Alert archive / New Hampshire / Flash Flood Warnings in 2013

Flash Flood Warning 25, NWS Gray, ME

August 28, 20134 counties in New Hampshire

NWS Gray, ME issued this flash flood warning at Aug 28, 2013, 9:48 PM EDT for 4 counties in New Hampshire. It was in force for 117 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 28, 2013, 9:48 PM EDT (01:48 UTC)
Expired: Aug 28, 2013, 11:45 PM EDT
In force: 117 min
Issued by: NWS Gray, ME
Area: Storm-based polygon
Flood severity: None

Counties Belknap County, NH, Grafton County, NH, Merrimack County, NH, Sullivan County, NH

The radar

The Portland,ME radar (KGYX), 129 km from the middle of the area, began a volume at 01:49 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

Albany, NY (KALY), launched 00:00Z, 1.8 hours before the alert went out and 190 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: 0 J/kg
Mixed-layer CIN: No buoyant parcel
Mixed-layer LCL: 0 m above ground
0-6 km bulk shear: 19 kt
0-1 km storm-relative helicity: -5 m²/s²
0-3 km storm-relative helicity: -13 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 flash flood 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 flash flood warning went out at Aug 28, 9:36 PM EDT, 12 minutes earlier.

Area forecast discussion, Aug 28, 9:36 PM EDT, 12 minutes before

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Hazardous weather outlook, Aug 28, 2:46 PM EDT, 7 hours 2 minutes before

HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE GRAY ME
246 PM EDT WED AUG 28 2013

MEZ007>009-012>014-018>028-NHZ001>010-013-014-291900-
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-
246 PM EDT WED AUG 28 2013

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

.DAY ONE...THIS AFTERNOON AND TONIGHT.

SHOWERS AND THUNDERSTORMS ARE EXPECTED TO INCREASE IN COVERAGE
THIS AFTERNOON AND EARLY EVENING. SHOWERS AND THUNDERSTORMS WILL
BE SLOW MOVING AND CAPABLE OF HEAVY RAINFALL. LOCALIZED FLOODING
IS POSSIBLE.

.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>154-291900-
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-
246 PM EDT WED AUG 28 2013

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...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.

In the hours before

Special weather statement, Aug 28, 6:17 PM EDT, 3 hours 31 minutes before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE GRAY ME
617 PM EDT WED AUG 28 2013

MEZ012-018-019-NHZ004-006-282315-
INTERIOR CUMBERLAND-INTERIOR YORK-NORTHERN CARROLL-SOUTHERN
CARROLL-SOUTHERN OXFORD-
617 PM EDT WED AUG 28 2013

...STRONG THUNDERSTORMS WILL IMPACT OXFORD COUNTY...CARROLL COUNTY...
YORK COUNTY AND CUMBERLAND COUNTY THROUGH 715 PM EDT...

AT 617 PM EDT NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
STRONG THUNDERSTORM CENTERED 2 MILES SOUTHEAST OF BROWNFIELD...OR
ABOUT 9 MILES SOUTHEAST OF FRYEBURG...MOVING SOUTH AT 15 MPH. THIS
STRONG THUNDERSTORM WILL AFFECT AREAS IN AND AROUND DENMARK...
BROWNFIELD...EATON...CONWAY...SEBAGO...HIRAM...EAST SEBAGO...BIG
BASIN...FREEDOM AND WEST BALDWIN THROUGH 715 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 4372 7053 4367 7103 4401 7118 4401 7062

MLE

Special weather statement, Aug 28, 7:26 PM EDT, 2 hours 22 minutes before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE GRAY ME
726 PM EDT WED AUG 28 2013

MEZ018-NHZ003-005-006-009-010-290030-
BELKNAP-INTERIOR YORK-NORTHERN GRAFTON-SOUTHERN CARROLL-SOUTHERN
GRAFTON-STRAFFORD-
726 PM EDT WED AUG 28 2013

...STRONG THUNDERSTORMS WILL IMPACT BELKNAP COUNTY...STRAFFORD
COUNTY...CARROLL COUNTY...YORK COUNTY AND GRAFTON COUNTY THROUGH 830
PM EDT...

AT 727 PM EDT NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
CLUSTER OF STRONG THUNDERSTORMS CENTERED ALONG A LINE EXTENDING FROM
2 MILES SOUTHWEST OF NORTH WOODSTOCK TO 5 MILES EAST OF OSSIPEE...OR
ALONG A LINE EXTENDING FROM 3 MILES SOUTHWEST OF LINCOLN TO 5 MILES
EAST OF OSSIPEE...MOVING SOUTHEAST AT 25 MPH. THIS CLUSTER OF STRONG
THUNDERSTORMS WILL AFFECT AREAS IN AND AROUND WHITE LAKE STATE
PARK...WEST OSSIPEE...NORTH WOODSTOCK...NORTH SANDWICH...
PARSONSFIELD...WATERVILLE VALLEY...TAMWORTH...FREEDOM...EFFINGHAM AND
WOODSTOCK THROUGH 830 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 4407 7176 4393 7136 4392 7136 4392 7133
      4380 7099 4378 7097 4379 7095 4372 7075
      4337 7098 4373 7197

MLE

Local storm report, Aug 28, 7:35 PM EDT, 2 hours 13 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE GRAY ME
735 PM EDT WED AUG 28 2013

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

0655 PM     FLASH FLOOD      WATERVILLE              44.55N  69.63W
08/28/2013                   KENNEBEC           ME   LAW ENFORCEMENT

            6 TO 12 INCHES OF RAPIDLY FLOWING WATER ON SOME
            WATERVILLE STREETS

&&

EVENT NUMBER GYX1300288

MLE

Local storm report, Aug 28, 8:48 PM EDT, 1 hour before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE GRAY ME
848 PM EDT WED AUG 28 2013

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

0700 PM     TSTM WND DMG     READFIELD               44.39N  69.97W
08/28/2013                   KENNEBEC           ME   FIRE DEPT/RESCUE

            LARGE BRANCHES DOWN ON POWER LINES CAUSING OUTAGES.

&&

EVENT NUMBER GYX1300289

MLE

Local storm report, Aug 28, 8:58 PM EDT, 50 minutes before

PRELIMINARY LOCAL STORM REPORT...SUMMARY
NATIONAL WEATHER SERVICE GRAY ME
858 PM EDT WED AUG 28 2013

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

0445 PM     TSTM WND DMG     BINGHAM                 45.06N  69.88W
08/28/2013                   SOMERSET           ME   TRAINED SPOTTER

            LARGE TREES DOWN ACROSS RTE 201 BETWEEN BINGHAM AND
            CARATUNK

0655 PM     FLASH FLOOD      WATERVILLE              44.55N  69.63W
08/28/2013                   KENNEBEC           ME   LAW ENFORCEMENT

            6 TO 12 INCHES OF RAPIDLY FLOWING WATER ON SOME
            WATERVILLE STREETS

0700 PM     TSTM WND DMG     READFIELD               44.39N  69.97W
08/28/2013                   KENNEBEC           ME   FIRE DEPT/RESCUE

            LARGE BRANCHES DOWN ON POWER LINES CAUSING OUTAGES.

0715 PM     TSTM WND DMG     PERU                    44.51N  70.41W
08/28/2013                   OXFORD             ME   LAW ENFORCEMENT

            TREES DOWN ON POWER LINES

&&

EVENT NUMBER GYX1300287 GYX1300288 GYX1300289 GYX1300290

MLE

Special weather statement, Aug 28, 9:18 PM EDT, 30 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
Aug 28, 8:16 PM EDT	Areal Flood Advisory	GYX	Belknap, Carroll, Grafton, Merrimack, Sullivan	3 hr
Aug 28, 9:18 PM EDT	Special Weather Statement	GYX	Belknap, Merrimack, Sullivan	27 min
Aug 28, 9:27 PM EDT	Areal Flood Advisory	GYX	Grafton, Merrimack, Strafford, Sullivan	93 min
Aug 28, 10:21 PM EDT	Special Weather Statement	GYX	Merrimack, Sullivan	39 min

Nearby

Flash Flood Warnings in New Hampshire, 2013 Every flash flood 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.