Much like the week before, cool clear mornings and sunny, warm afternoons were observed on Monday, Tuesday and Wednesday. On Thursday, scattered thunderstorms developed in response to an area of low pressure sliding southeast and becoming nearly stationary offshore. With the upper air still quite cold, hail episodes were noted in many of the storms. Dillon reported golf ball sized hail stones. Additional severe weather was reported on Friday across northeastern counties with brief heavy rains and more large hail. Skies began to clear around midday Saturday. Sunday was one of those picture perfect days displaying a bright blue sky, passing white cumulus clouds and temperatures peaking in the 80's. Statewide temperatures for the period averaged near normal.
PRECIPITATION AND TEMPERATURE DATA
The maximum observed temperature was 90 degrees on May 10 at Orangeburg and Beaufort. The minimum observed temperature was 47 degrees in Cedar Creek on the morning of May 16. The heaviest official 24-hour rainfall was recorded at Charleston AP with 2.45" on May 12. Statewide rainfall for the period averaged 0.2 inches.
Precipitation Period 1999 Deviation* Temperature Location Total Total From Avg. Maximum Minimum Greer 0.15 14.0 5.9B 82 52 Charlotte, NC 0.07 11.9 4.6B 82 50 Columbia 0.05 13.4 5.0B 86 54 Florence FAA 0.05 18.7 3.5A 85 54 Blackville 0.10 17.1 1.0B 89 48 Augusta, GA 0.37 13.9 4.2B 88 47 Beaufort 0.44 12.5 3.5B 90 59 Charleston 3.01 15.7 0.2A 86 57 Myrtle Beach 1.09 17.0 0.3B 83 56*A=Above, B=Below
Note: Weekly rainfall amounts are for the prior 24-hrs ending 7 am Monday through ending 7 am Sunday
ENERGY DEMAND AND AGRICULTURAL ADVISORY
Degree Days Actual May 1-16 Cooling Heating Columbia 62 14 Charleston 76 20 Greenville 29 19The Columbia Airport reports an average 4-inch depth soil temperature of 74 degrees.
RIVERS AND SURF
Most river stages are near normal. Rivers in northeastern counties are at or above flood stage. Surf temperatures at Myrtle Beach and Savannah will average around 72 degrees.