Alert archive / New Hampshire / Severe Thunderstorm Warnings in 2021
Severe Thunderstorm Warning 79, NWS Gray, ME
NWS Gray, ME issued this severe thunderstorm warning at Jul 27, 2021, 4:30 PM EDT for Cheshire County, Sullivan County, New Hampshire. It was in force for 45 min. 4 reports came from inside the area while it was in force.
The area
The outline as issued, with what was reported inside it.
The facts
- Issued
- Jul 27, 2021, 4:30 PM EDT (20:30 UTC)
- Expired
- Jul 27, 2021, 5:15 PM EDT
- In force
- 45 min
- Issued by
- NWS Gray, ME
- Area
- Storm-based polygon
- Hail
- 0.75 in
- Wind
- 60.0 mph
Counties Cheshire County, NH, Sullivan County, NH
The radar
The Burlington radar (KCXX), 159 km from the middle of the area, began a volume at 20:31 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.
What was reported inside it
| Time | Report | Where | Remark |
|---|---|---|---|
| Jul 27, 4:54 PM EDT | TSTM WND DMG | 1 Nne Charlestown, NH | TREE DOWN NEAR RT 12 NEAR PONDEROSA PARK. |
| Jul 27, 4:55 PM EDT | TSTM WND DMG | 1 S Charlestown, NH | TREE DOWN ON ALMAR ST OFF OF ROUTE 12. |
| Jul 27, 5:00 PM EDT | TSTM WND DMG | 4 Wnw Marlow, NH | TREE DOWN ON OLD SETTLERS RD. |
| Jul 27, 5:01 PM EDT | TSTM WND DMG | Alstead, NH | ALSTEAD FIRE REPORTED MULTIPLE TREE AND WIRES DOWN THROUGHOUT TOWN. |
Local storm reports filed while the alert was in force, from inside its polygon or its counties.
The watch it was issued in
The SPC watch in force over the same counties when this warning went out.
| Issued | Product | Office | Lasted |
|---|---|---|---|
| Jul 27, 2:47 PM EDT | Severe Thunderstorm Watch | SPC | 6 hr |
The nearest sounding before it
Albany, NY (KALY), launched 12:00Z, 8.5 hours before the alert went out and 142 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.
- Mixed-layer CAPE
- 0 J/kg
- Mixed-layer CIN
- No buoyant parcel
- Mixed-layer LCL
- 1464 m above ground
- 0-6 km bulk shear
- 44 kt
- 0-1 km storm-relative helicity
- 35 m²/s²
- 0-3 km storm-relative helicity
- 46 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
417
WUUS51 KGYX 272030
SVRGYX
NHC005-019-272115-
/O.NEW.KGYX.SV.W.0079.210727T2030Z-210727T2115Z/
BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Gray ME
430 PM EDT Tue Jul 27 2021
The National Weather Service in Gray Maine has issued a
* Severe Thunderstorm Warning for...
Southern Sullivan County in central New Hampshire...
Northern Cheshire County in southern New Hampshire...
* Until 515 PM EDT.
* At 429 PM EDT, a severe thunderstorm was located 11 miles northwest
of Charlestown, or 11 miles west of Claremont, moving southeast at
45 mph.
HAZARD...60 mph wind gusts and penny size hail.
SOURCE...Radar indicated.
IMPACT...Expect damage to roofs, siding, and trees.
* Locations impacted include...
Claremont, Charlestown, Antrim, Bradford, Harrisville, Nelson,
Newport, Gilsum, Marlow, Walpole, Sullivan, Alstead, Surry,
Windsor, Lempster, Acworth, Goshen, Langdon, Washington and Unity.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
For your protection move to an interior room on the lowest floor of a
building.
&&
LAT...LON 4323 7243 4325 7244 4331 7240 4334 7241
4336 7239 4338 7242 4342 7240 4335 7207
4332 7209 4327 7207 4325 7204 4322 7204
4319 7201 4318 7204 4316 7202 4295 7207
4307 7245 4311 7243 4314 7246
TIME...MOT...LOC 2029Z 294DEG 38KT 4335 7258
HAIL...0.75IN
WIND...60MPH
$$
Clair1 follow-up statement
927
WWUS51 KGYX 272059
SVSGYX
Severe Weather Statement
National Weather Service Gray ME
459 PM EDT Tue Jul 27 2021
NHC005-019-272115-
/O.CON.KGYX.SV.W.0079.000000T0000Z-210727T2115Z/
Sullivan NH-Cheshire NH-
459 PM EDT Tue Jul 27 2021
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 515 PM EDT
FOR SOUTHERN SULLIVAN AND NORTHERN CHESHIRE COUNTIES...
At 459 PM EDT, a severe thunderstorm was located near Charlestown, or
10 miles south of Claremont, moving southeast at 35 mph.
HAZARD...60 mph wind gusts and penny size hail.
SOURCE...Radar indicated.
IMPACT...Expect damage to roofs, siding, and trees.
Locations impacted include...
Claremont, Charlestown, Antrim, Bradford, Harrisville, Nelson,
Newport, Gilsum, Marlow, Walpole, Sullivan, Alstead, Surry, Windsor,
Lempster, Acworth, Goshen, Langdon, Washington and Unity.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
For your protection move to an interior room on the lowest floor of a
building.
&&
LAT...LON 4323 7243 4325 7244 4331 7240 4334 7241
4336 7239 4338 7242 4342 7240 4335 7207
4332 7209 4327 7207 4325 7204 4322 7204
4319 7201 4318 7204 4316 7202 4295 7207
4307 7245 4311 7243 4314 7246
TIME...MOT...LOC 2059Z 295DEG 29KT 4322 7231
HAIL...0.75IN
WIND...60MPH
$$
ClairThe office that day
Everything else NWS Gray, ME issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 27, 5:13 PM EDT | Special Weather Statement | GYX | Cheshire | 32 min |
| Jul 27, 5:38 PM EDT | Special Weather Statement | GYX | Strafford | 37 min |
| Jul 27, 6:00 PM EDT | Special Weather Statement | GYX | Rockingham | 30 min |
| Jul 27, 6:16 PM EDT | Special Weather Statement | GYX | Strafford | 29 min |
| Jul 27, 6:30 PM EDT | Special Weather Statement | GYX | Rockingham | 30 min |
| Jul 27, 6:36 PM EDT | Severe Thunderstorm Warning | GYX | Rockingham, Strafford | 39 min |
| Jul 27, 6:54 PM EDT | Areal Flood Advisory | GYX | Rockingham, Strafford | 111 min |
Nearby
Severe Thunderstorm Warnings in New Hampshire, 2021Every severe thunderstorm warning in 2021
Sources
The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.