Alert archive / Louisiana / River Flood Warnings in 2020

River Flood Warning 144, NWS Shreveport, LA

September 3, 2020Webster Parish, Louisiana; Columbia County, Arkansas

NWS Shreveport, LA issued this river flood warning at Sep 3, 2020, 8:29 PM CDT for Webster Parish, Louisiana; Columbia County, Arkansas. It took effect at Sep 4, 2020, 7:00 AM CDT. It was in force for 3 days.

The area

The counties it named.

The facts

Issued: Sep 3, 2020, 8:29 PM CDT (01:29 UTC)
In effect from: Sep 4, 2020, 7:00 AM CDT
Expired: Sep 7, 2020, 8:55 AM CDT
In force: 3 days
Issued by: NWS Shreveport, LA
Area: Storm-based polygon
Flood severity: Minor

Counties Columbia County, AR, Webster Parish, LA

The radar

The Shreveport radar (KSHV), 77 km from the middle of the area, began a volume at 01:28 UTC, the scan nearest the moment this went out.

Open the radar archive at this moment

The archived warnings, watches and discussions in force at that minute are drawn over the scan, this one among them.

The river

Written for the forecast point Bayou Dorcheat near Springhill (SPHL1). The gauge peaked at 10.78 ft at Sep 3, 2020, 9:00 PM CDT.

Action stage: 10.5 ft
Minor stage: 11 ft
Moderate stage: 18 ft
Major stage: 21 ft

This gauge today: stage, forecast and historic crests

Stage from the USGS instantaneous record for site 07348700, 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 Shreveport, LA wrote its last area forecast discussion before this river flood warning went out at Sep 3, 3:34 PM CDT, 4 hours 55 minutes earlier.

Area forecast discussion, Sep 3, 3:34 PM CDT, 4 hours 55 minutes before

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Hazardous weather outlook, Sep 3, 5:03 AM CDT, 15 hours 26 minutes before

Hazardous Weather Outlook
National Weather Service Shreveport LA
503 AM CDT Thu Sep 3 2020

ARZ050-051-059>061-070>073-LAZ001>006-010>014-021-OKZ077-TXZ096-
097-108>112-124>126-136>138-149>153-165>167-041015-
Sevier-Howard-Little River-Hempstead-Nevada-Miller-Lafayette-
Columbia-Union-Caddo-Bossier-Webster-Claiborne-Lincoln-De Soto-
Red River-Bienville-Jackson-Ouachita-Caldwell-McCurtain-Bowie-
Franklin-Titus-Camp-Morris-Cass-Wood-Upshur-Marion-Smith-Gregg-
Harrison-Cherokee-Rusk-Panola-Nacogdoches-Shelby-Angelina-
San Augustine-Sabine-
503 AM CDT Thu Sep 3 2020

This Hazardous Weather Outlook is for portions of south central
Arkansas, southwest Arkansas, north central Louisiana, northwest
Louisiana, southeast Oklahoma, east Texas and northeast Texas.

.DAY ONE...Today and Tonight...

Scattered showers and thunderstorms will be possible through the
evening hours, with some of these storms producing locally heavy
rainfall. However, widespread flash flooding is not anticipated.

.DAYS TWO THROUGH SEVEN...Friday through Wednesday...

Scattered to numerous showers and thunderstorms will be possible
through the remainder of the work week. However, things should
dry out over the weekend behind a passing front.

.SPOTTER INFORMATION STATEMENT...

Activation of emergency management personnel...amateur radio
operators...and storm spotters may be necessary for the overnight
hours. Please relay any information about observed severe weather
to the NWS while following all local, state, and CDC guidelines.

LAZ017>020-022-041015-
Sabine-Natchitoches-Winn-Grant-La Salle-
503 AM CDT Thu Sep 3 2020

This Hazardous Weather Outlook is for portions of north central
Louisiana and northwest Louisiana.

.DAY ONE...Today and Tonight...

Heat index values ranging between 100 and 105 degrees are possible
this afternoon, as such another Heat Advisory has been issued for
these parishes. Additionally, scattered showers and thunderstorms
could develop this evening.

.DAYS TWO THROUGH SEVEN...Friday through Wednesday...

Scattered to numerous showers and thunderstorms will be possible
through the remainder of the work week. However, things should
dry out over the weekend behind a passing front.

.SPOTTER INFORMATION STATEMENT...

Activation of emergency management personnel...amateur radio
operators...and storm spotters may be necessary for tonight.
Please relay any information about observed severe weather to the
NWS while following all local, state, and CDC guidelines.

44

In the hours before

Special weather statement, Sep 3, 4:24 PM CDT, 4 hours 5 minutes before

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      <div class="status" id="status">Temporary Notice</div>
      <h1 id="headline">This service is currently unavailable.</h1>
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        The site you requested is temporarily down for maintenance or an unexpected outage.
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        Please try again in a few minutes.
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        If you are an administrator, restore upstream service and remove the redirect/fallback rule when normal operations resume.
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The office that day

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

Issued	Product	Office	Counties	Lasted
Sep 4, 4:42 AM CDT	Special Weather Statement	SHV	Camp, Gregg, Harrison, Upshur, Wood	48 min
Sep 4, 4:02 PM CDT	Special Weather Statement	SHV	Nacogdoches, Panola, Shelby	43 min
Sep 4, 5:21 PM CDT	Special Weather Statement	SHV	Rusk	39 min
Sep 4, 6:19 PM CDT	Special Weather Statement	SHV	Panola	41 min
Sep 4, 2:43 AM CDT	Heat Advisory	SHV	Grant, Natchitoches, Sabine, Winn	16 hr
Sep 4, 3:23 PM CDT	Special Weather Statement	SHV	Bienville	52 min
Sep 4, 3:34 PM CDT	Severe Thunderstorm Warning	SHV	Bienville, Bossier, Red River, Webster	31 min
Sep 4, 4:08 PM CDT	Special Weather Statement	SHV	Natchitoches	52 min
Sep 4, 4:43 PM CDT	Special Weather Statement	SHV	Bossier	47 min
Sep 4, 4:45 PM CDT	Special Weather Statement	SHV	Natchitoches	45 min
Sep 4, 5:33 PM CDT	Special Weather Statement	SHV	Bossier, Caddo	42 min
Sep 4, 5:45 PM CDT	Special Weather Statement	SHV	Grant	45 min
Sep 4, 5:46 PM CDT	Special Weather Statement	SHV	Grant	44 min
Sep 4, 5:49 PM CDT	Areal Flood Advisory	SHV	Bossier, Caddo, De Soto	56 min
Sep 4, 6:07 PM CDT	Areal Flood Advisory	SHV	Grant, LaSalle, Winn	113 min

Nearby

River Flood Warnings in Louisiana, 2020 River Flood Warnings in Arkansas, 2020 Every river flood warning in 2020

Sources

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