Alert archive / New Hampshire / Flash Flood Warnings in 2023
Flash Flood Warning 35, NWS Gray, ME
NWS Gray, ME issued this flash flood warning at Jul 8, 2023, 7:45 PM EDT for Cheshire County, Hillsborough County, New Hampshire. It was in force for 107 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
- Jul 8, 2023, 7:45 PM EDT (23:45 UTC)
- Expired
- Jul 8, 2023, 9:32 PM EDT
- In force
- 107 min
- Issued by
- NWS Gray, ME
- Area
- Storm-based polygon
- Flood severity
- None
Counties Cheshire County, NH, Hillsborough County, NH
The radar
The Boston radar (KBOX), 127 km from the middle of the area, began a volume at 23:47 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, 11.8 hours before the alert went out and 239 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
- 387 J/kg
- Mixed-layer CIN
- -55 J/kg
- Mixed-layer LCL
- 626 m above ground
- 0-6 km bulk shear
- 11 kt
- 0-1 km storm-relative helicity
- -28 m²/s²
- 0-3 km storm-relative helicity
- 2 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
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 Jul 8, 6:21 PM EDT, 1 hour 24 minutes earlier.
Area forecast discussion, Jul 8, 6:21 PM EDT, 1 hour 24 minutes before
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</html>Hazardous weather outlook, Jul 8, 3:54 PM EDT, 3 hours 51 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 |
|---|---|---|---|---|
| Jul 8, 1:05 PM EDT | Areal Flood Advisory | GYX | Franklin, Somerset | 49 min |
| Jul 8, 1:54 PM EDT | Flash Flood Warning | GYX | Franklin, Somerset | 4 hr |
| Jul 8, 3:09 PM EDT | Flood Watch | GYX | Cumberland, Franklin, Oxford | 64 hr |
| Jul 8, 6:03 PM EDT | Flash Flood Warning | GYX | Franklin, Somerset | 3 hr |
| Jul 8, 3:23 PM EDT | Areal Flood Advisory | GYX | Coos, Grafton | 4 hr |
| Jul 8, 5:32 PM EDT | Areal Flood Advisory | GYX | Belknap, Carroll, Grafton | 5 hr |
| Jul 8, 5:49 PM EDT | Areal Flood Advisory | GYX | Coos | 92 min |
| Jul 8, 6:21 PM EDT | Areal Flood Advisory | GYX | Cheshire, Merrimack, Sullivan | 114 min |
| Jul 8, 6:48 PM EDT | Areal Flood Advisory | GYX | Carroll, Coos, Grafton | 3 hr |
| Jul 8, 7:20 PM EDT | Areal Flood Advisory | GYX | Grafton, Merrimack, Sullivan | 103 min |
Nearby
Flash Flood Warnings in New Hampshire, 2023Every 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.