Day 1 Convective Outlook NWS Storm Prediction Center Norman OK 0758 PM CDT Wed Jul 22 2020 Valid 230100Z - 231200Z ...THERE IS A MARGINAL RISK OF SEVERE THUNDERSTORMS OVER SOUTHERN NEW ENGLAND...AND FROM FAR NORTHERN CALIFORNIA INTO SOUTHEAST OREGON... ...SUMMARY... Only isolated strong storms are likely this evening over southern New England, and from far northern California into southeast Oregon. ...Southern New England... Thunderstorms that moved over the I-95 corridor produced significant outflow, stabilizing much of the region. Pockets of better instability remain over southern New England, ahead of a smattering of storms. However, cooler/more stable air exists from RI/eastern MA into ME. Therefore, only a small window exists in time and space for an isolated severe storm, with a gradually decreasing threat anticipated. ...Northern CA into southeast OR and northwest NV... 00Z soundings from the region weak depict winds aloft and only a few hundred J/kg MLCAPE. Objective analysis indicates pockets of 500 J/kg MLCAPE may exist in between existing showers/storms. A few stronger cores have been noted on radar over northern CA, with more general thunderstorm activity extending eastward across NV. A few hours of gusty wind potential remain, but the overall threat appears low. ...Central Plains... An earlier attempt at a severe storm over northwest KS has failed along the dryline. Other sporadic cells have formed over parts of northeast CO and southeast WY where surface winds are southeasterly, with dewpoints in the 40s contributing to several hundred J/kg MLCAPE. Given time of day and lack of large-scale lift, capping is expected to increase with time. An isolated strong/severe cell cannot be ruled out over the next few hours, with marginal hail or a strong wind gust. ..Jewell.. 07/23/2020Read more
from SPC Forecast Products http://www.spc.noaa.gov/products/outlook/day1otlk_0100.html
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