Alert archive / Maine / Severe Thunderstorm Warnings in 2013

Severe Thunderstorm Warning 64, NWS Caribou, ME

July 19, 2013Hancock County, Penobscot County, Washington County, Maine

NWS Caribou, ME issued this severe thunderstorm warning at Jul 19, 2013, 10:43 PM EDT for Hancock County, Penobscot County, Washington County, Maine. 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 19, 2013, 10:43 PM EDT (02:43 UTC)
Expired: Jul 19, 2013, 11:30 PM EDT
In force: 47 min
Issued by: NWS Caribou, ME
Area: Storm-based polygon

Counties Hancock County, ME, Penobscot County, ME, Washington County, ME

The radar

The Caribou radar (KCBW), 122 km from the middle of the area, began a volume at 02:44 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
Jul 19, 4:10 PM EDT	Severe Thunderstorm Watch	SPC	7 hr

The nearest sounding before it

Gray, ME (KGYX), launched 00:00Z, 2.7 hours before the alert went out and 203 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: 1670 J/kg
Mixed-layer CIN: -19 J/kg
Mixed-layer LCL: 1652 m above ground
0-6 km bulk shear: 39 kt
0-1 km storm-relative helicity: 209 m²/s²
0-3 km storm-relative helicity: 238 m²/s²
Significant tornado parameter: 0.6
Supercell composite: 8.2

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 Caribou, ME wrote its last area forecast discussion before this severe thunderstorm warning went out at Jul 19, 9:32 PM EDT, 1 hour 11 minutes earlier.

Area forecast discussion, Jul 19, 9:32 PM EDT, 1 hour 11 minutes before

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Hazardous weather outlook, Jul 19, 4:16 PM EDT, 6 hours 27 minutes before

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In the hours before

Local storm report, Jul 19, 7:57 PM EDT, 2 hours 46 minutes before

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Local storm report, Jul 19, 8:00 PM EDT, 2 hours 43 minutes before

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Local storm report, Jul 19, 8:07 PM EDT, 2 hours 36 minutes before

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Local storm report, Jul 19, 9:11 PM EDT, 1 hour 32 minutes before

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Local storm report, Jul 19, 9:16 PM EDT, 1 hour 27 minutes before

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Local storm report, Jul 19, 9:29 PM EDT, 1 hour 14 minutes before

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The office that day

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

Issued	Product	Office	Counties	Lasted
Jul 19, 8:42 PM EDT	Severe Thunderstorm Warning	CAR	Hancock, Penobscot, Washington	48 min
Jul 19, 10:01 PM EDT	Severe Thunderstorm Warning	CAR	Hancock, Penobscot	44 min
Jul 20, 4:21 PM EDT	Severe Thunderstorm Warning	CAR	Hancock, Washington	54 min
Jul 20, 4:48 PM EDT	Severe Thunderstorm Warning	CAR	Washington	27 min
Jul 20, 5:21 PM EDT	Severe Thunderstorm Warning	CAR	Hancock, Penobscot	39 min
Jul 20, 5:23 PM EDT	Special Weather Statement	CAR	Aroostook	37 min
Jul 20, 6:22 PM EDT	Special Weather Statement	CAR	Aroostook	23 min

Nearby

Severe Thunderstorm Warnings in Maine, 2013 Every severe thunderstorm warning in 2013

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.