Alert archive / New Hampshire / Flash Flood Warnings in 2024
Flash Flood Warning 25, NWS Gray, ME
NWS Gray, ME issued this flash flood warning at Aug 4, 2024, 12:39 PM EDT for Hillsborough County, Rockingham 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
- Aug 4, 2024, 12:39 PM EDT (16:39 UTC)
- Expired
- Aug 4, 2024, 3:27 PM EDT
- In force
- 3 hr
- Issued by
- NWS Gray, ME
- Area
- Storm-based polygon
- Flood severity
- None
Counties Hillsborough County, NH, Rockingham County, NH
The radar
The Boston radar (KBOX), 113 km from the middle of the area, began a volume at 16:42 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 12:00Z, 4.7 hours before the alert went out and 200 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
- 707 J/kg
- Mixed-layer CIN
- -11 J/kg
- Mixed-layer LCL
- 623 m above ground
- 0-6 km bulk shear
- 31 kt
- 0-1 km storm-relative helicity
- 8 m²/s²
- 0-3 km storm-relative helicity
- 68 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.2
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 Aug 4, 9:35 AM EDT, 3 hours 4 minutes earlier.
Area forecast discussion, Aug 4, 9:35 AM EDT, 3 hours 4 minutes before
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Hazardous Weather Outlook National Weather Service Gray ME 419 AM EDT Sun Aug 4 2024 MEZ018-NHZ010-012-013-050830- Interior York-Strafford-Eastern Hillsborough-Interior Rockingham- 419 AM EDT Sun Aug 4 2024 This Hazardous Weather Outlook is for southwest Maine, central New Hampshire and southern New Hampshire. .DAY ONE...Today and tonight. A couple of storms could become strong to marginally severe with gusty to locally damaging wind gusts. In addition, moisture remains very high across the region, and localized flooding is possible with slow-moving showers and storms or for those who receive multiple rounds of showers and storms. .DAYS TWO THROUGH SEVEN...Monday through Saturday. Hot and humid conditions continue into Monday with heat index values in the low to mid 90s possible. A cold front will also bring the potential for strong to severe storms during the day on Monday with damaging winds and locally heavy rainfall as the primary hazards. .SPOTTER INFORMATION STATEMENT... Weather spotters are encouraged to report significant weather conditions according to Standard Operating Procedures. MEZ007>009-012>014-019>028-033-NHZ001>009-011-014-015-050830- Northern Oxford-Northern Franklin-Central Somerset-Southern Oxford- Southern Franklin-Southern Somerset-Central Interior Cumberland- Androscoggin-Kennebec-Interior Waldo-Coastal York-Coastal Cumberland- Sagadahoc-Lincoln-Knox-Coastal Waldo-Interior Cumberland Highlands- Northern Coos-Southern Coos-Northern Grafton-Northern Carroll- Southern Grafton-Southern Carroll-Sullivan-Merrimack-Belknap- Cheshire-Coastal Rockingham-Western And Central Hillsborough- 419 AM EDT Sun Aug 4 2024 This Hazardous Weather Outlook is for Maine, south central Maine, southwest Maine, west central Maine, western Maine, New Hampshire, central New Hampshire, northern New Hampshire and southern New Hampshire. .DAY ONE...Today and tonight. A couple of storms could become strong to marginally severe with gusty to locally damaging wind gusts. In addition, moisture remains very high across the region, and localized flooding is possible with slow-moving showers and storms or for those who receive multiple rounds of showers and storms. .DAYS TWO THROUGH SEVEN...Monday through Saturday. A cold front will also bring the potential for strong to severe storms during the day on Monday with damaging winds and locally heavy rainfall as the primary hazards. .SPOTTER INFORMATION STATEMENT... Weather spotters are encouraged to report significant weather conditions according to Standard Operating Procedures. ANZ150>154-050830- Coastal Waters from Stonington, ME to Port Clyde, ME out 25 NM- Penobscot Bay- Coastal Waters from Port Clyde, ME to Cape Elizabeth, ME out 25 NM- Casco Bay- Coastal Waters from Cape Elizabeth, ME to Merrimack River, MA out 25 NM- 419 AM EDT Sun Aug 4 2024 This Hazardous Weather Outlook is for Atlantic coastal waters. .DAY ONE...Today and tonight. A couple of storms could produce gusty winds this afternoon. .DAYS TWO THROUGH SEVEN...Monday through Saturday. Strong, offshore-moving thunderstorms are possible Monday afternoon and evening as a cold front crosses the region. .SPOTTER INFORMATION STATEMENT... Spotter activation is not expected at this time.
In the hours before
Local storm report, Aug 4, 8:36 AM EDT, 4 hours 3 minutes before
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</html>Local storm report, Aug 4, 10:10 AM EDT, 2 hours 29 minutes before
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</html>Local storm report, Aug 4, 11:33 AM EDT, 1 hour 6 minutes before
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</html>Local storm report, Aug 4, 11:39 AM EDT, 1 hour 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 |
|---|---|---|---|---|
| Aug 4, 7:55 AM EDT | Areal Flood Advisory | GYX | Cumberland, York | 2 hr |
| Aug 4, 7:59 AM EDT | Flash Flood Warning | GYX | Cumberland, York | 2 hr |
| Aug 4, 8:40 AM EDT | Areal Flood Advisory | GYX | Cumberland, Lincoln, Sagadahoc | 2 hr |
| Aug 4, 1:10 PM EDT | Special Weather Statement | GYX | Somerset | 35 min |
| Aug 4, 1:17 PM EDT | Severe Thunderstorm Warning | GYX | Franklin, Somerset | 43 min |
| Aug 4, 1:44 PM EDT | Severe Thunderstorm Warning | GYX | Franklin, Somerset | 22 min |
| Aug 4, 3:20 PM EDT | Special Weather Statement | GYX | Franklin | 40 min |
| Aug 4, 3:52 PM EDT | Areal Flood Advisory | GYX | Franklin, Somerset | 53 min |
| Aug 4, 3:57 PM EDT | Special Weather Statement | GYX | Oxford | 33 min |
| Aug 4, 5:02 PM EDT | Special Weather Statement | GYX | Kennebec | 43 min |
| Aug 4, 7:08 PM EDT | Areal Flood Advisory | GYX | Franklin | 2 hr |
| Aug 4, 7:32 PM EDT | Special Weather Statement | GYX | Somerset | 58 min |
| Aug 4, 8:16 AM EDT | Areal Flood Advisory | GYX | Belknap, Carroll, Merrimack, Strafford | 119 min |
| Aug 4, 12:44 PM EDT | Severe Thunderstorm Warning | GYX | Hillsborough, Rockingham | 20 min |
| Aug 4, 1:28 PM EDT | Areal Flood Advisory | GYX | Rockingham | 119 min |
| Aug 4, 1:33 PM EDT | Severe Thunderstorm Warning | GYX | Hillsborough, Rockingham | 42 min |
| Aug 4, 1:52 PM EDT | Flash Flood Warning | GYX | Rockingham | 95 min |
| Aug 4, 1:56 PM EDT | Severe Thunderstorm Warning | GYX | Coos | 36 min |
| Aug 4, 2:17 PM EDT | Severe Thunderstorm Warning | GYX | Coos | 43 min |
| Aug 4, 2:27 PM EDT | Areal Flood Advisory | GYX | Coos | 105 min |
| Aug 4, 4:15 PM EDT | Special Weather Statement | GYX | Grafton | 30 min |
| Aug 4, 4:48 PM EDT | Areal Flood Advisory | GYX | Grafton | 3 hr |
| Aug 4, 7:02 PM EDT | Special Weather Statement | GYX | Grafton | 58 min |
| Aug 4, 7:23 PM EDT | Severe Thunderstorm Warning | GYX | Grafton | 52 min |
| Aug 4, 7:57 PM EDT | Special Weather Statement | GYX | Grafton | 48 min |
Nearby
Flash Flood Warnings in New Hampshire, 2024Every flash flood warning in 2024
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.