NWS Issues Flash Flood Warning, Hazardous Weather Outlook

Flash Flood Warning
11:24 AM CST Wednesday, February 21, 2018

The National Weather Service in Shreveport has issued a Flash Flood Warning for Webster Parish in northwestern Louisiana, Western De Soto Parish in northwestern Louisiana, Northwestern Red River Parish in northwestern Louisiana, Caddo Parish in northwestern Louisiana, West central Bienville Parish in northwestern Louisiana, Bossier Parish in northwestern Louisiana, Southeastern Cass County in northeastern Texas, Eastern Marion County in northeastern Texas, Harrison County in northeastern Texas, Panola County in northeastern Texas, Northeastern Rusk County in northeastern Texas, and Shelby County in eastern Texas until 2:30 PM CST.

At 11:23 AM CST, Doppler radar indicated a line of storms producing heavy rain across the warned area. Flash flooding is expected to begin shortly.

Some locations that will experience flooding include Shreveport, Bossier City, Marshall, Minden, Carthage, Springhill, Center, Mansfield, Vivian, Haughton, Greenwood, Blanchard, Waskom, Jefferson, Benton, Stonewall, Logansport, Tatum, Sibley and Cullen.

Precautionary/Preparedness Actions: Turn around, don`t drown when encountering flooded roads. Most flood deaths occur in vehicles.

Flood Advisory
9:57 AM CST Wednesday, February 21, 2018

The National Weather Service in Shreveport has issued an urban and small stream flood advisory for poor drainage areas for Southwestern Panola County in northeastern Texas, Southeastern Rusk County in northeastern Texas, Nacogdoches County in eastern Texas, Northwestern Shelby County in eastern Texas, Western Angelina County in eastern Texas, and Southeastern Cherokee County in northeastern Texas until 1:00 PM CST including the counties of Panola TX, Rusk TX, Nacogdoches TX, Shelby TX, Angelina TX, and Cherokee TX.

At 9:56 AM CST, Doppler radar indicated heavy rain due to thunderstorms. This will cause urban and small stream flooding. The emergency manager in Rusk County is also reporting minor flooding of low lying areas. Overflowing poor drainage areas will result in minor flooding in the advisory area.

Some locations that will experience flooding include Lufkin, Nacogdoches, Carthage, Diboll, Hudson, Tenaha, Timpson, Garrison, Beckville, Wells, Pinehill, Trawick, Pollok, Forest, Douglass, Minden, Burke, Cushing, Appleby and Mount Enterprise.

Hazardous Weather Outlook
5:54 AM CST Wednesday, February 21, 2018

A Hazardous Weather Outlook was issued by the National Weather Service for the areas of Sevier, Howard, Little River, Hempstead, Nevada, Miller, Lafayette, Columbia, Union, Caddo, Bossier, Webster, Claiborne, Lincoln, De Soto, Red River, Bienville, McCurtain, Bowie, Franklin, Titus, Camp, Morris, Cass, Wood, Upshur, Marion, Smith, Gregg, Harrison, Cherokee, Rusk, Panola, Nacogdoches, Shelby, Angelina, San Augustine, and Sabine.

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)

A Flash Flood Watch is in effect through 6 am Thursday Morning. Numerous showers and thunderstorms have been noted across portions east Texas, deep east Texas, southeast Oklahoma to across northwest Louisiana and southwest Arkansas. Moderate to periods of heavy rainfall associated with a slow moving frontal boundary may result in areas of flash flooding as training of showers and thunderstorms will likely occur over the watch area. Rainfall totals of three to six inches of rainfall are expected. Some isolated higher amounts are possible. In addition, some of the storm activity could approach strong levels today, mainly south and east of Shreveport and Bossier. Strong wind gusts and small hail will be the main threats, however an isolated tornado can not be ruled out.

Days two through seven (Thursday through Tuesday) - Persistent southwest flow aloft will provide ensuing moisture and disturbances resulting in an unsettled and wet weather pattern through the week and into the weekend. The cold front will return as a warm front on Thursday resulting in continual light to moderate rainfall across portions of the region. The already nearly saturate soils may be prone to flood and thus caution should be exercised. By late week and into early weekend, another upper level disturbance approaching the region from the west will aid in maintaining showers and thunderstorms, with the potential for moderate to heavy rainfall mainly across portions of northeast Texas, southeast Oklahoma and southwest Arkansas. Adequate instability will pose a threat for strong storms, particularly on Saturday, with gusty winds being the primary threat.

Spotter information statement: Activation of emergency management personnel...amateur radio operators...and storm spotters may be needed this afternoon. In addition, be sure to report water covered roadways to local law enforcement.