Ticker for March 28, 2003

                
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March 28, 2003     March 28, 2003     March 28, 2003     March 28, 2003


Meteogram Reflects Close Passage of Tornadic Supercell

Early last week, a tornadic supercell passed within a few miles
of the Mesonet site at Hobart.  The meteogram from that site gives
clear evidence of the mesoscale impact of a supercell:



The build-up to the storm's mid-afternoon passage is very interesting.
Shortly after 1:00 pm, solar radiation values indicated a significant
obstacle to the sun.  At about 2:00 pm, winds at HOBA stiffened, and
began to back from southerly to easterly.  Surface pressure decreased
rapidly at this time.

As the storm's core passed to the west and north of the site, its
outflow appeared as northerly and northwesterly flow of significantly
cooler air, with a coincident pressure spike.

Ticker thanks to Jeff Basara, who spotted this meteogram last week.