Alert archive / Texas / River Flood Warnings in 2020

River Flood Warning 99, NWS Shreveport, LA

April 19, 2020Sabine County, San Augustine County, Texas

NWS Shreveport, LA issued this river flood warning at Apr 19, 2020, 8:02 PM CDT for Sabine County, San Augustine County, Texas. It took effect at Apr 20, 2020, 9:32 AM CDT. It was in force for 23 hr.

The area

The counties it named.

The facts

Issued: Apr 19, 2020, 8:02 PM CDT (01:02 UTC)
In effect from: Apr 20, 2020, 9:32 AM CDT
Expired: Apr 21, 2020, 8:52 AM CDT
In force: 23 hr
Issued by: NWS Shreveport, LA
Area: Storm-based polygon
Flood severity: Minor

Counties Sabine County, TX, San Augustine County, TX

The radar

The Ft Polk radar (KPOE), 101 km from the middle of the area, began a volume at 01:03 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 Ayish Bayou near San Augustine (AYIT2). The gauge peaked at 14.36 ft at Apr 20, 2020, 5:00 AM CDT.

Action stage: 11.5 ft
Minor stage: 12 ft
Moderate stage: 16 ft
Major stage: 17 ft

This gauge today: stage, forecast and historic crests

Stage from the USGS instantaneous record for site 08039100, 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 Apr 19, 6:24 PM CDT, 1 hour 38 minutes earlier.

Area forecast discussion, Apr 19, 6:24 PM CDT, 1 hour 38 minutes before

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Hazardous weather outlook, Apr 19, 3:54 AM CDT, 16 hours 8 minutes before

Hazardous Weather Outlook
National Weather Service Shreveport LA
354 AM CDT Sun Apr 19 2020

ARZ050-051-059>061-070>073-LAZ001>006-010>014-017>022-OKZ077-
TXZ096-097-108>112-124>126-136>138-149>153-165>167-201200-
Sevier-Howard-Little River-Hempstead-Nevada-Miller-Lafayette-
Columbia-Union-Caddo-Bossier-Webster-Claiborne-Lincoln-De Soto-
Red River-Bienville-Jackson-Ouachita-Sabine-Natchitoches-Winn-
Grant-Caldwell-La Salle-McCurtain-Bowie-Franklin-Titus-Camp-
Morris-Cass-Wood-Upshur-Marion-Smith-Gregg-Harrison-Cherokee-Rusk-
Panola-Nacogdoches-Shelby-Angelina-San Augustine-
354 AM CDT Sun Apr 19 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...

Another widespread severe weather outbreak is likely today through
this evening across much of the Four State Region. Very large
hail, destructive wind gusts and isolated tornadoes, some long
tracked and significant, will be possible. The greatest tornado
threat should be across Deep East Texas into all of Northern and
Northeast Louisiana, late this morning through the afternoon
hours. Another severe weather threat may materialize this evening
into the early overnight hours near and north of the Interstate 20
Corridor of Northeast Texas and Northern Louisiana. The threat
with this secondary severe weather possibility would be large hail
and damaging wind gusts. While very heavy downpours will be
possible today, flash flooding should stay confined to flood prone
areas with widespread flooding not likely through tonight.

.DAYS TWO THROUGH SEVEN...Monday through Saturday...

Another round of severe weather will be possible late Wednesday
through Wednesday Night across the Four State Region. While
details are still far from certain at this time, this mid week
system is concerning for a large portion of our region with an
excessive heavy rainfall threat as well.

.SPOTTER INFORMATION STATEMENT...

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

13

In the hours before

Local storm report, Apr 19, 6:02 PM CDT, 2 hours before

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Local storm report, Apr 19, 6:13 PM CDT, 1 hour 49 minutes before

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Local storm report, Apr 19, 6:17 PM CDT, 1 hour 45 minutes before

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Local storm report, Apr 19, 6:18 PM CDT, 1 hour 44 minutes before

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Local storm report, Apr 19, 6:30 PM CDT, 1 hour 32 minutes before

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Local storm report, Apr 19, 6:40 PM CDT, 1 hour 22 minutes before

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The office that day

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

Issued	Product	Office	Counties	Lasted
Apr 19, 8:09 PM CDT	River Flood Warning	SHV	Nacogdoches, Rusk	59 hr

Nearby

River Flood Warnings in Texas, 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.