Alert archive / New Hampshire / Flash Flood Warnings in 2017
Flash Flood Warning 13, NWS Gray, ME
NWS Gray, ME issued this flash flood warning at Jul 1, 2017, 9:34 PM EDT for Carroll County, Coos County, Grafton 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 outline as issued.
The facts
- Issued
- Jul 1, 2017, 9:34 PM EDT (01:34 UTC)
- Expired
- Jul 2, 2017, 12:30 AM EDT
- In force
- 3 hr
- Issued by
- NWS Gray, ME
- Area
- Storm-based polygon
- Flood severity
- None
Counties Carroll County, NH, Coos County, NH, Grafton County, NH
The radar
The Portland,ME radar (KGYX), 99 km from the middle of the area, began a volume at 01:35 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
Albany, NY (KALY), launched 00:00Z, 1.6 hours before the alert went out and 247 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
- 844 J/kg
- Mixed-layer CIN
- -13 J/kg
- Mixed-layer LCL
- 760 m above ground
- 0-6 km bulk shear
- 36 kt
- 0-1 km storm-relative helicity
- 111 m²/s²
- 0-3 km storm-relative helicity
- 121 m²/s²
- Significant tornado parameter
- 0.4
- Supercell composite
- 2.5
The text
As transmitted.
324 WGUS51 KGYX 020134 FFWGYX NHC003-007-009-020430- /O.NEW.KGYX.FF.W.0013.170702T0134Z-170702T0430Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ BULLETIN - EAS ACTIVATION REQUESTED Flash Flood Warning National Weather Service Gray ME 934 PM EDT SAT JUL 1 2017 The National Weather Service in Gray Maine has issued a * Flash Flood Warning for... Southeastern Coos County in northern New Hampshire... Eastern Grafton County in northern New Hampshire... Northern Carroll County in northern New Hampshire... * Until 1230 AM EDT * At 933 PM EDT, Doppler radar indicated another round of thunderstorms producing heavy rain across the warned area. Up to three inches of rain have already fallen. Additional Flash flooding is expected to begin shortly. * Some locations that will experience flooding include... Conway, Bethlehem, Lincoln, Plymouth, Holderness, Ashland, Franconia, Woodstock, Pinkham Notch, Mount Washington, Sandwich, Carroll, Gorham, Bartlett, Jackson, Albany, Hebron, Chatham, Easton and Ellsworth. This includes Interstate 93 between mile markers 79 and 111. This also includes... Crawford Notch State Park, Franconia Notch, Cannon Mountain, North Twin Mountain, and Franconia Ridge. PRECAUTIONARY/PREPAREDNESS ACTIONS... Move to higher ground now. Act quickly to protect your life. Campers should be particularly aware of where they are relative to rivers and streams. Rivers may rise rapidly. && LAT...LON 4416 7176 4441 7102 4408 7100 4369 7177 $$ MBC
The office that day
Everything else NWS Gray, ME issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 1, 8:01 PM EDT | Special Weather Statement | GYX | Cheshire | 59 min |
| Jul 1, 9:45 PM EDT | River Flood Warning | GYX | Grafton | 24 hr |
| Jul 1, 11:58 PM EDT | River Flood Warning | GYX | Grafton | 9 hr |
| Jul 2, 1:20 AM EDT | River Flood Warning | GYX | Carroll | 16 hr |
| Jul 2, 3:24 PM EDT | Beach Hazards Statement | GYX | Rockingham | 30 hr |
Nearby
Flash Flood Warnings in New Hampshire, 2017Every flash flood warning in 2017
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.