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BULLETIN
Tropical Storm Calvin Advisory Number  22
NWS National Hurricane Center Miami FL       EP032023
500 PM HST Sun Jul 16 2023
 
...CALVIN NEARING THE CENTRAL PACIFIC BASIN...
...EXPECTED TO BE NEAR THE HAWAIIAN ISLANDS BY LATE TUESDAY OR 
EARLY WEDNESDAY...
 
 
SUMMARY OF 500 PM HST...0300 UTC...INFORMATION
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LOCATION...16.4N 137.9W
ABOUT 1150 MI...1855 KM E OF HILO HAWAII
MAXIMUM SUSTAINED WINDS...60 MPH...95 KM/H
PRESENT MOVEMENT...W OR 280 DEGREES AT 17 MPH...28 KM/H
MINIMUM CENTRAL PRESSURE...998 MB...29.47 INCHES
 
 
WATCHES AND WARNINGS
--------------------
There are no coastal watches or warnings in effect.
 
Interests in Hawaii should monitor the progress of Calvin. A
Tropical Storm Watch may be required for portions of the main
Hawaiian Islands tonight.
 
 
DISCUSSION AND OUTLOOK
----------------------
At 500 PM HST (0300 UTC), the center of Tropical Storm Calvin was
located near latitude 16.4 North, longitude 137.9 West.  Calvin is
moving toward the west near 17 mph (28 km/h), and this general
motion is expected to continue during the next several days.  On the
forecast track, the center of Calvin will move into the central
Pacific basin late tonight or early Monday and approach the Hawaiian
Islands on Tuesday and early Wednesday.

Maximum sustained winds are near 60 mph (95 km/h) with higher gusts.
Some additional weakening is forecast during the next few days.

Tropical-storm-force winds extend outward up to 90 miles (150 km)
from the center.
 
The estimated minimum central pressure is 998 mb (29.47 inches).
 
 
HAZARDS AFFECTING LAND
----------------------
Key messages for Calvin can be found in the Tropical Cyclone
Discussion under AWIPS header MIATCDEP3 and WMO header WTPZ43 KNHC
and on the web at hurricanes.gov/text/miatcdep3.shtml
 
RAINFALL: Storm total rainfall amounts of 4-7 inches are possible
along windward areas of the Big Island of Hawaii from Tuesday night 
into Thursday, with lower amounts (1-4 inches) expected elsewhere in 
the state.  This rainfall could lead to localized flash flooding 
and mudslides.
 
SURF:  Swells generated by Calvin are expected to begin reaching the
Hawaiian Islands during the next couple of days.  These swells are
likely to cause life-threatening surf and rip current conditions.
Please consult products from your local weather office.
 
 
NEXT ADVISORY
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Next complete advisory at 1100 PM HST.
 
$$
Forecaster Pasch
 
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