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Post-Tropical Cyclone IDA Advisory Number 29
 
Issued 09:00Z Sep 02, 2021
 
Advisory Selection
View advisory number:  29   28   27   26   25   24   23   22   21   20   


BULLETIN
Post-Tropical Cyclone Ida Advisory Number  29
NWS Weather Prediction Center College Park MD   AL092021
500 AM EDT Thu Sep 02 2021

...POST-TROPICAL CYCLONE IDA NEAR EASTERN LONG ISLAND NOW
ACCELERATING NORTHEASTWARD TOWARD CAPE COD...
...WIDESPREAD HEAVY RAINFALL WILL CONTINUE TO WIND DOWN FROM
WEST TO EAST TODAY ACROSS EASTERN NEW ENGLAND...


SUMMARY OF 500 AM EDT...0900 UTC...INFORMATION
----------------------------------------------
LOCATION...41.4N 71.6W
ABOUT 25 MI...40 KM NE OF MONTAUK POINT NEW YORK
ABOUT 130 MI...210 KM ENE OF NEW YORK CITY
MAXIMUM SUSTAINED WINDS...40 MPH...65 KM/H
PRESENT MOVEMENT...NE OR 50 DEGREES AT 28 MPH...44 KM/H
MINIMUM CENTRAL PRESSURE...998 MB...29.47 INCHES


WATCHES AND WARNINGS
--------------------
Flood and Flash Flood Watches continue across portions of
southern New England.

Tornado Watches are in effect for portions of Rhode Island
and Southeast Massachusetts.


DISCUSSION AND OUTLOOK
----------------------
At 500 AM EDT (0900 UTC), the center of Post-Tropical Cyclone Ida
was located near latitude 41.4 North, longitude 71.6 West. The
post-tropical cyclone is moving toward the northeast near 28 mph (44
km/h), and some increase in the forward motion is expected on
Thursday.

Maximum sustained winds are near 40 mph (65 km/h) with higher gusts.
Little if any change in strength is forecast during the next 12
hours.

The estimated minimum central pressure is 998 mb (29.47 inches).


HAZARDS AFFECTING LAND
----------------------
RAINFALL: Post-Tropical Cyclone Ida will produce the following
rainfall totals:

Across Coastal Maine: 2 to 4 inches, with locally higher amounts
over Downeast Maine through Thursday afternoon.

Across Rhode Island and eastern Massachusetts: An additional 1 to 3
inches through Thursday morning.

For the latest rainfall reports and wind gusts associated with
Post-Tropical Cyclone Ida, see the companion storm summary at
WBCSCCNS4 with the WMO header of ACUS44 KWBC or at the following
link:

available at www.wpc.ncep.noaa.gov/discussions/nfdscc4.html


TORNADOES: A couple of tornadoes will be possible early Thursday
morning across Rhode Island and southeast Massachusetts.


NEXT ADVISORY
-------------
This is the last public advisory issued by the Weather Prediction
Center on this system.


Forecaster Hurley

FORECAST POSITIONS AND MAX WINDS

INIT  02/0900Z 41.4N  71.6W   35 KT  40 MPH...POST-TROP/EXTRATROP
 12H  02/1800Z 43.5N  67.6W   35 KT  40 MPH...POST-TROP/EXTRATROP