Alert archive / South Carolina / Severe Thunderstorm Warnings in 1990
Severe Thunderstorm Warning 12, NWS Charleston, SC
NWS Charleston, SC issued this severe thunderstorm warning at Jul 1, 1990, 9:03 PM EDT for Dorchester County, South Carolina. It was in force for 57 min. 1 report came from inside the area while it was in force.
The area
The counties it named, with what was reported inside it.
The facts
- Issued
- Jul 1, 1990, 9:03 PM EDT (01:03 UTC)
- Expired
- Jul 1, 1990, 10:00 PM EDT
- In force
- 57 min
- Issued by
- NWS Charleston, SC
- Area
- Whole counties
County Dorchester County, SC
The radar
The WSR-88D network and its archive begin in 1991, so there is no radar volume for this alert.
What was reported inside it
| Time | Report | Where | Remark |
|---|---|---|---|
| Jul 1, 9:30 PM EDT | Hail 0.75 | Dorchester, SC |
NCEI Storm Data entries that began inside the alert's area while it was in force. Before 2003 the local storm report archive is thin, so this is the record of what happened rather than what was phoned in. Storm Data before 1996 records only tornadoes, thunderstorm wind and hail.
The nearest sounding before it
Charleston AFB, SC (KCHS), launched 00:00Z, 1.1 hours before the alert went out and 43 km from the middle of its area. This is the routine balloon launch nearest before it, the air the forecaster had in hand, not a measurement taken for the alert.
- Mixed-layer CAPE
- 0 J/kg
- Mixed-layer CIN
- No buoyant parcel
- Mixed-layer LCL
- NaN m above ground
- 0-6 km bulk shear
- 17 kt
- 0-1 km storm-relative helicity
- 50 m²/s²
- 0-3 km storm-relative helicity
- 147 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 7.0
The text
As transmitted, in the capitals the NWS used until 2016.
000 TTAA00 KCHS 020110 SVRCHS SCC035-020200- BULLETIN - IMMEDIATE BROADCAST REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE CHARLESTON SC 903 PM EDT SUN JUL 1 1990 THE NATIONAL WEATHER SERVICE IN CHARLESTON HAS ISSUED A SEVERE THUNDERSTORM WARNING EFFECTIVE UNTIL 1000 PM EDT FOR PEOPLE IN THE FOLLOWING LOCATION... IN SOUTH CAROLINA ...DORCHESTER COUNTY THIS INCLUDES THE COMMUNITIES OF REEVESVILLE AND ST. GEORGE AT 905PM EDT RADAR INDICATED A SEVERE THUNDERSTORM 10 MILES NORTHWEST OF THE CITY OF ST. GEORGE SOUTH CAROLINA MOVING TOWARDS THE SOUTHEAST AT 40 MILES AN HOUR. SEVERE THUNDERSTORMS PRODUCE DAMAGING WIND IN EXCESS OF 55 MPH...DESTRUCTIVE HAIL...DEADLY LIGHTNING...A<ND VERY HEAVY RAIN. FOR YOUR PROTECTION MOVE TO AN INTERIOR ROOM ON THE LOWEST FLOOR OF YOUR HOME OR BUSINESS. HEAVY RAINS FLOOD ROADS QUICKLY SO DON'T DRIVE INTO AREAS WHERE WATER COVERS THE ROAD.
What forecasters said that day
The local office's own words before this severe thunderstorm warning went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.
In the hours before
Special weather statement, Jul 1, 4:50 PM EDT, 4 hours 13 minutes before
SCZ007-008-2722140 SPECIAL WEATHER STATEMENT AND RADAR SUMMARY NATIONAL WEATHER SERVICE CHARLESTON SC 440 PM EDT SUN JUL 1 1990 A SEVERE THUNDERSTORM WATCH IS IN EFFECT UNTIL 11 PM EDT FOR THE FOLLOWING COASTAL COUNTIES OF SOUTH CAROLINA...HORRY...GEORGETOWN... WILLIAMSBURG...BERKELEY...DORCHESTER...COLLETON...AND HAMPTON. AT 4.30 PM...SHOWERS AND THUNDERSTORMS WERE OCCURRING OVER THE PIEDMONT AND NORTHERN MIDLANDS OF SOUTH CAROLINA AND NEARBY A.REAS OF NORTH CAROLINA. THUNDERSTORMS WITH HEAVY RAIN WERE IN THE AREA JUST TO THE NORTH OF FLORENCE AND ABOUT 20 MILES NORTH OF SUMTER. MOVEMENT WAS TOWARD THE EAST-SOUTHEAST AROUND 25 MILES AN HOUR. RBS
Special weather statement, Jul 1, 5:47 PM EDT, 3 hours 16 minutes before
SCZ007-008-012240 SPECIAL WEATHER STATEMENT AND RADAR SUMMARY NATIONAL WEATHER SERVICE CHARLESTON SC 540 PM EDT SUN JUL 1 1990 A SEVERE THUNDERSTORM WATCH IS IN EFFECT UNTIL 11 PM EDT FOR THE FOLLOWING COASTAL COUNTIES OF SOUTH CAROLINA...HORRY...GEORGETOWN... WILLIAMSBURG...BERKELEY...DORCHESTER...COLLETON...AND HAMPTON. NUMEROUS SHOWERS AND THUNDERSTORMS WERE OCCURRING OVER PIEDMONT AND NORTHERN MIDLANDS OF SOUTH CAROLINA EXTENDING INTO NEARBY AREAS OF NORTH CAROLINA. THUNDERSTORMS WITH HEAVY RAIN WERE IN THE AREA JUST JUST TO THE NORTH OF FLORENCE AND IN THE VICINITY OF CHESTERFIELD. SHOWERS AND THUNDERSTORMS HAD DEVELOPED DURING THE PAST HOUR OVER COASTAL GEORGIA JUST TO THE SOUTH OhF SAVANNAH. MOVEMENT WAS TOWARD THE EAST-SOUTHEAST AROUND 25 MILES AN HOUR. RBS
Special weather statement, Jul 1, 6:45 PM EDT, 2 hours 18 minutes before
SCZ007-008-012340 SPECIAL WEATHER STATEMENT AND RADAR SUMMARY NATIONAL WEATHER SERVICE CHARLESTON SC 640 PM EDT SUN JUL 1 1990 A SEVERE THUNDERSTORM WATCH IS IN EFFECT UNTIL 11 PM EDT FOR THE FOLLOWING COASTAL COUNTIES OF SOUTH CAROLINA...HORRY...GEORGETOWN... WILLIAMSBURG...BERKELEY...DORCHESTER...COLLETON...AND HAMPTON. NUMEROUS SHOWERS AND THUNDERSTORMS WERE OCCURRING OVER PIEDMONT AND NORTHERN MIDLANDS OF SOUTH CAROLINA EXTENDING INTO THE EASTERN HALF OF NORTH CAROLINA. THUNDERSTORMS WITH HEAVY RAIN WERE IN THE AREA TO THE NORTHEAST OF FLORENCE NEAR DILLON AND IN THE VICINITY OF CAMDEN. SHOWERS AND THUNDERSTORMS WERE ALSO OCCURRING ALONG THE LOWER COASTAL SECTIONS OF SOUTH CAROLINA AND COASTAL PLAINS OF GEROGIA. MOVEMENT WAS TOWARD THE EAST-SOUTHEAST AROUND 25 MILES AN HOUR. RBS
Special weather statement, Jul 1, 7:50 PM EDT, 1 hour 13 minutes before
SCZ007-008-020040 SPECIAL WEATHER STATEMENT AND RADAR SUMMARY NATIONAL WEATHER SERVICE CHARLESTON SC 740 PM EDT SUN JUL 1 1990 A SEVERE THUNDERSTORM WATCH IS IN EFFECT UNTIL 11 PM EDT FOR THE FOLLOWING COASTAL COUNTIES OF SOUTH CAROLINA...HORRY...GEORGETOWN... WILLIAMSBURG...BERKELEY...DORCHESTER...COLLETON...AND HAMPTON. A 40 MILE WIDE BAND OF SHOWERS AND THUNDERSTORMS CONTINUED TO MOVE SOUTHEASTWARD THROUGH THE SOUTH CAROLINA MIDLANDS. AT 7.40 PM EDT THE SHOWERS AND THUNDERSTORMS FROM JUST NORTHEAST OF AUGUSTA THROUGH THE SUMTER AND FLORENCE AREA AND BEYOND THE NORTH CAROLINA STATE LINE. THUNDERSTORMS WITH HEAVY RAIN WERE SOUTHEAST OF SUMTER NEAR MANNING AS WELLAS...JUST TO SOUTH AND EAST OF COLUMBIA. SHOWERS AND THUNDERSTORMS WERE ALSO OCCURRING ALONG THE LOWER COASTAL SECTIONS OF SOUTH CAROLINA AND COASTAL PLAINS OF GEROGIA. A THUNDERSTORM WITH HEAVY RAIN WAS NOTED NEAR THE SAVANNAH RIVER ENTERANCE. RBS
Special weather statement, Jul 1, 8:40 PM EDT, 23 minutes before
SCZ007-008-020140 SPECIAL WEATHER STATEMENT AND RADAR SUMMARY NATIONAL WEATHER SERVICE CHARLESTON SC 835 PM EDT SUN JUL 1 1990 A SEVERE THUNDERSTORM WATCH IS IN EFFECT UNTIL 11 PM EDT FOR THE FOLLOWING COASTAL COUNTIES OF SOUTH CAROLINA...HORRY...GEORGETOWN... WILLIAMSBURG...BERKELEY...DORCHESTER...COLLETON...AND HAMPTON. A LARGE AREA OF THUNDERSTORMS WAS OCCURRING OVER THE MIDLANDS ANS UPPER COASTAL PLAINS OF SOUTH CAROLINA. THUNDERSTORMS WITH VERY HEAVY RAIN WEE ALONG THE COAST NEAR GEORGETOWN AND IN THE AREA BETWEEN CHARLESTON AND COLUMBIA NEAR THE TOWN OF SANTEE. SHOWERS AND THUNDERSTORMS WERE ALSO OCCURRING ALONG THE LOWER COASTAL SECTIONS OF SOUTH CAROLINA AND COASTAL PLAINS OF GEROGIA. A THUNDERSTORM WITH HEAVY RAIN WAS NOTED NEAR THE SAVANNAH RIVER ENTERANCE. MOVEMENT WAS TOWARD THE SOUTHEAST AROUND 40 MILES AN HOUR. RBS
The office that day
Everything else NWS Charleston, SC issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 1, 8:41 PM EDT | Severe Thunderstorm Warning | CHS | Berkeley | 64 min |
Nearby
Severe Thunderstorm Warnings in South Carolina, 1990Every severe thunderstorm warning in 1990
Sources
The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; verification from NCEI's Storm Data; the sounding from the Mesonet's radiosonde archive.