Alert archive / New Hampshire / Severe Thunderstorm Warnings in 2007

Severe Thunderstorm Warning 9, NWS Gray, ME

June 2, 2007Rockingham County, New Hampshire

NWS Gray, ME issued this severe thunderstorm warning at Jun 2, 2007, 4:55 PM EDT for Rockingham County, New Hampshire. It was in force for 65 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
Jun 2, 2007, 4:55 PM EDT (20:55 UTC)
Expired
Jun 2, 2007, 6:00 PM EDT
In force
65 min
Issued by
NWS Gray, ME
Area
Counties, with a storm outline in the text

County Rockingham County, NH

The radar

The Boston radar (KBOX), 115 km from the middle of the area, began a volume at 20:55 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.

The watch it was issued in

The SPC watch in force over the same counties when this warning went out.

IssuedProductOfficeLasted
Jun 2, 1:50 PM EDTSevere Thunderstorm WatchSPC6 hr

The nearest sounding before it

Gray, ME (KGYX), launched 12:00Z, 8.9 hours before the alert went out and 121 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, Gray, ME at 12:00Z on 2007-06-02Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 36 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, Gray, ME at 12:00Z on 2007-06-02The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -14 square meters per square second.1939587897Sfc1 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
36 J/kg
Mixed-layer CIN
-81 J/kg
Mixed-layer LCL
1078 m above ground
0-6 km bulk shear
35 kt
0-1 km storm-relative helicity
-14 m²/s²
0-3 km storm-relative helicity
80 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.1

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 Jun 2, 2:53 PM EDT, 2 hours 2 minutes earlier.

Area forecast discussion, Jun 2, 2:53 PM EDT, 2 hours 2 minutes before
AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE GRAY ME
253 PM EDT SAT JUN 2 2007

.SYNOPSIS...
RIPPLES OF LOW PRESSURE WILL CONTINUE TO RIDE QUASI-
STATIONARY BOUNDARY THROUGH LATE WEEKEND.  LAST OF RIPPLES LOOKS
TO LINK UP WITH REMNANTS OF TROPICAL STORM ACTIVITY TO PROVIDE A
DECENT DOUSING LATER SUNDAY NIGHT INTO MONDAY NIGHT. COLD FRONT WILL
CROSS FORECAST AREA LATER TUESDAY FOLLOWED BY A DRYING HIGH PRESSURE
WEDNESDAY NIGHT INTO THURSDAY. NEXT WARM FRONT APPROACHES THURSDAY
NIGHT.

&&

.NEAR TERM /UNTIL 7 PM THIS EVENING/...
STRONG THUNDERSTORMS HAVE DEVELOPED OVER WESTERN MAINE AND
SOUTHERN NEW HAMPSHIRE ON THE SOUTH SIDE OF A WEAK BOUNDARY.
SEVERE THUNDERSTORM WATCH #331 IS IN EFFECT FOR PORTIONS OF THE
CWA THROUGH 00Z. CONTINUED AFTERNOON HEATING WILL HELP TO
DESTABILIZE THE ATMOSPHERE FURTHER. EXPECT STORMS TO FIRE UP OVER
SOUTHERN NH WHERE THE ATMOSPHERE HAS NOT BEEN WORKED OVER YET.

&&

.SHORT TERM /7 PM THIS EVENING THROUGH 6 PM SUNDAY/...
SURFACE BOUNDARY CONTINUES TO SLIDE SOUTH OVERNIGHT...COMING TO
REST JUST SOUTH OF THE CWA TOMORROW MORNING. NORTH OF THE
BOUNDARY...EXPECT TEMPERATURES TO BE NEARLY 15 DEGREES COOLER THAN
TODAY WITH SHOWERS POSSIBLE THROUGH THE DAY. SHOWERS WILL
CONTINUE OVER THE REGION THROUGH TOMORROW AFTERNOON.

&&

.LONG TERM /SUNDAY NIGHT THROUGH SATURDAY/...
SHOWERS SUNDAY WILL BECOME MORE OF A TROPICALLY INDUCED HEAVY RAIN
SUNDAY NIGHT INTO MONDAY. LATEST MODEL SOLUTIONS INDICATING 12 TO
24 HOUR PRECIPITATION AMOUNTS ON THE ORDER OF 1.5 TO 2 INCHES. FFG
GUIDANCE CALLING FOR AMOUNTS ON THE ORDER OF 3 TO 5 INCHES TO
CAUSE SIGNIFICANT FLOODING PROBLEMS...SO NOT ANTICIPATING PROBLEMS
AT THIS TIME.  COLD FRONT FINALLY CLEARS REGION LATER TUESDAY WITH
HIGH PRESSURE APPROACHING THE AREA WED INTO THU BEFORE NEXT WARM
FRONT APPROACHES AND HEATS THINGS UP FOR THE END OF THE WEEKEND.
GENERALLY FOLLOWED GUIDANCE FOR POPS/TEMPS.

&&

.AVIATION /19Z SATURDAY THROUGH THURSDAY/...
VFR AND MVFR CONDITIONS WILL DROP TO IFR/LIFR BY MORNING AS A WEAK
BOUNDARY MOVES THROUGH THE REGION BRINGING LOW CEILINGS AND
REDUCED VISIBILITY. REMNANTS OF TROPICAL STORM BARRY WILL AFFECT
THE REGION THROUGH TUESDAY...BRINGING LOW CEILINGS AND MORE RAIN.

LONG TERM...IFR SUNDAY NIGHT INTO TUESDAY...THEN SLOWLY INCREASING
TO VFR WEDNESDAY INTO THURSDAY.
 &&

.MARINE...
SHORT TERM...STRONG THUNDERSTORMS WILL AFFECT THE SOUTHERN WATERS
THIS EVENING. A WEAK BOUNDARY WILL MOVE THROUGH TONIGHT. SEAS WILL
INCREASE DURING THE DAY TOMORROW AND A SMALL CRAFT ADVISORY MAY BE
NEEDED TOMORROW AFTERNOON.

LONG TERM...MONDAY NIGHT INTO TUESDAY...WINDS/SEAS WILL INCREASE WITH
AT LEAST SCA...POSSIBLY MINIMAL GLW INTO TUESDAY...WITH SEAS SLOWLY
SUBSIDING TUESDAY INTO WED.

&&

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

&&
Hazardous weather outlook, Jun 2, 2:06 PM EDT, 2 hours 49 minutes before
HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE GRAY ME
206 PM EDT SAT JUN 2 2007

ANZ150-MEZ007>009-013-014-020>022-025>028-NHZ001-002-031815-
STONINGTON ME TO MERRIMACK RIVER MA OUT TO 25 NM-NORTHERN OXFORD-
NORTHERN FRANKLIN-CENTRAL SOMERSET-SOUTHERN FRANKLIN-
SOUTHERN SOMERSET-ANDROSCOGGIN-KENNEBEC-INTERIOR WALDO-SAGADAHOC-
LINCOLN-KNOX-COASTAL WALDO-NORTHERN COOS-SOUTHERN COOS-
206 PM EDT SAT JUN 2 2007

THIS HAZARDOUS WEATHER OUTLOOK IS FOR WESTERN MAINE...NORTHERN NEW
HAMPSHIRE AND THE COASTAL WATERS FROM STONINGTON ME TO THE
MERRIMACK RIVER MA.

.DAY ONE...THIS AFTERNOON AND TONIGHT

NO HAZARDOUS WEATHER IS EXPECTED AT THIS TIME.

.DAYS TWO THROUGH SEVEN...SUNDAY THROUGH FRIDAY

NO HAZARDOUS WEATHER IS EXPECTED AT THIS TIME.

.SPOTTER INFORMATION STATEMENT...

SPOTTER ACTIVATION IS NOT NEEDED.

MEZ012-018-019-023-024-NHZ003>010-013-014-031815-
SOUTHERN OXFORD-INTERIOR YORK-INTERIOR CUMBERLAND-COASTAL YORK-
COASTAL CUMBERLAND-NORTHERN GRAFTON-NORTHERN CARROLL-
SOUTHERN GRAFTON-SOUTHERN CARROLL-SULLIVAN-MERRIMACK-BELKNAP-
STRAFFORD-INTERIOR ROCKINGHAM-COASTAL ROCKINGHAM-
206 PM EDT SAT JUN 2 2007

...SEVERE THUNDERSTORM WATCH 331 IN EFFECT UNTIL 8 PM EDT THIS
EVENING...

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

.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...SUNDAY THROUGH FRIDAY

NO HAZARDOUS WEATHER IS EXPECTED AT THIS TIME.

.SPOTTER INFORMATION STATEMENT...

WEATHER SPOTTERS ARE ENCOURAGED TO REPORT SIGNIFICANT WEATHER
CONDITIONS ACCORDING TO STANDARD OPERATING PROCEDURES.

In the hours before

Special weather statement, Jun 2, 3:52 PM EDT, 1 hour 3 minutes before
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Special weather statement, Jun 2, 3:58 PM EDT, 57 minutes before
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Special weather statement, Jun 2, 4:09 PM EDT, 46 minutes before
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE GRAY ME
409 PM EDT SAT JUN 2 2007

NHZ005-022115-
SOUTHERN GRAFTON-
409 PM EDT SAT JUN 2 2007

...STRONG THUNDERSTORMS WILL IMPACT GRAFTON COUNTY THROUGH 515 PM
EDT...

AT 409 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
CLUSTER OF STRONG THUNDERSTORMS CENTERED 5 MILES WEST OF HANOVER...
MOVING EAST AT 25 MPH. THIS CLUSTER OF STRONG THUNDERSTORMS WILL
AFFECT HANOVER...LEBANON...ENFIELD...CANAAN AND ORANGE THROUGH 515
PM EDT.

HAIL UP TO ONE HALF INCH IN DIAMETER...FREQUENT CLOUD-TO-GROUND
LIGHTNING AND GUSTY WINDS OF 45 TO 55 MPH CAN BE EXPECTED. IN
ADDITION...UP TO ONE AND ONE-HALF INCHES OF RAIN COULD FALL IN LESS
THAN AN HOUR. THIS MUCH RAIN MAY RESULT IN LOCALIZED STREET FLOODING
AND FLOODING IN LOW LYING AREAS.

HAYES
Special weather statement, Jun 2, 4:22 PM EDT, 33 minutes before
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE GRAY ME
422 PM EDT SAT JUN 2 2007

NHZ008-013-022115-
INTERIOR ROCKINGHAM-MERRIMACK-
422 PM EDT SAT JUN 2 2007

...STRONG THUNDERSTORMS WILL IMPACT MERRIMACK COUNTY AND ROCKINGHAM
COUNTY THROUGH 515 PM EDT...

AT 422 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
CLUSTER OF STRONG THUNDERSTORMS CENTERED ABOUT 8 MILES SOUTH OF
CONCORD...MOVING EAST AT 15 MPH. THIS CLUSTER OF STRONG
THUNDERSTORMS WILL AFFECT BOW...CONCORD...HOOKSETT...SUNCOOK...
PEMBROKE...EPSOM...CANDIA AND ALLENSTOWN THROUGH 515 PM EDT.

HAIL UP TO ONE HALF INCH IN DIAMETER...FREQUENT CLOUD-TO-GROUND
LIGHTNING AND GUSTY WINDS OF 45 TO 55 MPH CAN BE EXPECTED.

HAYES
Special weather statement, Jun 2, 4:34 PM EDT, 21 minutes before
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE GRAY ME
434 PM EDT SAT JUN 2 2007

MEZ012-020-021-022130-
ANDROSCOGGIN-KENNEBEC-SOUTHERN OXFORD-
434 PM EDT SAT JUN 2 2007

...STRONG THUNDERSTORMS WILL IMPACT ANDROSCOGGIN COUNTY...KENNEBEC
COUNTY AND OXFORD COUNTY THROUGH 530 PM EDT...

AT 434 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
STRONG THUNDERSTORM CENTERED OVER HARTFORD...MOVING EAST AT 15 MPH.
THIS STRONG THUNDERSTORM WILL AFFECT CANTON...HARTFORD...LIVERMORE
FALLS...LEEDS...WAYNE...WINTHROP...READFIELD...MANCHESTER AND
HALLOWELL THROUGH 530 PM EDT.

HAIL UP TO ONE HALF INCH IN DIAMETER...FREQUENT CLOUD-TO-GROUND
LIGHTNING AND GUSTY WINDS OF 45 TO 55 MPH CAN BE EXPECTED. IN
ADDITION...UP TO ONE AND ONE-HALF INCHES OF RAIN COULD FALL IN LESS
THAN AN HOUR. THIS MUCH RAIN MAY RESULT IN LOCALIZED STREET FLOODING
AND FLOODING IN LOW LYING AREAS.

HAYES
Special weather statement, Jun 2, 4:50 PM EDT, 5 minutes before
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE GRAY ME
450 PM EDT SAT JUN 2 2007

MEZ021-026-027-022130-
KENNEBEC-KNOX-LINCOLN-
450 PM EDT SAT JUN 2 2007

...STRONG THUNDERSTORMS WILL IMPACT KENNEBEC COUNTY...KNOX COUNTY AND
LINCOLN COUNTY THROUGH 530 PM EDT...

AT 450 PM EDT NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
STRONG THUNDERSTORM CENTERED OVER HALLOWELL...MOVING EAST AT 20 MPH.
THIS STRONG THUNDERSTORM WILL AFFECT RANDOLPH...MANCHESTER...
GARDINER...FARMINGDALE...AUGUSTA. ..PITTSTON...CHELSEA...WINDSOR AND
WHITEFIELD THROUGH 530 PM EDT.

HAIL UP TO ONE HALF INCH IN DIAMETER...FREQUENT CLOUD-TO-GROUND
LIGHTNING AND GUSTY WINDS OF 45 TO 55 MPH CAN BE EXPECTED.

HAYES

The office that day

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

IssuedProductOfficeCountiesLasted
Jun 2, 1:47 PM EDTSevere Thunderstorm WarningGYXCumberland, York43 min
Jun 2, 2:19 PM EDTSpecial Marine WarningGYX56 min
Jun 2, 3:08 PM EDTSpecial Marine WarningGYX67 min
Jun 2, 4:48 PM EDTSevere Thunderstorm WarningGYXAndroscoggin30 min
Jun 2, 6:17 PM EDTSpecial Marine WarningGYX88 min
Jun 2, 7:09 PM EDTSevere Thunderstorm WarningGYXOxford66 min
Jun 2, 5:53 PM EDTSevere Thunderstorm WarningGYXRockingham67 min
Jun 2, 6:12 PM EDTSevere Thunderstorm WarningGYXCoos48 min
Jun 2, 7:13 PM EDTSevere Thunderstorm WarningGYXGrafton62 min

Nearby

Severe Thunderstorm Warnings in New Hampshire, 2007Every severe thunderstorm warning in 2007

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.