Alert archive / Vermont / Severe Thunderstorm Warnings in 2020

Severe Thunderstorm Warning 78, NWS Albany, NY

July 23, 2020Windham County, Vermont

NWS Albany, NY issued this severe thunderstorm warning at Jul 23, 2020, 9:26 PM EDT for Windham County, Vermont. It was in force for 19 min. No storm report in the archive falls inside the area while it was in force.

The area

The counties it named.

The facts

Issued
Jul 23, 2020, 9:26 PM EDT (01:26 UTC)
Expired
Jul 23, 2020, 9:45 PM EDT
In force
19 min
Issued by
NWS Albany, NY
Area
Storm-based polygon
Hail
0.75 in
Wind
60.0 mph

County Windham County, VT

The radar

The Albany radar (KENX), 119 km from the middle of the area, began a volume at 01:27 UTC, the scan nearest the moment this went out.

Open the radar archive at this moment

The archived warnings, watches and discussions in force at that minute are drawn over the scan, this one among them.

The nearest sounding before it

Gray, ME (KGYX), launched 00:00Z, 1.4 hours before the alert went out and 222 km from the middle of its area. This is the routine balloon launch nearest before it, the air the forecaster had in hand, not a measurement taken for the alert.

Skew-T log-pSkew-T log-p diagram, Gray, ME at 00:00Z on 2020-07-24Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 981 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Gray, ME at 00:00Z on 2020-07-24The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 25 square meters per square second.19395878Sfc1 km3 km6 km9 kmRMLM
The wind turning with height, colored by layer: ground to 1 km, 1 to 3 km, 3 to 6 km, 6 to 10 km.
Mixed-layer CAPE
981 J/kg
Mixed-layer CIN
-23 J/kg
Mixed-layer LCL
673 m above ground
0-6 km bulk shear
35 kt
0-1 km storm-relative helicity
25 m²/s²
0-3 km storm-relative helicity
64 m²/s²
Significant tornado parameter
0.1
Supercell composite
0.8

Open this sounding in Storm Lab

What forecasters said that day

The local office's own words before this severe thunderstorm warning went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.

NWS Albany, NY wrote its last area forecast discussion before this severe thunderstorm warning went out at Jul 23, 7:46 PM EDT, 1 hour 40 minutes earlier.

Area forecast discussion, Jul 23, 7:46 PM EDT, 1 hour 40 minutes before
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Hazardous weather outlook, Jul 23, 7:52 PM EDT, 1 hour 34 minutes before
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In the hours before

Local storm report, Jul 23, 6:20 PM EDT, 3 hours 6 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE ALBANY NY
620 PM EDT THU JUL 23 2020

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0600 PM     FUNNEL CLOUD     2 ENE ESPERANCE         42.77N  74.22W
07/22/2020                   SCHENECTADY        NY   TRAINED SPOTTER

            SPOTTER PROVIDED PICTURE. NWS EMPLOYEE SURVEYED AREA
            TODAY FOR POSSIBLE TORNADO. NONE FOUND.

&&

EVENT NUMBER ALY2002599

SND
Local storm report, Jul 23, 6:40 PM EDT, 2 hours 46 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE ALBANY NY
640 PM EDT THU JUL 23 2020

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0550 PM     TSTM WND DMG     STOCKBRIDGE             42.28N  73.31W
07/23/2020                   BERKSHIRE          MA   LAW ENFORCEMENT

            TREES DOWN

0600 PM     TSTM WND DMG     5 WSW SANDISFIELD       42.09N  73.23W
07/23/2020                   BERKSHIRE          MA   LAW ENFORCEMENT

0611 PM     TSTM WND DMG     SW LEE                  42.31N  73.25W
07/23/2020                   BERKSHIRE          MA   LAW ENFORCEMENT

&&

EVENT NUMBER ALY2002600
EVENT NUMBER ALY2002601
EVENT NUMBER ALY2002602

NAS
Special weather statement, Jul 23, 7:22 PM EDT, 2 hours 4 minutes before
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Special weather statement, Jul 23, 7:47 PM EDT, 1 hour 39 minutes before
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Special weather statement, Jul 23, 7:48 PM EDT, 1 hour 38 minutes before
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Local storm report, Jul 23, 7:55 PM EDT, 1 hour 31 minutes before
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The office that day

Everything else NWS Albany, NY issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Jul 23, 8:13 PM EDTSpecial Weather StatementALYDutchess62 min
Jul 23, 8:56 PM EDTSpecial Weather StatementALYWindham34 min

Nearby

Severe Thunderstorm Warnings in Vermont, 2020Every severe thunderstorm warning in 2020

Sources

The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.