Alert archive / South Carolina / Flash Flood Warnings in 1992
Flash Flood Warning 1, NWS Charleston, SC
NWS Charleston, SC issued this flash flood warning at Jun 12, 1992, 9:51 AM EDT for Dorchester County, South Carolina. It was in force for 4 hr.
The area
The counties it named.
The facts
- Issued
- Jun 12, 1992, 9:51 AM EDT (13:51 UTC)
- Expired
- Jun 12, 1992, 2:00 PM EDT
- In force
- 4 hr
- Issued by
- NWS Charleston, SC
- Area
- Whole counties
County Dorchester County, SC
The nearest sounding before it
Charleston AFB, SC (KCHS), launched 12:00Z, 1.9 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
- 525 m above ground
- 0-6 km bulk shear
- 20 kt
- 0-1 km storm-relative helicity
- 31 m²/s²
- 0-3 km storm-relative helicity
- 175 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.3
The text
As transmitted, in the capitals the NWS used until 2016.
000 TTAA00 KCHS 121351 FFWCHS SCC035-121800- BULLETIN - EBS ACTIVATION REQUESTED FLASH FLOOD WARNING NATIONAL WEATHER SERVICE CHARLESTON SC 951 AM EDT FRI JUN 12 1992 IN SOUTH CAROLINA ...DORCHESTER COUNTY FLOOD WARNING NATIONAL WEATHER SERVICE OFFICE CHARLESTON SC 0945 AM EDT FRI JUN 12 1992 RUNOFF FROM THE PROLONGED HEAVY RAIN FALL IN THE SUMMERVILLE... KNITSVILLE AND LADSON AREAS WILL CAUSE SMALL STREAMS TO OVERFLOW THEIR BANKS IN THE LOWER PART OF DORCHESTER COUNTY AROUND THE OAKBROOK AREA AND ON HIWAY 78. OVERNIGHT RAINFALL AMOUNTS FROM 2.12 INCHES AT SUMMERVILLE TO OVCER 4 INCHES /4.05/ AT THE CRESTWOOD SUBDIVISION ON BACON BRIDGE ROAD. HEAVY SHOWERS CONTINUE TO DEVELOP IN THIS AREA AND THEN MOVE SLOWLY EASTWARD. THERE HAVE BEEN REPORTS OF SOME FLOODING IN SUBDIVISONS...MAINLY THOSE IN LOW LYING AREAS. IF YOU LIVE OR WORK ALONG STREAMS IN THE SOUTH PART OF DORCHESTER COUNTY...TAKE NECESSARY PRECAUTIONS NOW. STAY TUNED TO YOUR LOCAL RADIO...TV OR NOAA WEATHER RADIO. ADDITIONAL STATEMENTS WILL BE ISSUED HOURLY. DO NOT DRIVE YOUR VEHICLE INTO AREAS WHERE THE WATER COVERS THE ROADWAY. THE WATER DEPTH MAY BE TOO GREAT TO ALLOW YOUR CAR TO CROSS SAFELY. VEHICLES CAUGHT IN RISING WATER SHOULD BE ABANDONED QUICKLY. MOVE TO HIGHER GROUND. SIMPSON
What forecasters said that day
The local office's own words before this flash flood 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, Jun 12, 9:49 AM EDT, 2 minutes before
SCZALL-121430- SPECIAL WEATHER STATEMENT AND RADAR SUMMARY NATIONAL WEATHER SERVICE CHARLESTON SC 930 AM EDT FRI JUN 12 1992 ...THUNDERSTORMS WITH VERY HEAVY RAINFALL IN THE SUMMERVILLE AREA... VERY HEAVY RAINFALL CONTINUED FROM SUMMERVILLE TO HUGER SOUTH CAROLINA. PERSONS IN THIS VICINITY SHOULD KEEP ALERT FOR OVERFLOWING SMALL STREAMS AND DRAINAGE DITCHES. MOTORISTS TAKE EXTRA CARE AND ALLOW FOR EXTRA TIME TRAVELING...FOR ROADWAYS AND DITCHES MAY FLOOD IN LOW LYING AREAS. DURING THE PAST 24 HOURS...RAINFALL TOTALS IN THE SUMMERVILLE AREA RANGED FROM 2 TO 5 INCHES. ELSEWHERE...MOSTLY LIGHT RAIN WAS OVER MUCH OF SOUTH CAROLINA AND EXTENDED INTO EASTERN GEORGIA. MOVEMENT WAS TO THE( EAST AT 25 MILES AN HOUR. RAO
The office that day
Everything else NWS Charleston, SC issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jun 12, 2:53 PM EDT | Flash Flood Warning | CHS | Berkeley, Dorchester | 9 hr |
Nearby
Flash Flood Warnings in South Carolina, 1992Every flash flood warning in 1992
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.