National Weather Service United States Department of Commerce

Severe Thunderstorm Threat From the Central Plains to the Northeast; Extreme HeatRisk for the East Coast

Strong to severe thunderstorms are possible from the central Plains to the Northeast through this evening. Widespread damaging winds are the primary threat but hail and a tornado or two is also possible. Extremely dangerous heat continues across the Eastern U.S. Warm overnight low temperatures will provide little to no relief. Read More >

 

 

VERY LARGE HAIL OCCURRED FROM A SUPERCELL THUNDERSTORM IN THE LATE
AFTERNOON OF TUESDAY...JUNE 23 2015 IN CENTRAL BALTIMORE COUNTY.

AROUND 545 PM...A HAILSTONE WAS FOUND IN THE FRONT YARD OF A
RESIDENCE 2 MILES NORTH-NORTHEAST OF TIMONIUM MARYLAND THAT MEASURED
4.0 INCHES IN DIAMETER...GRAPEFRUIT SIZE. THIS IS ONLY THE 4TH CASE
OF HAIL MEASURING 4 OR MORE INCHES IN MARYLAND FROM RECORDS DATING
BACK TO 1950.

THE LARGEST HAIL ON RECORD IN MARYLAND SINCE 1950 IS 4.5 INCHES...
SOFTBALL SIZE. HAIL THIS SIZE HAS BEEN RECORDED TWICE...ONCE ON
APRIL 28 2002 IN CHARLES COUNTY ASSOCIATED WITH THE SUPERCELL THAT
PRODUCED THE LA PLATA EF4 TORNADO. THE OTHER 4.5 INCH HAILSTONE FELL
ON JUNE 18 1970 IN THE PHOENIX-JACKSONVILLE-COCKEYSVILLE AREA OF
BALTIMORE COUNTY.

THE OTHER KNOWN 4.0 INCH DIAMETER HAIL REPORT IN MARYLAND WAS ON
JULY 31 1999 IN NORTHERN BALTIMORE COUNTY NEAR HEREFORD.