WTNT31 KNHC 240240
Post-Tropical Cyclone Ophelia Advisory Number 11
NWS National Hurricane Center Miami FL AL162023
1100 PM EDT Sat Sep 23 2023
...OPHELIA BECOMES A POST-TROPICAL LOW BUT CONTINUES TO POSE A
RISK OF COASTAL AND FLASH FLOODING ACROSS THE U.S. MID-ATLANTIC...
...FUTURE ADVISORIES WILL BE ISSUED BY THE WEATHER PREDICTION
SUMMARY OF 1100 PM EDT...0300 UTC...INFORMATION
ABOUT 30 MI...50 KM SSW OF RICHMOND VIRGINIA
ABOUT 85 MI...135 KM SE OF CHARLOTTESVILLE VIRGINIA
MAXIMUM SUSTAINED WINDS...35 MPH...55 KM/H
PRESENT MOVEMENT...N OR 360 DEGREES AT 8 MPH...13 KM/H
MINIMUM CENTRAL PRESSURE...1003 MB...29.62 INCHES
WATCHES AND WARNINGS
CHANGES WITH THIS ADVISORY:
SUMMARY OF WATCHES AND WARNINGS IN EFFECT:
Coastal flood warnings, as well as flood watches and flash flood
warnings, remain in effect for portions of the U.S. Mid-Atlantic.
DISCUSSION AND OUTLOOK
At 1100 PM EDT (0300 UTC), the center of Post-Tropical Cyclone
Ophelia was located near latitude 37.1 North, longitude 77.6 West.
Ophelia is moving toward the north near 8 mph (13 km/h). The
center of Ophelia is expected to turn toward the north-northeast
and northeast, moving across eastern Virginia and the Delmarva
Peninsula through Sunday.
Maximum sustained winds are near 35 mph (55 km/h) with higher gusts.
Little change in strength is forecast during the next day or so.
The post-tropical low is expected to become absorbed by a frontal
boundary Sunday night or early Monday.
The estimated minimum central pressure is 1003 mb (29.62 inches).
HAZARDS AFFECTING LAND
Key messages for Ophelia can be found in the Tropical Cyclone
Discussion under AWIPS header MIATCDAT1, WMO header WTNT41 KNHC,
and on the web at hurricanes.gov/text/MIATCDAT1.shtml
STORM SURGE: Water levels remain elevated within portions of
Chesapeake Bay and its tidal rivers but should gradually recede
overnight and into Sunday. For information specific to your area,
please see products issued by your local National Weather Service
RAINFALL: Ophelia is expected to produce the following additional
rainfall through Sunday night:
Portions of the Mid-Atlantic from Virginia through New Jersey...1
to 3 inches with isolated higher totals up to 5 inches.
Across southeastern New York through southern New England...1 to 3
This rainfall may produce localized flash, urban, and small stream
flooding impacts, particularly across the Mid-Atlantic region from
Virginia to New Jersey. Isolated river flooding is possible in areas
of heavier rainfall.
SURF: Swells generated by Ophelia will continue to affect much of
the east coast of the United States through the weekend. These
swells are likely to cause life-threatening surf and rip current
conditions. Please consult products from your local weather office.
This is the last public advisory issued by the National Hurricane
Center on Ophelia. Future information on this system can be
found in Public Advisories issued by the Weather Prediction Center
beginning at 500 AM EDT, under AWIPS header TCPAT1, WMO header
WTNT31 KWNH, and on the web at www.hurricanes.gov.