Mar 15, 2019 1630 UTC Day 1 Convective Outlook
Updated: Fri Mar 15 16:30:51 UTC 2019 (20190315 1630Z Day 1 shapefile | 20190315 1630Z Day 1 KML)
Probabilistic to Categorical Outlook Conversion Table
Categorical Graphic
20190315 1630 UTC Day 1 Outlook Graphic
Day 1 Risk Area (sq. mi.) Area Pop. Some Larger Population Centers in Risk Area
MARGINAL 78,478 17,156,490 Philadelphia, PA...Virginia Beach, VA...Raleigh, NC...Norfolk, VA...Greensboro, NC...
Probabilistic Tornado Graphic
20190315 1630 UTC Day 1 Tornado Probabilities Graphic
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.
Day 1 Tornado Risk Area (sq. mi.) Area Pop. Some Larger Population Centers in Risk Area
2 % 34,345 6,670,604 Virginia Beach, VA...Raleigh, NC...Norfolk, VA...Chesapeake, VA...Durham, NC...
Probabilistic Damaging Wind Graphic
20190315 1630 UTC Day 1 Damaging Wind Probabilities 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.
Day 1 Wind Risk Area (sq. mi.) Area Pop. Some Larger Population Centers in Risk Area
5 % 78,536 17,177,091 Philadelphia, PA...Virginia Beach, VA...Raleigh, NC...Norfolk, VA...Greensboro, NC...
Probabilistic Large Hail Graphic
20190315 1630 UTC Day 1 Large Hail Probabilities 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.
Day 1 Hail Risk Area (sq. mi.) Area Pop. Some Larger Population Centers in Risk Area
No Risk Areas Forecast
   SPC AC 151630

   Day 1 Convective Outlook  
   NWS Storm Prediction Center Norman OK
   1130 AM CDT Fri Mar 15 2019

   Valid 151630Z - 161200Z

   ...THERE IS A MARGINAL RISK OF SEVERE THUNDERSTORMS ACROSS THE
   MID-ATLANTIC STATES/CAROLINAS...

   ...SUMMARY...
   Isolated damaging winds and a brief tornado are possible across
   parts of the Mid-Atlantic States and Carolinas between 3 to 9 PM
   EDT.

   ...Mid-Atlantic States/Carolinas...
   Steady height falls are expected across much of the region today in
   conjunction with strengthening deep-layer southwesterly winds
   associated with an amplifying/cyclonically curved belt of westerlies
   from the Ohio Valley toward the northern Appalachians. Scattered
   showers and a few thunderstorms persist at midday across the western
   Carolinas into southwest Virginia coincident with an eastward-moving
   cold front, which will reach the coastal plain by early evening.
   Prevalent multi-layer cloud cover precedes the front at midday, but
   additional low-level moistening (low 60s F surface dewpoints) will
   occur through the afternoon along with general expectations of
   thinning cloud cover across piedmont to coastal portions of the
   Carolinas into southeast Virginia and the Delmarva vicinity. 

   Despite a veered wind profile, a belt of strengthening low/mid-level
   flow, particularly from North Carolina northward, will support
   modestly enlarged hodographs and a few weak to moderately rotating
   updrafts appear probable. Isolated damaging winds should be the
   primary hazard, although a tornado cannot be ruled out mainly across
   east-central North Carolina and southeast Virginia. Parts of the
   region will continue to be reevaluated this afternoon for a somewhat
   more focused corridor of severe potential related to a possible
   Slight Risk upgrade.

   ..Guyer/Smith.. 03/15/2019

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   NOTE: THE NEXT DAY 1 OUTLOOK IS SCHEDULED BY 2000Z