Alert archive / Louisiana / Special Weather Statements in 2017
Special Weather Statement, NWS New Orleans, LA
NWS New Orleans, LA issued this special weather statement at Jul 24, 2017, 2:08 PM CDT for Orleans Parish, Louisiana. It was in force for 37 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 24, 2017, 2:08 PM CDT (19:08 UTC)
- Expired
- Jul 24, 2017, 2:45 PM CDT
- In force
- 37 min
- Issued by
- NWS New Orleans, LA
County Orleans Parish, LA
The nearest sounding before it
Slidell Radar S, LA (KSIL), launched 12:00Z, 7.1 hours before the alert went out and 35 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
- 2227 J/kg
- Mixed-layer CIN
- -3 J/kg
- Mixed-layer LCL
- 639 m above ground
- 0-6 km bulk shear
- 9 kt
- 0-1 km storm-relative helicity
- 17 m²/s²
- 0-3 km storm-relative helicity
- 45 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
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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 24, 12:22 PM CDT, 1 hour 46 minutes earlier.
Area forecast discussion, Jul 24, 12:22 PM CDT, 1 hour 46 minutes before
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Hazardous Weather Outlook...UPDATED National Weather Service New Orleans LA 945 AM CDT Mon Jul 24 2017 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>082-250245- Lake Pontchartrain and Lake Maurepas-Mississippi Sound- Lake Borgne-Chandeleur Sound-Breton Sound- Coastal Waters from Port Fourchon LA to Lower Atchafalaya River LA out 20 nm- Coastal waters from the Southwest Pass of the Mississippi River to Port Fourchon Louisiana out 20 NM- Coastal Waters from Boothville LA to Southwest Pass of the Mississippi River out 20 nm- Coastal waters from Pascagoula Mississippi to Stake Island out 20 NM- Coastal waters from Port Fourchon Louisiana to Lower Atchafalaya River LA from 20 to 60 NM- Coastal waters from Southwest Pass of the Mississippi River to Port Fourchon Louisiana from 20 to 60 NM- Coastal Waters from Stake Island LA to Southwest Pass of the Mississippi River from 20 to 60 nm- Coastal waters from Pascagoula Mississippi to Stake Island Louisiana out 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- 945 AM CDT Mon Jul 24 2017 This Hazardous Weather Outlook is for portions of Southeast Louisiana...South Mississippi and the adjacent coastal waters. .DAY ONE...Today and Tonight Numerous showers and thunderstorms, some with locally heavy rainfall, are expected today, with lesser coverage overnight. Rainfall may become heavy at times and possibly lead to flash flooding. A Flash Flood Watch has been issued for today and tonight. Gusty winds and frequent lightning are also likely with these storms. .DAYS TWO THROUGH SEVEN...Tuesday through Sunday There is a continued chance of thunderstorms each day Tuesday through Saturday. A few storms each day could become strong and produce frequent lightning, gusty winds and locally heavy rainfall. A Flash Flood Watch will be in effect through Tuesday afternoon. .SPOTTER INFORMATION STATEMENT... Spotter activation is not anticipated, however any reports of flooding should be promptly reported to the National Weather Service office in Slidell, LA. 24/RR
In the hours before
Special weather statement, Jul 24, 11:36 AM CDT, 2 hours 32 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 24, 7:45 AM CDT | Areal Flood Advisory | LIX | Washington | 2 hr |
| Jul 24, 9:15 AM CDT | Special Marine Warning | LIX | 30 min | |
| Jul 24, 9:49 AM CDT | Flash Flood Watch | LIX | Assumption, East Baton Rouge, East Feliciana, Iberville, Pointe Coupee, Saint Bernard and 7 more | 32 hr |
| Jul 24, 11:36 AM CDT | Special Weather Statement | LIX | West Feliciana | 24 min |
| Jul 24, 11:56 AM CDT | Special Weather Statement | LIX | Tangipahoa, Washington | 64 min |
| Jul 24, 1:32 PM CDT | Special Weather Statement | LIX | Orleans, Saint Charles, Saint John the Baptist | 58 min |
| Jul 24, 2:12 PM CDT | Special Marine Warning | LIX | 63 min | |
| Jul 24, 2:13 PM CDT | Special Marine Warning | LIX | 62 min | |
| Jul 24, 2:35 PM CDT | Special Weather Statement | LIX | Orleans | 25 min |
| Jul 24, 3:47 PM CDT | Special Marine Warning | LIX | 58 min | |
| Jul 24, 5:02 PM CDT | Special Marine Warning | LIX | 58 min | |
| Jul 24, 5:02 AM CDT | Areal Flood Advisory | LIX | Amite, Pike | 118 min |
| Jul 24, 7:25 AM CDT | Areal Flood Advisory | LIX | Jackson | 2 hr |
| Jul 24, 1:07 PM CDT | Special Weather Statement | LIX | Amite, Pike | 83 min |
Nearby
Special Weather Statements in Louisiana, 2017Every special weather statement in 2017
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.