Alert archive / Maine / Severe Thunderstorm Warnings in 2008

Severe Thunderstorm Warning 172, NWS Gray, ME

July 31, 2008Oxford County, Maine

NWS Gray, ME issued this severe thunderstorm warning at Jul 31, 2008, 8:19 AM EDT for Oxford County, Maine. It was in force for 41 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, 2008, 8:19 AM EDT (12:19 UTC)
Expired: Jul 31, 2008, 9:00 AM EDT
In force: 41 min
Issued by: NWS Gray, ME
Area: Storm-based polygon

County Oxford County, ME

The radar

The Portland,ME radar (KGYX), 79 km from the middle of the area, began a volume at 12:22 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, 0.3 hours before the alert went out and 79 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-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

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: 196 J/kg
Mixed-layer CIN: -93 J/kg
Mixed-layer LCL: 859 m above ground
0-6 km bulk shear: 32 kt
0-1 km storm-relative helicity: 86 m²/s²
0-3 km storm-relative helicity: 113 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.3

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, 3:09 AM EDT, 5 hours 10 minutes earlier.

Area forecast discussion, Jul 31, 3:09 AM EDT, 5 hours 10 minutes before

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Hazardous weather outlook, Jul 31, 3:15 AM EDT, 5 hours 4 minutes before

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In the hours before

Special weather statement, Jul 31, 3:22 AM EDT, 4 hours 57 minutes before

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Special weather statement, Jul 31, 6:34 AM EDT, 1 hour 45 minutes before

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Special weather statement, Jul 31, 8:06 AM EDT, 13 minutes before

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The office that day

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

Issued	Product	Office	Counties	Lasted
Jul 31, 10:09 AM EDT	Areal Flood Advisory	GYX	Oxford	3 hr
Jul 31, 11:22 AM EDT	Severe Thunderstorm Warning	GYX	Androscoggin, Cumberland, Sagadahoc	68 min
Jul 31, 11:58 AM EDT	Areal Flood Advisory	GYX	Androscoggin, Cumberland, Oxford, Sagadahoc	3 hr
Jul 31, 1:25 PM EDT	Areal Flood Advisory	GYX	Oxford	3 hr
Jul 31, 4:55 PM EDT	Severe Thunderstorm Warning	GYX	York	50 min
Jul 31, 5:47 PM EDT	Areal Flood Advisory	GYX	Cumberland, York	88 min
Jul 31, 6:17 PM EDT	Areal Flood Warning	GYX	Cumberland, York	3 hr
Jul 31, 7:21 PM EDT	Areal Flood Advisory	GYX	York	84 min
Jul 31, 7:50 PM EDT	Special Marine Warning	GYX		55 min
Jul 31, 3:40 PM EDT	Areal Flood Advisory	GYX	Coos	2 hr
Jul 31, 4:38 PM EDT	Areal Flood Advisory	GYX	Grafton	112 min
Jul 31, 6:20 PM EDT	Severe Thunderstorm Warning	GYX	Belknap, Merrimack, Rockingham, Strafford	40 min
Jul 31, 6:25 PM EDT	Severe Thunderstorm Warning	GYX	Merrimack, Rockingham	35 min

Nearby

Severe Thunderstorm Warnings in Maine, 2008 Every severe thunderstorm warning in 2008

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.