Alert archive / New Hampshire / Severe Thunderstorm Warnings in 2007
Severe Thunderstorm Warning 6, NWS Gray, ME
NWS Gray, ME issued this severe thunderstorm warning at Jun 1, 2007, 3:25 PM EDT for Rockingham County, New Hampshire. It was in force for 35 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 1, 2007, 3:25 PM EDT (19:25 UTC)
- Expired
- Jun 1, 2007, 4:00 PM EDT
- In force
- 35 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 19:28 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, 7.4 hours before the alert went out and 173 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.
- Mixed-layer CAPE
- 0 J/kg
- Mixed-layer CIN
- No buoyant parcel
- Mixed-layer LCL
- 1229 m above ground
- 0-6 km bulk shear
- 37 kt
- 0-1 km storm-relative helicity
- 159 m²/s²
- 0-3 km storm-relative helicity
- 138 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
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 1, 2:42 PM EDT, 43 minutes earlier.
Area forecast discussion, Jun 1, 2:42 PM EDT, 43 minutes before
AREA FORECAST DISCUSSION NATIONAL WEATHER SERVICE GRAY ME 242 PM EDT FRI JUN 1 2007 .SYNOPSIS... A FRONTAL BOUNDARY WILL REMAIN ACROSS THE REGION THROUGH THE WEEKEND...RESULTING IN SHOWERS AND THUNDERSTORMS AS THE FRONT SHIFTS. MOIST LOW PRESSURE WILL TRACK UP THE EASTERN SEABOARD...REACHING NEW ENGLAND MONDAY. && .NEAR TERM /UNTIL 11 PM THIS EVENING/... CONTINUING TO MONITOR THUNDERSTORMS DEVELOPING ACROSS SOUTHERN NEW HAMPSHIRE. THUS FAR STORMS ARE PULSING...WITH A VIL OF THE DAY AROUND 45 TO 50...WITH HIGH REFLECTIVITY CORES ALOFT ANOTHER GOOD INDICATOR. RUT REPORTED A GUST TO 43 KTS...WITH SOME HALF INCH HAIL REPORTS UPSTREAM...SO SEVERE POTENTIAL STILL EXISTS THROUGH THIS AFTERNOON. BASED ON RADAR...GREATEST THREAT CAN BE NARROWED TO SULLIVAN...MERRIMACK...AND ROCKINGHAM COUNTIES IN NEW HAMPSHIRE. OTHERWISE...EXPECT SHOWERS AND THUNDERSTORMS TO TAPER OFF SHORTLY AFTER DARK. SHOWERS IN THE MOUNTAINS MAY HANG ON A BIT LONGER...AS THEY ARE RIGHT ALONG THE FRONTAL BOUNDARY RATHER THAN SURFACE BASED CONVECTION. && .SHORT TERM /11 PM THIS EVENING THROUGH 6 PM SATURDAY/... EXPECT SHOWERS AND THUNDERSTORMS TO TAPER OF BY MIDNIGHT...WITH THE LOSS OF DAYTIME HEATING...AND WITH THE WEAKENING OF THE FRONTAL BOUNDARY. EXPECT PARTLY CLOUDY SKIES...WITH SOME FOG DEVELOPING IF IT REMAINS CLEAR LONG ENOUGH. WILL FORECAST PATCHY FOG...WITH LOWS NEAR NAM/GFS MOS. HOWEVER...COULD SEE LOCALLY LOWER (OR HIGHER) IF A LOCALIZED AREA CLEARS OUT LONGER. EITHER WAY...DEW POINTS WILL LIMIT LOWS AS FOG DEVELOPS. FOR SATURDAY...A SHORT WAVE PASSING TO THE NORTH WILL DRIVE THE FRONT BACK SOUTH. EARLY IN THE DAY...MOST OF NEW HAMPSHIRE AND THE SOUTHERN HALF OF MAINE WILL BE ON THE WARM SIDE OF THE FRONT...HOWEVER THE FRONT WILL PROGRESS SOUTHWARD. THIS WILL BRING ANOTHER ROUND OF SHOWERS AND THUNDERSTORMS SATURDAY. GENERALLY SEE HIGH CHANCE TO LOW LIKELY POPS WITH THE FRONT SOMEWHAT FOCUSING THE CONVECTION. AGAIN NAM/GFS MOS SEEMS OK FOR TEMPERATURES...EXCEPT DID TWEAK DOWN JUST NORTH OF THE FRONT...AND UP JUST SOUTH OF WHERE THE FRONT WILL REACH. THERE WILL AGAIN BE A SEVERE WEATHER POTENTIAL FOR SATURDAY...ALTHOUGH THE WINDS ALOFT WILL BE SLIGHTLY LESS FAVORABLE...INSTABILITY SHOULD BE ENOUGH TO PRODUCE SOME STRONG PULSE STORMS SATURDAY AFTERNOON. && .LONG TERM /SATURDAY NIGHT THROUGH FRIDAY/... QUASI-STATIONARY TO REMAIN SITUATED ACROSS NRN NEW ENGLAND THRU THE WEEKEND...LINED UP PARALLEL TO ENERGETIC NW FLOW ALOFT. THIS WILL KEEP THE CHC OF CONVECTION IN THE FORECAST RIGHT INTO SUNDAY NIGHT. SHRA/TSRA WILL BE SCT THOUGH...AND SOME DRY PERIODS WILL REMAIN POSSIBLE. BY SUNDAY NIGHT MODELS ARE IN BETTER AGREEMENT THAT SUB- TROPICAL/COASTAL SYSTEM WILL BE TRACKING NWD SOMEWHERE ALONG ERN SEABOARD...AND WILL LKLY START INTERACTING WITH 500MB AND SFC FRONT APPROACHING FROM THE WEST. THIS WILL LKLY LEAD TO WIDESPREAD SHRA OR A STEADY RAIN IN THE MON-TUE TIME FRAME. THIS SYSTEM COULD ALSO TRANSPORT TROPICAL MOISTURE INTO THE NE...WHICH MEANS A THREAT FOR HEAVY RAIN. ALL THIS IS STILL 3-4 DAYS AWAY...AND DEPENDS ON DEVELOPMENT OF THIS IN THE GULF OF MEXICO OVER THE NEXT DAY OR SO. MODELS ARE ALSO SUGGESTING THAT ALL THIS MAY FINALLY CLEAR OUT BY MID-LATE NEXT WEEK. && .AVIATION /17Z FRIDAY THROUGH TUESDAY/... FOR THE REMAINDER OF THIS AFTERNOON...THERE WILL BE SCATTERED THUNDERSTORMS SOUTH OF PWM-BML. ENOUGH CONFIDENCE TO MENTION IN TAFS AT PSM/CON/LEB...WITH PWM MARGINAL. WILL MONITOR RADAR TRENDS...AND AMEND ACCORDINGLY. THUNDERSTORMS COULD CONTAIN HAIL AND GUSTY WINDS. FOR TONIGHT...MAIN CHALLENGE IS FOG. OVERALL A VERY LOW CONFIDENCE WITH SCT-BKN CLOUDS THROUGHOUT THE NIGHT. IF SKIES CLEAR LONG ENOUGH...FOG SHOULD DEVELOP GIVEN THE WARM DEW POINTS. HOWEVER...IF IT REMAINS MOSTLY CLOUDY...THERE WILL BE NO FOG. PLAY IT IN THE MIDDLE AT ALL TAF SITES...BUT COULD FALL ON EITHER SIDE SITE BY SITE. EXPECT MAINLY VFR CONDITIONS SATURDAY...BUT THERE WILL AGAIN BE SCATTERED THUNDERSTORMS IN THE AFTERNOON. HEAVY RAINS AND EXTENDED PERIOD OF IFR OR LOWER POSSIBLE MON-TUE. && .MARINE... NO HEADLINES IN THE SHORT TERM. COULD SEE SOME STRONG THUNDERSTORMS APPROACH THE SOUTHERN WATERS THIS EVENING. DEPENDING ON THE DEVELOPMENT OF COASTAL SYSTEM MON-TUE...COULD SEE BOTH SEAS AND WINDS EXCEED SCA LVLS EARLY NEXT WEEK. && .GYX WATCHES/WARNINGS/ADVISORIES... ME...NONE. NH...NONE. MARINE...NONE. && SYNOPSIS...APFFEL/CEMPA NEAR TERM...APFFEL SHORT TERM...APFFEL LONG TERM...CEMPA AVIATION...APFFEL MARINE...APFFEL/CEMPA
Hazardous weather outlook, Jun 1, 6:31 AM EDT, 8 hours 54 minutes before
HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE GRAY ME 631 AM EDT FRI JUN 1 2007 MEZ007>009-012>014-018>028-NHZ001>010-013-014-021045- 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- 631 AM EDT FRI JUN 1 2007 THIS HAZARDOUS WEATHER OUTLOOK IS FOR WESTERN MAINE...CENTRAL NEW HAMPSHIRE...NORTHERN NEW HAMPSHIRE AND SOUTHEASTERN NEW HAMPSHIRE. .DAY ONE...TODAY AND TONIGHT SCATTERED THUNDERSTORMS FORMING IN THE VICINITY OF AN ADVANCING WARM FRONT COULD BRING STRONG GUSTY WINDS...HEAVY RAIN AND PERHAPS SOME HAIL TO SOUTHERN PORTIONS THIS AFTERNOON AND EVENING. .DAYS TWO THROUGH SEVEN...SATURDAY THROUGH THURSDAY THE TRACK OF A COASTAL STORM IS UNCERTAIN AT THIS TIME...BUT HAS THE POTENTIAL FOR BRINGING A SOAKING RAIN ON MONDAY. .SPOTTER INFORMATION STATEMENT... SPOTTER ACTIVATION MAY BE NEEDED THIS AFTERNOON AND EVENING. ANZ150-021045- STONINGTON ME TO MERRIMACK RIVER MA OUT TO 25 NM- 631 AM EDT FRI JUN 1 2007 THIS HAZARDOUS WEATHER OUTLOOK IS FOR THE COASTAL WATERS FROM STONINGTON ME TO THE MERRIMACK RIVER MA. .DAY ONE...TODAY AND TONIGHT NO HAZARDOUS WEATHER IS EXPECTED AT THIS TIME. .DAYS TWO THROUGH SEVEN...SATURDAY THROUGH THURSDAY AN APPROACHING COASTAL STORM COULD REQUIRE A SMALL CRAFT ADVISORY OR PERHAPS A GALE WARNING ON MONDAY. .SPOTTER INFORMATION STATEMENT... SPOTTER ACTIVATION IS NOT EXPECTED AT THIS TIME.
In the hours before
Special weather statement, Jun 1, 12:47 PM EDT, 2 hours 38 minutes before
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE GRAY ME 1247 PM EDT FRI JUN 1 2007 NHZ005-007>009-011800- SOUTHERN GRAFTON-SULLIVAN-MERRIMACK-BELKNAP- INCLUDING THE CITIES OF...LEBANON...HANOVER...PLYMOUTH... CLAREMONT...NEWPORT...CONCORD...LACONIA...TILTON-NORTHFIELD... MEREDITH 1247 PM EDT FRI JUN 1 2007 THUNDERSTORMS WILL DEVELOP ACROSS SOUTHWESTERN NEW HAMPSHIRE BETWEEN 100 PM AND 200 PM. THUNDERSTORMS MAY CONTAIN HAIL...AND STRONG WINDS. STAY TUNED TO NOAA WEATHER RADIO...OR YOUR LOCAL MEDIA OUTLETS...FOR THE LATESTS ON THIS DEVELOPING WEATHER. STRONG THUNDERSTORMS ARE EXPECTED TO CONTINUE THROUGH THE AFTERNOON HOURS. APFFEL
Special weather statement, Jun 1, 2:16 PM EDT, 1 hour 9 minutes before
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE GRAY ME 216 PM EDT FRI JUN 1 2007 NHZ007-011900- SULLIVAN- 216 PM EDT FRI JUN 1 2007 ...STRONG THUNDERSTORM WILL IMPACT SULLIVAN COUNTY THROUGH 300 PM EDT... AT 216 PM EDT NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A STRONG THUNDERSTORM CENTERED 3 MILES NORTHWEST OF CHARLESTOWN...OR ABOUT OVER SPRINGFIELD VERMONT...MOVING SOUTHEAST AT 20 MPH. THIS STRONG THUNDERSTORM WILL AFFECT AREAS IN AND AROUND CHARLESTOWN...UNITY...LANGDON...ACWORTH...LEMPSTER AND WASHINGTON THROUGH 300 PM EDT. HAIL UP TO ONE HALF INCH IN DIAMETER...CLOUD-TO-GROUND LIGHTNING AND GUSTY WINDS OF UP TO 40 MPH CAN BE EXPECTED. MC
Special weather statement, Jun 1, 2:31 PM EDT, 54 minutes before
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE GRAY ME 231 PM EDT FRI JUN 1 2007 NHZ008-009-011915- BELKNAP-MERRIMACK- 231 PM EDT FRI JUN 1 2007 ...STRONG THUNDERSTORMS WILL IMPACT BELKNAP COUNTY AND MERRIMACK COUNTY THROUGH 315 PM EDT... AT 231 PM EDT NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A STRONG THUNDERSTORM CENTERED 3 MILES NORTHEAST OF ANDOVER...OR ABOUT 7 MILES WEST OF FRANKLIN...MOVING SOUTHEAST AT 30 MPH. THIS STRONG THUNDERSTORM WILL AFFECT AREAS IN AND AROUND HILL...ANDOVER... SALISBURY...FRANKLIN...WEBSTER...TILTON..NORTHFIELD...BOSCAWEN AND CANTERBURY THROUGH 315 PM EDT. HAIL UP TO ONE HALF INCH IN DIAMETER...CLOUD-TO-GROUND LIGHTNING AND GUSTY WINDS OF UP TO 45 MPH CAN BE EXPECTED. MC
Special weather statement, Jun 1, 3:02 PM EDT, 23 minutes before
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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.