Alert archive / Louisiana / River Flood Warnings in 2018

River Flood Warning 45, NWS New Orleans, LA

April 14, 2018Ascension Parish, Louisiana

NWS New Orleans, LA issued this river flood warning at Apr 14, 2018, 10:05 PM CDT for Ascension Parish, Louisiana. It took effect at Apr 15, 2018, 1:00 AM CDT. It was in force for 12 hr.

The area

The counties it named.

The facts

Issued: Apr 14, 2018, 10:05 PM CDT (03:05 UTC)
In effect from: Apr 15, 2018, 1:00 AM CDT
Expired: Apr 15, 2018, 1:00 PM CDT
In force: 12 hr
Issued by: NWS New Orleans, LA
Area: Storm-based polygon
Flood severity: Minor

County Ascension Parish, LA

The river

Written for the forecast point Mississippi River at Donaldsonville (DONL1).

Action stage: 25 ft
Minor stage: 27 ft
Moderate stage: 30 ft
Major stage: 34 ft

This gauge today: stage, forecast and historic crests

Stage from the USGS instantaneous record, one reading an hour, from a day before the product to a day after it ended. Flood stages are today's.

What forecasters said that day

The local office's own words before this river flood 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 river flood warning went out at Apr 14, 9:03 PM CDT, 1 hour 2 minutes earlier.

Area forecast discussion, Apr 14, 9:03 PM CDT, 1 hour 2 minutes before

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Hazardous weather outlook, Apr 14, 5:38 PM CDT, 4 hours 27 minutes before

Hazardous Weather Outlook
National Weather Service New Orleans LA
538 PM CDT Sat Apr 14 2018

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>082-151045-
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-
538 PM CDT Sat Apr 14 2018

This Hazardous Weather Outlook is for portions of Southeast
Louisiana...South Mississippi and the adjacent coastal waters.

.DAY ONE...Tonight

There are several weather related hazards expected tonight.

A Flash Flood Watch is in effect through 1 AM tonight along and
east of a line from McComb Mississippi to Donaldsonville
Louisiana. Rainfall accumulations of 3 to 5 inches with locally
higher amounts in excess of 8 inches possible through this
evening.

A Gale Warning is in effect through tonight for Chandeleur and
Breton Sounds as well as in the coastal waters for winds in
excess of 34 knots and high seas as high as 12 to 15 feet. Small
Craft Advisories will be in effect for the tidal lakes and
Mississippi Sound.

A Tornado Watch is in effect for Harrison and Jackson Counties in
Mississippi as well as the adjacent coastal waters until 7 pm.

.DAYS TWO THROUGH SEVEN...Sunday through Friday

Small craft advisories will be in effect for strong northerly
winds and rough seas Sunday.

Flood warnings are in effect for several rivers across southeast
Louisiana and southern Mississippi. Please refer to the latest
flood warnings and statements for the latest information.

.SPOTTER INFORMATION STATEMENT...

Spotter activation is requested through this evening. Please
report any severe weather and flooding reports promptly to the
National Weather Service office in Slidell...985 649 0429
extension 4.

In the hours before

Local storm report, Apr 14, 7:58 PM CDT, 2 hours 7 minutes before

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Special weather statement, Apr 14, 8:33 PM CDT, 1 hour 32 minutes before

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Local storm report, Apr 14, 8:39 PM CDT, 1 hour 26 minutes before

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Local storm report, Apr 14, 9:29 PM CDT, 36 minutes before

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Local storm report, Apr 14, 9:34 PM CDT, 31 minutes before

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Local storm report, Apr 14, 9:56 PM CDT, 9 minutes before

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The office that day

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

Issued	Product	Office	Counties	Lasted
Apr 14, 7:07 PM CDT	Special Marine Warning	LIX		113 min
Apr 14, 8:19 PM CDT	Special Marine Warning	LIX		116 min
Apr 14, 8:20 PM CDT	River Flood Warning	LIX	Saint Tammany	31 hr
Apr 14, 8:33 PM CDT	Special Weather Statement	LIX	Saint John the Baptist	27 min
Apr 14, 10:49 PM CDT	River Flood Warning	LIX	Saint Tammany	3 days
Apr 15, 6:27 AM CDT	River Flood Warning	LIX	Saint Tammany	32 hr
Apr 15, 6:24 AM CDT	River Flood Warning	LIX	Harrison	38 hr
Apr 15, 9:29 AM CDT	River Flood Warning	LIX	Harrison	7 hr

Nearby

River Flood Warnings in Louisiana, 2018 Every river flood warning in 2018

Sources

The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; the gauge from the NWS water service and the USGS.