BULLETIN
Post-Tropical Cyclone Bertha Advisory Number   5
NWS Weather Prediction Center College Park MD   AL022020
500 AM EDT Thu May 28 2020

...BERTHA BECOMES EXTRATROPICAL AS IT LIFTS QUICKLY NORTHWARD...
...LOCALLY HEAVY RAIN AND FLOODING STILL POSSIBLE...


SUMMARY OF 500 AM EDT...0900 UTC...INFORMATION
----------------------------------------------
LOCATION...38.3N 80.8W
ABOUT 80 MI...130 KM NNW OF ROANOKE VIRGINIA
MAXIMUM SUSTAINED WINDS...25 MPH...35 KM/H
PRESENT MOVEMENT...N OR 10 DEGREES AT 28 MPH...44 KM/H
MINIMUM CENTRAL PRESSURE...1012 MB...29.89 INCHES


WATCHES AND WARNINGS
--------------------
Flash Flood Watches are in effect for central West Virginia
and a small part of coastal North Carolina through early morning.


DISCUSSION AND OUTLOOK
----------------------
At 500 AM EDT (0900 UTC), the center of Post-Tropical Cyclone Bertha
was located near latitude 38.3 North, longitude 80.8 West. The
post-tropical cyclone is moving toward the north near 28 mph (44
km/h) and this motion is expected to continue through midday
Thursday, followed by a turn to the north-northeast.

Maximum sustained winds are near 25 mph (35 km/h) with higher
gusts. Bertha is expected to weaken and dissipate by Thursday
evening as it crosses the eastern Great Lakes.

The estimated minimum central pressure is 1012 mb (29.89 inches).


HAZARDS AFFECTING LAND
----------------------
RAINFALL:  Bertha is expected to produce total rain accumulations
of around one inch from West Virginia through eastern Ohio,
southern and western Pennsylvania and far western New York, and 1
to 2 inches from South Carolina across eastern North Carolina into
southeast Virginia. Isolated maximum storm total amounts of 4
inches are possible in southern Pennsylvania and parts of the
Carolinas and southeast Virginia. This rainfall may produce life
threatening flash flooding, aggravate and prolong ongoing river
flooding, and produce rapid out of bank rises on smaller rivers.

WIND:  Gusty winds are possible across the higher elevations
of southwest Virginia and West Virginia as Bertha progresses across
the Appalachians.


NEXT ADVISORY
-------------
Next complete advisory at 1100 AM EDT.


Forecaster Burke

FORECAST POSITIONS AND MAX WINDS

INIT  28/0900Z 38.3N  80.8W   20 KT  25 MPH...POST-TROP/EXTRATROP
 12H  28/1800Z 41.8N  80.0W   15 KT  20 MPH...POST-TROP/EXTRATROP
 24H  29/0600Z...DISSIPATED