Overview
In the wake of a cold front resulting from the remnants of Hurricane Beryl, a convective severe weather threat existed for North-Central, Central, and South-Central PA. Straight-line wind gusts were the primary impact, though radar-indicated tornadoes/circulations were present over North-Central PA. A mid-level cap (milder air aloft), despite all other severe weather parameters being in place, kept the storms shorter and storms weaker. |
![]() Courtesy: NWS SPC |
SPC Mesoscale Convective Discussions |
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MCD #1569 Courtesy: NWS SPC |
MCD #1571 Courtesy: NWS SPC |
MCD #1573 Courtesy: NWS SPC |
Radar
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The first line of convection initiated around 11:00 AM EDT (15:00 UTC) roughly 100 miles East of the cold front. | Peak tornadic activity took place around 2:30 PM EDT (18:30 UTC), though most of this occurred in upstate NY. | Near Landisburg, KCCX imagery showed a MARC (Mid-Altitude Reflectivity Convergence) signature indicative of strong downbursts. |
Storm Reports
Environment
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Figure 1: The strong cold front associated with post-tropical storm Beryl is seen in the 18z surface analysis. The line of convection is indicated as a squall line in this analysis. Courtesy NWS WPC |
Figure 2: The cold front moved Eastward. Courtesy NWS WPC |
Near-storm environment summary.
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Figure 4: 7PM EDT Downdraft CAPE Courtesy NWS SPC |
Figure 5: 2:00 PM EDT Storm Relative Helicity Courtesy NWS SPC |
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