Heavy Rainfall Possible across the Four State Region by mid-week
Jan 07, 2013 | 1445 views | 0 0 comments | 4 4 recommendations | email to a friend | print

Heavy Rainfall Possible across the Four State Region by mid-week

(click any of the below images to see a larger version)

A slow moving upper level storm system is forecast to move across the southwestern United States over the next couple of days and begin impacting the region Tuesday afternoon. The anticipated storm system just recently came on shore(Sunday Morning) and as of Monday morning was moving across southwest Arizona.

Monday(1/7) morning satellite image of the large storm system moving slowly across California.


6 am Wednesday weather forecast map.
As the storm system approaches from the west, rainfall will become widespread by Wednesday morning. The image to the left shows an area of surface low pressure developing across southeast Texas. A cold front will extend to the south, with a warm front extending eastward  along the Gulf coast. Heavy rain (depicted in darker shades of green and yellow) will be ongoing from central Texas southeastward to central Louisiana.


By Wednesday evening, the surface low will have travelled farther to the north. This will allow areas of heavy rainfall to spread north as well. By this time, rainfall totals will start adding up across the four state region. Notice the heavier band of rain across east Texas and southeast Oklahoma displayed in the image to the right.





6 pm Wednesday weather forecast map.


  Rainfall totals over the last 14 days. Image courtesy of the Advanced Hydrological Prediction Service.

Possible rainfall totals over the next 3 days. Image courtesy of the the Hydrometeorological Prediction Center.

Images to the left show rainfall amounts over the past 14 days and possible rainfall totals. The top graphic indicates that the ground is saturated in many locations due to several recent storm systems bringing rainfall to the area. In the lower image, possible rainfall totals are displayed. Some areas could see more than 3-4 inches of rain. If these rainfall totals pan out, some flash flooding could occur across the area.

 Finally, there will be a risk for severe thunderstorms on Wednesday, mainly south of the Arkansas/Louisiana border. The main threat appears to be damaging winds, but an isolated tornado can't be ruled out.

Wednesday severe weather threat area. Image courtesy of the Storm Prediction Center.


In summary, rainfall will begin to move into the are by late Tuesday night and likely won't leave the area until Thursday. Wednesday has the best rain chances, as well as the best chance for heavy rainfall. Localized flash flooding may be an issue, as recent storm systems have saturated the ground in many locations across the forecast area. Some severe weather may be possible on Wednesday as well. Stay tuned to the latest forecasts as new weather data becomes available.


Did you know?

 The NWS office in Shreveport issues a Hazardous Weather Outlook twice a day, at 6 am and noon. This text product gives users an idea about what type of hazardous weather may be expected over the next 7 days. Hazards include severe thunderstorms, flooding, flash flooding, fog, winter weather or a number of other hazards. To see the latest Hazardous Weather Outlook click here. For othe forecast products, simply visit our main webpage by clicking here.



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