Alert archive / New Hampshire / Flash Flood Warnings in 2023

Flash Flood Warning 16, NWS Gray, ME

June 26, 2023Cheshire County, New Hampshire

NWS Gray, ME issued this flash flood warning at Jun 26, 2023, 10:17 PM EDT for Cheshire County, New Hampshire. It was in force for 3 hr. No storm report in the archive falls inside the area while it was in force.

The area

The counties it named.

The facts

Issued: Jun 26, 2023, 10:17 PM EDT (02:17 UTC)
Expired: Jun 27, 2023, 1:15 AM EDT
In force: 3 hr
Issued by: NWS Gray, ME
Area: Storm-based polygon
Flood severity: None

County Cheshire County, NH

The radar

The Boston radar (KBOX), 141 km from the middle of the area, began a volume at 02:20 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, 2.3 hours before the alert went out and 194 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: 21 J/kg
Mixed-layer CIN: -96 J/kg
Mixed-layer LCL: 453 m above ground
0-6 km bulk shear: 19 kt
0-1 km storm-relative helicity: 105 m²/s²
0-3 km storm-relative helicity: 119 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 flash flood 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 flash flood warning went out at Jun 26, 7:54 PM EDT, 2 hours 23 minutes earlier.

Area forecast discussion, Jun 26, 7:54 PM EDT, 2 hours 23 minutes before

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Hazardous weather outlook, Jun 26, 6:46 PM EDT, 3 hours 31 minutes before

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In the hours before

Local storm report, Jun 26, 5:28 PM EDT, 4 hours 49 minutes before

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Special weather statement, Jun 26, 5:48 PM EDT, 4 hours 29 minutes before

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Special weather statement, Jun 26, 6:05 PM EDT, 4 hours 12 minutes before

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Local storm report, Jun 26, 6:13 PM EDT, 4 hours 4 minutes before

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Special weather statement, Jun 26, 6:52 PM EDT, 3 hours 25 minutes before

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Special weather statement, Jun 26, 7:45 PM EDT, 2 hours 32 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
Jun 26, 9:42 PM EDT	Dense Fog Advisory	GYX	Cumberland, Knox, Lincoln, Sagadahoc, Waldo, York	10 hr
Jun 27, 3:21 AM EDT	Small Craft Advisory	GYX		63 hr
Jun 27, 6:35 PM EDT	Dense Fog Advisory	GYX	Knox, Lincoln, Waldo	14 hr
Jun 26, 8:31 PM EDT	Areal Flood Advisory	GYX	Cheshire	119 min
Jun 26, 8:46 PM EDT	Flash Flood Warning	GYX	Cheshire	4 hr
Jun 26, 8:57 PM EDT	Special Weather Statement	GYX	Cheshire	33 min
Jun 26, 9:32 PM EDT	Areal Flood Advisory	GYX	Cheshire, Sullivan	3 hr
Jun 27, 1:09 AM EDT	Areal Flood Advisory	GYX	Cheshire	3 hr
Jun 27, 1:20 AM EDT	Areal Flood Advisory	GYX	Cheshire	3 hr
Jun 27, 4:35 PM EDT	Areal Flood Advisory	GYX	Grafton	4 hr
Jun 27, 6:22 PM EDT	Areal Flood Advisory	GYX	Grafton	4 hr

Nearby

Flash Flood Warnings in New Hampshire, 2023 Every flash flood warning in 2023

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.