Hurricane Lee Event Summary
5:19 PM ADT Sunday 17 September 2023
This is a special meteorological summary for Post-tropical storm Lee. This is the final information statement for this storm.
1. Summary.
An area of disturbed weather emerged from the west coast of Africa in early September. By September 6th, a tropical cyclone had formed and in the following day it quickly intensified into a powerful hurricane over the central tropical Atlantic. At peak intensity, the winds reached 145 knots (269 km/h). Lee passed north of the Caribbean sea on September 10-11th and then started traveling towards the Gulf Stream and Atlantic Canada on the September 12-13th, passing west of Bermuda on the 14th. Hurricane Lee weakened as it reached the CHC Response Zone late on Friday the 15th. Lee was declared post-tropical as it approached the coast of western Nova Scotia the following day. Post-tropical storm Lee touched land over Long Island in Digby county early in the evening of the 16th with maximum sustained winds of 110 km/h and a central pressure estimated at 970 millibars. The remnant low travelled across the Gulf of St. Lawrence on Sunday the 17th before departing Newfoundland late that day.
2. Public weather impacts.
Tropical storm warnings were issued for most of Nova Scotia, Prince Edward Island, Iles-de-la-Madeleine, and parts of New Brunswick.
a. Wind.
Severe winds spread over Nova Scotia Friday night, and then over the remaining regions during the day Saturday. Winds gusts ranged from 80 to 120 km/h, with a gust of 150 km/h (unofficial) reported at Longs Eddy point, on Grand Manan Island, New Brunswick. Some of the regions experienced these violent winds for nearly 24 hours. Given the abundance of rainfall over the the summer months, the ground was quite saturated therefore trees were more easily uprooted. Widespread utility outages occurred especially across Nova Scotia where the strongest winds were reported.
Peak wind reports (km/h)
Nova Scotia:
Halifax Airport 117
Beaver Island 111
Brier Island 109
Lunenburg 109
Baccaro Point 107
New Brunswick:
Saint John 85
Grand Manan 83
Prince Edward Island:
Harrington 86
Charlottetown 83
b. Rainfall.
Rainfall warnings were in effect for parts of Nova Scotia, New Brunswick, Gaspe Peninsula, Anticosti Island and portions of the Quebec Lower North Shore. Amounts over 100 mm were expected with indications that areas northwest of the track (Fundy region and parts of New Brunswick and northern Gulf of St. Lawrence regions) would receive the highest amounts.
Rainfall reports (mm)
Nova Scotia:
Sluice Point 84
Port Maitland 80
Yarmouth 76
Kentville 70
Upper Ohio 68
Aldersville 63
Baccaro Point 60
New Brunswick:
Chamcook 118
Grand Manan 109
Fredericton 70-121
Grand Harbour 99
St. Stephen 91
Doaktown 88
Point Lepreau 85
Prince Edward Island:
no significant rainfall measured
c. Surge/Waves.
Large waves of 5 to 7 metres spread to the Atlantic Coast of Nova Scotia by Saturday morning, that along with the high tide produced some coastal flooding. The wave action diminished Saturday night.
Halifax Harbour buoy data:
Peak winds southeast 35 knots with gust to 49
Significant waves 3 to 8 metres
Peak wave 16 metres at 1 pm
Bedford Institute of Oceanography, Fisheries and Oceans Canada
Tide gauge/Water level Observation at 1049 am Saturday 2.539 m
Flooding stage 2.7 m
Observation minus Prediction 0.715
3. Marine weather impacts.
Storm force winds spread to the waters south and east of Lee's track. Significant wave heights of 5 to 10 meters impacted the marine district early Saturday. These wave gradually diminished later Saturday.
Lahave Bank buoy data:
Peak winds south 43 knots with gust to 56
Significant waves 6-11 metres
Peak wave 20 metres at 10 am
Forecaster: Couturier/Tirone
Storm Summary Number 1 for Heavy Rain and High Wind associated
with Lee
NWS Weather Prediction Center College Park MD
1100 AM EDT Sun Sep 17 2023
...Conditions improve across New England as Post-Tropical Cyclone
Lee tracks through the Canadian Maritimes...
No watches or warnings are currently in effect.
For a detailed graphical depiction of the latest watches, warnings
and advisories, please see www.weather.gov
At 1000 AM EDT...Post-Tropical Cyclone Lee continues a
northeastward track through the Canadian Maritimes. In Lee's wake,
surface observations indicate clear skies and light to gentle
northwesterly winds across New England.
...Selected preliminary Peak Wind gusts in miles per hour earlier
in the event...
...MAINE...
PERRY 6 NNW 83
ROQUE BLUFFS 24 SSE 63
CRIEHAVEN 3 SE 56
AUGUSTA 52
...MASSACHUSETTS...
CHAPIN 62
DENNIS 59
BOSTON-LOGAN INTL AIRPORT 42
...NEW HAMPSHIRE...
MT WASHINGTON 85
...Selected preliminary Storm Total Rainfall in inches where the
event has ended...
...MAINE...
WHITING 1 SSE 6.25
PERRY 3.8 NNW 6.06
LUBEC 4.1 W 5.42
COOPER 4.49
SULLIVAN 2.4 SSE 3.58
HOULTON 2.5 NNW 2.54
CARIBOU 2.14
BANGOR 2.02
Conditions over land will continue to improve today as Lee pulls
away to the northeast. However, dangerous and life-threatening rip
currents will continue to affect the U.S. East Coast through
Monday. For more information regarding the forecast for Lee,
please visit nhc.noaa.gov.
This will be the last Storm Summary issued by the Weather
Prediction Center for this event. Please refer to your local
National Weather service office for additional information.
Asherman
Weather summary
for Nova Scotia
issued by Environment Canada
at 3:23 a.m. ADT Sunday 17 September 2023.
Discussion.
The following area set a daily maximum temperature record on
September 16, 2023:
Cheticamp Area (Cheticamp Highlands National Park)
New record of 26.0
Old record of 24.3 set in 2003
Records in this area have been kept since 1956
Note: the temperature record reported here has been derived from a
selection of historical stations in this geographic area that were
active during the period of record.
Please note that this summary may contain preliminary or unofficial
information and does not constitute a complete or final report.
End/ASPC
Weather summary
for New Brunswick
issued by Environment Canada
at 4:00 p.m. ADT Sunday 17 September 2023.
Discussion.
The Maritimes were affected by post-tropical storm Lee this weekend.
Rain, wind, and high surf affected many areas on Saturday. Below is
a summary of weather information received by Environment Canada as
of Sunday at 2 pm ADT.
1. Summary of peak wind gusts in km/h:
Longs Eddy point - on Grand Manan Island (unofficial) 150
Saint John 85
Grand Manan 83
2. Summary of event-total rainfall in mm from EC weather stations:
St. Stephen 91
Doaktown 88
Point Lepreau 85
3. Summary of event-total rainfall in mm from CoCoRaHS volunteer
network:
Hanwell 121.1
Chamcook 117.6
Grand Harbour 99.3
Fredericton 95.3
Pennfield Ridge 93.4
White Head 85.1
New Maryland 85.1
More data will be added to this report as it becomes available.
Please note that this summary may contain preliminary or unofficial
information and does not constitute a complete or final report.
End/ASPC
Weather summary
for Nova Scotia
issued by Environment Canada
at 3:55 p.m. ADT Sunday 17 September 2023.
Discussion.
The Maritimes were affected by post-tropical storm Lee this weekend.
Rain, wind, and high surf affected many areas on Saturday. Below is
a summary of weather information received by Environment Canada as
of Sunday at 2 pm ADT.
1. Summary of peak wind gusts in km/h:
Halifax (Int'l Airport) 117
Beaver Island 111
Brier Island 109
Lunenburg 109
Baccaro Point 107
2. Summary of event-total rainfall in mm:
Port Maitland 80
Cedar Lake 77.5
Lower West Pubnico 63
Yarmouth 59.7
Bear River 59.4
More data will be added to this report as it becomes available.
Please note that this summary may contain preliminary or unofficial
information and does not constitute a complete or final report.
End/ASPC
Weather summary
for Quebec
issued by Environment Canada
at 10:54 a.m. EDT Sunday 17 September 2023.
Discussion.
Post-tropical storm Lee gave significant rainfall amounts over the
Eastern Gaspé Peninsula since Saturday morning. General rainfall
amounts of 40 to 55 millimetres have been reported; even 113
millimetres of rain have been reported in Gaspé. Additional rainfall
amounts of 10 millimetres are expected today over this region.
Rain will continue today over the North Shore where an additional 20
to 30 millimetres are expected by this evening.
Please note that this summary may contain preliminary or unofficial
information and does not constitute a complete or final report.
End/QSPC
Weather summary
for Quebec
issued by Environment Canada
at 10:54 a.m. EDT Sunday 17 September 2023.
Discussion.
Post-tropical storm Lee gave significant rainfall amounts over the
Eastern Gaspé Peninsula since Saturday morning. General rainfall
amounts of 40 to 55 millimetres have been reported; even 113
millimetres of rain have been reported in Gaspé. Additional rainfall
amounts of 10 millimetres are expected today over this region.
Rain will continue today over the North Shore where an additional 20
to 30 millimetres are expected by this evening.
Please note that this summary may contain preliminary or unofficial
information and does not constitute a complete or final report.
End/QSPC
Weather summary
for Newfoundland
issued by Environment Canada
at 4:18 a.m. NDT Sunday 17 September 2023.
Discussion.
The following area set a daily maximum temperature record on
September 16, 2023:
Placentia Area (Argentia (AUT))
New record of 24.9
Old record of 21.7 set in 1971
Records in this area have been kept since 1945
Note: the temperature record reported here has been derived from a
selection of historical stations in this geographic area that were
active during the period of record.
Please note that this summary may contain preliminary or unofficial
information and does not constitute a complete or final report.
End/NLWO
posted by Advackia at 8:58 PM
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