160  
NOUS42 KCHS 201334  
PNSCHS  
GAZ087-088-099>101-114>119-137>141-SCZ040-042>045-047>052-211345-  
 
PUBLIC INFORMATION STATEMENT  
NATIONAL WEATHER SERVICE CHARLESTON SC  
934 AM EDT SAT OCT 20 2018  
 
...REVIEW OF THE NATIONAL WEATHER SERVICE CHARLESTON FROST/FREEZE  
PROGRAM...  
 
THE NATIONAL WEATHER SERVICE IN CHARLESTON WILL ISSUE WATCHES,  
WARNINGS AND ADVISORIES FOR FROST AND FREEZE CONDITIONS ACROSS  
SOUTHEAST SOUTH CAROLINA AND PARTS OF SOUTHEAST GEORGIA NORTH OF  
THE ALTAMAHA RIVER DURING THE GROWING SEASON. THE LOCAL GROWING  
SEASON RUNS FROM MARCH THROUGH NOVEMBER BASED ON CLIMATOLOGY.  
 
THE FOLLOWING ARE THE PRODUCTS WE ISSUED AND THEIR ASSOCIATED  
CRITERIA:  
   
..FREEZE WATCH
 
 
FREEZE WATCHES ARE ISSUED WHEN THERE IS A 50 PERCENT OR GREATER  
PROBABILITY THAT LOW TEMPERATURES WILL DROP TO 32 DEGREES OR  
LOWER DURING THE GROWING SEASON, USUALLY WITHIN 12 TO 48 HOURS.  
   
..FREEZE WARNING
 
 
FREEZE WARNINGS ARE ISSUED WHEN THERE IS AN 80 PERCENT OR GREATER  
PROBABILITY THAT LOW TEMPERATURES WILL DROP TO 32 DEGREES OR  
LOWER DURING THE GROWING SEASON, USUALLY WITHIN 12 TO 24 HOURS.  
   
..FROST ADVISORY
 
 
FROST ADVISORIES ARE ISSUED WHEN THERE IS AN 80 PERCENT OR  
GREATER PROBABILITY THAT CONDITIONS WILL SUPPORT THE DEVELOPMENT  
OF SCATTERED OR WIDESPREAD FROST DURING THE GROWING SEASON.  
ADVISORIES ARE TYPICALLY NOT ISSUED FOR PATCHY FROST.  
 
IF A FREEZE OCCURS ACROSS ALL OF SOUTHEAST SOUTH CAROLINA AND  
NORTHERN PORTIONS OF SOUTHEAST GEORGIA PRIOR TO NOVEMBER 30,  
FROST AND FREEZE PRODUCTS WILL BE DISCONTINUED FOR THE REMAINDER  
OF THE SEASON FOR THE ENTIRE AREA. EVEN IF A FREEZE DOES NOT  
OCCUR PRIOR TO THE END OF NOVEMBER FOR THE ENTIRE AREA, FROST AND  
FREEZE PRODUCTS WILL STILL BE DISCONTINUED BEGINNING DECEMBER  
1 UNTIL THE GROWING SEASON EFFECTIVELY RESUMES AGAIN MARCH 1 NEXT  
YEAR.  
 
THE FOLLOWING ARE MEDIAN FIRST FREEZE DATES FOR SOME LOCATIONS  
ACROSS THE AREA BASED ON DATA FROM 1981 TO 2010:  
   
..SOUTHEAST SOUTH CAROLINA
 
 
YEMASSEE.....................NOVEMBER 1  
ALLENDALE....................NOVEMBER 7  
WALTERBORO...................NOVEMBER 9  
SUMMERVILLE..................NOVEMBER 16  
MCCLELLANVILLE...............NOVEMBER 16  
HAMPTON......................NOVEMBER 18  
CHARLESTON AIRPORT /KCHS/....NOVEMBER 29  
SULLIVANS ISLAND.............DECEMBER 3  
BEAUFORT.....................DECEMBER 8  
DOWNTOWN CHARLESTON..........DECEMBER 24  
   
..SOUTHEAST GEORGIA
 
 
MILLEN.......................NOVEMBER 3  
CLAXTON......................NOVEMBER 18  
BROOKLET.....................NOVEMBER 21  
GLENNVILLE...................NOVEMBER 25  
SAVANNAH AIRPORT /KSAV/......NOVEMBER 28  
FORT STEWART.................DECEMBER 1  
SAPELO ISLAND................DECEMBER 11  
 
A MAP OF MEDIAN LAST FREEZE DATES CAN BE FOUND ON OUR WEBSITE:  
 
HTTP://WWW.WEATHER.GOV/IMAGES/CHS/MISC/MEDIAN_FIRST_FREEZE.PNG  
 

 
 
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