SPC AC 091657
Day 2 Convective Outlook
NWS Storm Prediction Center Norman OK
1157 AM CDT Sat Sep 09 2017
Valid 101200Z - 111200Z
...THERE IS A SLIGHT RISK OF SEVERE THUNDERSTORMS OVER MUCH OF THE
FLORIDA PENINSULA INTO COASTAL GEORGIA...
...THERE IS A MARGINAL RISK OF SEVERE THUNDERSTORMS FROM FLORIDA
INTO THE COASTAL CAROLINAS...
A few tornadoes are possible across portions of the Florida
Peninsula and coastal Georgia and South Carolina Sunday as Hurricane
Irma impacts the region.
A generally weak flow regime will exist across much of the CONUS as
an upper trough exits the Northeast, and an upper low meanders off
the CA coast. The primary area of concern will be across the
Southeast, from FL across coastal GA and SC where Irma will have an
Elsewhere, sufficient moisture will exist across much of southern CA
into AZ east of the upper low to support daytime thunderstorms.
However, severe weather is not anticipated there.
...Florida into the coastal Southeast...
Adjusted the Slight risk a bit westward across central FL in
coordination with the latest Hurricane Irma center track from NHC.
The most favorable conditions for a few tornadoes will be east of
the center line, where the most robust moisture and instability will
exist, in addition to being climatologically favorable. Models
indicate substantial SRH increasing through the period, and
approaching parts of SC into Monday morning.
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NOTE: THE NEXT DAY 2 OUTLOOK IS SCHEDULED BY 0600Z