Cyclocane

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This is the final warning / advisory for this storm as it has weakened below warning levels and/or the storm system is no longer a tropical cyclone.

Go to the main page to see active storms.

Hurricane Time Machine

CALVIN Current Status

...CALVIN BECOMES POST-TROPICAL AS IT PULLS AWAY FROM HAWAII... ...THIS IS THE FINAL ADVISORY...

Current Wind Speed 35 knots / 40 MPH

Max Predicted Wind Speed 35 knots / 40 MPH at

CALVIN Land Hazards

CALVIN Tracker

CALVIN Satellite Loop

visible satellite loop of Post-Tropical Cyclone CALVIN from wisc.edu

visible satellite loop of Post-Tropical Cyclone CALVIN from wisc.edu

CALVIN Alternate Tracking Map

CALVIN Spaghetti Models

Spaghetti models for CALVIN can be found here:

CALVIN spaghetti models page »

CALVIN Watches and Warnings

Post-Tropical Cyclone CALVIN Tropical Cyclone Update

Post-Tropical Cyclone CALVIN Public Advisory

000
WTPA31 PHFO 192038
TCPCP1
 
BULLETIN
Post-Tropical Cyclone Calvin Advisory Number  33
NWS Central Pacific Hurricane Center Honolulu HI   EP032023
1100 AM HST Wed Jul 19 2023
 
...CALVIN BECOMES POST-TROPICAL AS IT PULLS AWAY FROM HAWAII...
...THIS IS THE FINAL ADVISORY...
 
 
SUMMARY OF 1100 AM HST...2100 UTC...INFORMATION
-----------------------------------------------
LOCATION...17.9N 158.5W
ABOUT 255 MI...410 KM WSW OF HILO HAWAII
ABOUT 240 MI...385 KM S OF HONOLULU HAWAII
MAXIMUM SUSTAINED WINDS...40 MPH...65 KM/H
PRESENT MOVEMENT...W OR 275 DEGREES AT 20 MPH...31 KM/H
MINIMUM CENTRAL PRESSURE...1009 MB...29.80 INCHES
 
 
WATCHES AND WARNINGS
--------------------
CHANGES WITH THIS ADVISORY...
 
The Tropical Storm Warning for Hawaii County has been discontinued.
 
SUMMARY OF WATCHES AND WARNINGS IN EFFECT...
 
None.
 
 
DISCUSSION AND OUTLOOK
----------------------
At 1100 AM HST (2100 UTC), the center of Post-Tropical Cyclone
Calvin was located near latitude 17.9 North, longitude 158.5 West.
The post-tropical cyclone is moving toward the west near 20 mph (31
km/h), and this motion is expected to continue through Thursday.
 
Maximum sustained winds are near 40 mph (65 km/h) with higher gusts.
Gradual weakening is expected until dissipation occurs late 
Thursday. 

Gale force winds extend outward up to 105 miles (165 km) from the 
center.
 
The estimated minimum central pressure is 1009 mb (29.80 inches).
 
 
HAZARDS AFFECTING LAND
----------------------
WIND: Tropical storm conditions have ended in Hawaii. Locally gusty
winds will likely continue today before easing tonight.
 
RAINFALL: As Calvin moves away from Hawaii, additional rainfall
totals of 1 to 3 inches are possible on the Big Island, with up to
2 inches possible on the other islands. Flooding impacts are
occurring on the Big Island, where over 6 inches of rain has
already fallen over windward and southeast slopes.
 
 
NEXT ADVISORY
-------------
This is the last public advisory issued by the Central Pacific
Hurricane Center on this system. Additional information on this 
system can be found in High Seas Forecasts issued by the National 
Weather Service in Honolulu, under AWIPS header HFOHSFNP, WMO 
header FZPN40 PHFO, and online at weather.gov/hfo/HSFNP.
 
$$
Forecaster Birchard

Public Advisory not available for this storm.

Post-Tropical Cyclone CALVIN Forecast Discussion

000
WTPA41 PHFO 192044
TCDCP1
 
Post-Tropical Cyclone Calvin Discussion Number  33
NWS Central Pacific Hurricane Center Honolulu HI   EP032023
1100 AM HST Wed Jul 19 2023
 
Visible satellite imagery shows that Calvin's fully exposed low-
level center is becoming increasingly broad and ill-defined. 
Subjective Dvorak fixes indicate that Calvin is too weak to 
classify, and central convection has been absent for sufficiently 
long that Calvin can safely be deemed post-tropical. Gale force 
winds continue in the northern semicircle for now, but increased 
vertical wind shear along the forecast track will prevent Calvin 
from redeveloping. The updated forecast track lies close to the 
well-performing HCCA and ECMWF guidance, with dissipation expected 
in about 36 hours as the environment becomes increasingly hostile.

This is the last advisory issued by the Central Pacific Hurricane 
Center on this system. Additional information on this system can be 
found in High Seas Forecasts issued by the National Weather Service 
in Honolulu, under AWIPS header HFOHSFNP, WMO header FZPN40 PHFO, 
and online at weather.gov/hfo/HSFNP. 


FORECAST POSITIONS AND MAX WINDS
 
INIT  19/2100Z 17.9N 158.5W   35 KT  40 MPH...POST-TROPICAL
 12H  20/0600Z 18.2N 161.3W   30 KT  35 MPH...POST-TROP/REMNT LOW
 24H  20/1800Z 18.5N 165.0W   30 KT  35 MPH...POST-TROP/REMNT LOW
 36H  21/0600Z...DISSIPATED
 
$$
Forecaster Birchard

CALVIN storm path from NHC

Time Speed Location Status
35 knots 17.9, -158.5 translation missing: en.POST-TROPICAL
30 knots 18.2, -161.3 POST-TROPICAL CYCLONE
30 knots 18.5, -165.0 POST-TROPICAL CYCLONE
0 knots translation missing: en.DISSIPATED


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