Alert archive / Georgia / Flood Watches in 2007

Flood Watch 3, NWS Charleston, SC

September 1, 20076 counties in Georgia

NWS Charleston, SC issued this flood watch at Sep 1, 2007, 4:38 PM EDT for 6 counties in Georgia. It was in force for 29 hr.

The area

The counties it named.

The facts

Issued: Sep 1, 2007, 4:38 PM EDT (20:38 UTC)
Expired: Sep 2, 2007, 9:57 PM EDT
In force: 29 hr
Issued by: NWS Charleston, SC
Flood severity: None

Counties Bulloch County, GA, Candler County, GA, Effingham County, GA, Evans County, GA, Long County, GA, Tattnall County, GA

The radar

The Charleston,SC radar (KCLX), 89 km from the middle of the area, began a volume at 20:38 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.

The nearest sounding before it

Charleston AFB, SC (KCHS), launched 12:00Z, 8.6 hours before the alert went out and 187 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.

Skew-T log-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

The wind turning with height, colored by layer: ground to 1 km, 1 to 3 km, 3 to 6 km, 6 to 10 km.

Mixed-layer CAPE: 774 J/kg
Mixed-layer CIN: 0 J/kg
Mixed-layer LCL: 479 m above ground
0-6 km bulk shear: 20 kt
0-1 km storm-relative helicity: -56 m²/s²
0-3 km storm-relative helicity: -31 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

What forecasters said that day

The local office's own words before this flood watch went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.

NWS Charleston, SC wrote its last area forecast discussion before this flood watch went out at Sep 1, 4:14 PM EDT, 24 minutes earlier.

Area forecast discussion, Sep 1, 4:14 PM EDT, 24 minutes before

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Hazardous weather outlook, Sep 1, 4:27 PM EDT, 11 minutes before

HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE CHARLESTON SC
427 PM EDT SAT SEP 1 2007

GAZ087-088-SCZ040-042>045-021000-
JENKINS-SCREVEN-ALLENDALE-HAMPTON-INLAND COLLETON-DORCHESTER-
BERKELEY-
427 PM EDT SAT SEP 1 2007

THIS HAZARDOUS WEATHER OUTLOOK IS FOR SOUTHEAST GEORGIA AND
SOUTHEAST SOUTH CAROLINA.

.DAY ONE...TONIGHT.

HEAVY RAIN...THUNDERSTORMS MAY PRODUCE LOCALLY EXCESSIVE RAINFALL
TODAY. REMAIN ALERT FOR FLASH FLOOD WARNINGS AND FLOOD ADVISORIES.

.DAYS TWO THROUGH SEVEN...SUNDAY THROUGH FRIDAY.

HEAVY RAIN...THUNDERSTORMS MAY PRODUCE LOCALLY EXCESSIVE RAINFALL
SUNDAY. FLOOD WATCHES...FLASH FLOOD WARNINGS OR FLOOD ADVISORIES
MAY BE NEEDED.

.SPOTTER INFORMATION STATEMENT...

WEATHER SPOTTERS ARE ENCOURAGED TO REPORT SIGNIFICANT WEATHER
CONDITIONS ACCORDING TO STANDARD OPERATING PROCEDURES.

GAZ099>101-114>119-137>141-SCZ047>051-021000-
CANDLER-BULLOCH-EFFINGHAM-TATTNALL-EVANS-INLAND BRYAN-COASTAL BRYAN-
INLAND CHATHAM-COASTAL CHATHAM-LONG-INLAND LIBERTY-COASTAL LIBERTY-
INLAND MCINTOSH-COASTAL MCINTOSH-INLAND JASPER-BEAUFORT-
COASTAL COLLETON-CHARLESTON-COASTAL JASPER-
427 PM EDT SAT SEP 1 2007

...FLOOD WATCH IN EFFECT THROUGH LATE SUNDAY NIGHT...
...MODERATE RISK OF RIP CURRENTS THROUGH TONIGHT...

THIS HAZARDOUS WEATHER OUTLOOK IS FOR SOUTHEAST GEORGIA AND
SOUTHEAST SOUTH CAROLINA.

.DAY ONE...TONIGHT.

PLEASE LISTEN TO NOAA WEATHER RADIO OR GO TO WEATHER.GOV ON THE
INTERNET FOR MORE INFORMATION ABOUT THE FOLLOWING HAZARDS.

   FLOOD WATCH.

RIP CURRENTS...THERE IS A MODERATE RISK OF RIP CURRENTS ON AREA
BEACHES THROUGH TONIGHT. REFER TO THE SURF ZONE FORECAST FOR
ADDITIONAL INFORMATION.

.DAYS TWO THROUGH SEVEN...SUNDAY THROUGH FRIDAY.

PLEASE LISTEN TO NOAA WEATHER RADIO OR GO TO WEATHER.GOV ON THE
INTERNET FOR MORE INFORMATION ABOUT THE FOLLOWING HAZARDS.

   FLOOD WATCH.

RIP CURRENTS...THERE MAY BE AN ENHANCED RISK OF RIP CURRENTS
ON AREA BEACHES SUNDAY THROUGH LABOR DAY...DUE TO PERSISTENT
ONSHORE WINDS AND SMALL SWELL.

COASTAL FLOODING AND BEACH EROSION...THE COMBINATION OF INCREASING
ONSHORE WINDS...BUILDING SURF AND PERIODS OF HEAVY RAIN MAY
PRODUCE SHALLOW COASTAL FLOODING AND MINOR BEACH EROSION THROUGH
LABOR DAY...ESPECIALLY AROUND THE TIMES OF HIGH TIDE.

.SPOTTER INFORMATION STATEMENT...

WEATHER SPOTTERS ARE ENCOURAGED TO REPORT SIGNIFICANT WEATHER
CONDITIONS ACCORDING TO STANDARD OPERATING PROCEDURES.

AMZ330-350-352-354-370-374-021000-
CHARLESTON HARBOR-
WATERS FROM SOUTH SANTEE RIVER TO EDISTO BEACH SC OUT 20 NM-
WATERS FROM EDISTO BEACH SC TO SAVANNAH GA OUT 20 NM-
WATERS FROM SAVANNAH GA TO ALTAMAHA SOUND GA OUT 20 NM...INCLUDING
GRAYS REEF NATIONAL MARINE SANCTUARY-
WATERS FROM SOUTH SANTEE RIVER SC TO SAVANNAH GA EXTENDING FROM
20 NM TO 40 NM-
WATERS FROM SAVANNAH GA TO ALTAMAHA SOUND GA EXTENDING FROM 20 TO
60 NM-
427 PM EDT SAT SEP 1 2007

THIS HAZARDOUS WEATHER OUTLOOK IS FOR ATLANTIC COASTAL WATERS.

.DAY ONE...TONIGHT.

HEAVY RAIN...THUNDERSTORMS MAY PRODUCE VERY HEAVY
RAIN...OCCASIONALLY REDUCING VISIBILITY TO BELOW 1 NM. STRONGER
THUNDERSTORMS MAY ALSO PRODUCE WIND GUSTS EXCEEDING 25 KNOTS.

.DAYS TWO THROUGH SEVEN...SUNDAY THROUGH FRIDAY.

HEAVY RAIN...THUNDERSTORMS MAY PRODUCE VERY HEAVY RAIN
SUNDAY...OCCASIONALLY REDUCING VISIBILITY TO BELOW 1 NM.

.SPOTTER INFORMATION STATEMENT...

WEATHER SPOTTERS ARE ENCOURAGED TO REPORT SIGNIFICANT WEATHER
CONDITIONS ACCORDING TO STANDARD OPERATING PROCEDURES.

JRJ

In the hours before

Local storm report, Sep 1, 12:19 PM EDT, 4 hours 19 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE CHARLESTON SC
1219 PM EDT SAT SEP 01 2007

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

1159 AM     FLOOD            BEAUFORT                32.43N 80.67W
09/01/2007                   BEAUFORT           SC   LAW ENFORCEMENT

            COUNTY EMERGENCY OPERATIONS CENTER REPORTS MOST OF
            DOWNTOWN BEAUFORT FLOODED.

&&

SEK

Local storm report, Sep 1, 12:22 PM EDT, 4 hours 16 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE CHARLESTON SC
1222 PM EDT SAT SEP 01 2007

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

1159 AM     FLOOD            HILTON HEAD ISLAND      32.22N 80.75W
09/01/2007                   BEAUFORT           SC   LAW ENFORCEMENT

            2 TO 3 FEET STANDING WATER ON HWY 278 NOW CLOSED NEAR
            WEXFORD VILLAGE. HOPE AVE AND LAGOON RD ALSO CLOSED.

&&

SEK

Local storm report, Sep 1, 12:28 PM EDT, 4 hours 10 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE CHARLESTON SC
1228 PM EDT SAT SEP 01 2007

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

1159 AM     FLOOD            6 ESE PORT ROYAL        32.35N 80.60W
09/01/2007                   BEAUFORT           SC   LAW ENFORCEMENT

            ON ST.HELENA ISLAND 2 FEET STANDING WATER ON HWY 21 THE
            SEA ISLAND PARKWAY NOW CLOSED. SEASIDE RD ALSO CLOSED.

&&

SEK

Local storm report, Sep 1, 12:49 PM EDT, 3 hours 49 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE CHARLESTON SC
1249 PM EDT SAT SEP 01 2007

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

1245 PM     FLOOD            2 N SKIDAWAY ISLAND     31.96N 81.05W
09/01/2007                   CHATHAM            GA   PUBLIC

            PUBLIC REPORTED 1.5 FT OF STANDING WATER AT AN UNDERPASS.
            ALSO A MAJOR ROAD IN TOWN IS CLOSED DUE TO HIGH WATER. IT
            IS REPORTED IMPASSABLE BY CAR.

&&

JRL

The office that day

Everything else NWS Charleston, SC issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Sep 1, 2:25 AM EDT	Special Marine Warning	CHS		47 min
Sep 1, 6:38 AM EDT	Areal Flood Advisory	CHS	Bryan, Chatham, Liberty	97 min
Sep 1, 7:52 AM EDT	Areal Flood Advisory	CHS	Chatham	2 hr
Sep 1, 8:17 AM EDT	Flash Flood Warning	CHS	Chatham	103 min
Sep 1, 11:44 AM EDT	Areal Flood Advisory	CHS	Chatham	61 min
Sep 1, 12:06 PM EDT	Flash Flood Warning	CHS	Chatham	6 hr
Sep 1, 5:02 PM EDT	Areal Flood Advisory	CHS	Bryan, Chatham, Liberty, McIntosh	88 min
Sep 1, 5:31 PM EDT	Flash Flood Warning	CHS	Chatham	6 hr
Sep 1, 6:22 PM EDT	Areal Flood Advisory	CHS	Bryan, Liberty, McIntosh	113 min
Sep 1, 7:12 PM EDT	Flash Flood Warning	CHS	Bryan	6 hr
Sep 1, 7:58 PM EDT	Areal Flood Advisory	CHS	Liberty, McIntosh	2 hr
Sep 1, 1:49 AM EDT	Areal Flood Advisory	CHS	Beaufort	63 min
Sep 1, 4:15 AM EDT	Areal Flood Advisory	CHS	Charleston	105 min
Sep 1, 5:56 AM EDT	Areal Flood Advisory	CHS	Berkeley, Charleston	64 min
Sep 1, 8:44 AM EDT	Areal Flood Advisory	CHS	Beaufort	2 hr
Sep 1, 10:41 AM EDT	Areal Flood Advisory	CHS	Beaufort	94 min
Sep 1, 5:53 PM EDT	Flash Flood Warning	CHS	Beaufort	6 hr

Nearby

Flood Watches in Georgia, 2007 Flood Watches in South Carolina, 2007 Every flood watch in 2007

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; radar from the NEXRAD Level II archive.