Alert archive / New Hampshire / Snow Squall Warnings in 2022

Snow Squall Warning 2, NWS Gray, ME

February 19, 2022Hillsborough County, Merrimack County, Rockingham County, New Hampshire

NWS Gray, ME issued this snow squall warning at Feb 19, 2022, 4:29 PM EST for Hillsborough County, Merrimack County, Rockingham County, New Hampshire. It was in force for 61 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: Feb 19, 2022, 4:29 PM EST (21:29 UTC)
Expired: Feb 19, 2022, 5:30 PM EST
In force: 61 min
Issued by: NWS Gray, ME
Area: Storm-based polygon

Counties Hillsborough County, NH, Merrimack County, NH, Rockingham County, NH

The radar

The Boston radar (KBOX), 127 km from the middle of the area, began a volume at 21:32 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

Brookhaven, NY (KOKX), launched 12:00Z, 9.5 hours before the alert went out and 270 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: 0 J/kg
Mixed-layer CIN: No buoyant parcel
Mixed-layer LCL: 1350 m above ground
0-6 km bulk shear: 76 kt
0-1 km storm-relative helicity: 196 m²/s²
0-3 km storm-relative helicity: 182 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 snow squall 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 snow squall warning went out at Feb 18, 6:37 PM EST, 21 hours 52 minutes earlier.

Area forecast discussion, Feb 18, 6:37 PM EST, 21 hours 52 minutes before

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Hazardous weather outlook, Feb 18, 6:48 PM EST, 21 hours 41 minutes before

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        The site you requested is temporarily down for maintenance or an unexpected outage.
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The office that day

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

Issued	Product	Office	Counties	Lasted
Feb 19, 3:17 AM EST	Gale Warning	GYX		28 hr
Feb 19, 3:17 AM EST	Small Craft Advisory	GYX		19 hr
Feb 19, 4:43 PM EST	Snow Squall Warning	GYX	Oxford, York	47 min
Feb 19, 5:15 PM EST	Snow Squall Warning	GYX	Cumberland, Oxford, York	60 min
Feb 19, 3:10 PM EST	Special Weather Statement	GYX	Cheshire	35 min
Feb 19, 3:52 PM EST	Snow Squall Warning	GYX	Cheshire, Hillsborough, Merrimack	38 min

Nearby

Snow Squall Warnings in New Hampshire, 2022 Every snow squall 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.