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Arctic Air Plunges into the Great Lakes, Northeast and Mid-Atlantic

Arctic air dropping through the northern and eastern U.S. and a storm off the east coast will bring periods of snow, very cold wind chills and hazardous traveling conditions from the Upper Great Lakes to the Northeast. Meanwhile in southern California, Santa Ana winds will decrease but hot, dry air will remain over the area with elevated fire weather conditions. Read More >

Temperatures today will be some 10-15 degrees cooler than they were on Wednesday, but will still be at or above normal for this time of year. Breezy north winds will develop later this morning. In addition, the air will remain dry, so there will be a continued elevated fire weather threat today across a good chunk of the forecast area. Exercise great care if any outdoor activities could result in fire ignition!
This map shows counties where Burn Bans are currently in effect. Burn Bans are established by County Judges and Commissioner Courts, so check with your local officials for further information.
Even cooler on Friday, with highs in the 50s area-wide. Mostly sunny skies will dominate across the northwest, while partly to mostly cloudy conditions will persist to the south and east. Winds will be out of the north at 10 mph or less.
A storm system will approach the region on Saturday, which will begin to draw Gulf moisture back northward. By Saturday evening and overnight, rain chances (perhaps with a few thunderstorms as well) will overspread all of North and Central Texas. Not everyone will get rain from this system, however. The highest rain chances will be along and east of I-35.
A low chance for showers will linger east of I-35 on Sunday morning. Additional low shower chances will return to our south and eastern counties Monday and Monday night. Otherwise, partly to mostly cloudy conditions will prevail with high temperatures generally in the 60s and lows in the 40s.

 
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Severe Thunderstorms Swept Across North Texas
Tuesday - April 26th, 2011

 

A major severe weather outbreak occurred during the afternoon and evening hours on the 26th of April, 2011. Preliminary data suggests there were at least 8 tornadoes across the counties served by the NWS in Ft. Worth.

The damage survey team in southern Van Zandt County determined that EF-1 tornado damage occurred Tuesday evening...April 26. Over 100 structures were damaged and 3 structures were completely destroyed. The damage extended from south of ben wheeler to north of Edom. Estimated maximum winds were in the 90-100 mph range. Path length and path width have not yet been determined.

Additional data will be evaluated as it arrives.

The data provided is considered PRELIMINARY and it is subject to change.

Tornado track map
 

Image updated: April 28th, 2011


 

This radar imagery was taken from the WSR-88D network in Fort Worth TX (KFWS) at 546 pm CDT on April 26, 2011. The radar reflectivity shows the supercell thunderstorms centered southeast of Canton and south of Interstate 20. The white and darkest purple colors represent hail falling from the storm. The hook echo, which is often an indication of very strong low level rotation, appears to have wrapped counterclockwise back onto itself.


radar reflectivity data


 

The storm relative radial velocity image depicts the tornadic circulation as the bright red colors (motion away from radar) adjacent to bright green colors (motion toward the radar). The KFWS radar is about 90 miles west of the storm. The strong radar circulation at
546 pm CDT was 6.7 miles southwest of Van and was moving to the east northeast.

 

radar velocfity data showing circulation