Alert archive / Georgia / Flash Flood Warnings in 2011
Flash Flood Warning 3, NWS Charleston, SC
NWS Charleston, SC issued this flash flood warning at Jul 14, 2011, 11:52 PM EDT for Bryan County, Chatham County, Georgia. It was in force for 113 min. 3 reports came from inside the area while it was in force.
The area
The outline as issued, with what was reported inside it.
The facts
- Issued
- Jul 14, 2011, 11:52 PM EDT (03:52 UTC)
- Expired
- Jul 15, 2011, 1:45 AM EDT
- In force
- 113 min
- Issued by
- NWS Charleston, SC
- Area
- Storm-based polygon
- Flood severity
- None
Counties Bryan County, GA, Chatham County, GA
The radar
The Charleston,SC radar (KCLX), 74 km from the middle of the area, began a volume at 03:55 UTC, the scan nearest the moment this went out.
Open the radar archive at this moment
The archived warnings, watches and discussions in force at that minute are drawn over the scan, this one among them.
What was reported inside it
| Time | Report | Where | Remark |
|---|---|---|---|
| Jul 15, 12:33 AM EDT | FLASH FLOOD | Whitemarsh Island, GA | NUMEROUS YARDS FLOODED IN WHITEMARSH ISLAND. WATER 2-3 FEET DEEP ON AREA ROADWAYS AND THEY ARE BECOMING IMPASSABLE. CARS FLOODED. |
| Jul 15, 12:38 AM EDT | FLASH FLOOD | 1 Ssw Savannah, GA | PORTIONS OF WATER STREET NEAR 53RD STREET ARE FLOODED. SEVERAL CARS ARE FLOODED. |
| Jul 15, 12:59 AM EDT | HEAVY RAIN 4.24 | 2 Se Montgomery, GA |
Local storm reports filed while the alert was in force, from inside its polygon or its counties.
The nearest sounding before it
Charleston AFB, SC (KCHS), launched 00:00Z, 3.9 hours before the alert went out and 144 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
- 1086 J/kg
- Mixed-layer CIN
- -55 J/kg
- Mixed-layer LCL
- 807 m above ground
- 0-6 km bulk shear
- 16 kt
- 0-1 km storm-relative helicity
- -26 m²/s²
- 0-3 km storm-relative helicity
- 34 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
629
WGUS52 KCHS 150352
FFWCHS
GAC029-051-150545-
/O.NEW.KCHS.FF.W.0003.110715T0352Z-110715T0545Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE CHARLESTON SC
1152 PM EDT THU JUL 14 2011
THE NATIONAL WEATHER SERVICE IN CHARLESTON HAS ISSUED A
* FLASH FLOOD WARNING FOR...
SOUTHEASTERN BRYAN COUNTY IN SOUTHEAST GEORGIA...
CHATHAM COUNTY IN SOUTHEAST GEORGIA...
* UNTIL 145 AM EDT
* AT 1145 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED
VERY HEAVY RAIN OCCURRING ALONG A LINE EXTENDING FROM FORT
MCALLISTER TO WASSAW ISLAND...OR FROM RICHMOND HILL TO WILMINGTON
ISLAND. THE AREA OF HEAVY RAIN WAS NEARLY STATIONARY.
RADAR ESTIMATES UP TO 4 INCHES OF RAIN HAS FALLEN IN SOME AREAS
SINCE 1045 PM. RADAR SHOWS A LARGE AREA OF THUNDERSTORMS
CONTINUING TO DEVELOP AND MOVE OVER THE SAME AREAS. AN ADDITIONAL
2 TO 4 INCHES OF RAIN WILL BE POSSIBLE THROUGH 145 AM. THESE
INTENSE RAINFALL AMOUNTS WILL LIKELY LEAD TO FLASH FLOODING. IN
ADDITION...THE RISK FOR FLASH FLOODING IN THE SAVANNAH METRO
AREA WILL INCREASE AS THESE THUNDERSTORMS MOVE INTO THE CITY.
* LOCATIONS IN THE ADVISORY INCLUDE BUT ARE NOT LIMITED TO...
SKIDAWAY ISLAND...FORT PULASKI NATIONAL MONUMENT...ISLE OF
HOPE...KELLER...SAVANNAH METRO AREA...FORT MCALLISTER...
VERNONBURG...HUNTER ARMY AIRFIELD...GEORGETOWN...RICHMOND HILL...
PRECAUTIONARY/PREPAREDNESS ACTIONS...
IF YOU CAN NOT SEE THE ROAD DUE TO INTENSE NIGHT RAINFALL...YOU
SHOULD NOT DRIVE.
TO REPORT FLOODING...CONTACT THE NATIONAL WEATHER SERVICE IN
CHARLESTON TOLL FREE AT 1-888-383-2024.
&&
LAT...LON 3186 8134 3197 8143 3213 8114 3210 8111
3211 8110 3210 8109 3210 8110 3208 8110
3209 8099 3204 8092 3204 8085 3202 8083
3197 8085 3183 8103 3178 8105 3171 8113
$$3 follow-up statements
800
WGUS72 KCHS 150426
FFSCHS
FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE CHARLESTON SC
1226 AM EDT FRI JUL 15 2011
GAC029-051-150545-
/O.CON.KCHS.FF.W.0003.000000T0000Z-110715T0545Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
BRYAN GA-CHATHAM GA-
1226 AM EDT FRI JUL 15 2011
...A FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 145 AM EDT FOR
CHATHAM AND SOUTHEASTERN BRYAN COUNTIES...
AT 1226 AM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUED TO
INDICATE AREAS OF HEAVY RAIN MOVING SLOWLY INLAND ACROSS MUCH OF
EASTERN CHATHAM AND BRYAN COUNTIES. THE MOST INTENSE RAIN EXTENDED
FROM WHITEMARSH ISLAND AND WILMINGTON ISLAND SOUTH TO SKIDAWAY ISLAND
AND FORT MCALLISTER. RADAR ESTIMATES BETWEEN 3 AND 5 INCHES OF
RAIN HAS FALLEN IN SOME AREAS OVER THE PAST 1.5 HOURS WITH AS MUCH
AS 5 TO 8 INCHES BEING ESTIMATED BETWEEN FORT MCALLISTER AND
SKIDAWAY ISLAND. ADDITIONAL HEAVY RAIN WILL LEAD TO FLASH FLOODING.
HEAVY RAINS ARE ALSO MOVING INTO THE SAVANNAH METRO AREA...SO THE
RISK FOR FLASH FLOODING IN THE METRO AREA ITSELF WILL CONTINUE
TO INCREASE.
FLASH FLOODING IS EXPECTED IN AND AROUND FORT MCALLISTER...FORT
PULASKI NATIONAL MONUMENT...ISLE OF HOPE...KELLER...MONTGOMERY...
RICHMOND HILL...SANDFLY...SAVANNAH...SAVANNAH HISTORIC DISTRICT...
SKIDAWAY ISLAND...THUNDERBOLT...TYBEE ISLAND...VERNONBURG...
WASSAW ISLAND...WHITE BLUFF...WHITEMARSH ISLAND...WILMINGTON
ISLAND...WINDSOR FOREST AND RIVERSIDE.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
HOMES AND BUSINESSES MAY BEGIN TO FLOOD DUE TO THE TORRENTIAL
RAINFALL. IF YOU ARE IN A LOW-LYING AREA...BE PROACTIVE. RAISE
SENSITIVE ITEMS OFF THE GROUND BEFORE FLOODING BEGINS.
TO REPORT SIGNIFICANT FLOODING...PLEASE CONTACT THE NATIONAL WEATHER
SERVICE IN CHARLESTON TOLL FREE AT 1-888-383-2024 OR EMAIL YOUR
REPORTS TO CHS.SKYWARN@NOAA.GOV. REPORTS CAN ALSO BE SENT THROUGH
TWITTER USING #WXREPORT.
&&
LAT...LON 3186 8134 3197 8143 3213 8114 3210 8111
3211 8110 3210 8109 3210 8110 3208 8110
3209 8099 3204 8092 3204 8085 3202 8083
3197 8085 3183 8103 3178 8105 3171 8113
$$246
WGUS72 KCHS 150455
FFSCHS
FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE CHARLESTON SC
1255 AM EDT FRI JUL 15 2011
GAC029-150504-
/O.CAN.KCHS.FF.W.0003.000000T0000Z-110715T0545Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
BRYAN GA-
1255 AM EDT FRI JUL 15 2011
...THE FLASH FLOOD WARNING HAS BEEN CANCELLED FOR SOUTHEASTERN BRYAN
COUNTY...
LAT...LON 3188 8117 3190 8117 3190 8119 3193 8122
3206 8126 3211 8115 3210 8109 3208 8110
3209 8099 3204 8092 3203 8084 3202 8083
3197 8085 3183 8103 3178 8105
$$
GAC051-150545-
/O.CON.KCHS.FF.W.0003.000000T0000Z-110715T0545Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
CHATHAM GA-
1255 AM EDT FRI JUL 15 2011
...A FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 145 AM EDT FOR
CHATHAM COUNTY...
AT 1252 AM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUED TO
INDICATE VERY HEAVY RAIN EXTENDING FROM DOWNTOWN SAVANNAH TO
SKIDAWAY ISLAND. RADAR ESTIMATES BETWEEN 3 AND 8 INCHES OF RAIN HAS
FALLEN ACROSS MUCH OF CENTRAL AND EASTERN CHATHAM COUNTIES SINCE
LATE THURSDAY EVENING. FLASH FLOODING HAS ALREADY BEEN REPORTED
IN PARTS OF THE SAVANNAH METRO AREA AS WELL AS ON WHITEMARSH ISLAND.
THE RISK FOR FLASH FLOODING CONTINUES.
FLASH FLOODING IS EXPECTED IN AND AROUND FORT PULASKI NATIONAL
MONUMENT...ISLE OF HOPE...MONTGOMERY...OSSABAW SOUND...SANDFLY...
SAVANNAH...SAVANNAH HISTORIC DISTRICT...SKIDAWAY ISLAND...
THUNDERBOLT...TYBEE ISLAND...VERNONBURG...WASSAW ISLAND...WHITE
BLUFF...WHITEMARSH ISLAND...WILMINGTON ISLAND...WINDSOR FOREST AND
RIVERSIDE.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
THE MAJORITY OF FLOOD DEATHS ARE DUE TO PEOPLE DRIVING INTO WATER OF
UNKNOWN DEPTH. JUST ONE FOOT OF FLOWING WATER IS POWERFUL ENOUGH TO
SWEEP VEHICLES OFF THE ROAD. EVEN MODERN SPORT UTILITY VEHICLES ARE
VULNERABLE TO FLOODING. TO AVOID THE RISK OF DEATH...FIND AN
ALTERNATE ROUTE IF THE ROAD IS FLOODED.
TO REPORT SIGNIFICANT FLOODING...PLEASE CONTACT THE NATIONAL WEATHER
SERVICE IN CHARLESTON TOLL FREE AT 1-888-383-2024 OR EMAIL YOUR
REPORTS TO CHS.SKYWARN@NOAA.GOV. REPORTS CAN ALSO BE SENT THROUGH
TWITTER USING #WXREPORT.
&&
LAT...LON 3188 8117 3190 8117 3190 8119 3193 8122
3206 8126 3211 8115 3210 8109 3208 8110
3209 8099 3204 8092 3203 8084 3202 8083
3197 8085 3183 8103 3178 8105
$$248
WGUS72 KCHS 150535
FFSCHS
FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE CHARLESTON SC
135 AM EDT FRI JUL 15 2011
GAC051-150545-
/O.EXP.KCHS.FF.W.0003.000000T0000Z-110715T0545Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
CHATHAM GA-
135 AM EDT FRI JUL 15 2011
...THE FLASH FLOOD WARNING WILL EXPIRE AT 145 AM EDT FOR FOR CHATHAM
COUNTY...
ALTHOUGH THE SIGNIFICANT FLOODING HAS ENDED...DRAINAGE SYSTEMS AND
CULVERTS WILL REMAIN FULL. PONDING WATER WILL PERSIST IN LOW-LYING
AREAS AND MAY POSE A HAZARD TO MOTORISTS. STAY TUNED TO NOAA WEATHER
RADIO ALL-HAZARDS FOR THE LATEST WEATHER INFORMATION.
TO REPORT SIGNIFICANT FLOODING...PLEASE CONTACT THE NATIONAL WEATHER
SERVICE IN CHARLESTON TOLL FREE AT 1-888-383-2024 OR EMAIL YOUR
REPORTS TO CHS.SKYWARN@NOAA.GOV. REPORTS CAN ALSO BE SENT THROUGH
TWITTER USING #WXREPORT.
LAT...LON 3188 8117 3190 8117 3190 8119 3193 8122
3206 8126 3211 8115 3210 8109 3208 8110
3209 8099 3204 8092 3203 8084 3202 8083
3197 8085 3183 8103 3178 8105
$$The office that day
Everything else NWS Charleston, SC issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 14, 11:10 PM EDT | Special Marine Warning | CHS | 77 min | |
| Jul 14, 11:27 PM EDT | Areal Flood Advisory | CHS | Bryan, Chatham | 93 min |
| Jul 15, 1:06 AM EDT | Special Marine Warning | CHS | 81 min | |
| Jul 15, 2:37 AM EDT | Flash Flood Watch | CHS | Bulloch, Candler, Effingham, Evans, Long, Tattnall | 20 hr |
| Jul 15, 3:37 AM EDT | Special Marine Warning | CHS | 83 min | |
| Jul 15, 8:43 AM EDT | Special Weather Statement | CHS | McIntosh | 47 min |
| Jul 15, 9:35 AM EDT | Areal Flood Advisory | CHS | McIntosh | 115 min |
| Jul 15, 11:04 AM EDT | Areal Flood Advisory | CHS | Long, McIntosh | 2 hr |
| Jul 15, 11:44 AM EDT | Areal Flood Advisory | CHS | McIntosh | 108 min |
| Jul 15, 3:45 PM EDT | Coastal Flood Advisory | CHS | 7 hr | |
| Jul 15, 3:46 PM EDT | Small Craft Advisory | CHS | 52 hr | |
| Jul 15, 5:03 PM EDT | Areal Flood Advisory | CHS | Bryan, Chatham, Liberty | 57 min |
| Jul 15, 5:43 PM EDT | Flash Flood Warning | CHS | Bryan, Chatham, Liberty | 60 min |
| Jul 15, 6:15 PM EDT | Areal Flood Advisory | CHS | Long, Tattnall | 55 min |
| Jul 15, 7:13 PM EDT | Areal Flood Advisory | CHS | Chatham | 62 min |
Nearby
Flash Flood Warnings in Georgia, 2011Every flash flood warning in 2011
Sources
The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.