Alert archive / New Hampshire / Special Weather Statements in 2021

Special Weather Statement, NWS Gray, ME

June 30, 2021Rockingham County, New Hampshire

NWS Gray, ME issued this special weather statement at Jun 30, 2021, 4:53 PM EDT for Rockingham County, New Hampshire. It was in force for 37 min. No storm report in the archive falls inside the area while it was in force.

The area

The outline as issued.

The facts

Issued
Jun 30, 2021, 4:53 PM EDT (20:53 UTC)
Expired
Jun 30, 2021, 5:30 PM EDT
In force
37 min
Issued by
NWS Gray, ME

County Rockingham County, NH

The radar

The Boston radar (KBOX), 109 km from the middle of the area, began a volume at 20:53 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 12:00Z, 8.9 hours before the alert went out and 120 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 12:00Z on 2021-06-30Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 906 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 12:00Z on 2021-06-30The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 95 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
906 J/kg
Mixed-layer CIN
-60 J/kg
Mixed-layer LCL
1312 m above ground
0-6 km bulk shear
33 kt
0-1 km storm-relative helicity
95 m²/s²
0-3 km storm-relative helicity
102 m²/s²
Significant tornado parameter
0.2
Supercell composite
1.3

Open this sounding in Storm Lab

The text

As transmitted.

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What forecasters said that day

The local office's own words before this special weather statement 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 special weather statement went out at Jun 30, 4:40 PM EDT, 13 minutes earlier.

Area forecast discussion, Jun 30, 4:40 PM EDT, 13 minutes before
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Hazardous weather outlook, Jun 30, 4:15 PM EDT, 38 minutes before
Hazardous Weather Outlook
National Weather Service Gray ME
415 PM EDT Wed Jun 30 2021

MEZ018>021-023>025-033-NHZ006-008>015-012015-
Interior York-Central Interior Cumberland-Androscoggin-Kennebec-
Coastal York-Coastal Cumberland-Sagadahoc-
Interior Cumberland Highlands-Southern Carroll-Merrimack-Belknap-
Strafford-Cheshire-Eastern Hillsborough-Interior Rockingham-
Coastal Rockingham-Western And Central Hillsborough-
415 PM EDT Wed Jun 30 2021

...HEAT ADVISORY IN EFFECT UNTIL 8 PM EDT THIS EVENING...
...SEVERE THUNDERSTORM WATCH 327 IN EFFECT UNTIL 7 PM EDT THIS
EVENING...

This Hazardous Weather Outlook is for Maine, south central Maine,
southwest Maine, western Maine, New Hampshire, central New
Hampshire, northern New Hampshire and southern New Hampshire.

.DAY ONE...Tonight.

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

   Heat Advisory.
   Severe Thunderstorm Watch.

.DAYS TWO THROUGH SEVEN...Thursday through Tuesday.

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>014-022-026>028-NHZ003>005-007-012015-
Northern Oxford-Northern Franklin-Central Somerset-Southern Oxford-
Southern Franklin-Southern Somerset-Interior Waldo-Lincoln-Knox-
Coastal Waldo-Northern Grafton-Northern Carroll-Southern Grafton-
Sullivan-
415 PM EDT Wed Jun 30 2021

...SEVERE THUNDERSTORM WATCH 327 IN EFFECT UNTIL 7 PM EDT THIS
EVENING...

This Hazardous Weather Outlook is for south central Maine, west
central Maine, western Maine, central New Hampshire and northern
New Hampshire.

.DAY ONE...Tonight.

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

   Severe Thunderstorm Watch.

.DAYS TWO THROUGH SEVEN...Thursday through Tuesday.

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.

NHZ001-002-012015-
Northern Coos-Southern Coos-
415 PM EDT Wed Jun 30 2021

This Hazardous Weather Outlook is for northern New Hampshire.

.DAY ONE...Tonight.

Although the strongest storms have passed, a few more heavy showers
and possibly a couple storms may impact the area tonight with gusty
winds.

.DAYS TWO THROUGH SEVEN...Thursday through Tuesday.

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.

ANZ150-152-154-012015-
Coastal Waters from Stonington, ME to Port Clyde, ME out 25 NM-
Coastal Waters from Port Clyde, ME to Cape Elizabeth, ME out 25 NM-
Coastal Waters from Cape Elizabeth, ME to Merrimack River, MA out
25 NM-
415 PM EDT Wed Jun 30 2021

This Hazardous Weather Outlook is for Atlantic coastal waters.

.DAY ONE...Tonight.

Strong thunderstorms are possible through this evening. Wind gusts
my exceed gale force with locally rough seas.

Hazardous weather is not expected at this time.

.DAYS TWO THROUGH SEVEN...Thursday through Tuesday.

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.

ANZ151-153-012015-
Penobscot Bay-Casco Bay-
415 PM EDT Wed Jun 30 2021

...SEVERE THUNDERSTORM WATCH 327 IN EFFECT UNTIL 7 PM EDT THIS
EVENING...

This Hazardous Weather Outlook is for Atlantic coastal waters.

.DAY ONE...Tonight.

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

 Severe Thunderstorm Watch.

.DAYS TWO THROUGH SEVEN...Thursday through Tuesday.

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.

In the hours before

Special weather statement, Jun 30, 4:07 PM EDT, 46 minutes before
Special Weather Statement
National Weather Service Gray ME
407 PM EDT Wed Jun 30 2021

MEZ021-022-027-028-302030-
Interior Waldo-Kennebec-Coastal Waldo-Knox-
407 PM EDT Wed Jun 30 2021

...A LINE OF STRONG THUNDERSTORMS WILL AFFECT NORTHEASTERN
KENNEBEC...NORTHERN KNOX AND CENTRAL WALDO COUNTIES...

At 407 PM EDT, radar indicated strong thunderstorms were located
along a line extending from near China to near Liberty. Movement was
east at 30 mph.

Winds in excess of 40 mph are possible with these storms.

Locations impacted include...
Belfast, Lincolnville, Thorndike, China, Liberty, Islesboro, Palermo,
Unity, Knox, Albion, Hope, Appleton, Brooks, Freedom, Jackson,
Morrill, Northport, Belmont, Searsmont and Montville.

If outdoors, consider seeking shelter inside a building.

These storms 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 4464 6918 4434 6886 4428 6926 4449 6952
TIME...MOT...LOC 2007Z 261DEG 28KT 4449 6944 4435 6926

Watson
Local storm report, Jun 30, 4:21 PM EDT, 32 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE GRAY ME
421 PM EDT WED JUN 30 2021

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

0405 PM     HAIL             2 E TILTON              43.44N 71.56W
06/30/2021  E1.25 INCH       MERRIMACK          NH   PUBLIC

            HAIL UP TO HALF DOLLAR SIZE ALONG WITH WINDS
            UP TO AROUND 50 MPH. TIME ESTIMATED BY
            RADAR.

&&

TUBBS
Local storm report, Jun 30, 4:25 PM EDT, 28 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE GRAY ME
425 PM EDT WED JUN 30 2021

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

0410 PM     HAIL             1 NNE WINCHESTER        42.80N 72.37W
06/30/2021  E1.50 INCH       CHESHIRE           NH   PUBLIC

            HAIL UP TO PING PONG BALL SIZE AT CAMP
            FOREST LAKE. LASTED FOR ABOUT 5 MINUTES.
            TIME ESTIMATED BY RADAR.

&&

TUBBS
Special weather statement, Jun 30, 4:34 PM EDT, 19 minutes before
Special Weather Statement
National Weather Service Gray ME
434 PM EDT Wed Jun 30 2021

MEZ021-022-026>028-302100-
Interior Waldo-Kennebec-Coastal Waldo-Lincoln-Knox-
434 PM EDT Wed Jun 30 2021

...A STRONG THUNDERSTORM WILL AFFECT EAST CENTRAL KENNEBEC...
NORTHWESTERN KNOX...SOUTHWESTERN WALDO AND NORTHERN LINCOLN
COUNTIES...

At 434 PM EDT, a strong thunderstorm was located near Palermo, or 13
miles east of Augusta, moving east at 40 mph.

Winds in excess of 30 mph and pea size hail are possible with this
storm.

Locations impacted include...
Lincolnville, China, Liberty, Palermo, Knox, Albion, Hope, Appleton,
Freedom, Windsor, Searsmont, Montville, Hibberts Gore, Somerville,
Morrill, Washington, Belmont, Vassalboro and Union.

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 4428 6960 4442 6962 4453 6918 4428 6912
TIME...MOT...LOC 2034Z 262DEG 34KT 4436 6951

Watson
Special weather statement, Jun 30, 4:44 PM EDT, 9 minutes before
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Special weather statement, Jun 30, 4:53 PM EDT, 0 minutes before
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The office that day

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

IssuedProductOfficeCountiesLasted
Jun 30, 2:03 PM EDTSpecial Weather StatementGYXWaldo27 min
Jun 30, 2:22 PM EDTSevere Thunderstorm WarningGYXKennebec, Somerset, Waldo53 min
Jun 30, 2:46 PM EDTSpecial Weather StatementGYXCumberland29 min
Jun 30, 3:01 PM EDTSpecial Weather StatementGYXKennebec29 min
Jun 30, 3:25 PM EDTSpecial Weather StatementGYXKennebec35 min
Jun 30, 3:40 PM EDTSpecial Weather StatementGYXYork35 min
Jun 30, 3:57 PM EDTSpecial Marine WarningGYX63 min
Jun 30, 3:57 PM EDTSpecial Weather StatementGYXCumberland33 min
Jun 30, 4:07 PM EDTSpecial Weather StatementGYXWaldo23 min
Jun 30, 4:34 PM EDTSpecial Weather StatementGYXWaldo26 min
Jun 30, 4:38 PM EDTSevere Thunderstorm WarningGYXYork52 min
Jun 30, 4:57 PM EDTAreal Flood AdvisoryGYXWaldo72 min
Jun 30, 5:00 PM EDTSpecial Marine WarningGYX60 min
Jun 30, 5:56 PM EDTSpecial Marine WarningGYX77 min
Jun 30, 7:34 PM EDTSpecial Weather StatementGYXFranklin26 min
Jun 30, 7:59 PM EDTSpecial Weather StatementGYXKennebec31 min
Jun 30, 2:39 PM EDTSpecial Weather StatementGYXGrafton36 min
Jun 30, 3:02 PM EDTSevere Thunderstorm WarningGYXGrafton, Sullivan43 min
Jun 30, 3:10 PM EDTSevere Thunderstorm WarningGYXCarroll, Coos, Grafton17 min
Jun 30, 3:42 PM EDTSpecial Weather StatementGYXBelknap48 min
Jun 30, 3:43 PM EDTSpecial Weather StatementGYXCheshire47 min
Jun 30, 4:01 PM EDTSevere Thunderstorm WarningGYXBelknap, Carroll, Grafton, Merrimack, Strafford27 min
Jun 30, 4:05 PM EDTSevere Thunderstorm WarningGYXCheshire, Sullivan35 min
Jun 30, 4:11 PM EDTSevere Thunderstorm WarningGYXBelknap, Carroll, Merrimack, Strafford49 min
Jun 30, 4:25 PM EDTSevere Thunderstorm WarningGYXCheshire, Hillsborough50 min
Jun 30, 4:44 PM EDTSpecial Weather StatementGYXMerrimack46 min
Jun 30, 4:58 PM EDTSevere Thunderstorm WarningGYXRockingham32 min
Jun 30, 5:12 PM EDTSevere Thunderstorm WarningGYXHillsborough, Rockingham33 min

Nearby

Special Weather Statements in New Hampshire, 2021Every special weather statement 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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.