000 WTPA31 PHFO 181316 CCA TCPCP1 BULLETIN Tropical Storm Calvin Intermediate Advisory Number 27A...Corrected NWS Central Pacific Hurricane Center Honolulu HI EP032023 200 AM HST Tue Jul 18 2023 CORRECTED LOCATION LONGITUDE ...DEEP CONVECTION INCREASING NEAR CALVIN AS IT TRACKS RAPIDLY WESTWARD TOWARD THE BIG ISLAND... ...TROPICAL STORM WARNINGS REMAIN IN EFFECT FOR HAWAII COUNTY... SUMMARY OF 200 AM HST...1200 UTC...INFORMATION ---------------------------------------------- LOCATION...17.4N 148.4W ABOUT 465 MI...750 KM ESE OF HILO HAWAII ABOUT 675 MI...1085 KM ESE OF HONOLULU HAWAII MAXIMUM SUSTAINED WINDS...45 MPH...75 KM/H PRESENT MOVEMENT...W OR 270 DEGREES AT 22 MPH...35 KM/H MINIMUM CENTRAL PRESSURE...1002 MB...29.59 INCHES WATCHES AND WARNINGS -------------------- CHANGES WITH THIS ADVISORY... None. SUMMARY OF WATCHES AND WARNINGS IN EFFECT... A Tropical Storm Warning is in effect for... * Hawaii County A Tropical Storm Warning means that tropical storm conditions are expected somewhere within the warning area in the next 24 to 36 hours. Interests elsewhere in Hawaii should monitor the progress of Calvin. For storm information specific to your area, please monitor products issued by the National Weather Service office in Honolulu Hawaii. DISCUSSION AND OUTLOOK ---------------------- At 200 AM HST (1200 UTC), the center of Tropical Storm Calvin was located near latitude 17.4 North, longitude 148.4 West. Calvin is moving toward the west near 22 mph (35 km/h), and this motion is expected to continue over the next few days. On this forecast track, tropical storm conditions are expected to start spreading over Hawaii County starting tonight. Maximum sustained winds are near 45 mph (75 km/h) with higher gusts. deep convection has been developing near Calvin early this morning, which may slow the weakening today. Calvin is forecast to gradually weaken from tonight through Thursday. Tropical-storm-force winds extend outward up to 105 miles (165 km) from the center. The estimated minimum central pressure is 1002 mb (29.59 inches). HAZARDS AFFECTING LAND ---------------------- Key messages for Calvin can be found in the Tropical Cyclone Discussion under AWIPS header TCDCP1 and WMO header WTPA41 PHFO. and on the web at hurricanes.gov/text/HFOTCDCP1.shtml WIND: Tropical storm conditions are expected within the warning area starting tonight. RAINFALL: From tonight into Thursday, storm total rainfall amounts of 4-8 inches, with maximum amounts of 10 inches are possible, mainly along the windward areas of the Big Island of Hawaii. Storm total rainfall amounts of 1-4 inches are expected elsewhere in the state. This rainfall could lead to localized flash flooding and mudslides. SURF: Swells generated by Calvin are expected to begin spreading across the main Hawaiian Islands later today and tonight. A rapid increase in surf is expected along east facing shorelines exposed to these swells from tonight into Wednesday. This elevated surf will likely cause life-threatening conditions along exposed shorelines. Please consult products from your local weather office for details. NEXT ADVISORY ------------- Next complete advisory at 500 AM HST. $$ Forecaster Houston