Evacuations for Florence, Latest on Helene, Isaac

Florence, Isaac, Helene

Miami, Fla.-(Newsradio 970 WFLA)- The governor of South Carolina has issued mandatory coastal evacuation orders ahead of hurricane watches, which could be posted as soon as tomorrow morning for Hurricane Florence. 

Florence's top winds are now 140 miles per hour... it's about 1200 miles east southeast of Cape Fear, North Carolina (Wilimington). The new cone of uncertainty seems to have shifted north. The latest on Hurricanes Florence, Isaac and Helene from the National Hurricane Center: 

BULLETIN Hurricane Florence Advisory Number  46 NWS National Hurricane Center Miami FL       AL062018 500 PM AST Mon Sep 10 2018
...FLORENCE GROWING IN SIZE AND STRENGTH... ...HURRICANE AND STORM SURGE WATCHES COULD BE ISSUED TUESDAY MORNING...

SUMMARY OF 500 PM AST...2100 UTC...INFORMATION ---------------------------------------------- LOCATION...25.4N 61.1W ABOUT 525 MI...845 KM SSE OF BERMUDA ABOUT 1170 MI...1880 KM ESE OF CAPE FEAR NORTH CAROLINA MAXIMUM SUSTAINED WINDS...140 MPH...220 KM/H PRESENT MOVEMENT...WNW OR 285 DEGREES AT 13 MPH...20 KM/H MINIMUM CENTRAL PRESSURE...939 MB...27.73 INCHES

WATCHES AND WARNINGS -------------------- There are no coastal watches or warnings in effect.
Interests in the southeastern and mid-Atlantic states should monitor the progress of Florence. Storm Surge and Hurricane watches could be issued for portions of these areas by Tuesday morning.

DISCUSSION AND OUTLOOK ---------------------- At 500 PM AST (2100 UTC), the eye of Hurricane Florence was located near latitude 25.4 North, longitude 61.1 West. Florence is moving toward the west-northwest near 13 mph (20 km/h). This general motion with an increase in forward speed is expected during the next couple of days. A turn toward the northwest is forecast to occur late Wednesday night. On the forecast track, the center of Florence will move over the southwestern Atlantic Ocean between Bermuda and the Bahamas Tuesday and Wednesday, and approach the coast of South Carolina or North Carolina on Thursday.
Data from a NOAA Hurricane Hunter aircraft indicate that maximum sustained winds have increased near 140 mph (220 km/h) with higher gusts.  Florence is a category 4 hurricane on the Saffir- Simpson Hurricane Wind Scale.  Further strengthening is anticipated, and Florence is expected to be an extremely dangerous major hurricane through Thursday.
Hurricane-force winds extend outward up to 40 miles (65 km) from the center and tropical-storm-force winds extend outward up to 150 miles (240 km).
The estimated minimum central pressure from NOAA Hurricane Hunter aircraft data is 939 mb (27.73 inches).

HAZARDS AFFECTING LAND ---------------------- SURF:  Swells generated by Florence are affecting Bermuda and portions of the U.S. East Coast.  These swells are likely to cause life-threatening surf and rip current conditions.  Please consult products from your local weather office.


WTNT34 KNHC 102030 TCPAT4
BULLETIN Hurricane Isaac Advisory Number  13 NWS National Hurricane Center Miami FL       AL092018 500 PM AST Mon Sep 10 2018
...ISAAC CONTINUES TO SHOW LITTLE CHANGE IN STRENGTH...

SUMMARY OF 500 PM AST...2100 UTC...INFORMATION ---------------------------------------------- LOCATION...14.4N 45.0W ABOUT 1090 MI...1755 KM E OF THE LESSER ANTILLES MAXIMUM SUSTAINED WINDS...75 MPH...120 KM/H PRESENT MOVEMENT...W OR 270 DEGREES AT 14 MPH...22 KM/H MINIMUM CENTRAL PRESSURE...993 MB...29.33 INCHES

WATCHES AND WARNINGS -------------------- There are no coastal watches or warnings in effect.
Interests in the Lesser Antilles should monitor the progress of Isaac.

DISCUSSION AND OUTLOOK ---------------------- At 500 PM AST (2100 UTC), the center of Hurricane Isaac was located near latitude 14.4 North, longitude 45.0 West.  Isaac is moving toward the west near 14 mph (22 km/h).  A westward motion with a slight increase in forward speed is expected through the end of the week.  On the forecast track, Isaac should move across the Lesser Antilles and into the eastern Caribbean Sea on Thursday.
Maximum sustained winds are near 75 mph (120 km/h) with higher gusts.  Some strengthening is expected over the next day or two. Weakening is forecast to begin by the middle of the week as Isaac approaches the Lesser Antilles.
Isaac is a small hurricane.  Hurricane-force winds extend outward up to 10 miles (20 km) from the center and tropical-storm-force winds extend outward up to 45 miles (75 km).
The estimated minimum central pressure is 993 mb (29.33 inches).

HAZARDS AFFECTING LAND ---------------------- None.

NEXT ADVISORY ------------- Next complete advisory at 1100 PM AST.

Hurricane Helene Advisory Number  14 NWS National Hurricane Center Miami FL       AL082018 500 PM AST Mon Sep 10 2018
...HURRICANE HELENE FORECAST TO TURN NORTHWESTWARD OVER THE EASTERN ATLANTIC IN A DAY OR TWO...

SUMMARY OF 500 PM AST...2100 UTC...INFORMATION ---------------------------------------------- LOCATION...14.9N 31.5W ABOUT 475 MI...765 KM W OF THE SOUTHERNMOST CABO VERDE ISLANDS ABOUT 1620 MI...2605 KM S OF THE AZORES MAXIMUM SUSTAINED WINDS...105 MPH...165 KM/H PRESENT MOVEMENT...WNW OR 290 DEGREES AT 14 MPH...22 KM/H MINIMUM CENTRAL PRESSURE...974 MB...28.77 INCHES

WATCHES AND WARNINGS -------------------- There are no coastal watches or warnings in effect.

DISCUSSION AND OUTLOOK ---------------------- At 500 PM AST (2100 UTC), the eye of Hurricane Helene was located near latitude 14.9 North, longitude 31.5 West. Helene is moving toward the west-northwest near 14 mph (22 km/h). A continued west- northwestward motion with a decrease in forward speed is expected through late Tuesday, followed by a turn toward the northwest and then toward the north-northwest on Wednesday and Thursday.
Maximum sustained winds remain near 105 mph (165 km/h) with higher gusts.  Some strengthening is possible during the next 12 to 24 hours, but gradual weakening should begin thereafter.
Hurricane-force winds extend outward up to 35 miles (55 km) from the center and tropical-storm-force winds extend outward up to 115 miles (185 km).
The estimated minimum central pressure is 974 mb (28.77 inches).

Graphic courtesy National Hurricane Center

Florence 5 pm Mon
Isaac 5 pm Mon 9-10
Hurricane Helene 5 pm Mon
Steve Hall

Steve Hall

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