Alert archive / New Hampshire / Severe Thunderstorm Warnings in 2019

Severe Thunderstorm Warning 29, NWS Gray, ME

July 31, 2019York County, Maine; Rockingham County, Strafford County, New Hampshire

NWS Gray, ME issued this severe thunderstorm warning at Jul 31, 2019, 2:58 PM EDT for York County, Maine; Rockingham County, Strafford County, New Hampshire. It was in force for 47 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 31, 2019, 2:58 PM EDT (18:58 UTC)
Expired
Jul 31, 2019, 3:45 PM EDT
In force
47 min
Issued by
NWS Gray, ME
Area
Storm-based polygon
Hail
1.0 in
Wind
60.0 mph

Counties York County, ME, Rockingham County, NH, Strafford County, NH

The radar

The Portland,ME radar (KGYX), 91 km from the middle of the area, began a volume at 18:57 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

Chatham, MA (KCHH), launched 12:00Z, 7.0 hours before the alert went out and 191 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.

Skew-T log-pSkew-T log-p diagram, Chatham, MA at 12:00Z on 2019-07-31Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 412 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Chatham, MA at 12:00Z on 2019-07-31The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 29 square meters per square second.193958Sfc1 km3 km6 km9 kmRMLM
The wind turning with height, colored by layer: ground to 1 km, 1 to 3 km, 3 to 6 km, 6 to 10 km.
Mixed-layer CAPE
412 J/kg
Mixed-layer CIN
-130 J/kg
Mixed-layer LCL
1287 m above ground
0-6 km bulk shear
14 kt
0-1 km storm-relative helicity
29 m²/s²
0-3 km storm-relative helicity
-6 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

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 Jul 31, 12:14 PM EDT, 2 hours 44 minutes earlier.

Area forecast discussion, Jul 31, 12:14 PM EDT, 2 hours 44 minutes before
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Hazardous weather outlook, Jul 31, 2:37 PM EDT, 21 minutes before
Hazardous Weather Outlook
National Weather Service Gray ME
237 PM EDT Wed Jul 31 2019

MEZ007>009-012>014-018>028-NHZ001>015-011845-
Northern Oxford-Northern Franklin-Central Somerset-Southern Oxford-
Southern Franklin-Southern Somerset-Interior York-
Interior Cumberland-Androscoggin-Kennebec-Interior Waldo-
Coastal York-Coastal Cumberland-Sagadahoc-Lincoln-Knox-Coastal Waldo-
Northern Coos-Southern Coos-Northern Grafton-Northern Carroll-
Southern Grafton-Southern Carroll-Sullivan-Merrimack-Belknap-
Strafford-Cheshire-Eastern Hillsborough-Interior Rockingham-
Coastal Rockingham-Western And Central Hillsborough-
237 PM EDT Wed Jul 31 2019

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...This Afternoon and Tonight.

Isolated strong to severe thunderstorms are possible this afternoon
into this evening. Localized heavy rain and damaging winds are
possible.

.DAYS TWO THROUGH SEVEN...Thursday through Tuesday.

No hazardous weather is expected at this time.

.SPOTTER INFORMATION STATEMENT...

Spotter activation is not expected at this time.

ANZ150>154-011845-
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-
237 PM EDT Wed Jul 31 2019

This Hazardous Weather Outlook is for Atlantic coastal waters.

.DAY ONE...This Afternoon and Tonight.

Isolated afternoon and evening thunderstorms may produce localized
strong winds.

.DAYS TWO THROUGH SEVEN...Thursday through Tuesday.

No hazardous weather is expected at this time.

.SPOTTER INFORMATION STATEMENT...

Spotter activation is not expected at this time.

The office that day

Everything else NWS Gray, ME issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Jul 30, 9:07 PM EDTSpecial Weather StatementGYXOxford38 min
Jul 30, 9:21 PM EDTSevere Thunderstorm WarningGYXAndroscoggin, Cumberland, Franklin, Oxford39 min
Jul 30, 9:58 PM EDTSpecial Weather StatementGYXKennebec32 min
Jul 31, 3:41 PM EDTSevere Thunderstorm WarningGYXYork49 min
Jul 31, 3:52 PM EDTSpecial Marine WarningGYX113 min
Jul 31, 3:56 PM EDTSevere Thunderstorm WarningGYXYork27 min
Jul 31, 4:41 PM EDTSevere Thunderstorm WarningGYXKennebec, Lincoln, Sagadahoc49 min
Jul 31, 5:29 PM EDTSpecial Weather StatementGYXLincoln31 min
Jul 31, 5:34 PM EDTSevere Thunderstorm WarningGYXFranklin, Oxford41 min
Jul 31, 5:35 PM EDTSevere Thunderstorm WarningGYXKnox, Lincoln, Waldo55 min
Jul 31, 5:54 PM EDTSpecial Marine WarningGYX66 min
Jul 31, 6:41 PM EDTSpecial Weather StatementGYXKennebec64 min
Jul 30, 8:22 PM EDTSpecial Weather StatementGYXCarroll53 min
Jul 31, 5:49 AM EDTSpecial Weather StatementGYXCoos41 min
Jul 31, 5:03 PM EDTSpecial Weather StatementGYXGrafton27 min
Jul 31, 5:59 PM EDTSpecial Weather StatementGYXCarroll61 min

Nearby

Severe Thunderstorm Warnings in New Hampshire, 2019Severe Thunderstorm Warnings in Maine, 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.