Alert archive / Louisiana / Special Weather Statements in 2015
Special Weather Statement, NWS New Orleans, LA
NWS New Orleans, LA issued this special weather statement at Jul 7, 2015, 5:21 PM CDT for Ascension Parish, Louisiana. It was in force for 39 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
- Jul 7, 2015, 5:21 PM CDT (22:21 UTC)
- Expired
- Jul 7, 2015, 6:00 PM CDT
- In force
- 39 min
- Issued by
- NWS New Orleans, LA
County Ascension Parish, LA
The nearest sounding before it
Jackson, MS (KJAN), launched 12:00Z, 10.4 hours before the alert went out and 235 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
- 1362 J/kg
- Mixed-layer CIN
- -69 J/kg
- Mixed-layer LCL
- 845 m above ground
- 0-6 km bulk shear
- 15 kt
- 0-1 km storm-relative helicity
- -4 m²/s²
- 0-3 km storm-relative helicity
- 30 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
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</html>What forecasters said that day
The local office's own words before this special weather statement 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 special weather statement went out at Jul 7, 3:10 PM CDT, 2 hours 11 minutes earlier.
Area forecast discussion, Jul 7, 3:10 PM CDT, 2 hours 11 minutes before
AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE NEW ORLEANS LA
310 PM CDT TUE JUL 7 2015
.SYNOPSIS...
HIGH PRESSURE CENTER REMAINS OVER THE EASTERN GULF OF MEXICO THIS
AFTERNOON. UPPER RIDGING IS NOT QUITE AS STRONG AS IT HAS BEEN
OVER THE LAST SEVERAL DAYS. ISOLATED SHOWERS AND THUNDERSTORMS
HAVE DEVELOPED ACROSS WESTERN PORTIONS OF THE CWA THIS AFTERNOON.
TEMPERATURES AT MID AFTERNOON ARE GENERALLY IN THE UPPER 80S AND
LOWER 90S WITH DEW POINTS IN THE MID 70S.
&&
.SHORT TERM...
EXPECT MOST OF CURRENT CONVECTION TO DISSIPATE PRIOR TO SUNSET.
BERMUDA HIGH SURGES WESTWARD AGAIN OVER THE WEEKEND...CENTERING
ITSELF OVER TEXAS BY SATURDAY. STILL SEE THE OPPORTUNITY FOR
ISOLATED TO SCATTERED CONVECTION EACH DAY AS THE CONVECTIVE
TEMPERATURE IS REACHED. THURSDAY AND FRIDAY APPEAR TO BE THE DAYS
THIS WILL MOST EASILY BE REACHED...AND HAVE GONE WITH CHANCE POPS
FOR THOSE DAYS. TEMPERATURES GENERALLY IN THE LOWER 90S. HEAT
INDEX READINGS GENERALLY IN THE 100-105 RANGE. 35
&&
.LONG TERM...
MEDIUM RANGE MODELS IN SOMEWHAT REASONABLE AGREEMENT THROUGH AT
LEAST MONDAY. NO LARGE SCALE FEATURES TO FORCE CONVECTIVE
DEVELOPMENT...AND DO NOT SEE ANY REASON TO GO MUCH HIGHER THAN 20
PERCENT ON POPS THROUGH THE EXTENDED FORECAST PERIOD. EXPECT
TEMPERATURES TO CREEP A LITTLE HIGHER INTO THE LOWER AND MID 90S
FOR HIGHS. WILL NEED TO MONITOR HUMIDITIES FOR POTENTIAL HEAT
ADVISORIES...AS CURRENT FORECAST HAS SOME HEAT INDEX READINGS NEAR
105 FOR SUNDAY AND MONDAY. 35
&&
.AVIATION...
EXPECT VFR TO MVFR CIGS OVER THE AREA THIS EVENING. A FEW SHOWERS
HAVE DEVELOPED OVER THE WESTERN PORTIONS OF THE FORECAST AREA AND
HAVE INCLUDED VCTS AT KBTR THROUGH THE AFTERNOON AND EVENING. SOME
PATCHY FOG IS POSSIBLE IN SOME TERMINALS AND ARE REFLECTED IN
TAFS. EXPECT MORE OF THE SAME CONDITIONS TOMORROW. 13/MH
&&
.MARINE...
BERMUDA RIDGE TO MAINTAINS LIGHT SOUTHERLY FLOW OVER THE COASTAL
WATERS THROUGH THE FORECAST PERIOD. ANY THUNDERSTORMS THAT DEVELOP
OVER THE NEXT SEVERAL DAYS WILL BE ISOLATED. WINDS AND SEAS SHOULD
CONTINUE TO BE ON THE LOWER END OF THINGS AROUND 10 KNOTS OR LESS
AND SEAS AROUND 2 FEET. 13/MH
&&
.DECISION SUPPORT...
DSS CODE....BLUE.
DEPLOYED...NONE.
ACTIVATION...NONE.
ACTIVITIES...RIVER FLOOD WARNINGS ON MISSISSIPPI RIVER FROM RED
RIVER LANDING TO BATON ROUGE.
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 RISK SVR AND/OR DIRECT
TROPICAL THREATS; EVENTS OF NATIONAL SIGNIFICANCE
&&
.PRELIMINARY POINT TEMPS/POPS...
MCB 75 92 73 92 / 10 20 10 20
BTR 76 92 75 92 / 10 20 10 30
ASD 78 92 76 91 / 0 10 10 30
MSY 79 92 78 91 / 0 10 10 30
GPT 78 90 78 90 / 0 10 10 30
PQL 76 91 75 90 / 0 10 10 30
&&
.LIX WATCHES/WARNINGS/ADVISORIES...
LA...NONE.
GM...NONE.
MS...NONE.
GM...NONE.
&&Hazardous weather outlook, Jul 7, 11:47 AM CDT, 5 hours 34 minutes before
HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE NEW ORLEANS LA 1147 AM CDT TUE JUL 7 2015 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>082-080500- 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- 1147 AM CDT TUE JUL 7 2015 THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF SOUTHEAST LOUISIANA...SOUTH MISSISSIPPI AND THE ADJACENT COASTAL WATERS. .DAY ONE...THIS AFTERNOON AND TONIGHT NO HAZARDOUS WEATHER IS ANTICIPATED AT THIS TIME. .DAYS TWO THROUGH SEVEN...WEDNESDAY THROUGH MONDAY HEAT INDEX VALUES COULD BRIEFLY RISE TO THE 102 TO 105 DEGREE RANGE BY THIS LATE WEEKEND INTO EARLY NEXT WEEK. WILL HAVE TO MONITOR THE FORECAST TO SEE IF A HEAT ADVISORY WILL BE NEEDED EARLY NEXT WEEK. ISOLATED AFTERNOON THUNDERSTORMS ARE POSSIBLE EACH DAY. ORGANIZED SEVERE STORMS ARE NOT EXPECTED THROUGH MONDAY. .SPOTTER INFORMATION STATEMENT... SPOTTER ACTIVATION IS NOT ANTICIPATED.
In the hours before
Special weather statement, Jul 7, 4:16 PM CDT, 1 hour 5 minutes before
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</html>Local storm report, Jul 7, 4:24 PM CDT, 57 minutes before
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</html>Special weather statement, Jul 7, 4:39 PM CDT, 42 minutes before
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</html>Special weather statement, Jul 7, 4:44 PM CDT, 37 minutes before
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</html>Special weather statement, Jul 7, 5:21 PM CDT, 0 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 |
|---|---|---|---|---|
| Jul 7, 4:39 PM CDT | Special Weather Statement | LIX | East Baton Rouge, West Baton Rouge | 51 min |
| Jul 7, 5:27 PM CDT | Special Weather Statement | LIX | East Feliciana | 33 min |
| Jul 7, 6:14 PM CDT | Special Weather Statement | LIX | Saint Helena | 31 min |
| Jul 7, 6:44 PM CDT | Special Weather Statement | LIX | Tangipahoa | 46 min |
| Jul 7, 4:16 PM CDT | Special Weather Statement | LIX | Wilkinson | 44 min |
| Jul 7, 4:44 PM CDT | Special Weather Statement | LIX | Wilkinson | 46 min |
Nearby
Special Weather Statements in Louisiana, 2015Every special weather statement in 2015
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.