Probability of a tornado within 25 miles of a point. Hatched Area: 10% or greater probability of EF2 - EF5 tornadoes within 25 miles of a point.
Tornado Risk
Area (sq. mi.)
Area Pop.
Some Larger Population Centers in Risk Area
No Risk Areas Forecast
Probabilistic Damaging Wind Graphic
Probability of damaging thunderstorm winds or wind gusts of 50 knots or higher within 25 miles of a point. Hatched Area: 10% of greater probability of wind gusts 65 knots or greater within 25 miles of a point.
Wind Risk
Area (sq. mi.)
Area Pop.
Some Larger Population Centers in Risk Area
No Risk Areas Forecast
Probabilistic Large Hail Graphic
Probability of hail 1" or larger within 25 miles of a point. Hatched Area: 10% or greater probability of hail 2" or larger within 25 miles of a point.
Hail Risk
Area (sq. mi.)
Area Pop.
Some Larger Population Centers in Risk Area
No Risk Areas Forecast
SPC AC 080520
DAY 1 CONVECTIVE OUTLOOK
NWS STORM PREDICTION CENTER NORMAN OK
1120 PM CST SUN DEC 07 2014
VALID 081200Z - 091200Z
...NO SVR TSTM AREAS FORECAST...
...SUMMARY...
A FEW NON-SEVERE THUNDERSTORMS WILL BE POSSIBLE ALONG THE MIDDLE
ATLANTIC COAST MONDAY NIGHT. ELSEWHERE...THUNDERSTORMS ARE NOT
FORECAST.
...SYNOPSIS...
AMPLIFICATION OF THE MID/UPPER-LEVEL PATTERN WILL BE UNDERWAY ACROSS
THE ERN CONUS ON MONDAY...AS A SHORTWAVE TROUGH TRANSITING SE ACROSS
THE MIDWEST PHASES WITH AN EWD-MOVING SRN-STREAM TROUGH. RESULTANT
SFC CYCLOGENESIS WILL OCCUR OFF THE MIDDLE ATLANTIC COAST MONDAY
NIGHT. AS THE SFC LOW PRESSURE DEEPENS TO THE E OF THE DELMARVA
PENINSULA...INCREASING FRONTOGENETIC FORCING AND ADIABATIC ASCENT TO
ITS N/W WILL YIELD AN EXPANDING AREA OF PCPN ACROSS THE REGION. FCST
SOUNDINGS ALONG/NEAR THE COAST INDICATE MARGINAL ELEVATED BUOYANCY
SHOULD EXTEND THROUGH A SUFFICIENT DEPTH OF THE MIXED-PHASE
LAYER...WITH A SUBSEQUENT RISK OF ISOLATED TSTMS NEAR THE IMMEDIATE
NC/VA COAST.
A CONTINENTAL AIR MASS WILL BE ESTABLISHED ACROSS MUCH OF THE
REMAINDER OF THE CONUS...KEEPING ANY THUNDERSTORM POTENTIAL NEAR
ZERO.
..PICCA/SMITH.. 12/08/2014
CLICK TO GET WUUS01 PTSDY1 PRODUCT
NOTE: THE NEXT DAY 1 OUTLOOK IS SCHEDULED BY 1300Z
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