Alert archive / Maine / Severe Thunderstorm Warnings in 2015

Severe Thunderstorm Warning 148, NWS Gray, ME

August 12, 2015Kennebec County, Lincoln County, Sagadahoc County, Maine

NWS Gray, ME issued this severe thunderstorm warning at Aug 12, 2015, 8:55 PM EDT for Kennebec County, Lincoln County, Sagadahoc County, Maine. It was in force for 50 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
Aug 12, 2015, 8:55 PM EDT (00:55 UTC)
Expired
Aug 12, 2015, 9:45 PM EDT
In force
50 min
Issued by
NWS Gray, ME
Area
Storm-based polygon

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 00:55 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.

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 Aug 12, 6:07 PM EDT, 2 hours 48 minutes earlier.

Area forecast discussion, Aug 12, 6:07 PM EDT, 2 hours 48 minutes before
AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE GRAY ME
607 PM EDT WED AUG 12 2015

.SYNOPSIS...
A LINGERING UPPER TROUGH WILL PRODUCE SOME CLOUDS ALONG WITH
SCATTERED MOUNTAIN SHOWERS TONIGHT AND THURSDAY. HIGH PRESSURE
MAKES A RETURN FOR THURSDAY NIGHT AND FRIDAY. A WEAK FRONT WILL
THEN MOVE THROUGH MAINE AND NEW HAMPSHIRE FRIDAY NIGHT AND
SATURDAY...BRINGING ANOTHER CHANCE OF SHOWERS TO THE AREA. A LARGE
RIDGE OF HIGH PRESSURE BUILDS ALONG THE EAST COAST SUNDAY AND
MONDAY BRINGING MUCH WARMER AND MORE HUMID AIR TO THE AREA.

&&

.NEAR TERM /TONIGHT/...
6PM UPDATE...
HAVE UPDATED HOURLY PRECIPITATION CHANCES TO REFLECT SCATTERED
SHOWERS AND THUNDERSTORMS ACROSS THE AREA. STORMS HAVE FOCUSED
ALONG COLLIDING OUTFLOW BOUNDARIES AND SEA/LAKE BREEZES FROM
SEBAGO LAKE EASTWARD TOWARD THE MIDCOAST. OTHER ACTIVITY HAS BEEN
MORE WIDELY SCATTERED AND WEAK.

ORIGINAL DISCUSSION...
A LINGERING UPPER TROUGH WILL REMAIN IN PLACE AND BRING WIDELY
SCATTERED SHOWERS TO THE MOUNTAINS TONIGHT. ELSEWHERE ANY SHOWERS
SHOULD QUICKLY DISSIPATE THIS EVENING WITH THE LOSS OF DIURNAL
HEATING. THE PARTLY CLOUDY SKIES IN THE EVENING WILL GRADUALLY
BECOME MOSTLY CLEAR. SOME PATCHY FOG IS POSSIBLE IN A FEW OF THE
VALLEY AREAS. WINDS WILL BE LIGHT SO TEMPERATURES WILL BE COOL
WITH LOWS IN THE 50S.

&&

.SHORT TERM /THURSDAY AND THURSDAY NIGHT/...
ON THURSDAY THE COMBINATION OF THE UPPER TROUGH AND DIURNAL
HEATING WILL ALLOW SOME CLOUDS TO PERK UP IN THE AFTERNOON. WITH
DRIER AIR IN PLACE WIDELY SCATTERED SHOWERS WOULD BE RESTRICTED TO
THE MOUNTAINS. IT WILL BE WARMER WITH HIGHS REACHING THE MID 70S
TO NEAR 80.

THURSDAY NIGHT THE UPPER TROUGH GETS KICKED EAST ALLOWING DRIER
HIGH PRESSURE TO BUILD INTO THE REGION. SKIES WILL BECOME CLEAR
ACROSS THE FORECAST AREA. ONCE AGAIN WINDS WILL BE LIGHT SO DUE
TO SOME RADIATIONAL COOLING TEMPERATURES WILL DROP INTO THE 50S.

&&

.LONG TERM /FRIDAY THROUGH WEDNESDAY/...
ON FRIDAY HIGH PRESSURE HOLDS FOR THE FIRST HALF OF THE DAY BEFORE
SHIFTING OFFSHORE. THE SOUTHERLY FLOW RETURNS AS A COLD FRONT
MOVES SOUTH OUT OF CANADA. TEMPERATURES SHOULD REACH NEAR OR JUST
ABOVE NORMAL IN A WEAK WARM AIR ADVECTION PATTERN. THE COLD FRONT
DOESN'T HAVE MUCH IN THE WAY OF DYNAMICS AND WILL MOVE ACROSS
NORTHERN NEW ENGLAND SATURDAY. THIS WILL BE A SLOW MOVING BOUNDARY
WITH HIGH MOISTURE WATER CONTENT AND WARM RAIN PROCESSES THAT
COULD LEAD TO FLOODING DURING THE EVENT. WIDESPREAD SHOWERS ARE
LIKELY WITH POSSIBLY SOME EMBEDDED WEAK THUNDERSTORMS.

HIGH PRESSURE DOMINATES THE SURFACE PRESSURE PATTERN SUNDAY WITH
TEMPERATURES IN THE 80S AREAWIDE. A WEAK FRONT WILL PUSH THROUGH
ON MONDAY. THE PARENT LOW WILL BE WELL REMOVED TO THE NORTH AND
THIS SHOULD BE ANOTHER CASE OF SCATTERED SHOWERS AND STORMS. THIS
RAINY PERIOD MAY LAST FOR A FEW DAYS AS AREAS OF LOW PRESSURE FORM
AND MOVE ALONG THE NOW STALLED BOUNDARY. HIGH TEMPERATURES WILL
SUFFER BY A FEW DEGREES BY MID-LATE WEEK IF THIS SCENARIO PANS
OUT.

&&

.AVIATION /22Z WEDNESDAY THROUGH MONDAY/...
SHORT TERM /THROUGH THURSDAY NIGHT/...VFR CONDITIONS EXCEPT LOCALLY
IFR 08-12Z IN ANY VALLEY FOG.

LONG TERM...MVFR CONDITIONS POSSIBLE IN SHOWERS FRIDAY AFTERNOON
FOR KHIE. ON SATURDAY MVFR OR LOWER IS POSSIBLE AT ALL TERMINALS
IN THUNDERSTORMS AS A SLOW MOVING FRONT PUSHES SOUTH. PREVAILING
VFR SUNDAY AND INTO MONDAY WITH SCATTERED AFTERNOON SHOWERS AND
ISOLATED STORMS MONDAY.

&&

.MARINE...
SHORT TERM /THROUGH THURSDAY NIGHT/...LIGHT WINDS AND MINIMAL SEAS
EXPECTED THROUGH THE PERIOD.

LONG TERM...WEAK PRESSURE GRADIENTS WILL KEEP WINDS AND SEAS BELOW
SCA CRITERIA THROUGH THE EXTENDED PERIOD.

&&

.GYX WATCHES/WARNINGS/ADVISORIES...
ME...NONE.
NH...NONE.
MARINE...NONE.

&&

NEAR TERM UPDATE...KIMBLE
SHORT TERM...MARINE
LONG TERM...HANES
AVIATION...MARINE
MARINE...HANES/MARINE
Hazardous weather outlook, Aug 12, 2:59 AM EDT, 17 hours 56 minutes before
HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE GRAY ME
259 AM EDT WED AUG 12 2015

MEZ007>009-012>014-018>028-NHZ001>015-130700-
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 NH-EASTERN HILLSBOROUGH NH-INTERIOR ROCKINGHAM-
COASTAL ROCKINGHAM-WESTERN AND CENTRAL HILLSBOROUGH NH-
259 AM EDT WED AUG 12 2015

THIS HAZARDOUS WEATHER OUTLOOK IS FOR WESTERN MAINE...CENTRAL NEW
HAMPSHIRE...NORTHERN NEW HAMPSHIRE...SOUTHEASTERN NEW HAMPSHIRE AND
SOUTHERN NEW HAMPSHIRE.

.DAY ONE...TODAY 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.

ANZ150>154-130700-
STONINGTON ME TO PORT CLYDE ME OUT TO 25 NM-PENOBSCOT BAY-
PORT CLYDE ME TO CAPE ELIZABETH ME OUT TO 25 NM-CASCO BAY-
CAPE ELIZABETH ME TO MERRIMACK RIVER MA OUT TO 25 NM-
259 AM EDT WED AUG 12 2015

THIS HAZARDOUS WEATHER OUTLOOK IS FOR CASCO BAY...PENOBSCOT
BAY...THE COASTAL WATERS FROM CAPE ELIZABETH ME TO MERRIMACK RIVER
MA...THE COASTAL WATERS FROM PORT CLYDE ME TO CAPE ELIZABETH ME AND
THE COASTAL WATERS FROM STONINGTON ME TO PORT CLYDE ME.

.DAY ONE...TODAY 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.

In the hours before

Special weather statement, Aug 12, 6:51 PM EDT, 2 hours 4 minutes before
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE GRAY ME
651 PM EDT WED AUG 12 2015

MEZ014-122330-
SOUTHERN SOMERSET ME-
651 PM EDT WED AUG 12 2015

THE NATIONAL WEATHER SERVICE IN GRAY MAINE HAS ISSUED A

* SPECIAL WEATHER STATEMENT FOR...
  SOUTHERN SOMERSET COUNTY IN MAINE

* UNTIL 730 PM EDT

* AT 650 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR WAS TRACKING
  A STRONG THUNDERSTORM 10 MILES NORTH OF SKOWHEGAN...MOVING TO THE
  NORTHEAST AT 15 MPH.

* DIME SIZE HAIL AND STRONG WIND GUSTS OF 45 TO 55 MPH ARE EXPECTED
  WITH THIS STORM.

* LOCATIONS IMPACTED INCLUDE...
  ATHENS...
  SAINT ALBANS...
  AND HARMONY.

LAT...LON 4484 6968 4495 6976 4504 6963 4501 6962
      4502 6952 4503 6952 4504 6950 4490 6939
TIME...MOT...LOC 2249Z 243DEG 12KT 4491 6967

KIMBLE
Special weather statement, Aug 12, 6:52 PM EDT, 2 hours 3 minutes before
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE GRAY ME
652 PM EDT WED AUG 12 2015

MEZ012-019-122345-
INTERIOR CUMBERLAND ME-SOUTHERN OXFORD ME-
652 PM EDT WED AUG 12 2015

THE NATIONAL WEATHER SERVICE IN GRAY MAINE HAS ISSUED A

* SPECIAL WEATHER STATEMENT FOR...
  INTERIOR CUMBERLAND COUNTY IN MAINE
  SOUTHERN OXFORD COUNTY IN MAINE

* UNTIL 745 PM EDT

* AT 652 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR WAS TRACKING
  A STRONG THUNDERSTORM OVER BRIDGTON...MOVING TO THE NORTHEAST AT 15
  MPH.

* PEA SIZE HAIL AND WIND GUSTS OF 35 TO 45 MPH ARE EXPECTED WITH THIS
  STORM.

* LOCATIONS IMPACTED INCLUDE...
  NAPLES...
  BRIDGTON...
  HARRISON...
  OTISFIELD...
  AND CASCO.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

PROLONGED HEAVY RAINFALL MAY CAUSE WATER TO FLOW OVER THE ROADWAY. DO
NOT DRIVE YOUR VEHICLE WHERE THE ROAD HAS BECOME FLOODED.

&&

LAT...LON 4410 7085 4422 7058 4401 7046 4394 7073
TIME...MOT...LOC 2252Z 242DEG 12KT 4406 7071

KIMBLE
Local storm report, Aug 12, 8:25 PM EDT, 30 minutes before
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Local storm report, Aug 12, 8:30 PM EDT, 25 minutes before
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Local storm report, Aug 12, 8:41 PM EDT, 14 minutes before
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Special weather statement, Aug 12, 8:43 PM EDT, 12 minutes before
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The office that day

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

IssuedProductOfficeCountiesLasted
Aug 12, 8:43 PM EDTSpecial Weather StatementGYXLincoln47 min
Aug 12, 9:25 PM EDTSevere Thunderstorm WarningGYXKnox, Waldo50 min

Nearby

Severe Thunderstorm Warnings in Maine, 2015Every severe thunderstorm warning in 2015

Sources

The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; radar from the NEXRAD Level II archive.