Alert archive / New York / Severe Thunderstorm Warnings in 2020

Severe Thunderstorm Warning 116, NWS Binghamton, NY

August 27, 20204 counties in New York

NWS Binghamton, NY issued this severe thunderstorm warning at Aug 27, 2020, 4:30 PM EDT for 4 counties in New York. It was in force for 45 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: Aug 27, 2020, 4:30 PM EDT (20:30 UTC)
Expired: Aug 27, 2020, 5:15 PM EDT
In force: 45 min
Issued by: NWS Binghamton, NY
Area: Storm-based polygon
Tornado: Possible
Hail: 1.25 in
Wind: 70.0 mph

Counties Chemung County, NY, Schuyler County, NY, Tioga County, NY, Tompkins County, NY

The radar

The Binghamton radar (KBGM), 52 km from the middle of the area, began a volume at 20:34 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 watch it was issued in

The SPC watch in force over the same counties when this warning went out.

Issued	Product	Office	Lasted
Aug 27, 1:22 PM EDT	Tornado Watch	SPC	7 hr
Aug 27, 2:49 PM EDT	Severe Thunderstorm Watch	SPC	5 hr

The nearest sounding before it

Buffalo Intl Airport, NY (KBUF), launched 12:00Z, 8.5 hours before the alert went out and 186 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-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

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: 1176 J/kg
Mixed-layer CIN: -43 J/kg
Mixed-layer LCL: 832 m above ground
0-6 km bulk shear: 54 kt
0-1 km storm-relative helicity: 246 m²/s²
0-3 km storm-relative helicity: 245 m²/s²
Significant tornado parameter: 1.5
Supercell composite: 8.5

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 Binghamton, NY wrote its last area forecast discussion before this severe thunderstorm warning went out at Aug 27, 4:14 PM EDT, 16 minutes earlier.

Area forecast discussion, Aug 27, 4:14 PM EDT, 16 minutes before

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Hazardous weather outlook, Aug 27, 4:21 PM EDT, 9 minutes before

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In the hours before

Local storm report, Aug 27, 2:54 PM EDT, 1 hour 36 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE BINGHAMTON NY
254 PM EDT THU AUG 27 2020

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

0150 PM     TSTM WND DMG     4 SE TRUXTON            42.68N 75.98W
08/27/2020                   CORTLAND           NY   911 CALL CENTER

            TREE DOWN ON HICKEY AND BROWN ROADS NEAR
            CAMPGROUND.

&&

Special weather statement, Aug 27, 3:27 PM EDT, 1 hour 3 minutes before

Special Weather Statement
National Weather Service Binghamton NY
327 PM EDT Thu Aug 27 2020

NYZ023-025-055-272000-
Schuyler NY-Tioga NY-Tompkins NY-
327 PM EDT Thu Aug 27 2020

...A STRONG THUNDERSTORM WILL AFFECT EAST CENTRAL SCHUYLER...CENTRAL
TIOGA...AND SOUTHERN TOMPKINS COUNTIES UNTIL 400 PM EDT...

At 326 PM EDT, Doppler radar was tracking a strong thunderstorm near
Alpine, or near Odessa, moving southeast at 45 mph.

Half inch hail and winds in excess of 40 mph will be possible with
this storm.

Locations impacted include...
Newfield, Owego, Danby, Berkshire, Newark Valley, Candor, Spencer,
South Danby, Willseyville and West Danby.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Frequent cloud to ground lightning is occurring with this storm.
Lightning can strike 10 miles away from a thunderstorm. Seek a safe
shelter inside a building or vehicle.

Additional statements will be issued as conditions warrant.

&&

A Severe Thunderstorm Watch remains in effect until 800 PM EDT for
central New York.

LAT...LON 4235 7677 4241 7671 4229 7610 4227 7608
      4226 7610 4224 7609 4208 7619 4224 7654
      4228 7654 4228 7663
TIME...MOT...LOC 1926Z 295DEG 40KT 4235 7667

Butts

Local storm report, Aug 27, 3:30 PM EDT, 1 hour before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE BINGHAMTON NY
330 PM EDT THU AUG 27 2020

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

0320 PM     TSTM WND DMG     SENECA FALLS            42.91N 76.80W
08/27/2020                   SENECA             NY   911 CALL CENTER

            TREES AND WIRES DOWN ON LAKE ROAD.

&&

Local storm report, Aug 27, 3:43 PM EDT, 47 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE BINGHAMTON NY
343 PM EDT THU AUG 27 2020

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

0319 PM     TSTM WND DMG     SENECA FALLS            42.91N 76.80W
08/27/2020                   SENECA             NY   911 CALL CENTER

            TREES AND WIRES DOWN ON BOSTON AVE.

&&

Local storm report, Aug 27, 4:11 PM EDT, 19 minutes before

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Local storm report, Aug 27, 4:21 PM EDT, 9 minutes before

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The office that day

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

Issued	Product	Office	Counties	Lasted
Aug 27, 7:47 AM EDT	Special Weather Statement	BGM	Onondaga	58 min
Aug 27, 8:29 AM EDT	Special Weather Statement	BGM	Madison, Onondaga	61 min
Aug 27, 8:37 AM EDT	Severe Thunderstorm Warning	BGM	Chenango, Cortland, Madison, Onondaga	53 min
Aug 27, 9:06 AM EDT	Severe Thunderstorm Warning	BGM	Chenango, Delaware, Madison, Otsego	54 min
Aug 27, 11:24 AM EDT	Special Weather Statement	BGM	Madison, Onondaga	36 min
Aug 27, 11:52 AM EDT	Special Weather Statement	BGM	Otsego	23 min
Aug 27, 1:03 PM EDT	Severe Thunderstorm Warning	BGM	Cayuga, Cortland, Onondaga	42 min
Aug 27, 1:12 PM EDT	Tornado Warning	BGM	Delaware, Otsego	33 min
Aug 27, 1:42 PM EDT	Tornado Warning	BGM	Delaware	33 min
Aug 27, 1:44 PM EDT	Severe Thunderstorm Warning	BGM	Chenango, Cortland	46 min
Aug 27, 2:13 PM EDT	Severe Thunderstorm Warning	BGM	Broome, Chenango, Cortland, Tompkins	47 min
Aug 27, 2:26 PM EDT	Severe Thunderstorm Warning	BGM	Broome, Chenango, Delaware	49 min
Aug 27, 2:59 PM EDT	Severe Thunderstorm Warning	BGM	Broome, Chenango, Delaware	46 min
Aug 27, 3:10 PM EDT	Severe Thunderstorm Warning	BGM	Delaware, Sullivan	65 min
Aug 27, 3:13 PM EDT	Severe Thunderstorm Warning	BGM	Cayuga, Onondaga, Seneca	47 min
Aug 27, 3:27 PM EDT	Special Weather Statement	BGM	Tioga	33 min
Aug 27, 3:43 PM EDT	Severe Thunderstorm Warning	BGM	Schuyler, Seneca, Steuben, Yates	47 min
Aug 27, 3:46 PM EDT	Severe Thunderstorm Warning	BGM	Broome, Cortland, Tioga, Tompkins	29 min
Aug 27, 3:46 PM EDT	Severe Thunderstorm Warning	BGM	Broome, Delaware, Sullivan	59 min
Aug 27, 4:11 PM EDT	Severe Thunderstorm Warning	BGM	Broome, Chenango, Cortland, Tioga	49 min
Aug 27, 4:21 PM EDT	Severe Thunderstorm Warning	BGM	Sullivan	24 min
Aug 27, 4:29 PM EDT	Areal Flood Advisory	BGM	Schuyler, Seneca, Steuben, Yates	3 hr
Aug 27, 4:52 PM EDT	Severe Thunderstorm Warning	BGM	Broome, Tioga	38 min
Aug 27, 4:56 PM EDT	Severe Thunderstorm Warning	BGM	Broome, Chenango, Delaware, Sullivan	64 min
Aug 27, 5:23 PM EDT	Severe Thunderstorm Warning	BGM	Broome, Delaware, Sullivan	37 min
Aug 27, 5:29 PM EDT	Areal Flood Advisory	BGM	Broome, Chemung, Schuyler, Tioga, Tompkins	3 hr
Aug 27, 5:31 PM EDT	Special Weather Statement	BGM	Broome, Chemung, Schuyler, Tioga, Tompkins, Yates	59 min
Aug 27, 5:50 PM EDT	Severe Thunderstorm Warning	BGM	Delaware, Sullivan	55 min
Aug 27, 6:19 PM EDT	Special Weather Statement	BGM	Chemung, Tioga	56 min
Aug 27, 6:31 PM EDT	Special Weather Statement	BGM	Seneca	44 min
Aug 27, 7:14 PM EDT	Special Weather Statement	BGM	Lackawanna, Susquehanna, Wayne, Wyoming	61 min
Aug 27, 7:51 PM EDT	Special Weather Statement	BGM	Pike, Wayne	54 min

Nearby

Severe Thunderstorm Warnings in New York, 2020 Every 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.