Alert archive / New Hampshire / Severe Thunderstorm Warnings in 2019
Severe Thunderstorm Warning 47, NWS Gray, ME
NWS Gray, ME issued this severe thunderstorm warning at Aug 19, 2019, 2:36 PM EDT for Belknap County, Merrimack County, New Hampshire. It was in force for 39 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
- Aug 19, 2019, 2:36 PM EDT (18:36 UTC)
- Expired
- Aug 19, 2019, 3:15 PM EDT
- In force
- 39 min
- Issued by
- NWS Gray, ME
- Area
- Storm-based polygon
- Hail
- 0.75 in
- Wind
- 60.0 mph
Counties Belknap County, NH, Merrimack County, NH
The radar
The Portland,ME radar (KGYX), 117 km from the middle of the area, began a volume at 18:38 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 watch it was issued in
The SPC watch in force over the same counties when this warning went out.
| Issued | Product | Office | Lasted |
|---|---|---|---|
| Aug 19, 2:20 PM EDT | Severe Thunderstorm Watch | SPC | 5 hr |
The nearest sounding before it
Albany, NY (KALY), launched 12:00Z, 6.6 hours before the alert went out and 202 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
- 84 J/kg
- Mixed-layer CIN
- -234 J/kg
- Mixed-layer LCL
- 1049 m above ground
- 0-6 km bulk shear
- 34 kt
- 0-1 km storm-relative helicity
- 133 m²/s²
- 0-3 km storm-relative helicity
- 92 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
What forecasters said that day
The local office's own words before this severe thunderstorm 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 severe thunderstorm warning went out at Aug 19, 1:08 PM EDT, 1 hour 28 minutes earlier.
Area forecast discussion, Aug 19, 1:08 PM EDT, 1 hour 28 minutes before
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</html>Hazardous weather outlook, Aug 19, 4:01 AM EDT, 10 hours 35 minutes before
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</html>In the hours before
Special weather statement, Aug 19, 2:31 PM EDT, 5 minutes before
Special Weather Statement National Weather Service Gray ME 231 PM EDT Mon Aug 19 2019 NHZ008-009-191900- Merrimack-Belknap- 231 PM EDT Mon Aug 19 2019 ...A STRONG THUNDERSTORM WILL AFFECT SOUTHWESTERN BELKNAP AND CENTRAL MERRIMACK COUNTIES... At 231 PM EDT, a strong thunderstorm was located near Canterbury, or near Franklin, moving east at 15 mph. Winds in excess of 40 mph and penny size hail are possible with this storm. Locations impacted include... Concord, Laconia, Franklin, Loudon, Barnstead, Gilmanton, Canterbury, Belmont, Gilford, Boscawen, Andover, Tilton, Sanbornton, Webster, Salisbury, Northfield and Pittsfield. This includes Interstate 93 between mile markers 44 and 60. Torrential rainfall is also occurring with this storm, and may cause localized flooding. Do not drive your vehicle through flooded roadways. LAT...LON 4325 7168 4342 7177 4358 7142 4333 7126 TIME...MOT...LOC 1831Z 250DEG 11KT 4337 7164
The office that day
Everything else NWS Gray, ME issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 19, 12:29 AM EDT | Areal Flood Advisory | GYX | York | 2 hr |
| Aug 19, 2:47 PM EDT | Special Weather Statement | GYX | Oxford | 43 min |
| Aug 19, 3:12 PM EDT | Severe Thunderstorm Warning | GYX | Oxford | 37 min |
| Aug 19, 3:16 PM EDT | Severe Thunderstorm Warning | GYX | York | 44 min |
| Aug 19, 3:42 PM EDT | Severe Thunderstorm Warning | GYX | York | 37 min |
| Aug 19, 3:48 PM EDT | Severe Thunderstorm Warning | GYX | Androscoggin, Kennebec, Oxford | 42 min |
| Aug 19, 3:53 PM EDT | Special Weather Statement | GYX | York | 52 min |
| Aug 19, 4:12 PM EDT | Areal Flood Advisory | GYX | Oxford | 2 hr |
| Aug 19, 4:26 PM EDT | Severe Thunderstorm Warning | GYX | Androscoggin, Kennebec | 49 min |
| Aug 19, 4:27 PM EDT | Special Weather Statement | GYX | Cumberland | 48 min |
| Aug 19, 4:55 PM EDT | Severe Thunderstorm Warning | GYX | Kennebec, Knox, Lincoln, Waldo | 27 min |
| Aug 19, 5:01 PM EDT | Special Weather Statement | GYX | Androscoggin | 29 min |
| Aug 19, 5:35 PM EDT | Special Weather Statement | GYX | Androscoggin | 40 min |
| Aug 18, 9:50 PM EDT | Special Weather Statement | GYX | Cheshire | 25 min |
| Aug 18, 10:11 PM EDT | Special Weather Statement | GYX | Cheshire | 49 min |
| Aug 18, 11:20 PM EDT | Special Weather Statement | GYX | Strafford | 25 min |
| Aug 19, 2:31 PM EDT | Special Weather Statement | GYX | Belknap, Merrimack | 29 min |
| Aug 19, 2:38 PM EDT | Special Weather Statement | GYX | Merrimack | 52 min |
| Aug 19, 2:54 PM EDT | Special Weather Statement | GYX | Strafford | 51 min |
| Aug 19, 3:34 PM EDT | Special Weather Statement | GYX | Rockingham | 41 min |
| Aug 19, 3:55 PM EDT | Special Weather Statement | GYX | Hillsborough | 50 min |
Nearby
Severe Thunderstorm Warnings in New Hampshire, 2019Every severe thunderstorm warning in 2019
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.