Aug 9, 2022 1630 UTC Day 1 Convective Outlook
Updated: Tue Aug 9 16:48:04 UTC 2022 (20220809 1630Z Day 1 shapefile | 20220809 1630Z Day 1 KML)
Probabilistic to Categorical Outlook Conversion Table
Categorical Graphic
20220809 1630 UTC Day 1 Outlook Graphic
Day 1 Risk Area (sq. mi.) Area Pop. Some Larger Population Centers in Risk Area
MARGINAL 83,877 37,428,107 New York, NY...Philadelphia, PA...Boston, MA...Newark, NJ...Jersey City, NJ...
Probabilistic Tornado Graphic
20220809 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
No Risk Areas Forecast
Probabilistic Damaging Wind Graphic
20220809 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 % 83,990 37,429,332 New York, NY...Philadelphia, PA...Boston, MA...Newark, NJ...Jersey City, NJ...
Probabilistic Large Hail Graphic
20220809 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
5 % 20,434 248,951 Bend, OR...Redmond, OR...
   SPC AC 091648

   Day 1 Convective Outlook CORR 1
   NWS Storm Prediction Center Norman OK
   1148 AM CDT Tue Aug 09 2022

   Valid 091630Z - 101200Z

   ...THERE IS A MARGINAL RISK OF SEVERE THUNDERSTORMS FROM THE
   MID-ATLANTIC INTO SOUTHERN NEW ENGLAND...AND IN PARTS OF THE
   INTERIOR PACIFIC NORTHWEST....

   CORRECTED FOR HAIL GRAPHIC ERROR

   ...SUMMARY...
   Thunderstorms associated with damaging wind gusts will be possible
   today from the Mid-Atlantic into southern New England, and in parts
   of the Interior Pacific Northwest.

   ...Northeast States...
   A surface cold front is analyzed this morning from central New
   England into central PA.  This front will sag southeastward today
   into a hot/moist low-level environment with temperatures in the 90s
   and dewpoints in the 70s.  Forecast soundings show weak mid-level
   lapse rates and warm temperatures aloft, which should be negative
   factors for convective coverage and intensity.  Nevertheless, at
   least isolated thunderstorms are expected to form on the front later
   today, with the strongest cells posing a risk of locally damaging
   wind gusts.  

   ...Central OR...
   A large upper low is present off the coast of northern CA today,
   with rather strong southerly deep-layer flow extending northward
   across much of western and central OR.  12z model guidance continues
   to show multiple waves of convection affecting the MRGL risk area
   through this evening, where sufficient CAPE and deep-layer shear
   will be present for a few organized storms.  The main threat appears
   to be locally damaging wind gusts in pockets of stronger heating,
   but an isolated supercell or two cannot be ruled out, with an
   associated risk of gusty winds or hail.

   ..Hart/Weinman.. 08/09/2022

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