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Current Day 1 Outlook
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Updated at 10:20EDT 8/9
Short term Severe threat
Sunday N 8/9 50% chance of thunderstorms
5% chance of severe weather
Long term Severe threat
Monday 8/10 40% chance of thunderstorms
15% chance of severe weather
SPC Day 1 Outlook: Slight Risk
Posted: 7/10/2007 06:17:00 AM
DAY 1 CONVECTIVE OUTLOOK CORR 1 NWS STORM PREDICTION CENTER NORMAN OK 0122 AM CDT TUE JUL 10 2007
VALID 101200Z - 111200Z
...THERE IS A SLGT RISK OF SVR TSTMS ACROSS PARTS OF NY AND NEW ENGLAND...
...NY/VT/NH/MA... SWLY FLOW ALOFT WILL BE IN PLACE TODAY ACROSS THE REGION WITH A FRONTAL BOUNDARY LOCATED ACROSS NRN NY AND SRN QUEBEC. SOUTH OF THE BOUNDARY...SFC DEWPOINTS SHOULD AGAIN BE IN THE UPPER 60S F AND MODERATE TO STRONG INSTABILITY SHOULD BE IN PLACE BY THIS AFTERNOON. MODEL FORECASTS DEVELOP SCATTERED THUNDERSTORMS ACROSS NRN NY...VT AND NH TODAY AND THIS AREA APPEARS TO HAVE THE GREATEST POTENTIAL FOR MCS DEVELOPMENT.
CONCERNING THE SEVERE POTENTIAL...FORECAST SOUNDINGS ACROSS THE REGION SHOW ADEQUATE DIRECTIONAL SHEAR IN THE LOW-LEVELS AND ENOUGH FLOW IN THE MID-LEVELS FOR SUPERCELLS. SUPERCELLS WITH LARGE HAIL POTENTIAL WILL BE MOSTLY LIKELY IN AREAS WITH THE STRONGEST INSTABILITY. IN ADDITION...STEEP LOW-LEVEL LAPSE RATES WILL FAVOR WIND DAMAGE WITH THE GREATEST THREAT ASSOCIATED WITH MCS DEVELOPMENT LATE THIS AFTERNOON.