Subtropical storm Beryl has formed off the South Carolina coast. The National Hurricane Center upgraded the low to subtropical Storm status as winds reached 45 mph at the 11pm tropical update. It is currently 305 miles to the east of Charleston, South Carolina. It is moving toward the west. That motion would bring the storm near the Georgia coast later on Sunday. The center would cross along the coast of north Florida. A tropical storm warning is in effect for the Georgia coast and part of the North Florida coast up through the South Carolina coastline.
Expect to see heavy rain moving in along the coastline Sunday. Here in the metro area, we will mainly be dealing with the heat and only a 20% chance of an isolated shower on Saturday and Sunday.
Our rain chances will be a little higher on Monday as more Atlantic moisture moves in. This forecast will depend on the exact track and strength of the storm over the next few days.
It is a subtropical storm because it doesn't have all of the tropical characteristics of a tropical storm. It will still generate wind and heavy rain along the coastline. Beryl is the second named storm so far this year. Alberto formed off the Atlantic coast last weekend. Hurricane season doesn't officially begin until June 1st.
Here is the official advisory from the NHC:
...SUBTROPICAL STORM FORMS IN THE SOUTHEWESTERN ATLANTIC...
...TROPICAL STORM WARNING ISSUED FOR A PORTION OF THE SOUTHEASTERN
SUMMARY OF 1100 PM EDT...0300 UTC...INFORMATION
ABOUT 305 MI...490 KM E OF CHARLESTON SOUTH CAROLINA
MAXIMUM SUSTAINED WINDS...45 MPH...75 KM/H
PRESENT MOVEMENT...N OR 10 DEGREES AT 9 MPH...15 KM/H
MINIMUM CENTRAL PRESSURE...1001 MB...29.56 INCHES
WATCHES AND WARNINGS
CHANGES WITH THIS ADVISORY...
A TROPICAL STORM WARNING HAS BEEN ISSUED ALONG THE SOUTHEASTERN
UNITED STATES COAST...FROM THE VOLUSIA/BREVARD COUNTY LINE IN
NORTHEAST FLORIDA NORTHWARD TO EDISTO BEACH SOUTH CAROLINA
A TROPICAL STORM WATCH HAS BEEN ISSUED FROM NORTH OF EDISTO BEACH
SOUTH TO SOUTH SANTEE RIVER SOUTH CAROLINA
SUMMARY OF WATCHES AND WARNINGS IN EFFECT...
A TROPICAL STORM WARNING IS IN EFFECT FOR...
* VOLUSIA/BREVARD COUNTY LINE FLORIDA TO EDISTO BEACH SOUTH CAROLINA
A TROPICAL STORM WATCH IS IN EFFECT FOR...
* EDISTO BEACH SOUTH TO SOUTH SANTEE RIVER SOUTH CAROLINA
A TROPICAL STORM WARNING MEANS THAT TROPICAL STORM CONDITIONS ARE
EXPECTED SOMEWHERE WITHIN THE WARNING AREA WITHIN 36 HOURS.
A TROPICAL STORM WATCH MEANS THAT TROPICAL STORM CONDITIONS ARE
POSSIBLE WITHIN THE WATCH AREA...GENERALLY WITHIN 48 HOURS.
FOR STORM INFORMATION SPECIFIC TO YOUR AREA...INCLUDING POSSIBLE
INLAND WATCHES AND WARNINGS...PLEASE MONITOR PRODUCTS ISSUED BY
YOUR LOCAL NATIONAL WEATHER SERVICE FORECAST OFFICE.
DISCUSSION AND 48-HOUR OUTLOOK
AT 1100 PM EDT...0300 UTC...THE CENTER OF SUBTROPICAL STORM BERYL
WAS LOCATED NEAR LATITUDE 32.5 NORTH...LONGITUDE 74.8 WEST. THE
STORM IS MOVING TOWARD THE NORTH NEAR 9 MPH...15 KM/H...BUT BERYL
SHOULD BEGIN TO SLOW DOWN OVERNIGHT. A TURN TOWARD THE WEST-
SOUTHWEST OR SOUTHWEST IS EXPECTED ON SATURDAY WITH A GRADUAL
INCREASE IN FORWARD SPEED. ON THE FORECAST TRACK...THE CENTER OF
BERYL SHOULD BE NEAR OR OVER THE SOUTHEASTERN COAST OF THE UNITED
STATES IN THE WARNING AREA ON SUNDAY.
MAXIMUM SUSTAINED WINDS ARE NEAR 45 MPH...75 KM/H...WITH HIGHER
GUSTS. SLIGHT STRENGTHENING IS FORECAST DURING THE NEXT 48
TROPICAL-STORM-FORCE WINDS EXTEND OUTWARD UP TO 140 MILES...220 KM
FROM THE CENTER.