Alert archive / New Hampshire / Severe Thunderstorm Warnings in 2022

Severe Thunderstorm Warning 4, NWS Gray, ME

May 16, 20224 counties in New Hampshire

NWS Gray, ME issued this severe thunderstorm warning at May 16, 2022, 5:43 PM EDT for 4 counties in New Hampshire. It was in force for 62 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
May 16, 2022, 5:43 PM EDT (21:43 UTC)
Expired
May 16, 2022, 6:45 PM EDT
In force
62 min
Issued by
NWS Gray, ME
Area
Storm-based polygon
Hail
0.88 in
Wind
60.0 mph

Counties Cheshire County, NH, Hillsborough County, NH, Merrimack County, NH, Sullivan County, NH

The radar

The Boston radar (KBOX), 147 km from the middle of the area, began a volume at 21:45 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.

IssuedProductOfficeLasted
May 16, 5:39 PM EDTSevere Thunderstorm WatchSPC5 hr

The nearest sounding before it

Albany, NY (KALY), launched 12:00Z, 9.7 hours before the alert went out and 159 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, Albany, NY at 12:00Z on 2022-05-16Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 0 joules per kilogram.LCL10008507005003002001001 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, Albany, NY at 12:00Z on 2022-05-16The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 4 square meters per square second.193958Sfc1 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
0 J/kg
Mixed-layer CIN
No buoyant parcel
Mixed-layer LCL
772 m above ground
0-6 km bulk shear
24 kt
0-1 km storm-relative helicity
4 m²/s²
0-3 km storm-relative helicity
51 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 May 16, 4:26 PM EDT, 1 hour 17 minutes earlier.

Area forecast discussion, May 16, 4:26 PM EDT, 1 hour 17 minutes before
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Hazardous weather outlook, May 16, 3:40 PM EDT, 2 hours 3 minutes before
Hazardous Weather Outlook
National Weather Service Gray ME
340 PM EDT Mon May 16 2022

NHZ001>013-015-171945-
Northern Coos-Southern Coos-Northern Grafton-Northern Carroll-
Southern Grafton-Southern Carroll-Sullivan-Merrimack-Belknap-
Strafford-Cheshire-Eastern Hillsborough-Interior Rockingham-
Western And Central Hillsborough-
340 PM EDT Mon May 16 2022

This Hazardous Weather Outlook is for New Hampshire, central New
Hampshire, northern New Hampshire and southern New Hampshire.

.DAY ONE...This afternoon and tonight.

Scattered strong to severe thunderstorms will continue this
afternoon and evening across most of New Hampshire. Large hail and
damaging winds are possible.

.DAYS TWO THROUGH SEVEN...Tuesday through Sunday.

Hazardous weather is not expected at this time.

.SPOTTER INFORMATION STATEMENT...

Weather spotters are encouraged to report significant weather
conditions according to Standard Operating Procedures.

MEZ007>009-012>014-018>021-033-171945-
Northern Oxford-Northern Franklin-Central Somerset-Southern Oxford-
Southern Franklin-Southern Somerset-Interior York-
Central Interior Cumberland-Androscoggin-Kennebec-
Interior Cumberland Highlands-
340 PM EDT Mon May 16 2022

This Hazardous Weather Outlook is for Maine, south central Maine,
southwest Maine, west central Maine and western Maine.

.DAY ONE...This afternoon and tonight.

Scattered strong to marginally severe thunderstorms will continue this
afternoon and evening across most of western Maine. Small hail and
gusty winds are possible.

.DAYS TWO THROUGH SEVEN...Tuesday through Sunday.

Hazardous weather is not expected at this time.

.SPOTTER INFORMATION STATEMENT...

Weather spotters are encouraged to report significant weather
conditions according to Standard Operating Procedures.

MEZ023-024-NHZ014-171945-
Coastal York-Coastal Cumberland-Coastal Rockingham-
340 PM EDT Mon May 16 2022

...COASTAL FLOOD ADVISORY IN EFFECT FROM 11 PM THIS EVENING TO 1 AM
EDT TUESDAY...

This Hazardous Weather Outlook is for southwest Maine and southern
New Hampshire.

.DAY ONE...This afternoon and tonight.

Please listen to NOAA Weather Radio or go to weather.gov on the
Internet for more information about the following hazards.

   Coastal Flood Advisory.

Scattered strong to marginally severe thunderstorms will continue this
afternoon and evening. Small hail and gusty winds are possible.

Hazardous weather is not expected at this time.

.DAYS TWO THROUGH SEVEN...Tuesday through Sunday.

Hazardous weather is not expected at this time.

.SPOTTER INFORMATION STATEMENT...

Weather spotters are encouraged to report significant weather
conditions according to Standard Operating Procedures.

MEZ022-025>028-171945-
Interior Waldo-Sagadahoc-Lincoln-Knox-Coastal Waldo-
340 PM EDT Mon May 16 2022

This Hazardous Weather Outlook is for south central Maine.

.DAY ONE...This afternoon and tonight.

Scattered strong to marginally severe thunderstorms will continue this
afternoon and evening. Small hail and gusty winds are possible.

Hazardous weather is not expected at this time.

.DAYS TWO THROUGH SEVEN...Tuesday through Sunday.

Hazardous weather is not expected at this time.

.SPOTTER INFORMATION STATEMENT...

Weather spotters are encouraged to report significant weather
conditions according to Standard Operating Procedures.

ANZ150>154-171945-
Coastal Waters from Stonington, ME to Port Clyde, ME out 25 NM-
Penobscot Bay-
Coastal Waters from Port Clyde, ME to Cape Elizabeth, ME out 25 NM-
Casco Bay-
Coastal Waters from Cape Elizabeth, ME to Merrimack River, MA out
25 NM-
340 PM EDT Mon May 16 2022

This Hazardous Weather Outlook is for Atlantic coastal waters.

.DAY ONE...This afternoon and tonight.

Scattered strong storms could move into the waters this evening and
produce wind gusts in excess of 34 knots.

.DAYS TWO THROUGH SEVEN...Tuesday through Sunday.

Hazardous weather is not expected at this time.

.SPOTTER INFORMATION STATEMENT...

Spotter activation is not expected at this time.

In the hours before

Special weather statement, May 16, 3:40 PM EDT, 2 hours 3 minutes before
Special Weather Statement
National Weather Service Gray ME
340 PM EDT Mon May 16 2022

NHZ003-005-007-008-162030-
Merrimack NH-Northern Grafton NH-Southern Grafton NH-Sullivan NH-
340 PM EDT Mon May 16 2022

...A cluster of strong thunderstorms will impact portions of
northern Sullivan, southwestern Grafton and northwestern Merrimack
Counties through 430 PM EDT...

At 340 PM EDT, Doppler radar was tracking a cluster of strong
thunderstorms near New London, moving north at 45 mph.

HAZARD...Wind gusts up to 40 mph and half inch hail.

SOURCE...Radar indicated.

IMPACT...Gusty winds could knock down tree limbs and blow around
         unsecured objects. Minor damage to outdoor objects is
         possible.

Locations impacted include...
Claremont, Lebanon, Franklin, New London, Grafton, Hanover,
Haverhill, Enfield, Canaan, Canterbury, Danbury, Groton, Newport,
Piermont, Warner, Boscawen, Bristol, Grantham, Andover and Lyme.

This includes the following highways...
 Interstate 89 between mile markers 22 and 60.
 Interstate 93 between mile markers 48 and 50.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

If outdoors, consider seeking shelter inside a building.

This storm may intensify, so be certain to monitor local radio
stations and available television stations for additional information
and possible warnings from the National Weather Service.

&&

LAT...LON 4360 7234 4370 7230 4377 7220 4381 7218
      4386 7219 4392 7212 4397 7209 4397 7211
      4399 7212 4406 7207 4408 7204 4410 7195
      4360 7172 4359 7173 4357 7172 4356 7173
      4350 7167 4333 7159 4326 7233 4358 7236
TIME...MOT...LOC 1940Z 162DEG 38KT 4344 7190

MAX HAIL SIZE...0.50 IN
MAX WIND GUST...40 MPH

HAT
Local storm report, May 16, 4:14 PM EDT, 1 hour 29 minutes before
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Local storm report, May 16, 4:16 PM EDT, 1 hour 27 minutes before
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The office that day

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

IssuedProductOfficeCountiesLasted
May 16, 3:35 AM EDTSmall Craft AdvisoryGYX53 hr
May 16, 5:52 AM EDTDense Fog AdvisoryGYXKnox, Lincoln, Sagadahoc, Waldo3 hr
May 16, 3:48 PM EDTCoastal Flood AdvisoryGYXCumberland, York9 hr
May 15, 9:01 PM EDTSpecial Weather StatementGYXRockingham29 min
May 16, 3:40 PM EDTSpecial Weather StatementGYXSullivan50 min
May 16, 3:45 PM EDTSevere Thunderstorm WarningGYXGrafton45 min
May 16, 6:36 PM EDTSevere Thunderstorm WarningGYXGrafton, Merrimack, Sullivan39 min
May 16, 6:45 PM EDTSevere Thunderstorm WarningGYXBelknap, Cheshire, Hillsborough, Merrimack, Sullivan45 min
May 16, 7:13 PM EDTSevere Thunderstorm WarningGYXBelknap, Carroll, Grafton, Merrimack47 min
May 16, 7:30 PM EDTSevere Thunderstorm WarningGYXBelknap, Carroll, Grafton, Merrimack, Rockingham, Strafford45 min

Nearby

Severe Thunderstorm Warnings in New Hampshire, 2022Every severe thunderstorm warning in 2022

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.