&
.PREV DISCUSSION... /ISSUED 426 PM CDT MON APR 14 2014/
SHORT TERM...
TONIGHT THROUGH WEDNESDAY...
A STRONG COLD FRONT AND ASSOCIATED UPPER LEVEL TROUGH WILL
CONTINUE TO IMPACT THE FORECAST AREA THROUGH THE SHORT TERM
PERIOD. INITIALLY...THE COMBINATION OF INCREASED OVERALL
INSTABILITY AND STRONG FORCING WILL CONTINUE TO PRODUCE BANDS OF
SHOWER AND THUNDERSTORM ACTIVITY THROUGH THE OVERNIGHT HOURS. HAVE
KEPT IN CATEGORICAL POPS FOR THE EVENING HOURS...WITH A TREND
TOWARD DECREASING COVERAGE FROM WEST TO EAST LATE TONIGHT. LOCALLY
HEAVY RAINFALL WILL BE POSSIBLE THROUGH THE EVENING HOURS...DUE TO
COMBINATION OF HIGH PRECIPITATION EFFICIENCY AND PW VALUES RUNNING
150-200 PERCENT OF NORMAL. GIVEN THESE CONDITIONS...HAVE KEPT THE
FLASH FLOOD WATCH IN PLACE FOR THE EVENING HOURS. THERE WILL ALSO
CONTINUE TO BE A MARGINAL THREAT FOR SEVERE WEATHER THROUGH THE
EVENING HOURS. THE WIND FIELD WILL TURN MORE UNIDIRECTIONAL DURING
THE EVENING HOURS...SO THE PRIMARY SEVERE THREAT WILL BE LOCALLY
STRONG WIND GUSTS AND HAIL. IN FACT...MUCH OF THE THUNDERSTORM
ACTIVITY WILL BE POST-FRONTAL AND AS A RESULT ELEVATED. OVERALL
LAPSE RATES WILL BE MORE FAVORABLE FOR HAIL DEVELOPMENT WITH THIS
ELEVATED POST-FRONTAL CONVECTION.
THE OTHER SIGNIFICANT IMPACT WILL BE A PERIOD OF ENHANCED WINDS IN
THE IMMEDIATE WAKE OF THE FRONT ON THE SOUTHSHORE OF LAKE
PONTCHARTRAIN. STRONG BOUNDARY LAYER WINDS OF 25 TO 30 KNOTS WILL
EASILY MIX DOWN TO THE SURFACE AS IT MOVES OVER THE WARMER WATERS
OF LAKE PONTCHARTRAIN. THESE WINDS WILL THEN SPREAD OVER METRO NEW
ORLEANS TONIGHT. AS THE OVERALL PRESSURE GRADIENT WEAKENS DURING
THE DAY TOMORROW...WINDS WILL FALL BACK BELOW 20 KNOTS. GIVEN THE
EXPECTED WINDS...A WIND ADVISORY IS IN EFFECT FOR THE SOUTHSHORE.
ANOTHER IMPACT FROM THESE STRONG WINDS WILL BE LARGE BATTERING
WAVES IMPACTING THE ORLEANS PARISH SHORELINE ALONG LAKESHORE
DRIVE. GIVEN THESE EXPECTED CONDITIONS...HAVE ISSUED A COASTAL
FLOOD ADVISORY FOR TONIGHT AND EARLY TOMORROW FOR AREAS OUTSIDE OF
THE LEVEE PROTECTION ALONG THE LAKEFRONT IN NEW ORLEANS.
TEMPERATURES WILL COOL DRAMATICALLY AS A DEEP COLD POOL
OVERSPREADS THE FORECAST AREA TONIGHT. LOWS WILL COOL INTO THE 40S
AND 50S TONIGHT...AND WILL STRUGGLE TO RISE INTO THE LOWER 60S
TOMORROW AFTERNOON. WITH CLEAR SKIES...LOW HUMIDITY...AND LIGHTER
WINDS EXPECTED TOMORROW...CONDITIONS WILL BE PRIME TO SEE
OVERNIGHT LOWS COOL INTO THE LOWER TO MIDDLE 30S ACROSS THE
NORTHERN HALF OF THE FORECAST AREA. CONDITIONS WILL BE VERY CLOSE
TO FREEZING...BUT AT THIS TIME A FREEZE IS NOT ANTICIPATED.
HOWEVER...FROST COULD BE A CONCERN. THE HEART OF THE COLD POOL
WILL BEGIN TO PULL TO THE EAST BY WEDNESDAY...ALLOWING FOR SOME
MODERATION IN TEMPERATURES. HOWEVER...READINGS WILL REMAIN A GOOD
10 TO 15 DEGREES BELOW AVERAGE.
LONG TERM...
THURSDAY THROUGH MONDAY...
AFTER REVIEWING THE MEDIUM RANGE GUIDANCE...HAVE DECIDED TO TOSS
OUT THE GFS MODEL RUN AND WENT EXCLUSIVELY WITH THE EURO. WITH
THAT IN MIND...EXPECT A FAST MOVING UPPER LEVEL TROUGH TO SLIDE
THROUGH THE MIDWEST AND TENNESSEE VALLEYS THURSDAY INTO FRIDAY.
THE STRONGEST DYNAMICS WITH THIS SYSTEM WILL REMAIN WELL NORTH OF
THE AREA...BUT THERE SHOULD BE ENOUGH OVERALL OMEGA AND MOISTURE
IN PLACE TO SPARK OFF SOME SCATTERED SHOWERS AND THUNDERSTORMS
BEGINNING THURSDAY AFTERNOON AND PERSISTING INTO FRIDAY MORNING.
IN THE WAKE OF THIS UPPER LEVEL TROUGH A VERY STRONG DEEP LAYER
RIDGE AXIS WILL SETTLE OVER THE AREA FOR THE WEEKEND. THIS RIDGE
WILL EFFECTIVELY CAP OFF ANY CONVECTIVE RISK FOR THE WEEKEND AND
ALSO ALLOW TEMPERATURES TO SURGE BACK INTO THE UPPER 70S AND LOWER
80S FOR SATURDAY AND SUNDAY. ANOTHER WEAK SHORTWAVE TROUGH WILL
APPROACH THE REGION ON MONDAY BRINGING ANOTHER CHANCE OF SHOWERS
TO THE AREA.
AVIATION...
IN GENERAL...MVFR RESTRICTIONS CAN BE EXPECTED FOR ALL OF THE
TERMINALS THROUGH TOMORROW MORNING. CEILINGS WILL GENERALLY RANGE
FROM 1500-2500 FEET AND VISIBILITIES WILL FLUCTUATE FROM 3 TO 5
MILES. HOWEVER...PERIODS OF CONVECTION WILL IMPACT ALL OF THE
TERMINALS THROUGH AROUND 06Z TONIGHT. THIS CONVECTION WILL BRING
REDUCED VISIBILITIES OF 1 TO 3 MILES TO THE TERMINALS...RESULTING
IN IFR RESTRICTIONS FOR BRIEF PERIODS OF TIME. ADDITIONALLY...THERE
MAY BE A WINDOW OF IFR CEILINGS DEVELOPING FROM 06Z TO 14Z TONIGHT
AS COLDER AIR ADVECTING IN AT THE SURFACE FORMS AN ELEVATED
INVERSION. CONDITIONS WILL BEGIN TO IMPROVE AFTER 15Z
TOMORROW...AS DRIER AIR MIXES DOWN. THIS WILL BRING VFR CONDITIONS
TO THE TERMINALS. THERE WILL ALSO BE STRONG WINDS IMPACTING KNEW
AND KMSY THROUGH THE PERIOD. NORTH WINDS OF 30 TO 35 KNOTS WILL BE
POSSIBLE AT KNEW.
MARINE...
GALE WARNINGS REMAIN IN PLACE FOR ALL OF THE COASTAL WATERS
BEGINNING LATE IN THE EVENING AND PERSISTING THROUGH TOMORROW
MORNING. STRONG GRADIENT WINDS ALOFT OF 30 TO 35 KNOTS WILL
EASILY MIX DOWN TO THE SURFACE TONIGHT OVER THE WARMER MARINE ZONE
WATERS. THESE STRONG WINDS WILL PRODUCE VERY DANGEROUS SEAS OF 7
TO 10 FEET IN THE OFFSHORE WATERS AND ROUGH WAVES OF 4 TO 6 FEET
IN THE SOUNDS AND LAKES. CONDITIONS WILL IMPROVE A BIT DURING THE
DAY TOMORROW AS THE OVERALL PRESSURE GRADIENT WEAKENS.
HOWEVER...SMALL CRAFT CONDITIONS WILL PERSIST INTO TOMORROW NIGHT.
THE SURFACE HIGH WILL SETTLE OVER THE SOUTHEAST ON WEDNESDAY AND
LINGER OVER THE REGION THROUGH WEEKEND. THERE WILL BE SOME
TIGHTENING OF THE GRADIENT ON THURSDAY AND FRIDAY AS A LOW
PRESSURE SYSTEM MOVES THROUGH THE GULF OF MEXICO. THIS WILL PUSH
CONDITIONS BACK INTO SMALL CRAFT ADVISORY RANGE FROM THURSDAY
THROUGH FRIDAY EVENING. WINDS WILL BEGIN TO WANE FRIDAY NIGHT INTO
SATURDAY AS THE LOW PULLS TO THE EAST AND THE OVERALL PRESSURE
GRADIENT EASES.
DECISION SUPPORT...
DSS CODE...YELLOW.
DEPLOYED...NONE.
ACTIVATION...NONE.
ACTIVITIES...SLURRY SUPPORT
MONITORING RIVER FLOODING AND SEVERE THUNDERSTORM/HEAVY RAIN
THREATS.
DECISION SUPPORT SERVICES (DSS) CODE LEGEND
GREEN = NO WEATHER IMPACTS THAT REQUIRE ACTION
BLUE = LONG FUSED WATCH/WARNING/ADVISORY IN EFFECT OR HIGH
VISIBILITY EVENT
YELLOW = HEIGHTENED IMPACTS WITH SHORT FUSED
WATCH/WARNING/ADVISORY ISSUANCES; RADAR SUPPORT
ORANGE = HIGH IMPACTS - SLIGHT TO MODERATE RISK SEVERE; NEARBY
TROPICAL EVENTS; HAZMAT OR OTHER LARGE EPISODES
RED = FULL ENGAGEMENT FOR MODERATE TO HIGH RISK SVR
AND/OR DIRECT TROPICAL THREATS; EVENTS OF NATIONAL
SIGNIFICANCE
&&
.PRELIMINARY POINT TEMPS/POPS...
MCB 44 61 33 64 / 70 10 0 0
BTR 46 61 34 66 / 70 10 0 0
ASD 49 62 33 65 / 90 10 0 0
MSY 50 61 43 65 / 90 10 0 0
GPT 52 63 37 65 / 90 10 0 0
PQL 52 62 34 65 / 90 10 0 0
&&
.LIX WATCHES/WARNINGS/ADVISORIES...
LA...FLASH FLOOD WATCH UNTIL 11 PM MONDAY FOR THE FOLLOWING ZONES:
ASSUMPTION...LOWER JEFFERSON...LOWER LAFOURCHE...LOWER
PLAQUEMINES...LOWER ST. BERNARD...LOWER
TERREBONNE...ORLEANS...ST. CHARLES...ST. JAMES...ST. JOHN
THE BAPTIST...ST. TAMMANY...UPPER JEFFERSON...UPPER
LAFOURCHE...UPPER PLAQUEMINES...UPPER ST. BERNARD...AND
UPPER TERREBONNE.
COASTAL FLOOD ADVISORY UNTIL 1 PM TUESDAY FOR THE FOLLOWING
ZONES: AND ORLEANS.
WIND ADVISORY FROM 10 PM MONDAY TO 10 AM TUESDAY FOR THE
FOLLOWING ZONES: LOWER JEFFERSON...LOWER LAFOURCHE...LOWER
PLAQUEMINES...LOWER ST. BERNARD...ORLEANS...ST.
CHARLES...ST. JOHN THE BAPTIST...UPPER JEFFERSON...UPPER
PLAQUEMINES...AND UPPER ST. BERNARD.
GM...GALE WARNING FROM 10 PM MONDAY TO 9 AM TUESDAY FOR THE FOLLOWING
ZONES: BRETON SOUND...CHANDELEUR SOUND...COASTAL WATERS
FROM BOOTHVILLE LA TO THE SOUTHWEST PASS OF THE MISSISSIPPI
RIVER OUT 20 NM...COASTAL WATERS FROM PASCAGOULA MS TO
STAKE ISLAND LA FROM 20 TO 60 NM...COASTAL WATERS FROM
PASCAGOULA MS TO STAKE ISLAND LA OUT 20 NM...COASTAL WATERS
FROM PORT FOURCHON TO LOWER ATCHAFALAYA RIVER FROM 20 TO 60
NM...COASTAL WATERS FROM PORT FOURCHON TO LOWER ATCHAFALAYA
RIVER OUT 20 NM...COASTAL WATERS FROM STAKE ISLAND LA TO
THE SOUTHWEST PASS OF THE MISSISSIPPI RIVER FROM 20 TO 60
NM...COASTAL WATERS FROM THE SOUTHWEST PASS OF THE
MISSISSIPPI RIVER TO PORT FOURCHON FROM 20 TO 60
NM...COASTAL WATERS FROM THE SOUTHWEST PASS OF THE
MISSISSIPPI RIVER TO PORT FOURCHON OUT 20 NM...LAKE
BORGNE...LAKE PONTCHARTRAIN AND LAKE MAUREPAS...AND
MISSISSIPPI SOUND.
SMALL CRAFT ADVISORY FROM 9 AM TUESDAY TO 6 AM WEDNESDAY FOR THE
FOLLOWING ZONES: BRETON SOUND...CHANDELEUR SOUND...COASTAL
WATERS FROM BOOTHVILLE LA TO THE SOUTHWEST PASS OF THE
MISSISSIPPI RIVER OUT 20 NM...COASTAL WATERS FROM
PASCAGOULA MS TO STAKE ISLAND LA FROM 20 TO 60 NM...COASTAL
WATERS FROM PASCAGOULA MS TO STAKE ISLAND LA OUT 20
NM...COASTAL WATERS FROM PORT FOURCHON TO LOWER ATCHAFALAYA
RIVER FROM 20 TO 60 NM...COASTAL WATERS FROM PORT FOURCHON
TO LOWER ATCHAFALAYA RIVER OUT 20 NM...COASTAL WATERS FROM
STAKE ISLAND LA TO THE SOUTHWEST PASS OF THE MISSISSIPPI
RIVER FROM 20 TO 60 NM...COASTAL WATERS FROM THE SOUTHWEST
PASS OF THE MISSISSIPPI RIVER TO PORT FOURCHON FROM 20 TO
60 NM...COASTAL WATERS FROM THE SOUTHWEST PASS OF THE
MISSISSIPPI RIVER TO PORT FOURCHON OUT 20 NM...LAKE
BORGNE...LAKE PONTCHARTRAIN AND LAKE MAUREPAS...AND
MISSISSIPPI SOUND.
MS...FLASH FLOOD WATCH UNTIL 11 PM MONDAY FOR THE FOLLOWING ZONES:
HANCOCK...HARRISON...AND JACKSON.
GM...GALE WARNING FROM 10 PM MONDAY TO 9 AM TUESDAY FOR THE FOLLOWING
ZONES: BRETON SOUND...CHANDELEUR SOUND...COASTAL WATERS
FROM BOOTHVILLE LA TO THE SOUTHWEST PASS OF THE MISSISSIPPI
RIVER OUT 20 NM...COASTAL WATERS FROM PASCAGOULA MS TO
STAKE ISLAND LA FROM 20 TO 60 NM...COASTAL WATERS FROM
PASCAGOULA MS TO STAKE ISLAND LA OUT 20 NM...COASTAL WATERS
FROM PORT FOURCHON TO LOWER ATCHAFALAYA RIVER FROM 20 TO 60
NM...COASTAL WATERS FROM PORT FOURCHON TO LOWER ATCHAFALAYA
RIVER OUT 20 NM...COASTAL WATERS FROM STAKE ISLAND LA TO
THE SOUTHWEST PASS OF THE MISSISSIPPI RIVER FROM 20 TO 60
NM...COASTAL WATERS FROM THE SOUTHWEST PASS OF THE
MISSISSIPPI RIVER TO PORT FOURCHON FROM 20 TO 60
NM...COASTAL WATERS FROM THE SOUTHWEST PASS OF THE
MISSISSIPPI RIVER TO PORT FOURCHON OUT 20 NM...LAKE
BORGNE...LAKE PONTCHARTRAIN AND LAKE MAUREPAS...AND
MISSISSIPPI SOUND.
SMALL CRAFT ADVISORY FROM 9 AM TUESDAY TO 6 AM WEDNESDAY FOR THE
FOLLOWING ZONES: BRETON SOUND...CHANDELEUR SOUND...COASTAL
WATERS FROM BOOTHVILLE LA TO THE SOUTHWEST PASS OF THE
MISSISSIPPI RIVER OUT 20 NM...COASTAL WATERS FROM
PASCAGOULA MS TO STAKE ISLAND LA FROM 20 TO 60 NM...COASTAL
WATERS FROM PASCAGOULA MS TO STAKE ISLAND LA OUT 20
NM...COASTAL WATERS FROM PORT FOURCHON TO LOWER ATCHAFALAYA
RIVER FROM 20 TO 60 NM...COASTAL WATERS FROM PORT FOURCHON
TO LOWER ATCHAFALAYA RIVER OUT 20 NM...COASTAL WATERS FROM
STAKE ISLAND LA TO THE SOUTHWEST PASS OF THE MISSISSIPPI
RIVER FROM 20 TO 60 NM...COASTAL WATERS FROM THE SOUTHWEST
PASS OF THE MISSISSIPPI RIVER TO PORT FOURCHON FROM 20 TO
60 NM...COASTAL WATERS FROM THE SOUTHWEST PASS OF THE
MISSISSIPPI RIVER TO PORT FOURCHON OUT 20 NM...LAKE
BORGNE...LAKE PONTCHARTRAIN AND LAKE MAUREPAS...AND
MISSISSIPPI SOUND.
&&Hazardous weather outlook, Apr 14, 3:26 PM CDT, 5 hours 13 minutes before
HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE NEW ORLEANS LA 326 PM CDT MON APR 14 2014 GMZ530-532-534-536-538-550-552-555-557-570-572-575-577-LAZ034>037- 039-040-046>050-056>072-MSZ068>071-077-080>082-150830- LAKE PONTCHARTRAIN AND LAKE MAUREPAS-MISSISSIPPI SOUND- LAKE BORGNE-CHANDELEUR SOUND-BRETON SOUND- COASTAL WATERS FROM PORT FOURCHON TO LOWER ATCHAFALAYA RIVER OUT 20 NM- COASTAL WATERS FROM THE SOUTHWEST PASS OF THE MISSISSIPPI RIVER TO PORT FOURCHON OUT 20 NM- COASTAL WATERS FROM BOOTHVILLE LA TO THE SOUTHWEST PASS OF THE MISSISSIPPI RIVER OUT 20 NM- COASTAL WATERS FROM PASCAGOULA MS TO STAKE ISLAND LA OUT 20 NM- COASTAL WATERS FROM PORT FOURCHON TO LOWER ATCHAFALAYA RIVER FROM 20 TO 60 NM- COASTAL WATERS FROM THE SOUTHWEST PASS OF THE MISSISSIPPI RIVER TO PORT FOURCHON FROM 20 TO 60 NM- COASTAL WATERS FROM STAKE ISLAND LA TO THE SOUTHWEST PASS OF THE MISSISSIPPI RIVER FROM 20 TO 60 NM- COASTAL WATERS FROM PASCAGOULA MS TO STAKE ISLAND LA FROM 20 TO 60 NM-POINTE COUPEE-WEST FELICIANA-EAST FELICIANA-ST. HELENA- 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-NORTHERN TANGIPAHOA- SOUTHERN TANGIPAHOA-WILKINSON-AMITE-PIKE-WALTHALL-PEARL RIVER- HANCOCK-HARRISON-JACKSON- 325 PM CDT MON APR 14 2014 THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF SOUTHEAST LOUISIANA...SOUTH MISSISSIPPI AND THE ADJACENT COASTAL WATERS. .DAY ONE...THIS AFTERNOON AND TONIGHT A SEVERE THUNDERSTORM WATCH IS EFFECT FOR PARTS OF EAST CENTRAL LOUISIANA AND SOUTHWEST MISSISSIPPI UNTIL 9 PM. THIS INCLUDES THE CITIES OF BATON ROUGE...HAMMOND AND MCCOMB. THERE IS A SLIGHT RISK OF SEVERE THUNDERSTORMS ACROSS THE ENTIRE OUTLOOK AREA THIS AFTERNOON AND TONIGHT AS A COLD FRONT APPROACHES AND MOVES THROUGH THE REGION. THUNDERSTORMS ARE EXPECTED TO DEVELOP WITH DAYTIME HEATING IN THE AFTERNOON AND EARLY EVENING IN ADVANCE OF THE COLD FRONT. A FEW SEVERE THUNDERSTORMS WILL BE POSSIBLE WITH THE MAIN THREATS BEING DAMAGING WINDS AND POSSIBLY LARGE HAIL...HOWEVER AN ISOLATED TORNADO CANNOT BE RULED OUT. COPIOUS AMOUNTS OF MOISTURE WILL SUPPORT AREAS OF HEAVY RAINFALL THIS AFTERNOON AND EVENING. ANY AREAS THAT RECEIVE REPEAT PERIODS OF THUNDERSTORMS AND HEAVY RAINFALL COULD EXPERIENCE BRIEF FLASH FLOODING. THE MOST LIKELY AREAS FOR THIS ARE PARISHES ALONG AND TO THE SOUTH OF A GONZALES TO NEW ORLEANS LINE...AS WELL AS ST. TAMMANY PARISH AND THE MISSISSIPPI COASTAL COUNTIES. A FLASH FLOOD WATCH WILL BE IN EFFECT THIS AFTERNOON AND EVENING IN THESE AREAS. A RAPID TRANSITION TO MUCH COLDER AIR TONIGHT WILL RESULT IN WINDY CONDITIONS ACROSS AREAS SOUTH OF THE TIDAL LAKES AND NEAR THE SOUTHEAST LOUISIANA COAST. SUSTAINED NORTH WINDS OF 20 TO 30 MPH WITH GUSTS TO 40 MPH WILL BE POSSIBLE OVERNIGHT. A WIND ADVISORY WILL BE IN EFFECT FOR PARISHES SOUTH OF LAKE PONTCHARTRAIN THAT ARE EAST OF INTERSTATE 55 BETWEEN 10 PM TONIGHT AND 10 AM TUESDAY. THESE WINDY CONDITIONS WILL ALSO IMPACT THE MARINE AREA. A GALE WARNING WILL BE IN EFFECT TONIGHT INTO TUESDAY MORNING FOR MOST OF THE COASTAL WATERS INCLUDING THE TIDAL LAKES AND SOUNDS. IN ADDITION...A COASTAL FLOOD ADVISORY IS IN EFFECT THIS EVENING AND OVERNIGHT FOR ORLEANS PARISH. NUISANCE COAST FLOODING MAY EXIST OUTSIDE THE HURRICANE LEVEE PROTECTION TONIGHT. RIVER FLOOD WARNINGS ARE CURRENTLY IN EFFECT FOR THE PEARL RIVER AND THE PASCAGOULA RIVER. REFER TO THE LATEST RIVER FLOOD STATEMENTS FOR MORE DETAILS. .DAYS TWO THROUGH SEVEN...TUESDAY THROUGH SUNDAY A WIND ADVISORY WILL CONTINUE THROUGH MID-MORNING TUESDAY OVER PORTIONS OF SOUTHEAST LOUISIANA SOUTH OF LAKE PONTCHARTRAIN. A COASTAL FLOOD ADVISORY WILL CONTINUE THROUGH EARLY TUESDAY AFTERNOON FOR ORLEANS PARISH. NUISANCE COAST FLOODING MAY EXIST OUTSIDE THE HURRICANE LEVEE PROTECTION TUESDAY MORNING THROUGH EARLY TUESDAY AFTERNOON. A GALE WARNING IN EFFECT FOR MUCH OF THE COASTAL WATERS INCLUDING THE LAKES AND SOUNDS WILL BE REPLACED BY A SMALL CRAFT ADVISORY DURING THE MORNING HOURS ON TUESDAY. UNSEASONABLY COLD TEMPERATURES ARE EXPECTED ACROSS THE AREA TUESDAY NIGHT AND WEDNESDAY MORNING. MUCH OF SOUTHERN MISSISSIPPI AND PORTIONS OF SOUTHEAST LOUISIANA NORTH OF LAKE PONTCHARTRAIN ARE EXPECTED TO HAVE LOW TEMPERATURES IN THE MIDDLE AND UPPER 30S WEDNESDAY MORNING. FROM WEDNESDAY AFTERNOON THROUGH SUNDAY...HAZARDOUS WEATHER IS NOT EXPECTED AT THIS TIME. .SPOTTER INFORMATION STATEMENT... SPOTTER ACTIVATION IS REQUESTED FOR THIS AFTERNOON AND TONIGHT.
In the hours before
Special weather statement, Apr 14, 5:12 PM CDT, 3 hours 27 minutes before
LAZ046-049-050-056>060-142315- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE NEW ORLEANS LA 512 PM CDT MON APR 14 2014 ...STRONG THUNDERSTORM MOVING EAST AFFECTING ST. JAMES PARISH... ASCENSION PARISH...ST. JOHN THE BAPTIST PARISH...ASSUMPTION PARISH... LIVINGSTON PARISH...UPPER LAFOURCHE PARISH...IBERVILLE PARISH...ST. CHARLES PARISH... AT 506 PM CDT...NATIONAL WEATHER SERVICE METEOROLOGISTS DETECTED A STRONG THUNDERSTORM 11 MILES NORTHWEST OF STEPHENSVILLE...OR ABOUT 8 MILES SOUTHWEST OF PIERRE PART...MOVING EAST AT 40 MPH. THE PRIMARY THREATS FROM THIS STORM ARE FREQUENT LIGHTNING...SUB SEVERE HAIL UP TO NICKEL SIZE...AND WIND GUSTS TO NEAR 45 MPH...WHICH COULD DOWN TREE LIMBS AND BLOW AROUND UNSECURED SMALL OBJECTS. SEEK SHELTER IN A SAFE HOME OR BUILDING UNTIL THIS STORM HAS PASSED. 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 SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL 900 PM CDT MONDAY EVENING FOR SOUTHEAST LOUISIANA AND SOUTHERN MISSISSIPPI. FREQUENT LIGHTNING IS OCCURRING WITH THIS STORM. IF OUTDOORS...STAY AWAY FROM ISOLATED HIGH OBJECTS SUCH AS TREES. MOVE INDOORS IF POSSIBLE. WHEN INDOORS...STAY AWAY FROM WINDOWS AND DOORS AND AVOID USING TELEPHONES UNLESS IT IS AN EMERGENCY. TRY TO UNPLUG UNNECESSARY ELECTRICAL APPLIANCES BEFORE THE THUNDERSTORM APPROACHES. 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.
Special weather statement, Apr 14, 7:00 PM CDT, 1 hour 39 minutes before
LAZ040-059-061>064-068>070-MSZ077-080>082-150100- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE NEW ORLEANS LA 700 PM CDT MON APR 14 2014 ...LINE OF STRONG THUNDERSTORMS MOVING EAST AFFECTING PEARL RIVER COUNTY...UPPER LAFOURCHE PARISH...UPPER JEFFERSON PARISH...UPPER PLAQUEMINES PARISH...HANCOCK COUNTY...ST. TAMMANY PARISH...ORLEANS PARISH...UPPER ST. BERNARD PARISH...JACKSON COUNTY...LOWER PLAQUEMINES PARISH...LOWER ST. BERNARD PARISH...LOWER JEFFERSON PARISH...HARRISON COUNTY... AT 655 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A LINE OF STRONG THUNDERSTORMS...ALONG A LINE EXTENDING FROM PICAYUNE TO 9 MILES SOUTHEAST OF SLIDELL TO BELLE CHASSE TO LAROSE...MOVING EAST AT 50 MPH. THE LINE OF STRONG THUNDERSTORMS WILL BE NEAR... LAFITTE BY 705 PM... KILN BY 710 PM... DIAMONDHEAD BY 715 PM... MYRTLE GROVE AND PASS CHRISTIAN BY 725 PM... YSCLOSKEY AND LONG BEACH BY 730 PM... SAUCIER...POINTE A LA HACHE AND LYMAN BY 735 PM... THE PRIMARY THREAT FROM THESE STORMS IS WIND GUSTS 35 TO 45 MPH... WHICH COULD DOWN TREE LIMBS AND BLOW AROUND UNSECURED SMALL OBJECTS. SEEK SHELTER IN A SAFE HOME OR BUILDING UNTIL THESE STORMS HAVE PASSED. THESE STORMS 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. FREQUENT LIGHTNING IS OCCURRING WITH THESE STORMS. IF OUTDOORS...STAY AWAY FROM ISOLATED HIGH OBJECTS SUCH AS TREES. MOVE INDOORS IF POSSIBLE. WHEN INDOORS...STAY AWAY FROM WINDOWS AND DOORS AND AVOID USING TELEPHONES UNLESS IT IS AN EMERGENCY. TRY TO UNPLUG UNNECESSARY ELECTRICAL APPLIANCES BEFORE THE THUNDERSTORM APPROACHES. 24/RR
Special weather statement, Apr 14, 7:31 PM CDT, 1 hour 8 minutes before
MSZ081-082-150130- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE NEW ORLEANS LA 731 PM CDT MON APR 14 2014 ...LINE OF STRONG THUNDERSTORMS MOVING EAST AFFECTING JACKSON COUNTY...HARRISON COUNTY... AT 728 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A LINE OF STRONG THUNDERSTORMS...ALONG A LINE EXTENDING FROM 16 MILES SOUTH OF WIGGINS TO GULFPORT TO 9 MILES SOUTH OF LONG BEACH...MOVING EAST AT 45 MPH. THE LINE OF STRONG THUNDERSTORMS WILL AFFECT AREAS IN AND AROUND... BILOXI...ST. MARTIN...OCEAN SPRINGS...GULF PARK ESTATES... VANCLEAVE...GAUTIER...ESCATAWPA...WADE...PASCAGOULA AND MOSS POINT THE PRIMARY THREAT FROM THESE STORMS IS WIND GUSTS TO NEAR 50 MPH... WHICH COULD DOWN TREE LIMBS AND BLOW AROUND UNSECURED SMALL OBJECTS. SEEK SHELTER IN A SAFE HOME OR BUILDING UNTIL THESE STORMS HAVE PASSED. THESE STORMS 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 SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL 900 PM CDT MONDAY EVENING FOR SOUTHEAST LOUISIANA AND SOUTHEASTERN MISSISSIPPI. FREQUENT LIGHTNING IS OCCURRING WITH THESE STORMS. IF OUTDOORS...STAY AWAY FROM ISOLATED HIGH OBJECTS SUCH AS TREES. MOVE INDOORS IF POSSIBLE. WHEN INDOORS...STAY AWAY FROM WINDOWS AND DOORS AND AVOID USING TELEPHONES UNLESS IT IS AN EMERGENCY. TRY TO UNPLUG UNNECESSARY ELECTRICAL APPLIANCES BEFORE THE THUNDERSTORM APPROACHES. 24/RR
Local storm report, Apr 14, 7:45 PM CDT, 54 minutes before
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</html>The office that day
Everything else NWS New Orleans, LA issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Apr 14, 7:20 PM CDT | Special Marine Warning | LIX | 85 min | |
| Apr 14, 9:37 PM CDT | Special Marine Warning | LIX | 53 min | |
| Apr 14, 10:18 PM CDT | River Flood Warning | LIX | Harrison | 41 hr |
| Apr 14, 10:19 PM CDT | River Flood Warning | LIX | Harrison | 33 hr |
| Apr 15, 2:16 PM CDT | River Flood Warning | LIX | Harrison | 14 hr |
Nearby
Severe Thunderstorm Warnings in Louisiana, 2014Every severe thunderstorm warning in 2014
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.