Thursday, July 25, 2013

Second Late July Rainstorm Update Two













Second Late July Rainstorm Update One














Fredericton and Southern York County
3:27 PM ADT Thursday 25 July 2013
Rainfall warning for
Fredericton and Southern York County issued

Rainfall amounts in excess of 60 millimetres possible for southwest and Central New Brunswick.

This is a warning that significant rainfall is expected or occurring in these regions. Monitor weather conditions..listen for updated statements.

A low over the Eastern Seaboard of the United States will approach the province by early Saturday. A slow moving warm front ahead of this system will start spreading rain into Southern New Brunswick early on Friday and will continue into the weekend.

Forecast guidance on the exact amounts and areas affected is still somewhat uncertain, but there is reasonable confidence that 60 millimetres or more will fall over the above regions. Some guidance indicates the possibility of near 90 millimetres locally, and more areas may require warnings if the storm track or intensity change.

Second Late July Rainstorm











HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE CARIBOU ME
404 AM EDT THU JUL 25 2013

MEZ002-005-006-011-015>017-029>032-260815-
NORTHEAST AROOSTOOK-NORTHERN PENOBSCOT-SOUTHEAST AROOSTOOK-
CENTRAL PENOBSCOT-SOUTHERN PENOBSCOT-INTERIOR HANCOCK-
CENTRAL WASHINGTON-COASTAL HANCOCK-COASTAL WASHINGTON-
SOUTHERN PISCATAQUIS-NORTHERN WASHINGTON-
404 AM EDT THU JUL 25 2013

THIS HAZARDOUS WEATHER OUTLOOK IS FOR EAST CENTRAL MAINE...NORTH
CENTRAL MAINE...NORTHERN MAINE AND SOUTHEAST MAINE.

.DAY ONE...TODAY AND TONIGHT.

NO HAZARDOUS WEATHER IS EXPECTED.

.DAYS TWO THROUGH SEVEN...FRIDAY THROUGH WEDNESDAY.

RAIN WILL SPREAD ACROSS ALL OF EASTERN MAINE FRI MORNING. SOME OF
THE RAIN WILL LIKELY FALL HEAVILY AT TIMES FRI INTO FRI EVENING. A
STORM TOTAL OF 2-2.5 INCHES WITH LOCALLY HIGHER AMOUNTS ARE
EXPECTED ACROSS DOWNEAST MAINE NORTH INTO SOUTHEAST AROOSTOOK
COUNTY THROUGH SAT MORNING WHEN THE STEADY RAIN IS EXPECTED TO
TAPER OFF. SMALL STREAMS AND CREEKS WILL LIKELY RISE TO NEAR
BANKFUL...AND THE MAIN STEM RIVERS ARE EXPECTED TO SEE SIGNIFICANT
WITHIN BANK RISES. PONDING OF WATER WILL OCCUR ON SOME ROADS WITH
WATER POSSIBLY COVERING SOME LOW WATER CROSSINGS.

.SPOTTER INFORMATION STATEMENT...

SPOTTER ACTIVATION IS NOT EXPECTED AT THIS TIME.

$$

CB

Grand Lake (NB) Area Tornado of July 20th 2013, an EF-1

AWCN14 CWHX 241625
SPECIAL WEATHER SUMMARY MESSAGE FOR NEW BRUNSWICK ISSUED BY 
ENVIRONMENT CANADA AT 1:25 PM ADT WEDNESDAY 24 JULY 2013.

...GRAND LAKE AREA TORNADO CLASSIFIED AS AN EF-1...

ON SATURDAY JULY 20, 2013 A HOT, HUMID AND UNSTABLE AIR MASS COMBINED 
WITH A COLD FRONT SWEEPING ACROSS NEW BRUNSWICK PRODUCED SEVERE 
THUNDERSTORMS ACROSS SOUTHERN PARTS OF THE PROVINCE. SCATTERED 
THUNDERSTORMS BEGAN TO DEVELOP NEAR MIDDAY ON SATURDAY WITH A FEW OF 
THOSE CELLS REACHING SEVERE THRESHOLDS BY EARLY EVENING. BRIEF HEAVY 
DOWNPOURS ALONG WITH GUSTY SURFACE WINDS WERE REPORTED BY CANWARN 
SEVERE WEATHER SPOTTERS IN A FEW LOCATIONS.

HOWEVER BY FAR THE MOST INTENSE EVENT ON THIS DAY OCCURRED IN THE 
GRAND LAKE AREA WHERE A TORNADO TOUCHED DOWN NEAR JEMSEG AND TRACKED 
IN A GENERAL EASTERLY DIRECTION. THE TORNADO PRODUCED AREAS OF 
SIGNIFICANT TREE DAMAGE FROM THE POINT OF TOUCHDOWN TO A DISTANCE OF 
NEAR 15 KM AWAY.

IN ADDITION TO THE TREE DAMAGE, AT LEAST 3 BARNS WERE DESTROYED IN 
THE WHITES COVE AREA WITH DEBRIS FROM THESE STRUCTURES FOUND AS FAR 
AS 350 M AWAY. DAMAGE WAS ALSO DOCUMENTED IN THE CAMBRIDGE NARROWS 
AREA WITH AT LEAST 3 MORE STRUCTURES DAMAGED OR DESTROYED INCLUDING 
ANOTHER LARGE BARN.  DEBRIS FROM THAT BARN WAS PICKED UP AND CARRIED 
OVER 300 M. POWER AND COMMUNICATIONS OUTAGES WERE ALSO REPORTED AS A 
RESULT OF THE TORNADO. REMARKABLY NO MAJOR INJURIES WERE REPORTED.

SEVERAL VIDEOS OF THE EVENT SHOW A WELL DEVELOPED TORNADO IN THE AREA 
AND AN ENVIRONMENT CANADA STORM SURVEY TEAM WAS ONSITE TO DOCUMENT 
THE DAMAGE. BASED ON CHARACTERISTICS OF THE DAMAGE OBSERVED BY THE 
STORM SURVEY TEAM, THIS TORNADO HAS BEEN CLASSIFIED AS AN EF-1 ON THE 
ENHANCED FUJITA SCALE.  EF-1 TORNADOES ACCOUNT FOR ABOUT 25 PERCENT 
OF ALL TORNADOES AND PRODUCE WINDS BETWEEN 135 KM/H AND 175 KM/H.

END/ASPC