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Hazardous Weather Outlook

Hazardous Weather Outlook
National Weather Service Shreveport LA
1246 PM CDT Mon May 17 2021

ARZ050-051-059>061-070>073-LAZ001>006-010>014-017>022-OKZ077-
TXZ096-097-108>112-124>126-136>138-149>153-165>167-181100-
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-
1246 PM CDT Mon May 17 2021

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...This Afternoon and Tonight...

Showers and thunderstorms will increase across the region today,
ahead of an upper level disturbance that will move through the
area. Isolated strong to severe thunderstorms can not be ruled
out, with damaging winds, hail, and brief heavy rainfall possible.
These showers and thunderstorms will diminish this evening with
the departure of this disturbance.

.DAYS TWO THROUGH SEVEN...Tuesday through Sunday...

Showers and thunderstorms will again return to the region Tuesday
in advance of an upper level storm system that will progress
through the Southern Rockies and into West Texas and the Oklahoma
Panhandle by midweek. The threat for locally heavy rainfall and
flash flooding will increase Tuesday night and Wednesday across
East Texas, Southeast Oklahoma, portions of Southwest Arkansas and
possibly Western Louisiana, as a complex of showers and
thunderstorms moves into these areas. Some of these storms may
also become severe during the late afternoon through the evening
hours Tuesday, before the heavy rain and flash flood threat
increases across these areas Tuesday night and Wednesday.
Widespread rainfall amounts of three to five inches are expected
this week across these areas this week, with isolated higher
amounts in excess of eight inches possible, especially over East
Texas. This rainfall will result in new rises and possible
flooding on area creeks and bayous, rivers and lakes. This
unsettled weather pattern will continue Thursday and Friday,
before gradually diminishing from east to west this weekend.

.SPOTTER INFORMATION STATEMENT...

Activation of emergency management personnel...amateur radio
operators...and storm spotters may be needed today across portions
of the region.

$$

09




Flash Flood Watch

Flood Watch
National Weather Service Shreveport LA
156 PM CDT Mon May 17 2021

ARZ050-051-059>061-070>072-LAZ001>005-010>013-017>020-OKZ077-TXZ096-
097-108>112-124>126-136>138-149>153-165>167-181900-
/O.NEW.KSHV.FF.A.0004.210518T1200Z-210520T1200Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Sevier-Howard-Little River-Hempstead-Nevada-Miller-Lafayette-
Columbia-Caddo-Bossier-Webster-Claiborne-Lincoln-De Soto-Red River-
Bienville-Jackson-Sabine-Natchitoches-Winn-Grant-McCurtain-Red River-
Bowie-Franklin-Titus-Camp-Morris-Cass-Wood-Upshur-Marion-Smith-Gregg-
Harrison-Cherokee-Rusk-Panola-Nacogdoches-Shelby-Angelina-San
Augustine-Sabine-
Including the cities of Colfax, Hawkins, Ashdown, Center, Carthage,
Magnolia, Ruston, Gibsland, Winnsboro, Montgomery, Stamps,
Jefferson, Pleasant Hill, Mineola, Springhill, Naples, Hope,
Henderson, Linden, Nacogdoches, Bossier City, Broken Bow, Zwolle,
Hughes Springs, Gilmer, Nashville, San Augustine, Mount Pleasant,
Lone Star, Lewisville, Mineral Springs, Mansfield, Coushatta,
Shreveport, Jonesboro, Queen City, Atlanta, Quitman, Mount Vernon,
Minden, Homer, Rusk, Arcadia, Natchitoches, Omaha, De Queen,
Pineland, Many, Dry Prong, Stonewall, Clarksville, Martin, Prescott,
Big Sandy, Ringgold, Texarkana, Daingerfield, Bogata, Pittsburg,
Marshall, Haynesville, Winnfield, Jacksonville, Bradley, Tyler,
Logansport, Hemphill, Dierks, Lufkin, Idabel, and Longview
156 PM CDT Mon May 17 2021

...FLASH FLOOD WATCH IN EFFECT FROM TUESDAY MORNING THROUGH THURSDAY
MORNING...

The National Weather Service in Shreveport has issued a

* Flash Flood Watch for portions of southwest Arkansas...Louisiana...
  southeast Oklahoma and Texas, including the following areas, in
  southwest Arkansas, Columbia, Hempstead, Howard, Lafayette, Little
  River, Miller, Nevada and Sevier. In Louisiana, Bienville,
  Bossier, Caddo, Claiborne, De Soto, Grant, Jackson, Lincoln,
  Natchitoches, Red River, Sabine, Webster and Winn. In southeast
  Oklahoma, McCurtain. In Texas, Angelina, Bowie, Camp, Cass,
  Cherokee, Franklin, Gregg, Harrison, Marion, Morris, Nacogdoches,
  Panola, Red River, Rusk, Sabine, San Augustine, Shelby, Smith,
  Titus, Upshur and Wood.

* From Tuesday morning through Thursday morning

* Rainfall totals of 2 to 6 inches with isolated higher amounts
  possible.

* Flooding may occur in urban and poor drainage areas.  Heavy
  rainfall may also cause flooding of creeks, streams, and rivers.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Flash Flood Watch means that conditions may develop that lead to
Flash Flooding. Flash Flooding is a very dangerous situation. You
should monitor later forecasts and be prepared to take action should
Flash Flood Warnings be issued.

&&

$$

19



U.S. Dept. of Commerce
NOAA National Weather Service
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Silver Spring, MD 20910
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