Laura Merges With A Frontal System Centered Over The Saint Lawrence Valley

 

Extratropical Low Laura

 

Laura Becomes Extratropical Over The Mid-Atlantic States

 BULLETIN

Post-Tropical Cyclone Laura Advisory Number  38

NWS Weather Prediction Center College Park MD   AL132020

500 AM EDT Sat Aug 29 2020

...LAURA BECOMES A REMNANT LOW...

...HEAVY RAINFALL AND FLASH FLOOD THREAT DIMINISHING...

SUMMARY OF 500 AM EDT...0900 UTC...INFORMATION

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LOCATION...38.4N 83.3W

ABOUT 130 MI...210 KM E OF LOUISVILLE KENTUCKY

ABOUT 90 MI...150 KM W OF CHARLESTON WEST VIRGINIA

MAXIMUM SUSTAINED WINDS...25 MPH...35 KM/H

PRESENT MOVEMENT...E OR 85 DEGREES AT 28 MPH...44 KM/H

MINIMUM CENTRAL PRESSURE...1004 MB...29.65 INCHES

WATCHES AND WARNINGS

--------------------

No coastal watches or warnings in effect.

DISCUSSION AND OUTLOOK

----------------------

At 500 AM EDT (0900 UTC), the center of Post-Tropical Cyclone Laura

was located near latitude 38.4 North, longitude 83.3 West. The

post-tropical cyclone is moving toward the east near 28 mph (44

km/h) and this motion is expected to accelerate further today

and Sunday.

Maximum sustained winds are near 25 mph (35 km/h) with higher gusts.

Some strengthening is forecast during the next 48 hours as it

emerges into the northwest Atlantic.  On Monday, the system should

be absorbed into a stronger low moving through Atlantic Canada.

The estimated minimum central pressure is 1004 mb (29.65 inches).

HAZARDS AFFECTING LAND

----------------------

RAINFALL: Additional rainfall of 1 to 2 inches is forecast across

eastern portions of the Mid-Atlantic states today.

This rainfall may cause isolated flash and urban flooding, and

small streams and creeks to overflow their banks across the

aforementioned regions. Minor to moderate river flooding is

occurring or forecast in Louisiana, Arkansas, and

northern Mississippi.

WIND:  Winds with Laura are expected to increase near and

offshore the Mid-Atlantic coast as the low pressure system moves

into the northwest Atlantic tonight and Sunday.

TORNADOES:  The risk for a couple of tornadoes should redevelop

Saturday afternoon and evening from North Carolina through the

Delmarva region.

NEXT ADVISORY

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This is the last public advisory issued by the Weather Prediction

Center on this system.

Forecaster Roth

FORECAST POSITIONS AND MAX WINDS

INIT  29/0900Z 38.4N  83.3W   20 KT  25 MPH...POST-TROP/REMNT LOW

 12H  29/1800Z 38.4N  78.7W   25 KT  30 MPH...POST-TROP/REMNT LOW

 24H  30/0600Z 38.3N  71.7W   35 KT  40 MPH...POST-TROP/REMNT LOW

 36H  30/1800Z 41.6N  63.9W   35 KT  40 MPH...POST-TROP/EXTRATROP

 48H  31/0600Z 45.0N  54.5W   35 KT  40 MPH...POST-TROP/EXTRATROP

 60H  31/1800Z...ABSORBED

Hazardous Weather Outlook

National Weather Service Caribou ME

424 AM EDT Sat Aug 29 2020

MEZ001>006-010-011-015>017-029>032-300830-

Northwest Aroostook-Northeast Aroostook-Northern Somerset-

Northern Piscataquis-Northern Penobscot-Southeast Aroostook-

Central Piscataquis-Central Penobscot-Southern Penobscot-

Interior Hancock-Central Washington-Coastal Hancock-

Coastal Washington-Southern Piscataquis-Northern Washington-

424 AM EDT Sat Aug 29 2020

This Hazardous Weather Outlook is for Central Highlands Maine,

Coastal DownEast Maine, Far Eastern Maine, Far Northern Maine,

Interior DownEast Maine, North Woods Maine and Penobscot Valley

Maine.

.DAY ONE...Today and Tonight.

Rain may be heavy at times Saturday afternoon into Saturday night as

a storm system moves across the region. Thunderstorms are possible

with the best chance for some storms being across the Maine Central

Highlands and Downeast. At this time, rainfall amounts could be in

the range of 1 to 1.50 across some areas in the Maine Central

Highlands and the Downeast region.

.DAYS TWO THROUGH SEVEN...Sunday through Friday.

Hazardous weather is not expected at this time.

.SPOTTER INFORMATION STATEMENT...

Weather spotters are encouraged to report significant weather

conditions according to Standard Operating Procedures.

$$