01.23.10

Update

Posted in Severe Weather Nowcast at 4:43 pm by Rebekah

My friend Bryan Smith at the Storm Prediction Center recently issued a Mesoscale Discussion for pretty much the region I just outlined (see below). Convection is increasing in this area and the SPC is monitoring the area, considering issuing a Severe Thunderstorm Watch for high winds:

A MID/UPPER SPEED MAX IS RAPIDLY MOVING EWD ACROSS PARTS OF CNTRL AND ERN TX WITH A PRONOUNCED MID-LEVEL DRY INTRUSION DENOTED ON WV IMAGERY NOSING INTO THE ARKLATEX ATTM. SURFACE RESPONSE TO THIS FEATURE IS NOTED WITH 2 MB/HR PRESSURE FALLS ACROSS SERN AR WHERE AN INTENSIFYING LLJ IS FORECAST. FORECAST SOUNDINGS SHOW A MOIST/MARGINAL THERMODYNAMIC ENVIRONMENT…AND WITH TIME…STEEPENING MID-LEVEL LAPSE RATES. STRENGTH OF SHEAR THROUGH THE PROFILE SUGGESTS THE THREAT FOR DMGG WINDS MAY INCREASE THIS AFTERNOON AND SPREAD TO THE NE THIS EVENING. (SPC–Smith)

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