Alert archive / New Hampshire / Special Weather Statements in 2021

Special Weather Statement, NWS Gray, ME

September 8, 2021Grafton County, New Hampshire

NWS Gray, ME issued this special weather statement at Sep 8, 2021, 9:40 PM EDT for Grafton County, New Hampshire. It was in force for 35 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: Sep 8, 2021, 9:40 PM EDT (01:40 UTC)
Expired: Sep 8, 2021, 10:15 PM EDT
In force: 35 min
Issued by: NWS Gray, ME
Hail: 0.00 in
Wind: 40

County Grafton County, NH

The radar

The Burlington radar (KCXX), 112 km from the middle of the area, began a volume at 01:41 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 00:00Z, 1.7 hours before the alert went out and 131 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: 34 J/kg
Mixed-layer CIN: -57 J/kg
Mixed-layer LCL: 1159 m above ground
0-6 km bulk shear: 48 kt
0-1 km storm-relative helicity: 224 m²/s²
0-3 km storm-relative helicity: 258 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

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 Sep 8, 6:32 PM EDT, 3 hours 8 minutes earlier.

Area forecast discussion, Sep 8, 6:32 PM EDT, 3 hours 8 minutes before

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Hazardous weather outlook, Sep 8, 2:32 PM EDT, 7 hours 8 minutes before

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In the hours before

Special weather statement, Sep 8, 8:40 PM EDT, 1 hour before

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Special weather statement, Sep 8, 9:05 PM EDT, 35 minutes before

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Special weather statement, Sep 8, 9:40 PM EDT, 0 minutes before

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The office that day

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

Issued	Product	Office	Counties	Lasted
Sep 9, 12:29 PM EDT	Flash Flood Watch	GYX	Kennebec, Knox, Lincoln, Sagadahoc, Somerset, Waldo	15 hr
Sep 9, 4:02 PM EDT	Coastal Flood Statement	GYX	Cumberland, Knox, Lincoln, Sagadahoc, Waldo, York	11 hr
Sep 8, 8:40 PM EDT	Special Weather Statement	GYX	Sullivan	50 min
Sep 8, 9:05 PM EDT	Special Weather Statement	GYX	Cheshire, Sullivan	40 min
Sep 9, 4:12 AM EDT	Special Weather Statement	GYX	Strafford	48 min

Nearby

Special Weather Statements in New Hampshire, 2021 Every 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.