Severe Thunderstorm Warning 30, NWS Burlington, VT

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE BURLINGTON VT
243 PM EDT TUE JUL 5 2005

.SHORT TERM (TONIGHT THROUGH FRIDAY)...
A CONSENSUS IN THE GUIDANCE FOR TONIGHT THROUGH WEDNESDAY NIGHT
STARTING TO COME TOGETHER. LINE OF THUNDERSTORMS THIS AFTERNOON
STRETCHING FROM NORTHWEST VERMONT BACK ACROSS NRN CLINTON CO
NY...CENTRAL FRANKLIN...AND SRN ST LAWRENCE. THE LINE HAS FORMED
OUT AHEAD OF THE MAIN SURFACE FRONT...WHICH HAS JUST MOVED THROUGH
OTTAWA AND ENTERED THE NORTH SHORE OF LAKE ONTARIO.

THUNDERSTORM LINE WILL CONTINUE SOUTHEAST ACROSS REST OF
VERMONT...AND FRONT WILL TRAIL BY A COUPLE HOURS BEFORE BECOMING
STATIONARY ACROSS SOUTHERN VERMONT. OVERNIGHT A WAVE DEVELOPS
ALONG THE FRONT AND MOVES NORTHEAST...AS AN UPPER LEVEL TROUGH
SETTLES ACROSS THE REGION. NAM20/80 AND WSETA ALL HAVE
DIFFICULTIES WITH CONVECTIVE FEEDBACK THROUGH ABOUT 06Z
TONIGHT...THEN SETTLE DOWN AFTER THAT. HPC AND GFS QPF THROUGH 00Z
THURSDAY AROUND 1.5 INCHES.

BASED ON NERFC RIVER FORECASTS...AND RUNNING A COUPLE SCENARIOS
THRU LOCAL SITE SPECIFIC MODEL...WOULD TAKE ABOUT DOUBLE THE
FORECAST RAINFALL TO PRODUCE FLOODING. THEREFORE HAVE DECIDED
AGAINST ISSUING A FLOOD OR FLASH FLOOD WATCH FOR TONIGHT. WITH
STATIONARY FRONT REMAINING TO THE SOUTH...EXPECT MOSTLY STEADY
RAIN WITH A FEW EMBEDDED THUNDERSTORMS. SOME LOCALLY HEAVY
RAINFALL POSSIBLE IN CONVECTIVE ELEMENTS...SO WILL LEAVE IN HEAVY
RAINFALL WORDING THROUGH TONIGHT.

AFTER WEDNESDAY/WEDNESDAY NIGHT...THE SURFACE FRONT MOVES EAST AND
HIGH PRESSURE TRIES TO BUILD IN FROM THE WEST. HOWEVER PLENTY OF
LOW LEVEL MOISTURE REMAINS...AS DOES THE UPPER TROUGH. WITH COLD
POOL ALOFT AND DIURNAL HEATING...HAD TO LEAVE IN CHC SHOWERS
THROUGH REST OF SHORT TERM PERIOD...ALTHOUGH CHCS DECREASE HEADING
WEST INTO SAINT LAWRENCE VALLEY.

&&

.LONG TERM (FRIDAY NIGHT THROUGH TUESDAY)...
MODELS ARE IN POOR AGREEMENT... FRI NIGHT THE ECMWF BRINGS IN UL LOW
FASTER THAN GFS. AS THIS SYSTEM MVS TOWARDS THE AREA FRI NIGHT THERE
WL BE A CHC FOR PRECIP ESPECIALLY IN WESTERN ZONES.  SATURDAY AS
THE LOW APPROACHES FROM THE SOUTH WL MENTION CHC POPS THROUGHOUT THE
DAY...WITH THE BEST CHCS SAT NIGHT AS LOW MVS NORTH FROM CTRL NY
WITH SEVERAL EMBEDDED VORTS. THERE IS SOME UNCERTAINTY WITH THE
EXACT TRACK OF THE LOW... BUT MODELS SHOW GOOD Q-VECTOR CONVERGENCE
AND F-GEN WITH PLENTY OF MOISTURE AVAILABLE FOR PRECIP. 85H TEMPS WL
BE NEAR 12C.

ON SUNDAY... MODELS COME INTO BETTER AGREEMENT SHOWING THE LOW
MOVING OFF COAST OF MAINE DURING THE DAY AS A RIDGE APPROACHES FROM
THE WEST. 85H TEMPS WL BE AROUND 14C. SKIES SHOULD CLEAR OUT THRU
SUN NIGHT AS RIDGE CONTINUES TO BUILD INTO AREA. MONDAY SHOULD BE A
CLEAR DAY WITH 85H TEMPS NEAR 16C SUPPORTING HIGHS INTO THE MID 80S.
THERE IS A SLIGHT CHC OF SHRA MON NIGHT AS A WEAK VORT MVS THRU THE
SRN FA. TUESDAY WL BE ANOTHER NICE DAY AS HIGH PRESSURE REMAINS IN
PLACE OVER THE AREA. 85H TEMPS AROUND 18C WL ALLOW TEMPS TO CLIMB
INTO THE LOWER 90S.

&&

.AVIATION...
SOLID LINE OF THUNDERSTORMS FROM THE WRN ADIRONDACKS TO EXTREME
NWRN VT IS SUPPORTED BY LEADING EDGE OF PVA FROM LONG SKINNY VORT
TROF JUST WEST OF THE ST LAWRENCE RIVER.  FLOW IS STILL DEEP LAYERED
SWLY SO CNVTV COMPLEX LIKELY TO ADVANCE ONLY SLOWLY EWRD ACROSS
PRIMARILY THE NRN HALF OF THE FCST AREA THIS EVENING. EXPECT
THUNDERSTORMS NOW AT SLK WILL BE VICINITY OF BTV BY 20Z AND MAYBE
JUST NORTH OF MPV BY 21Z.  BEHIND THE THUNDERSTORMS  LINGERING
LIGHT SHOWERS...LOWER CEILINGS...SOME HAZE OR MIST...AND A SUBTLE
WIND SHIFT TO LIGHT NORTHWEST.  ACTUAL SFC COLD FRONT IS STILL WAY
BACK IN THE OTTAWA VLY SO HELD ONTO CHCS OF SHOWERS AT SITES UNTIL
MORE DECIDED WIND SHIFT ASSOCIATED WITH THE COLD FRONT AT
MSS/SLK/BTV/MPV RESPECTIVLEY AT 23Z/01Z/04Z/05Z.  EVEN AFTER THE
FRONT WE WILL BE WRINGING OUT LOTS OF MSTR IN THE FORM OF LOW LVL
CLOUDS AND IFR CONDITIONS LKLY THRU A COUPLE HOURS AFTER SUNRISE ON
WEDNESDAY.

&&

.BTV WATCHES/WARNINGS/ADVISORIES...
VT...NONE.
NY...NONE.

&&

SHORT TERM...HANSON
LONG TERM...TABER/CARPENTIER
AVIATION...REB

HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE BURLINGTON VT
409 AM EDT TUE JUL 5 2005

NYZ026>031-034-035-087-VTZ001>012-016>019-060808-
CALEDONIA VT-EASTERN ADDISON VT-EASTERN CHITTENDEN VT-
EASTERN CLINTON NY-EASTERN ESSEX NY-EASTERN FRANKLIN VT-
EASTERN RUTLAND VT-ESSEX VT-GRAND ISLE VT-LAMOILLE VT-
NORTHERN FRANKLIN NY-NORTHERN ST. LAWRENCE NY-ORANGE VT-ORLEANS VT-
SOUTHEASTERN ST. LAWRENCE NY-SOUTHERN FRANKLIN NY-
SOUTHWESTERN ST. LAWRENCE NY-WASHINGTON VT-WESTERN ADDISON VT-
WESTERN CHITTENDEN VT-WESTERN CLINTON NY-WESTERN ESSEX NY-
WESTERN FRANKLIN VT-WESTERN RUTLAND VT-WINDSOR VT-
INCLUDING THE CITIES OF...BARRE...BETHEL...BRANDON...BURLINGTON...
CANAAN...CANTON...DANBY...ESSEX JUNCTION...FAIR HAVEN...MALONE...
MASSENA...MIDDLEBURY...MONTPELIER...MORRISVILLE...NEWCOMB...
NEWPORT...OGDENSBURG...PLATTSBURGH...POTSDAM...RANDOLPH...RUTLAND...
SARANAC LAKE...SOUTH BURLINGTON...SPRINGFIELD...ST. ALBANS...
ST. JOHNSBURY...SWANTON...VERGENNES...WHITE RIVER JUNCTION...
WILLSBORO AND WINOOSKI
409 AM EDT TUE JUL 5 2005

THIS HAZARDOUS WEATHER OUTLOOK IS FOR NORTHERN NEW YORK AS WELL AS
CENTRAL AND NORTHERN VERMONT.

.DAY ONE...TODAY:
A COLD FRONT WILL MOVE THROUGH THE REGION INTO THE EVENING HOURS.
SOME THUNDERSTORMS PRODUCED ALONG THIS FRONT MAY PRODUCE LOCALLY
HEAVY DOWNPOURS ALONG WITH POTENTIALLY STRONG WIND GUSTS.

.DAYS TWO THROUGH SEVEN...WEDNESDAY THROUGH MONDAY:

ANOTHER LOW WILL MOVE ALONG THE COLD FRONT ON WEDNESDAY...WHICH COULD
RESULT IN LOCALLY HEAVY DOWNPOURS ACROSS PORTIONS OF THE NORTH
COUNTRY. THE POTENTIAL FOR FLASH FLOODING WILL HAVE TO BE MONITORED.

.SPOTTER CALL TO ACTION STATEMENT...

SPOTTER ACTIVATION MAY BE REQUIRED TODAY AND ON WEDNESDAY.

STAY TUNED TO NOAA WEATHER RADIO ALL HAZARDS OR YOUR LOCAL MEDIA
OUTLETS FOR UPDATES.

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE BURLINGTON VT
301 PM EDT TUE JUL 5 2005

NYZ028-031-035-VTZ001-002-005-016-017-052000-

GRAND ISLE-WESTERN FRANKLIN-EASTERN FRANKLIN-EASTERN
CHITTENDEN-WESTERN CHITTENDEN-EASTERN ESSEX-EASTERN CLINTON-WESTERN
CLINTON-

AT 254 PM EDT NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
LINE OF STRONG THUNDERSTORMS FROM SWANTON TO CLINTONVILLE...MOVING
SOUTHEAST AT 15 MPH.

THUNDERSTORMS WILL BE NEAR ST. ALBANS...NORTH FAIRFAX BY 320 PM...
NEAR SHELDON...MILTON BY 330 PM...NEAR FAIRFIELD...WINOOSKI BY 340
PM...NEAR BAKERSFIELD...SOUTH BURLINGTON BY 350 PM...NEAR WILLISTON
AND JERICHO BY 400 PM.

SMALL HAIL AND WIND GUSTS OF 45 MPH OR HIGHER MAY ACCOMPANY THE
THUNDERSTORMS. IN ADDITION...FREQUENT CLOUD TO GROUND LIGHTNING WILL
BE LIKELY WITH THIS LINE OF STRONG THUNDERSTORMS.

TABER

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE BURLINGTON VT
309 PM EDT TUE JUL 05 2005

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

0300 PM     TSTM WND DMG     FRANKLIN                44.98N 72.92W
07/05/2005                   FRANKLIN           VT   PUBLIC

            TREE LIMBS DOWN AND LOST POWER. ALSO...PEA SIZE HAIL.

&&

TABER

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE BURLINGTON VT
320 PM EDT TUE JUL 05 2005

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

0230 PM     HAIL             DANNEMORA               44.72N 73.72W
07/05/2005  0.75 INCH        CLINTON            NY   DEPT OF HIGHWAYS

&&

TABER

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE BURLINGTON VT
332 PM EDT TUE JUL 05 2005

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

0300 PM     TSTM WND DMG     FRANKLIN                44.98N 72.92W
07/05/2005                   FRANKLIN           VT   PUBLIC

            CHIMNEYS AND DOZENS OF TREES DOWN WITH STRONG WINDS
            ESTIMATED BETWEEN 58 TO 72 MPH. DEBRIS ALONG MAIN STREET
            IN TOWN.

&&

TABER

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