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LW3DBH > ALERT 18.04.20 02:22z 72 Lines 3550 Bytes #999 (0) @ WW
BID : 61993_LW3DBH
Read: GUEST
Subj: Storm Prediction Center 17 04
Path: HB9ON<IK7NXU<IK6IHL<IZ3LSV<IR1UAW<I0OJJ<LU4ECL<LW3DBH
Sent: 200418/0208Z @:LW3DBH.1744.BA.ARG.SA #:61993 [MORENO] FBB7.00i $:61993_LW
From: LW3DBH@LW3DBH.1744.BA.ARG.SA
To : ALERT@WW
_ __ _______ ____ ____ _ _
| |\ \ / /___ /| _ \| __ )| | | | BBS
| | \ \ /\ / / |_ \| | | | _ \| |_| | MORENO
| |__\ V V / ___) | |_| | |_) | _ | ARGENTINA
|_____\_/\_/ |____/|____/|____/|_| |_|
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MD 0394 CONCERNING HEAVY SNOW FOR CENTRAL PENNSYLVANIA INTO THE
FINGER LAKES AND CATSKILLS OF NEW YORK
Mesoscale Discussion 0394 NWS Storm Prediction Center Norman OK
0555 PM CDT Fri Apr 17 2020
Areas affected...central Pennsylvania into the Finger Lakes and
Catskills of New York
Concerning...Heavy snow
Valid 172255Z - 180300Z
SUMMARY...Heavy snow is possible across portions of central
Pennsylvania into the Finger Lakes and Catskills this
evening/tonight. Snowfall rates of 1 inch per hour are likely.
DISCUSSION...A positively-tilted upper-level shortwave trough is
tracking east-southeast across the Great Lakes with weak, relative
vorticity maxima spreading eastward downstream over Pennsylvania
and the Northeast. A dual surface low structure has developed with
one low in central Ohio and the other in far eastern Kentucky. An
attendant warm front is draped east-west from central Ohio through
central Pennsylvania with an area below freezing across southern
New York/northern Pennsylania. Low-level warm-air advection and
frontogenesis within 900-700 mb are resulting in precipitation
across the region. Model soundings indicate marginal instability
within the dendritic growth zone with upward motion values mostly
supporting 0.5 to 1 inch per hour snowfall rates. However, upslope
enhancement will aid snowfall rates across parts of the area. A
downstream heavy snow MD may also be needed later this evening for
portions of New York into central/southern New England.
..Nauslar/Goss.. 04/17/2020
...Please see www.spc.noaa.gov for graphic product...
ATTN...WFO...ALY...BGM...BUF...CTP...PBZ...
LAT...LON 42117859 41627899 41227892 40837835 40887756 41167679
41437583 41537536 41617491 41717457 42077415 42767426 42937497
42917597 42647767 42117859
SPC 0100Z Day 1 Outlook
Day 1 Convective Outlook NWS Storm Prediction Center Norman OK 0758
PM CDT Fri Apr 17 2020
Valid 180100Z - 181200Z
...THERE IS A MARGINAL RISK OF SEVERE THUNDERSTORMS ACROSS PARTS
OF SOUTHEAST TEXAS AND SOUTHWEST LOUISIANA...
...SUMMARY... A few marginally severe thunderstorms with strong
wind gusts and hail may occur across parts of southeast Texas and
southwest Louisiana this evening.
...Southeast Texas/Southwest Louisiana... An upper-level trough will
move across the mid Mississippi Valley tonight as westerly mid-level
flow remains from the southern Plains into the Southeast. At the
surface, a cold front will advance southeastward across the Arklatex
and Texas Coastal Plains this evening. A moist airmass is in place
ahead of the front with surface dewpoints in the upper 60s to near
70 F. This has resulted in some destabilization from the Texas
Coastal Plains into southwest Louisiana. The instability combined
with strong deep-layer shear, evident on the Houston WSR-88D VWP,
may be enough for marginally severe thunderstorms this evening. Hail
and strong wind gusts would be the primary threats.
..Broyles.. 04/18/2020
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The mature bohemian is one whose woman works full time.
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