Alert archive / New Hampshire / Flash Flood Warnings in 2018
Flash Flood Warning 13, NWS Gray, ME
NWS Gray, ME issued this flash flood warning at Aug 8, 2018, 8:43 PM EDT for Coos County, New Hampshire; Oxford County, Maine. It was in force for 81 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
- Aug 8, 2018, 8:43 PM EDT (00:43 UTC)
- Expired
- Aug 8, 2018, 10:04 PM EDT
- In force
- 81 min
- Issued by
- NWS Gray, ME
- Area
- Storm-based polygon
- Flood severity
- None
Counties Oxford County, ME, Coos County, NH
The radar
The Portland,ME radar (KGYX), 71 km from the middle of the area, began a volume at 00:44 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, 0.7 hours before the alert went out and 71 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
- 6 J/kg
- Mixed-layer CIN
- -133 J/kg
- Mixed-layer LCL
- 1130 m above ground
- 0-6 km bulk shear
- 26 kt
- 0-1 km storm-relative helicity
- 19 m²/s²
- 0-3 km storm-relative helicity
- 70 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
856 WGUS51 KGYX 090043 FFWGYX MEC017-NHC007-090345- /O.NEW.KGYX.FF.W.0013.180809T0043Z-180809T0345Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ BULLETIN - EAS ACTIVATION REQUESTED Flash Flood Warning National Weather Service Gray ME 843 PM EDT WED AUG 8 2018 The National Weather Service in Gray Maine has issued a * Flash Flood Warning for... West central Oxford County in western Maine... Southeastern Coos County in northern New Hampshire... * Until 1145 PM EDT. * At 842 PM EDT, Doppler radar indicated thunderstorms producing heavy rain across the warned area. Between two and three inches of rain have already fallen. Flash flooding is expected to begin shortly. * Some locations that will experience flooding include... Bethel, Greenwood, Mason, Batchelders Grant, Albany, Stoneham, Woodstock and Stowe. Additional rainfall amounts of an inch is possible in the warned area. This also includes... Speckled Mountain, Evans Notch, Caribou Mountain, East Royce Mountain, and Albany Mountain. PRECAUTIONARY/PREPAREDNESS ACTIONS... Be especially cautious at night when it is harder to recognize the dangers of flooding. Flooding is occurring or is imminent. It is important to know where you are relative to streams, rivers, or creeks which can become killers in heavy rains. Campers and hikers should avoid streams or creeks. && LAT...LON 4433 7101 4446 7073 4437 7065 4422 7101 $$ Hanes
2 follow-up statements
633 WGUS71 KGYX 090126 FFSGYX Flash Flood Statement National Weather Service Gray ME 926 PM EDT WED AUG 8 2018 MEC017-NHC007-090345- /O.CON.KGYX.FF.W.0013.000000T0000Z-180809T0345Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ Oxford ME-Coos NH- 926 PM EDT WED AUG 8 2018 ...THE FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 1145 PM EDT FOR WEST CENTRAL OXFORD AND SOUTHEASTERN COOS COUNTIES... At 923 PM EDT, Doppler radar indicated thunderstorms producing heavy rain across the warned area. Up to three inches of rain have already fallen in the warned area, and flash flooding may be occurring. Some locations that will experience flooding include... Bethel, Greenwood, Mason, Batchelders Grant, Albany, Stoneham, Woodstock and Stowe. Additional rainfall amounts of a quarter to an inch are possible in the warned area. PRECAUTIONARY/PREPAREDNESS ACTIONS... Be especially cautious at night when it is harder to recognize the dangers of flooding. Flooding is occurring or is imminent. It is important to know where you are relative to streams, rivers, or creeks which can become killers in heavy rains. Campers and hikers should avoid streams or creeks. && LAT...LON 4433 7101 4446 7073 4437 7065 4422 7101 $$ Hanes
705 WGUS71 KGYX 090204 RRA FFSGYX Flash Flood Statement National Weather Service Gray ME 1004 PM EDT WED AUG 8 2018 MEC017-NHC007-090214- /O.CAN.KGYX.FF.W.0013.000000T0000Z-180809T0345Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ Oxford ME-Coos NH- 1004 PM EDT WED AUG 8 2018 ...THE FLASH FLOOD WARNING FOR WEST CENTRAL OXFORD AND SOUTHEASTERN COOS COUNTIES IS CANCELLED... The heavy rain has ended. Flooding is no longer expected to pose a threat. Please continue to heed any remaining road closures. LAT...LON 4433 7101 4446 7073 4437 7065 4422 7101 $$ Hanes
The office that day
Everything else NWS Gray, ME issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 8, 8:06 PM EDT | Areal Flood Advisory | GYX | Coos | 114 min |
| Aug 8, 8:29 PM EDT | Flash Flood Warning | GYX | Belknap, Hillsborough, Merrimack, Rockingham, Strafford | 95 min |
| Aug 9, 11:26 AM EDT | Special Weather Statement | GYX | Kennebec | 34 min |
| Aug 9, 11:57 AM EDT | Special Weather Statement | GYX | Kennebec | 63 min |
| Aug 9, 12:03 PM EDT | Severe Thunderstorm Warning | GYX | Somerset | 27 min |
| Aug 9, 12:25 PM EDT | Special Weather Statement | GYX | Kennebec, Waldo | 65 min |
| Aug 9, 1:36 PM EDT | Special Weather Statement | GYX | Knox, Waldo | 54 min |
| Aug 9, 5:07 PM EDT | Special Weather Statement | GYX | Waldo | 38 min |
| Aug 9, 5:17 PM EDT | Severe Thunderstorm Warning | GYX | Kennebec, Somerset, Waldo | 43 min |
Nearby
Flash Flood Warnings in New Hampshire, 2018Flash Flood Warnings in Maine, 2018Every flash flood warning in 2018
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.