Alert archive / New Hampshire / Severe Thunderstorm Warnings in 2020

Severe Thunderstorm Warning 31, NWS Gray, ME

June 22, 2020Cheshire County, Sullivan County, New Hampshire

NWS Gray, ME issued this severe thunderstorm warning at Jun 22, 2020, 3:17 PM EDT for Cheshire County, Sullivan County, New Hampshire. It was in force for 32 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: Jun 22, 2020, 3:17 PM EDT (19:17 UTC)
Expired: Jun 22, 2020, 3:49 PM EDT
In force: 32 min
Issued by: NWS Gray, ME
Area: Storm-based polygon
Hail: 1.0 in
Wind: 60.0 mph

Counties Cheshire County, NH, Sullivan County, NH

The radar

The Boston radar (KBOX), 160 km from the middle of the area, began a volume at 19:20 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

Albany, NY (KALY), launched 12:00Z, 7.3 hours before the alert went out and 139 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: 27 J/kg
Mixed-layer CIN: -136 J/kg
Mixed-layer LCL: 1261 m above ground
0-6 km bulk shear: 4 kt
0-1 km storm-relative helicity: -16 m²/s²
0-3 km storm-relative helicity: 12 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

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 Gray, ME wrote its last area forecast discussion before this severe thunderstorm warning went out at Jun 22, 10:30 AM EDT, 4 hours 47 minutes earlier.

Area forecast discussion, Jun 22, 10:30 AM EDT, 4 hours 47 minutes before

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Hazardous weather outlook, Jun 22, 6:45 AM EDT, 8 hours 32 minutes before

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In the hours before

Special weather statement, Jun 22, 2:12 PM EDT, 1 hour 5 minutes before

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Special weather statement, Jun 22, 2:23 PM EDT, 54 minutes before

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Special weather statement, Jun 22, 2:36 PM EDT, 41 minutes before

Special Weather Statement
National Weather Service Gray ME
236 PM EDT Mon Jun 22 2020

NHZ007-011-221900-
Cheshire-Sullivan-
236 PM EDT Mon Jun 22 2020

...A STRONG THUNDERSTORM WILL AFFECT SOUTHWESTERN SULLIVAN COUNTY...

At 235 PM EDT, a strong thunderstorm was located 7 miles north of
Marlow, or 11 miles southeast of Claremont, moving east at 10 mph.

Winds in excess of 40 mph and pea size hail are possible with this
storm.

Locations impacted include...
Charlestown, Newport, Marlow, Lempster, Acworth, Goshen, Unity and
Washington.

If outdoors, consider seeking shelter inside a building.

LAT...LON 4317 7233 4331 7236 4336 7213 4315 7210
TIME...MOT...LOC 1835Z 261DEG 7KT 4323 7225

DS

Special weather statement, Jun 22, 2:54 PM EDT, 23 minutes before

Special Weather Statement
National Weather Service Gray ME
254 PM EDT Mon Jun 22 2020

MEZ007-008-221930-
Northern Oxford-Northern Franklin-
254 PM EDT Mon Jun 22 2020

...A STRONG THUNDERSTORM WILL AFFECT WEST CENTRAL FRANKLIN COUNTY...

At 254 PM EDT, a strong thunderstorm was located near Rangeley,
moving northeast at 10 mph.

Winds in excess of 40 mph and pea size hail are possible with this
storm.

Locations impacted include...
Eustis, Rangeley, Dallas Plantation, Stetsontown, Tim Pond, Lang,
Coplin Plantation, Davis, Rangeley Plantation, Sandy River
Plantation, Jim Pond, Alder Stream, Seven Ponds, Redington and
Richardsontown.

If outdoors, consider seeking shelter inside a building.

LAT...LON 4489 7080 4520 7076 4525 7045 4494 7051
TIME...MOT...LOC 1854Z 237DEG 10KT 4507 7063

DS

Special weather statement, Jun 22, 3:00 PM EDT, 17 minutes before

Special Weather Statement
National Weather Service Gray ME
300 PM EDT Mon Jun 22 2020

NHZ007-011-221930-
Cheshire-Sullivan-
300 PM EDT Mon Jun 22 2020

...A STRONG THUNDERSTORM WILL AFFECT SOUTHWESTERN SULLIVAN AND NORTH
CENTRAL CHESHIRE COUNTIES...

At 300 PM EDT, a strong thunderstorm was located near Alstead, or 7
miles east of Bellows Falls. The storm is nearly stationary.

Winds in excess of 40 mph and pea size hail are possible with this
storm.

Locations impacted include...
Charlestown, Marlow, Alstead, Walpole, Surry, Newport, Lempster,
Acworth, Langdon, Unity and Washington.

If outdoors, consider seeking shelter inside a building.

LAT...LON 4320 7244 4322 7244 4323 7243 4325 7244
      4328 7241 4334 7223 4313 7213 4304 7236
      4318 7245 4318 7244 4319 7245
TIME...MOT...LOC 1900Z 144DEG 3KT 4316 7230

DS

Special weather statement, Jun 22, 3:06 PM EDT, 11 minutes before

Special Weather Statement
National Weather Service Gray ME
306 PM EDT Mon Jun 22 2020

NHZ002-221930-
Southern Coos-
306 PM EDT Mon Jun 22 2020

...A STRONG THUNDERSTORM WILL AFFECT SOUTHEASTERN COOS COUNTY...

At 306 PM EDT, a strong thunderstorm was located 9 miles northwest of
Mount Washington, or 11 miles southeast of Lancaster. The storm is
nearly stationary.

Winds in excess of 40 mph and half inch hail are possible with this
storm.

Locations impacted include...
Berlin, Lancaster, Carroll, Gorham, Jefferson, Dummer, Milan,
Shelburne, Randolph, Stark and Northumberland.

If outdoors, consider seeking shelter inside a building.

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.

LAT...LON 4435 7115 4429 7148 4451 7153 4464 7117
TIME...MOT...LOC 1906Z 309DEG 2KT 4439 7140

DS

The office that day

Everything else NWS Gray, ME issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Jun 21, 9:01 PM EDT	Dense Fog Advisory	GYX	Androscoggin, Cumberland, Kennebec, Knox, Lincoln, Sagadahoc and 1 more	10 hr
Jun 22, 11:18 AM EDT	Special Weather Statement	GYX	Franklin	27 min
Jun 22, 1:31 PM EDT	Special Weather Statement	GYX	Franklin	29 min
Jun 22, 2:12 PM EDT	Special Weather Statement	GYX	Somerset	33 min
Jun 22, 2:23 PM EDT	Special Weather Statement	GYX	Franklin	37 min
Jun 22, 2:54 PM EDT	Special Weather Statement	GYX	Franklin	36 min
Jun 22, 4:49 PM EDT	Special Weather Statement	GYX	Somerset	26 min
Jun 22, 2:36 PM EDT	Special Weather Statement	GYX	Sullivan	24 min
Jun 22, 3:00 PM EDT	Special Weather Statement	GYX	Sullivan	30 min
Jun 22, 3:06 PM EDT	Special Weather Statement	GYX	Coos	24 min
Jun 22, 3:34 PM EDT	Special Weather Statement	GYX	Coos	26 min
Jun 22, 3:46 PM EDT	Areal Flood Advisory	GYX	Cheshire, Sullivan	2 hr
Jun 22, 3:51 PM EDT	Areal Flood Advisory	GYX	Coos	114 min
Jun 22, 3:58 PM EDT	Special Weather Statement	GYX	Coos	32 min
Jun 22, 4:35 PM EDT	Flash Flood Warning	GYX	Coos	61 min

Nearby

Severe Thunderstorm Warnings in New Hampshire, 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.