Alert archive / South Carolina / Severe Thunderstorm Warnings in 1990
Severe Thunderstorm Warning 23, NWS Charleston, SC
NWS Charleston, SC issued this severe thunderstorm warning at Sep 3, 1990, 7:24 PM EDT for Colleton County, South Carolina. It was in force for 66 min.
The area
The counties it named.
The facts
- Issued
- Sep 3, 1990, 7:24 PM EDT (23:24 UTC)
- Expired
- Sep 3, 1990, 8:30 PM EDT
- In force
- 66 min
- Issued by
- NWS Charleston, SC
- Area
- Whole counties
County Colleton County, SC
The radar
The WSR-88D network and its archive begin in 1991, so there is no radar volume for this alert.
The nearest sounding before it
Charleston AFB, SC (KCHS), launched 12:00Z, 11.4 hours before the alert went out and 61 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
- 53 J/kg
- Mixed-layer CIN
- -235 J/kg
- Mixed-layer LCL
- 1468 m above ground
- 0-6 km bulk shear
- 16 kt
- 0-1 km storm-relative helicity
- 90 m²/s²
- 0-3 km storm-relative helicity
- 96 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
000 TTAA00 KCHS 032334 COR SVRCHS SCC029-040030- BULLETIN - IMMEDIATE BROADCAST REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE CHARLESTON SC 724 PM EDT MON SEP 3 1990 THE NATIONAL WEATHER SERVICE IN CHARLESTON HAS ISSUED A SEVERE THUNDERSTORM WARNING EFFECTIVE UNTIL 830 PM EDT FOR PEOPLE IN THE FOLLOWING LOCATION... IN SOUTH CAROLINA ...COLLETON COUNTY THIS INCLUDES THE COMMUNITIES OF JACKSONBORO AT 725 EDT RADAR INDICATED A SEVERE THUNDERSTORM 25 MILES SOUTHWEST OF CHARLESTON OR JUST SOUTH OF JACKSONBORO MOVING TO THE SOUTH AT 25 MPH. WHEN THUNDERSTORMS ARE OCCURRING...PEOPLE SHOULD MOVE INSIDE A STRONG BUILDING. DO NOT STAND BY WINDOWS. DON'T USE TELEPHONES OR ELECTRICAL APPLIANCES UNLESS IN AN EMERGENCY UNTIL THE STORM HAS PASSED. MOTORISTS SHOULD NOT DRIVE INTO LOW WATER CROSSINGS. IF YOU ARE CAUGHT OUTSIDE...SEEK SHELTER FROM THE WEATHER IN A STRONG BUILDING. DAMAGING WIND...LARGE HAIL...VERY HEAVY RAIN... AND PDEADLY LIGHTNING ARE ALL POSSIBLE IN SEVERE THUNDERSTORMS. STAY INSIDE AWAY FROM WINDOWS UNTIL THE STORM HAS PASSED.
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, Sep 3, 4:44 PM EDT, 2 hours 40 minutes before
SCZ007-008-310350- SPECIAL WEATHER STATEMENT AND RADAR SUMMARY NATIONAL WEATHER SERVICE CHARLESTON SC 445 PM EDT MON SEP 03 1990 ...STRONG THUNDERSTORMS ARE MOVING ALONG THE COAST INTO CHARLESTON COUNTY... AT 4.25 PM EDT...INTENSE THUNDERSTORMS WERE OVER THE SANTEE RIVER AND MC CLELLANVILLE...35 TO 45 MILES NORTHEAST OF CHARLESTON. OTHER SHOWERS AND THUNDERSTORMS WERE FROM WILMINGTON NORTH CAROLINA TO SAVANNAH GEORGIA...AND WERE BEGINNING OVER THE CENTRAL MIDLANDS. THESE STORMS MAY CONTAIN VERY HEAVY RAIN...POSSIBLE SMALL HAIL...GUSTY WINDS AND FREQUENT LIGHTNING. PERSONS SHOULD BE ALERT TO FAST CHANGING CONDITIONS...ESPECIALLY URBAN AND SMALL STREAM FLOODING. STAY TUNED TO NOAA WEATHER RADIO...LOCAL RADIO...AND TV FOR FURTHER DEVELOPMENTS. IANNELLI
Special weather statement, Sep 3, 5:44 PM EDT, 1 hour 40 minutes before
SCZ007-008-310350- SPECIAL WEATHER STATEMENT AND RADAR SUMMARY NATIONAL WEATHER SERVICE CHARLESTON SC 445 PM EDT MON SEP 03 1990 ...STRONG THUNDERSTORMS ARE MOVING ALONG THE COAST... AT 5.25 PM EDT...INTENSE THUNDERSTORMS WERE JUST OFFSHORE 28 MILES EAST OF CHARLESTON...NEAR BULLS BAY...AND 85 MILES NORTH OF CHARLESTON. SHOWERS AND THUNDERSTORMS CONTINUE TO DEVELOPE ALONG COASTAL NORTH CAROLINA AND SOUTH CAROLINA. THESE STORMS MAY CONTAIN VERY HEAVY RAIN...SMALL HAIL...GUSTY WINDS AND FREQUENT LIGHTNING. PERSONS SHOULD BE ALERT TO FAST CHANGING CONDITIONS ...ESPECIALLY URBAN AND SMALL STREAM FLOODING AND BOATERS ALONG NORTH COASTAL SOUTH CAROLINA. STAY TUNED TO NOAA WEATHER RADIO...LOCAL RADIO...AND TV FOR FURTHER DEVELOPMENTS. IANNELLI
Special weather statement, Sep 3, 6:53 PM EDT, 31 minutes before
SCZ007-008-310350- SPECIAL WEATHER STATEMENT AND RADAR SUMMARY NATIONAL WEATHER SERVICE CHARLESTON SC 445 PM EDT MON SEP 03 1990 ...VERY INTENSE THUNDERSTORMS ARE DEVELOPING ALONG THE COASTAL COUNTIES... AT 6.32 PM EDT...A VERY INYENSE THUNDERSTORM WAS OBSERVED JUST OVER NORTH/SOUTH CAROLINA BORDER...ABOUT 20 MILES NORTH OF CRESENT BEACH. OTHER INTENSE THUNDERSTORMS WERE 19 MILES SOUTH OF CHARLEATON...BETWEEN HEMIMNGWAY AND FLORENCE AND OVER SANTEE. SHOWERS AND THUNDERSTORMS WERE CONTINUING FROM CAPE FEAR NORTH CAROLINA TO BEAUFORT SOUTH CAROLINA. ALL PREIPITATION WAS MOVING SOUTH AT 25 TO 30 MILES AN HOUR. THESE STORMS MAY CONTAIN VERY HEAVY RAIN...SMALL HAIL...GUSTY WINDS AND FREQ#UENT LIGHTNING. PERSONS SHOULD BE ALERT TO FAST CHANGING CONDITIONS ...ESPECIALLY URBAN AND SMALL STREAM FLOODING AND BOATERS ALONG NORTH COASTAL SOUTH CAROLINA. IANNELLI
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; the sounding from the Mesonet's radiosonde archive.