Alert archive / Maine / Severe Thunderstorm Warnings in 2019

Severe Thunderstorm Warning 57, NWS Gray, ME

September 24, 2019Kennebec County, Lincoln County, Sagadahoc County, Maine

NWS Gray, ME issued this severe thunderstorm warning at Sep 24, 2019, 2:29 PM EDT for Kennebec County, Lincoln County, Sagadahoc County, Maine. It was in force for 19 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
Sep 24, 2019, 2:29 PM EDT (18:29 UTC)
Expired
Sep 24, 2019, 2:48 PM EDT
In force
19 min
Issued by
NWS Gray, ME
Area
Storm-based polygon
Hail
1.0 in
Wind
60.0 mph

Counties Kennebec County, ME, Lincoln County, ME, Sagadahoc County, ME

The radar

The Portland,ME radar (KGYX), 50 km from the middle of the area, began a volume at 18:28 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 12:00Z, 6.5 hours before the alert went out and 50 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, Gray, ME at 12:00Z on 2019-09-24Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 112 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, Gray, ME at 12:00Z on 2019-09-24The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 12 square meters per square second.1939587897Sfc1 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
112 J/kg
Mixed-layer CIN
-47 J/kg
Mixed-layer LCL
922 m above ground
0-6 km bulk shear
47 kt
0-1 km storm-relative helicity
12 m²/s²
0-3 km storm-relative helicity
86 m²/s²
Significant tornado parameter
0.0
Supercell composite
-0.1

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 Sep 24, 9:50 AM EDT, 4 hours 39 minutes earlier.

Area forecast discussion, Sep 24, 9:50 AM EDT, 4 hours 39 minutes before
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Hazardous weather outlook, Sep 24, 4:03 AM EDT, 10 hours 26 minutes before
Hazardous Weather Outlook
National Weather Service Gray ME
403 AM EDT Tue Sep 24 2019

MEZ007>009-012>014-018>028-NHZ001>015-250815-
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-
403 AM EDT Tue Sep 24 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...Today and Tonight.

No hazardous weather is expected at this time.

.DAYS TWO THROUGH SEVEN...Wednesday through Monday.

No hazardous weather is expected at this time.

.SPOTTER INFORMATION STATEMENT...

Spotter activation is not expected at this time.

ANZ150>154-250815-
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-
403 AM EDT Tue Sep 24 2019

This Hazardous Weather Outlook is for Atlantic coastal waters.

.DAY ONE...Today and Tonight.

No hazardous weather is expected at this time.

.DAYS TWO THROUGH SEVEN...Wednesday through Monday.

No hazardous weather is expected at this time.

.SPOTTER INFORMATION STATEMENT...

Spotter activation is not expected at this time.

In the hours before

Special weather statement, Sep 24, 2:23 PM EDT, 6 minutes before
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The office that day

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

IssuedProductOfficeCountiesLasted
Sep 23, 11:14 PM EDTAreal Flood AdvisoryGYXAndroscoggin, Franklin, Kennebec, Oxford, Somerset3 hr
Sep 23, 11:28 PM EDTSpecial Weather StatementGYXOxford32 min
Sep 23, 11:56 PM EDTSpecial Weather StatementGYXKennebec34 min
Sep 24, 12:42 AM EDTFlash Flood WarningGYXSomerset2 hr
Sep 24, 12:45 AM EDTAreal Flood AdvisoryGYXFranklin, Somerset3 hr
Sep 24, 4:00 AM EDTSmall Craft Advisory for Hazardous SeasGYX10 hr
Sep 24, 2:23 PM EDTSpecial Weather StatementGYXSagadahoc37 min
Sep 24, 2:41 PM EDTSpecial Weather StatementGYXKnox34 min
Sep 24, 2:45 PM EDTSpecial Weather StatementGYXKennebec45 min
Sep 24, 2:51 PM EDTSevere Thunderstorm WarningGYXKnox, Waldo39 min
Sep 24, 2:53 PM EDTSpecial Marine WarningGYX37 min
Sep 24, 3:17 PM EDTSpecial Weather StatementGYXKennebec43 min
Sep 24, 3:18 PM EDTSpecial Weather StatementGYXWaldo42 min
Sep 24, 3:22 PM EDTAreal Flood AdvisoryGYXFranklin, Kennebec, Somerset113 min
Sep 24, 3:27 PM EDTSpecial Weather StatementGYXWaldo48 min
Sep 24, 3:31 PM EDTFlash Flood WarningGYXSomerset89 min
Sep 24, 3:34 PM EDTSpecial Marine WarningGYX41 min
Sep 24, 3:35 PM EDTSpecial Weather StatementGYXKnox40 min
Sep 24, 3:45 PM EDTSevere Thunderstorm WarningGYXKnox30 min
Sep 24, 4:02 PM EDTSpecial Weather StatementGYXWaldo58 min
Sep 24, 4:39 PM EDTAreal Flood AdvisoryGYXSomerset, Waldo2 hr
Sep 24, 5:51 PM EDTAreal Flood AdvisoryGYXKennebec, Somerset, Waldo3 hr
Sep 23, 8:55 PM EDTSpecial Weather StatementGYXCheshire, Sullivan35 min
Sep 23, 9:33 PM EDTSpecial Weather StatementGYXGrafton42 min
Sep 23, 9:36 PM EDTSpecial Weather StatementGYXHillsborough39 min
Sep 23, 10:38 PM EDTSpecial Weather StatementGYXRockingham37 min

Nearby

Severe 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.