Alert archive / Maine / Severe Thunderstorm Warnings in 2013

Severe Thunderstorm Warning 89, NWS Caribou, ME

September 11, 2013Penobscot County, Washington County, Maine

NWS Caribou, ME issued this severe thunderstorm warning at Sep 11, 2013, 6:48 PM EDT for Penobscot County, Washington County, Maine. It was in force for 57 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 11, 2013, 6:48 PM EDT (22:48 UTC)
Expired
Sep 11, 2013, 7:45 PM EDT
In force
57 min
Issued by
NWS Caribou, ME
Area
Storm-based polygon

Counties Penobscot County, ME, Washington County, ME

The radar

The Caribou radar (KCBW), 98 km from the middle of the area, began a volume at 22:51 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.

IssuedProductOfficeLasted
Sep 11, 2:33 PM EDTSevere Thunderstorm WatchSPC9 hr

The nearest sounding before it

Caribou, ME (KCAR), launched 12:00Z, 10.8 hours before the alert went out and 188 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, Caribou, ME at 12:00Z on 2013-09-11Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 2 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, Caribou, ME at 12:00Z on 2013-09-11The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 261 square meters per square second.19395878Sfc1 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
2 J/kg
Mixed-layer CIN
-327 J/kg
Mixed-layer LCL
438 m above ground
0-6 km bulk shear
52 kt
0-1 km storm-relative helicity
261 m²/s²
0-3 km storm-relative helicity
363 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 Caribou, ME wrote its last area forecast discussion before this severe thunderstorm warning went out at Sep 11, 6:22 PM EDT, 26 minutes earlier.

Area forecast discussion, Sep 11, 6:22 PM EDT, 26 minutes before
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Hazardous weather outlook, Sep 11, 2:59 PM EDT, 3 hours 49 minutes before
HAZARDOUS WEATHER OUTLOOK...UPDATED
NATIONAL WEATHER SERVICE CARIBOU ME
259 PM EDT WED SEP 11 2013

MEZ001>006-010-011-015-031-121900-
NORTHWEST AROOSTOOK-NORTHEAST AROOSTOOK-NORTHERN SOMERSET-
NORTHERN PISCATAQUIS-NORTHERN PENOBSCOT-SOUTHEAST AROOSTOOK-
CENTRAL PISCATAQUIS-CENTRAL PENOBSCOT-SOUTHERN PENOBSCOT-
SOUTHERN PISCATAQUIS-
259 PM EDT WED SEP 11 2013

...SEVERE THUNDERSTORM WATCH 521 IN EFFECT UNTIL 10 PM EDT THIS
EVENING...

THIS HAZARDOUS WEATHER OUTLOOK IS FOR EAST CENTRAL MAINE...NORTH
CENTRAL MAINE...NORTHERN MAINE AND WEST CENTRAL MAINE.

.DAY ONE...THIS AFTERNOON AND TONIGHT.

PLEASE LISTEN TO NOAA WEATHER RADIO OR GO TO WEATHER.GOV ON THE
INTERNET FOR MORE INFORMATION ABOUT THE FOLLOWING HAZARDS.

   SEVERE THUNDERSTORM WATCH.

.DAYS TWO THROUGH SEVEN...THURSDAY THROUGH TUESDAY.

STRONG THUNDERSTORMS ARE EXPECTED THURSDAY AFTERNOON INTO THE
EVENING. SOME THUNDERSTORMS COULD BECOME SEVERE WITH DAMAGING
WIND GUSTS AND LARGE HAIL. SOME OF THE STRONGER STORMS HAVE THE
POTENTIAL FOR ROTATION. FREQUENT CLOUD TO GROUND LIGHTNING AND
TORRENTIAL DOWNPOURS ARE ALSO EXPECTED WITH THE STRONGER STORMS.

.SPOTTER INFORMATION STATEMENT...

SPOTTERS PLEASE REPORT ANY SEVERE WEATHER TO LOCAL LAW ENFORCEMENT
WHO WILL RELAY THE REPORT TO THE NATIONAL WEATHER SERVICE.

MEZ016-017-032-121900-
INTERIOR HANCOCK-CENTRAL WASHINGTON-NORTHERN WASHINGTON-
259 PM EDT WED SEP 11 2013

THIS HAZARDOUS WEATHER OUTLOOK IS FOR SOUTHEAST MAINE.

.DAY ONE...THIS AFTERNOON AND TONIGHT.

THUNDERSTORMS CAN BE EXPECTED INTO THE EVENING HOURS. A FEW STORMS
COULD BECOME SEVERE WITH DAMAGING WIND GUSTS IN EXCESS OF 58 MPH.
HEAVY RAINFALL WITH STREET FLOODING IS POSSIBLE AS WELL.

.DAYS TWO THROUGH SEVEN...THURSDAY THROUGH TUESDAY.

STRONG THUNDERSTORMS ARE EXPECTED THURSDAY AFTERNOON INTO THE
EVENING. SOME THUNDERSTORMS COULD BECOME SEVERE WITH DAMAGING
WIND GUSTS AND LARGE HAIL. SOME OF THE STRONGER STORMS HAVE THE
POTENTIAL FOR ROTATION. FREQUENT CLOUD TO GROUND LIGHTNING AND
TORRENTIAL DOWNPOURS ARE ALSO EXPECTED WITH THE STRONGER STORMS.

.SPOTTER INFORMATION STATEMENT...

SPOTTERS PLEASE REPORT ANY SEVERE WEATHER TO LOCAL LAW ENFORCEMENT
WHO WILL RELAY THE REPORT TO THE NATIONAL WEATHER SERVICE.

MEZ029-030-121900-
COASTAL HANCOCK-COASTAL WASHINGTON-
259 PM EDT WED SEP 11 2013

THIS HAZARDOUS WEATHER OUTLOOK IS FOR SOUTHEAST MAINE.

.DAY ONE...THIS AFTERNOON AND TONIGHT.

NO HAZARDOUS WEATHER IS EXPECTED AT THIS TIME.

.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.

ANZ050>052-121900-
COASTAL WATERS FROM EASTPORT ME TO SCHOODIC POINT ME OUT 25 NM-
COASTAL WATERS FROM SCHOODIC POINT ME TO STONINGTON ME OUT 25 NM-
INTRACOASTAL WATERS FROM SCHOODIC POINT ME TO STONINGTON ME-
259 PM EDT WED SEP 11 2013

THIS HAZARDOUS WEATHER OUTLOOK IS FOR ATLANTIC COASTAL WATERS.

.DAY ONE...THIS AFTERNOON AND TONIGHT.

HAZARDOUS WEATHER IS NOT EXPECTED AT THIS TIME.

.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.

HEWITT

In the hours before

Local storm report, Sep 11, 5:03 PM EDT, 1 hour 45 minutes before
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Local storm report, Sep 11, 5:53 PM EDT, 55 minutes before
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Special weather statement, Sep 11, 6:06 PM EDT, 42 minutes before
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Local storm report, Sep 11, 6:13 PM EDT, 35 minutes before
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The office that day

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

IssuedProductOfficeCountiesLasted
Sep 11, 7:55 AM EDTSevere Thunderstorm WarningCARAroostook35 min
Sep 11, 8:54 AM EDTSevere Thunderstorm WarningCARAroostook, Penobscot, Piscataquis36 min
Sep 11, 2:49 PM EDTSevere Thunderstorm WarningCARAroostook, Piscataquis, Somerset41 min
Sep 11, 3:25 PM EDTSevere Thunderstorm WarningCARAroostook, Penobscot, Piscataquis, Somerset50 min
Sep 11, 4:04 PM EDTTornado WarningCARAroostook, Penobscot, Piscataquis26 min
Sep 11, 4:12 PM EDTSevere Thunderstorm WarningCARAroostook, Penobscot, Piscataquis48 min
Sep 11, 4:27 PM EDTTornado WarningCARAroostook33 min
Sep 11, 4:42 PM EDTAreal Flood AdvisoryCARAroostook3 hr
Sep 11, 4:53 PM EDTSevere Thunderstorm WarningCARAroostook, Penobscot52 min
Sep 11, 5:37 PM EDTSevere Thunderstorm WarningCARAroostook23 min
Sep 11, 6:12 PM EDTAreal Flood AdvisoryCARAroostook, Penobscot3 hr
Sep 11, 7:42 PM EDTSevere Thunderstorm WarningCARPenobscot, Washington63 min

Nearby

Severe Thunderstorm Warnings in Maine, 2013Every 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.