Alert archive / New Hampshire / Special Weather Statements in 2021
Special Weather Statement, NWS Gray, ME
NWS Gray, ME issued this special weather statement at Jan 20, 2021, 5:23 PM EST for Belknap County, Merrimack County, Strafford County, New Hampshire. It was in force for 67 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
- Jan 20, 2021, 5:23 PM EST (22:23 UTC)
- Expired
- Jan 20, 2021, 6:30 PM EST
- In force
- 67 min
- Issued by
- NWS Gray, ME
Counties Belknap County, NH, Merrimack County, NH, Strafford County, NH
The radar
The Portland,ME radar (KGYX), 109 km from the middle of the area, began a volume at 22:23 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, 10.4 hours before the alert went out and 109 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
- 827 m above ground
- 0-6 km bulk shear
- 51 kt
- 0-1 km storm-relative helicity
- 18 m²/s²
- 0-3 km storm-relative helicity
- 80 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
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</html>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 Jan 20, 5:01 PM EST, 22 minutes earlier.
Area forecast discussion, Jan 20, 5:01 PM EST, 22 minutes before
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</html>Hazardous weather outlook, Jan 20, 3:09 PM EST, 2 hours 14 minutes before
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</html>In the hours before
Special weather statement, Jan 20, 12:05 PM EST, 5 hours 18 minutes before
Special Weather Statement
National Weather Service Gray ME
1205 PM EST Wed Jan 20 2021
NHZ002-003-201745-
Northern Grafton-Southern Coos-
1205 PM EST Wed Jan 20 2021
...An area of heavy snow will affect southwestern Coos and
northeastern Grafton Counties...
At 1203 PM EST...An area of heavy snow was over Gilman, or 7 miles
southwest of Lancaster...moving east AT 10 MPH.
Locations impacted include...
Berlin, Littleton, Lancaster, Bethlehem, Franconia, Carroll, Gorham,
Jefferson, Dalton, Whitefield, Northumberland, Randolph and Stark.
This includes Interstate 93 between mile markers 121 and 128, and
near mile marker 130.
This also includes...
North Twin Mountain, AMC Zealand Falls Hut, and Mount Cabot.
* Visibilities could drop quickly to less than a mile in this area
of heavy snow.
* Snowfall rates of 1 to 2 inches per hour are possible in this
area of heavy snow.
Conditions can deteriorate rapidly in winter weather situations. Be
prepared for snow or ice covered roads. Slow down and allow extra
time when traveling.
LAT...LON 4436 7181 4438 7182 4440 7179 4441 7171
4444 7166 4449 7163 4448 7163 4450 7158
4452 7159 4453 7158 4456 7160 4457 7159
4457 7156 4445 7123 4417 7149 4433 7188
TIME...MOT...LOC 1703Z 291DEG 10KT 4441 7168
WatsonLocal storm report, Jan 20, 2:18 PM EST, 3 hours 5 minutes before
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</html>Special weather statement, Jan 20, 5:23 PM EST, 0 minutes before
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</html>The office that day
Everything else NWS Gray, ME issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jan 20, 11:10 AM EST | Special Weather Statement | GYX | Grafton | 50 min |
| Jan 20, 12:05 PM EST | Special Weather Statement | GYX | Coos | 40 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.