Tornado Watch #99

tornado99.png That’s the Weather Service Bureau Identification for the Tornado Watch that’s been underway since 5:50 tonight and is in effect until 3am. The real part of the rain is supposed to hit tonight after 9pm, and that’s probably when we’ll see a lot of the chance to see tornadic activity here in the DC area. So, be careful out there, and be sure to check various news sources before you hit the sack tonight.

Here’s the pertinent part of the Watch:

DISCUSSION…VERY INTENSE VERTICAL MOTION FIELDS AND LOW/DEEP LAYER SHEAR WILL OVERSPREAD THIS REGION THROUGH TONIGHT AS STRONG UPPER SYSTEM BEGINS TO LIFT NEWD ACROSS THE APPALACHIANS. ALTHOUGH INSTABILITY WILL REMAIN MEAGER…MOISTENING LOW LEVELS CONCURRENT WITH 70+ KT SLY LLJ WILL ENHANCE THE POTENTIAL FOR LOW LEVEL ROTATION AND POSSIBLE TORNADOES. ACTIVITY MAY OCCUR IN TWO BANDS…ONE NOW MOVING INTO CENTRAL NC/VA AND ANOTHER SPREADING ENEWD ALONG THE MAIN COLD FRONT LATER TONIGHT. SEVERE/TORNADO THREAT MAY PERSIST WELL INTO THE NIGHT UNTIL THE LATER BAND MOVES OFFSHORE.

If you spot a tornado, please seek shelter.

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