Alert archive / Maine / Severe Thunderstorm Warnings in 2014

Severe Thunderstorm Warning 84, NWS Gray, ME

August 6, 2014Cumberland County, Lincoln County, Sagadahoc County, Maine

NWS Gray, ME issued this severe thunderstorm warning at Aug 6, 2014, 6:11 PM EDT for Cumberland County, Lincoln County, Sagadahoc County, Maine. It was in force for 49 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 6, 2014, 6:11 PM EDT (22:11 UTC)
Expired
Aug 6, 2014, 7:00 PM EDT
In force
49 min
Issued by
NWS Gray, ME
Area
Storm-based polygon

Counties Cumberland County, ME, Lincoln County, ME, Sagadahoc County, ME

The radar

The Portland,ME radar (KGYX), 29 km from the middle of the area, began a volume at 22:14 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

Chatham, MA (KCHH), launched 12:00Z, 10.2 hours before the alert went out and 249 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, Chatham, MA at 12:00Z on 2014-08-06Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 296 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, Chatham, MA at 12:00Z on 2014-08-06The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 12 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
296 J/kg
Mixed-layer CIN
-69 J/kg
Mixed-layer LCL
1032 m above ground
0-6 km bulk shear
40 kt
0-1 km storm-relative helicity
12 m²/s²
0-3 km storm-relative helicity
60 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 Aug 6, 3:07 PM EDT, 3 hours 4 minutes earlier.

Area forecast discussion, Aug 6, 3:07 PM EDT, 3 hours 4 minutes before
AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE GRAY ME
307 PM EDT WED AUG 6 2014

.SYNOPSIS...
A COLD FRONT WILL EXIT THE REGION TO THE SOUTHEAST THIS EVENING.
AN UPPER TROUGH WILL PRODUCE SCATTERED DAYTIME SHOWERS AND
ISOLATED THUNDERSTORMS THURSDAY AND FRIDAY. A LARGE RIDGE OF HIGH
PRESSURE AND DRIER AIR WILL ARRIVE IN TIME FOR THE UPCOMING
WEEKEND. THE HIGHS SHIFTS OFFSHORE EARLY NEXT WEEK...AND WILL
PRODUCE SOUTHWEST WINDS WHICH WILL ALLOW FOR A WARM UP.

&&

.NEAR TERM /TONIGHT/...
MAIN BAND OF SHRA AND TSRA WILL MOVE OFFSHORE THRU LATE
AFTERNOON. THERE ARE SCATTERED SHRA...WITH PERHAPS A RUMBLE OF
THUNDER BEHIND THIS LINE. THESE MAY LINGER IN THE MOUNTAINS AND
FOOTHILLS THRU ABOUT 00Z...BUT DOWNSLOPE WILL WEAKEN THEM AS THE
GET CLOSER TO THE COAST.

BEHIND THE FRONT...LOOK FOR SKIES TO CLEAR...WITH LOWER DEW POINTS
AND COOLER MINS. LOWS WILL GENERALLY BE IN THE 50S INLAND...TO
AROUND 60 ON THE COAST.

&&

.SHORT TERM /THURSDAY THROUGH THURSDAY NIGHT/...
LIGHT NW FLOW AT THE SURFACE WILL PERSIST ON THURSDAY...BUT 500 MB
CLOSED LOW CROSSES RIGHT OVER THE FORECAST AREA DURING DAYTIME
HEATING. THE INSTABILITY GENERATED WILL PRODUCE A FAIR AMOUNT OF
CLOUDS...AS WELL AS SHRA AND A FEW TSRA...GENERALLY FROM LATE
MORNING THRU AROUND SUNSET. COLD ENOUGH THAT ANY SUSTAINED
UPDRAFTS COULD PRODUCE SOME SMALL HAIL...BUT THESE WILL BE
LIMITED. ALL THE CLOUDS WILL LIMIT HIGHS IN THE NORTHERN ZONES TO
THE LOW TO MID 70S...WITH SOUTHERN AREAS GENERALLY IN THE MID
70S TO AROUND 80.

ANY SHRA WILL DIMINISH WITH THE LOSS OF HEATING THURSDAY
NIGHT...AND SKIES SHOULD CLEAR OUT SOME...WITH LOWS DROPPING
BACK INTO THE 50S MOST EVERYWHERE.

&&

.LONG TERM /FRIDAY THROUGH TUESDAY/...
HIGH PRESSURE OVER THE GREAT LAKES AND LOW PRESSURE OVER THE
CANADIAN MARITIMES KEEPS A NORTHERLY FLOW OVER THE AREA... WITH
GENERALLY DRY AND COOL CONDITIONS. HOWEVER... UPPER LOW OVER THE
MARITIMES AND AN IMPULSE ROTATING AROUND IT WILL CONTRIBUTE TO A
CHANCE OF SHOWERS FRIDAY AFTERNOON PRIMARILY ACROSS THE EASTERN
HALF OF THE AREA. INSTABILITY IS NOT ALL THAT IMPRESSIVE SO
THUNDERSTORMS ARE NOT VERY LIKELY.

UPPER LOW MOVES EAST ON SATURDAY... WITH THE SURFACE HIGH DRIFTING
EAST INTO THE AREA AS WELL. EXPECT DRY CONDITIONS WITH
TEMPERATURES WARMING A BIT... INTO THE LOW 80S.

AS SURFACE HIGH SHIFTS OFFSHORE ON SUNDAY... A SOUTHERLY FLOW WILL
BEGIN TO TRANSPORT MORE WARMTH AND MOISTURE INTO THE AREA. SO FOR
SUNDAY... MONDAY... AND TUESDAY... EXPECT GRADUALLY INCREASING
TEMPERATURES AND DEW POINTS AS WELL AS INCREASING CHANCES FOR
SHOWERS IN THE AFTERNOONS... ESPECIALLY IN THE MOUNTAINS.

BY TUESDAY... UPPER TROUGH OVER CANADA MOVES FAR ENOUGH EAST TO
DRAG A COLD FRONT CLOSER TO THE AREA. EXPECT INCREASED CHANCES OF
SHOWERS TUESDAY THROUGH THURSDAY AS THIS FRONT MAKES IT THROUGH
THE AREA SOMETIME IN THAT TIME FRAME.

&&

.AVIATION /19Z WEDNESDAY THROUGH MONDAY/...
SHORT TERM...ANY SHRA/TSRA IN MAINE WILL DIMINISH BY SUNSET...WITH
VALLEY FOG DEVELOPING AFTER MIDNIGHT. EXPECT MAINLY VFR ON
THURSDAY...WITH SCATTERED SHRA AND A FEW TSRA. THURSDAY
NIGHT...WITH THE EXCEPTION OF VALLEY FOG...EXPECT VFR.

LONG TERM...EXPECT A PERIOD OF PROLONGED VFR CONDITIONS THROUGH
EARLY NEXT WEEK... OUTSIDE OF THE USUAL VALLEY FOG AT NIGHT.

&&

.MARINE...
SHORT TERM...WINDS/SEAS REMAIN BELOW SCA LEVELS. SWELL WILL PUSH
SEAS UP TO NEAR 4 FT TONIGHT INTO THURSDAY.

LONG TERM...WITH HIGH PRESSURE MOVING OVER THE WATERS THIS
WEEKEND... EXPECT THE WIND FLOW TO BE DOMINATED BY SEA BREEZES.
WAVE HEIGHTS SHOULD REMAIN LOW AS WELL.

&&

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

&&

SYNOPSIS...CEMPA
NEAR TERM...CEMPA
SHORT TERM...CEMPA
LONG TERM...KIMBLE
AVIATION...CEMPA/KIMBLE
MARINE...CEMPA/KIMBLE
Hazardous weather outlook, Aug 6, 2:35 AM EDT, 15 hours 36 minutes before
HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE GRAY ME
235 AM EDT WED AUG 6 2014

MEZ007>009-012>014-018>028-NHZ001>010-013-014-070645-
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-INTERIOR ROCKINGHAM-COASTAL ROCKINGHAM-
235 AM EDT WED AUG 6 2014

THIS HAZARDOUS WEATHER OUTLOOK IS FOR WESTERN MAINE...CENTRAL NEW
HAMPSHIRE...NORTHERN NEW HAMPSHIRE AND SOUTHEASTERN 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>154-070645-
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-
235 AM EDT WED AUG 6 2014

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 6, 2:30 PM EDT, 3 hours 41 minutes before
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE GRAY ME
230 PM EDT WED AUG 6 2014

MEZ018-019-023-024-061900-
COASTAL CUMBERLAND-COASTAL YORK-INTERIOR CUMBERLAND-INTERIOR YORK-
230 PM EDT WED AUG 6 2014

...STRONG THUNDERSTORMS WILL IMPACT YORK COUNTY AND CUMBERLAND COUNTY
THROUGH 300 PM EDT...

AT 230 PM EDT NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
STRONG THUNDERSTORM CENTERED OVER STANDISH...OR ABOUT 9 MILES
SOUTHWEST OF NORTH WINDHAM...MOVING EAST AT 20 MPH. THIS STRONG
THUNDERSTORM WILL AFFECT AREAS IN AND AROUND STEEP FALLS...FRYE
ISLAND...LIMINGTON...STANDISH...LOWER BAY...BAR MILLS...NORTH
WINDHAM...BUXTON...SOUTH WINDHAM AND GORHAM THROUGH 300 PM EDT.

HAIL UP TO THREE QUARTER INCH IN DIAMETER...HEAVY DOWNPOURS...
EXCESSIVE CLOUD-TO-GROUND LIGHTNING AND GUSTY WINDS OF 35 TO 45 MPH
CAN BE EXPECTED.

LAT...LON 4370 7077 4386 7067 4381 7013 4371 7019
      4367 7023 4366 7022 4352 7031

MLE
Special weather statement, Aug 6, 2:38 PM EDT, 3 hours 33 minutes before
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE GRAY ME
238 PM EDT WED AUG 6 2014

MEZ022-027-028-061945-
COASTAL WALDO-INTERIOR WALDO-KNOX-
238 PM EDT WED AUG 6 2014

...STRONG THUNDERSTORMS WILL IMPACT KNOX COUNTY AND WALDO COUNTY
THROUGH 345 PM EDT...

AT 239 PM EDT NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
STRONG THUNDERSTORM CENTERED 2 MILES NORTH OF SEARSMONT...OR ABOUT 10
MILES WEST OF BELFAST...MOVING SOUTHEAST AT 25 MPH. THIS STRONG
THUNDERSTORM WILL AFFECT AREAS IN AND AROUND WASHINGTON...WALDO...
MORRILL...MONTVILLE...LIBERTY...APPLETON...SEARSMONT...SWAN LAKE
STATE PARK...SWANVILLE AND HOPE THROUGH 345 PM EDT.

HAIL UP TO THREE QUARTER INCH IN DIAMETER...HEAVY DOWNPOURS...
EXCESSIVE CLOUD-TO-GROUND LIGHTNING AND GUSTY WINDS OF 35 TO 45 MPH
CAN BE EXPECTED.

LAT...LON 4406 6886 4410 6896 4417 6892 4417 6900
      4431 6894 4415 6907 4430 6945 4461 6904
      4449 6881 4446 6880 4442 6887 4444 6891
      4442 6897 4434 6893 4440 6889 4438 6886
      4436 6885 4418 6894 4416 6891 4419 6879

MLE
Special weather statement, Aug 6, 3:05 PM EDT, 3 hours 6 minutes before
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE GRAY ME
305 PM EDT WED AUG 6 2014

MEZ023-061930-
COASTAL YORK-
305 PM EDT WED AUG 6 2014

...STRONG THUNDERSTORMS WILL IMPACT YORK COUNTY THROUGH 330 PM EDT...

AT 305 PM EDT NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
STRONG THUNDERSTORM CENTERED OVER FERRY BEACH STATE PARK...OR ABOUT 2
MILES EAST OF BIDDEFORD...MOVING EAST AT 15 MPH. THIS STRONG
THUNDERSTORM WILL AFFECT AREAS IN AND AROUND SACO...BIDDEFORD...OLD
ORCHARD BEACH AND FERRY BEACH STATE PARK THROUGH 330 PM EDT.

HAIL UP TO THREE QUARTER INCH IN DIAMETER...HEAVY DOWNPOURS...
EXCESSIVE CLOUD-TO-GROUND LIGHTNING AND GUSTY WINDS OF 35 TO 45 MPH
CAN BE EXPECTED.

LAT...LON 4344 7049 4354 7043 4353 7035 4350 7038
      4345 7036 4346 7034 4344 7033 4342 7037
      4340 7038

MLE
Local storm report, Aug 6, 4:13 PM EDT, 1 hour 58 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE GRAY ME
413 PM EDT WED AUG 06 2014

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0340 PM     MARINE TSTM WIND PORTLAND BUOY           43.53N  70.14W
08/06/2014  M40 MPH          ANZ154             ME   BUOY

&&

EVENT NUMBER GYX1400197

MPK
Special weather statement, Aug 6, 4:58 PM EDT, 1 hour 13 minutes before
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE GRAY ME
458 PM EDT WED AUG 6 2014

MEZ019-020-062145-
ANDROSCOGGIN-INTERIOR CUMBERLAND-
458 PM EDT WED AUG 6 2014

...STRONG THUNDERSTORMS WILL IMPACT ANDROSCOGGIN COUNTY AND
CUMBERLAND COUNTY THROUGH 545 PM EDT...

AT 458 PM EDT NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
STRONG THUNDERSTORM CENTERED 5 MILES NORTHEAST OF MECHANIC FALLS...
MOVING SOUTH AT 15 MPH. THIS STRONG THUNDERSTORM WILL AFFECT AREAS IN
AND AROUND MECHANIC FALLS...POLAND...MINOT...LEWISTON...AUBURN...
SABATTUS...RANGE PONDS STATE PARK...LISBON...BOWDOIN AND DURHAM
THROUGH 545 PM EDT.

HAIL UP TO THREE QUARTER INCH IN DIAMETER...HEAVY DOWNPOURS...
EXCESSIVE CLOUD-TO-GROUND LIGHTNING AND GUSTY WINDS OF 35 TO 45 MPH
CAN BE EXPECTED.

LAT...LON 4402 7004 4400 7003 4399 7005 4398 7003
      4395 7006 4388 7030 4410 7044 4421 7033
      4427 7022 4406 7002 4403 7002

MLE
Special weather statement, Aug 6, 5:44 PM EDT, 27 minutes before
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The office that day

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

IssuedProductOfficeCountiesLasted
Aug 5, 8:07 PM EDTSpecial Weather StatementGYXOxford23 min
Aug 5, 8:22 PM EDTSevere Thunderstorm WarningGYXYork38 min
Aug 5, 8:25 PM EDTSpecial Weather StatementGYXOxford35 min
Aug 5, 8:37 PM EDTSpecial Weather StatementGYXFranklin23 min
Aug 5, 8:57 PM EDTSpecial Weather StatementGYXFranklin33 min
Aug 5, 8:59 PM EDTSpecial Weather StatementGYXAndroscoggin31 min
Aug 5, 9:54 PM EDTSpecial Weather StatementGYXFranklin66 min
Aug 6, 1:11 PM EDTSpecial Weather StatementGYXKennebec49 min
Aug 6, 1:52 PM EDTSpecial Weather StatementGYXLincoln68 min
Aug 6, 1:53 PM EDTSpecial Weather StatementGYXSagadahoc67 min
Aug 6, 2:16 PM EDTSpecial Weather StatementGYXSagadahoc59 min
Aug 6, 2:30 PM EDTSpecial Weather StatementGYXCumberland30 min
Aug 6, 2:52 PM EDTSevere Thunderstorm WarningGYXCumberland38 min
Aug 6, 2:54 PM EDTSpecial Marine WarningGYX66 min
Aug 6, 3:05 PM EDTSpecial Weather StatementGYXYork25 min
Aug 6, 3:12 PM EDTSpecial Marine WarningGYX63 min
Aug 6, 4:58 PM EDTSpecial Weather StatementGYXAndroscoggin47 min
Aug 6, 5:22 PM EDTSevere Thunderstorm WarningGYXAndroscoggin, Cumberland, Sagadahoc53 min
Aug 6, 5:44 PM EDTSpecial Weather StatementGYXYork61 min
Aug 6, 6:13 PM EDTSpecial Marine WarningGYX62 min
Aug 6, 6:33 PM EDTSpecial Weather StatementGYXYork57 min
Aug 6, 6:38 PM EDTSpecial Weather StatementGYXKennebec67 min
Aug 5, 8:05 PM EDTSpecial Weather StatementGYXBelknap25 min
Aug 6, 1:32 PM EDTSpecial Weather StatementGYXCarroll28 min
Aug 6, 1:56 PM EDTSpecial Weather StatementGYXCarroll34 min
Aug 6, 7:35 PM EDTSpecial Weather StatementGYXStrafford25 min

Nearby

Severe Thunderstorm Warnings in Maine, 2014Every severe thunderstorm warning in 2014

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.