Alert archive / Georgia / Flood Watches in 2012
Flood Watch 1, NWS Atlanta, GA
NWS Atlanta, GA issued this flood watch at Jan 20, 2012, 12:02 PM EST for 6 counties in Georgia. It took effect at Jan 21, 2012, 1:00 AM EST. It was in force for 10 hr.
The area
The counties it named.
The facts
- Issued
- Jan 20, 2012, 12:02 PM EST (17:02 UTC)
- In effect from
- Jan 21, 2012, 1:00 AM EST
- Expired
- Jan 21, 2012, 11:07 AM EST
- In force
- 10 hr
- Issued by
- NWS Atlanta, GA
- Flood severity
- None
Counties Catoosa County, GA, Chattooga County, GA, Dade County, GA, Murray County, GA, Walker County, GA, Whitfield County, GA
The radar
The Northeast Alabama radar (KHTX), 86 km from the middle of the area, began a volume at 17:05 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
Peachtre/Fal Fld, GA (KFFC), launched 12:00Z, 5.0 hours before the alert went out and 166 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
- 678 m above ground
- 0-6 km bulk shear
- 51 kt
- 0-1 km storm-relative helicity
- 284 m²/s²
- 0-3 km storm-relative helicity
- 270 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
866 WGUS62 KFFC 201702 FFAFFC URGENT - IMMEDIATE BROADCAST REQUESTED FLOOD WATCH NATIONAL WEATHER SERVICE PEACHTREE CITY GA 1202 PM EST FRI JAN 20 2012 GAZ001>005-011-210115- /O.NEW.KFFC.FA.A.0001.120121T0600Z-120122T1200Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ DADE-WALKER-CATOOSA-WHITFIELD-MURRAY-CHATTOOGA- 1202 PM EST FRI JAN 20 2012 ...FLOOD WATCH IN EFFECT FROM LATE TONIGHT THROUGH SUNDAY MORNING... THE NATIONAL WEATHER SERVICE IN PEACHTREE CITY HAS ISSUED A * FLOOD WATCH FOR A PORTION OF NORTHWEST GEORGIA. * FROM LATE TONIGHT THROUGH SUNDAY MORNING * A LOW PRESSURE SYSTEM OVER THE SOUTHERN PLAINS WILL LIFT NORTHEAST THROUGH TOMORROW AND TRACK ACROSS THE TENNESSEE VALLEY. AHEAD OF THIS SYSTEM...MOISTURE WILL INCREASE ACROSS THE STATE...AND LIGHT SHOWERS ARE ALREADY DEVELOPING OVER WESTERN PORTIONS OF GEORGIA. AS THE UPPER LEVEL DISTURBANCE AND SURFACE LOW TRACK CLOSER TO THE AREA ON SATURDAY...RAIN CHANCES WILL INCREASE AND AN EXTENDED PERIOD OF RAIN CAN BE EXPECTED THROUGH SATURDAY EVENING. THE HIGHEST RAINFALL AMOUNTS SHOULD REMAIN ACROSS NORTH GEORGIA WITH 1 TO 1.5 INCHES OF RAIN EXPECTED. MOST LOCATIONS WILL BE ABLE TO HANDLE THIS AMOUNT OF RAIN...EXCEPT FOR SOME CREEKS AND RIVERS IN NORTHWEST GEORGIA. * WITH THE GROUND SATURATED AND RECENT RIVER FLOODING IN NORTHWEST GEORGIA...PRE-EXISTING CONDITIONS INDICATED THERE IS THE POTENTIAL FOR MINOR FLOODING AT A FEW SITES ALONG CREEKS AND RIVERS ACROSS NORTHWEST GEORGIA. THIS INCLUDES PORTIONS OF LOOKOUT CREEK...WEST AND SOUTH CHICKAMAUGA CREEK...COAHULLA CREEK...AND THE CONASAUGA RIVER. PRECAUTIONARY/PREPAREDNESS ACTIONS... A FLOOD WATCH MEANS THERE IS A POTENTIAL FOR FLOODING BASED ON CURRENT FORECASTS. YOU SHOULD MONITOR LATER FORECASTS AND BE ALERT FOR POSSIBLE FLOOD WARNINGS. THOSE LIVING IN AREAS PRONE TO FLOODING SHOULD BE PREPARED TO TAKE ACTION SHOULD FLOODING DEVELOP. && $$
4 follow-up statements
361 WGUS62 KFFC 201913 FFAFFC FLOOD WATCH NATIONAL WEATHER SERVICE PEACHTREE CITY GA 213 PM EST FRI JAN 20 2012 GAZ001>005-011-210900- /O.CON.KFFC.FA.A.0001.120121T0600Z-120122T1200Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ DADE-WALKER-CATOOSA-WHITFIELD-MURRAY-CHATTOOGA- 213 PM EST FRI JAN 20 2012 ...FLOOD WATCH REMAINS IN EFFECT FROM 1 AM EST SATURDAY THROUGH SUNDAY MORNING... THE FLOOD WATCH CONTINUES FOR * A PORTION OF NORTHWEST GEORGIA. * FROM 1 AM EST SATURDAY THROUGH SUNDAY MORNING * A LOW PRESSURE SYSTEM OVER THE SOUTHERN PLAINS WILL LIFT NORTHEAST THROUGH TOMORROW AND TRACK ACROSS THE TENNESSEE VALLEY. AHEAD OF THIS SYSTEM...MOISTURE WILL INCREASE ACROSS THE STATE...AND LIGHT SHOWERS ARE CONTINUING TO TRACK ACROSS THE AREA. AS THE UPPER LEVEL DISTURBANCE AND SURFACE LOW TRACK CLOSER TO THE AREA ON SATURDAY...RAIN CHANCES WILL INCREASE AND AN EXTENDED PERIOD OF RAIN CAN BE EXPECTED THROUGH SATURDAY EVENING. THE HIGHEST RAINFALL AMOUNTS SHOULD REMAIN ACROSS NORTH GEORGIA WITH 1 TO 1.5 INCHES OF RAIN EXPECTED. MOST LOCATIONS WILL BE ABLE TO HANDLE THIS AMOUNT OF RAIN...EXCEPT FOR SOME CREEKS AND RIVERS IN NORTHWEST GEORGIA. * WITH THE GROUND SATURATED AND RECENT RIVER FLOODING IN NORTHWEST GEORGIA...PRE-EXISTING CONDITIONS INDICATED THERE IS THE POTENTIAL FOR MINOR FLOODING AT A FEW SITES ALONG CREEKS AND RIVERS ACROSS NORTHWEST GEORGIA. THIS INCLUDES PORTIONS OF LOOKOUT CREEK...WEST AND SOUTH CHICKAMAUGA CREEK...COAHULLA CREEK...AND THE CONASAUGA RIVER. PRECAUTIONARY/PREPAREDNESS ACTIONS... A FLOOD WATCH MEANS THERE IS A POTENTIAL FOR FLOODING BASED ON CURRENT FORECASTS. YOU SHOULD MONITOR LATER FORECASTS AND BE ALERT FOR POSSIBLE FLOOD WARNINGS. THOSE LIVING IN AREAS PRONE TO FLOODING SHOULD BE PREPARED TO TAKE ACTION SHOULD FLOODING DEVELOP. && $$
381 WGUS62 KFFC 210148 FFAFFC FLOOD WATCH NATIONAL WEATHER SERVICE PEACHTREE CITY GA 848 PM EST FRI JAN 20 2012 GAZ001>005-011-211100- /O.CON.KFFC.FA.A.0001.120121T0600Z-120122T1200Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ DADE-WALKER-CATOOSA-WHITFIELD-MURRAY-CHATTOOGA- 848 PM EST FRI JAN 20 2012 ...FLOOD WATCH REMAINS IN EFFECT FROM 1 AM EST SATURDAY THROUGH SUNDAY MORNING IN NORTHWEST GEORGIA... THE FLOOD WATCH CONTINUES FOR * A PORTION OF NORTHWEST GEORGIA. * FROM 1 AM EST SATURDAY THROUGH SUNDAY MORNING. * A LOW PRESSURE SYSTEM OVER ARKANSAS WILL MOVE NORTHEAST THROUGH THE TENNESSEE VALLEY ON SATURDAY AND INTO THE MIDDLE ATLANTIC STATES ON SUNDAY. A TRAILING COLD FRONT FROM THE LOW WILL MOVE INTO NORTHWEST GEORGIA SATURDAY MORNING AND THROUGH THE REMAINDER OF NORTH AND CENTRAL GEORGIA ON SATURDAY AND SATURDAY NIGHT. MOISTURE WILL CONTINUE TO INCREASE ACROSS THE STATE AHEAD OF THIS SYSTEM WITH WIDESPREAD SHOWERS AND A FEW THUNDERSTORMS. THE HIGHEST RAINFALL AMOUNTS SHOULD BE ACROSS NORTH GEORGIA WITH 1 TO 1.5 INCHES EXPECTED. MOST LOCATIONS WILL BE ABLE TO HANDLE THIS AMOUNT OF RAIN WITHOUT FLOODING PROBLEMS...EXCEPT FOR SOME CREEKS AND RIVERS IN NORTHWEST GEORGIA. * WITH THE GROUND SATURATED FROM RAIN AND MINOR RIVER FLOODING EARLIER THIS WEEK IN NORTHWEST GEORGIA...PRE-EXISTING CONDITIONS INDICATE THERE IS THE POTENTIAL FOR ADDITIONAL MINOR FLOODING ALONG PORTIONS OF CREEKS AND RIVERS IN NORTHWEST GEORGIA. THIS INCLUDES LOOKOUT CREEK...WEST AND SOUTH CHICKAMAUGA CREEKS... COAHULLA CREEK...AND THE CONASAUGA RIVER. PRECAUTIONARY/PREPAREDNESS ACTIONS... A FLOOD WATCH MEANS THERE IS A POTENTIAL FOR FLOODING BASED ON CURRENT FORECASTS. YOU SHOULD MONITOR LATER FORECASTS AND BE ALERT FOR POSSIBLE FLOOD WARNINGS. THOSE LIVING IN AREAS PRONE TO FLOODING SHOULD BE PREPARED TO TAKE ACTION SHOULD FLOODING DEVELOP. && $$ 16
148 WGUS62 KFFC 210801 FFAFFC URGENT - IMMEDIATE BROADCAST REQUESTED FLOOD WATCH NATIONAL WEATHER SERVICE PEACHTREE CITY GA 301 AM EST SAT JAN 21 2012 GAZ001>005-011-211615- /O.EXT.KFFC.FA.A.0001.000000T0000Z-120122T0000Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ DADE-WALKER-CATOOSA-WHITFIELD-MURRAY-CHATTOOGA- 301 AM EST SAT JAN 21 2012 ...FLOOD WATCH NOW IN EFFECT THROUGH THIS EVENING... THE FLOOD WATCH IS NOW IN EFFECT FOR * A PORTION OF NORTHWEST GEORGIA. * UNTIL 7 PM EST * A LOW PRESSURE SYSTEM OVER THE LOWER MISSISSIPPI VALLEY WILL MOVE THROUGH THE TENNESSEE VALLEY TODAY AND INTO THE MIDDLE ATLANTIC STATES ON SUNDAY. A TRAILING COLD FRONT FROM THE LOW WILL MOVE INTO NORTHWEST GEORGIA THIS MORNING AND INTO CENTRAL GEORGIA THIS AFTERNOON. RAIN AND A FEW THUNDERSTORMS WILL INCREASE ACROSS THE STATE THIS MORNING AND CONTINUE THROUGH MUCH OF TODAY AHEAD OF THE COLD FRONT. BY THIS EVENING MOST OF THE RAINFALL WILL BE IN THE CAROLINAS. THE HIGHEST RAINFALL AMOUNTS SHOULD BE ACROSS NORTH GEORGIA WITH 1 TO 1.5 INCHES EXPECTED. THIS COULD BE ENOUGH TO CAUSE MINOR FLOODING OF SOME CREEKS AND RIVERS IN NORTHWEST GEORGIA. * WITH THE GROUND SATURATED FROM RAIN AND MINOR RIVER FLOODING EARLIER THIS WEEK IN NORTHWEST GEORGIA...PRE-EXISTING CONDITIONS INDICATE THERE IS THE POTENTIAL FOR ADDITIONAL MINOR FLOODING ALONG PORTIONS OF CREEKS AND RIVERS IN NORTHWEST GEORGIA. THIS INCLUDES LOOKOUT CREEK...WEST AND SOUTH CHICKAMAUGA CREEKS... COAHULLA CREEK...AND THE CONASAUGA RIVER. PRECAUTIONARY/PREPAREDNESS ACTIONS... A FLOOD WATCH MEANS THERE IS A POTENTIAL FOR FLOODING BASED ON CURRENT FORECASTS. YOU SHOULD MONITOR LATER FORECASTS AND BE ALERT FOR POSSIBLE FLOOD WARNINGS. THOSE LIVING IN AREAS PRONE TO FLOODING SHOULD BE PREPARED TO TAKE ACTION SHOULD FLOODING DEVELOP. && $$
737 WGUS62 KFFC 211607 FFAFFC URGENT - IMMEDIATE BROADCAST REQUESTED FLOOD WATCH NATIONAL WEATHER SERVICE PEACHTREE CITY GA 1107 AM EST SAT JAN 21 2012 GAZ001>005-011-211715- /O.CAN.KFFC.FA.A.0001.000000T0000Z-120122T0000Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ DADE-WALKER-CATOOSA-WHITFIELD-MURRAY-CHATTOOGA- 1107 AM EST SAT JAN 21 2012 ...FLOOD WATCH IS CANCELLED... THE FLOOD WATCH FOR A PORTION OF NORTHWEST GEORGIA HAS BEEN CANCELLED. THE RAIN HAS TAPERED OFF THIS MORNING AND THE THREAT FOR HEAVY RAIN AND FLOODING HAS ENDED. $$ GAZ022-031>035-041>048-052>057-220000- /O.NEW.KFFC.FF.A.0001.120121T1607Z-120122T0000Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ FORSYTH-PAULDING-COBB-NORTH FULTON-GWINNETT-BARROW-HARALSON- CARROLL-DOUGLAS-SOUTH FULTON-DEKALB-ROCKDALE-WALTON-NEWTON-HEARD- COWETA-FAYETTE-CLAYTON-SPALDING-HENRY- INCLUDING THE CITIES OF...MARIETTA...ATLANTA...LAWRENCEVILLE... CARROLLTON...DOUGLASVILLE...EAST POINT...DECATUR...CONYERS... COVINGTON...NEWNAN...PEACHTREE CITY...GRIFFIN 1107 AM EST SAT JAN 21 2012 ...FLASH FLOOD WATCH IN EFFECT UNTIL 7 PM EST THIS EVENING... THE NATIONAL WEATHER SERVICE IN PEACHTREE CITY HAS ISSUED A * FLASH FLOOD WATCH FOR PORTIONS OF NORTH CENTRAL GEORGIA... NORTHWEST GEORGIA AND WEST CENTRAL GEORGIA. * UNTIL 7 PM EST THIS EVENING * RAINFALL AMOUNTS OF 1 TO 3 INCHES HAS FALLEN OVER PARTS OF WESTCENTRAL GEORGIA AND THE ATLANTA METRO AREA. ANOTHER LINE OF SHOWERS AND THUNDERSTORMS IS EXPECTED TO AFFECT MUCH OF THIS AREA AGAIN TODAY WITH AN ADDITIONAL 1 TO 3 INCHES OF RAIN POSSIBLE. SOME MINOR FLOODING HAS ALREADY BEEN REPORTED. * HEAVY RAIN WILL CAUSE RAPID RISES AND MINOR FLOODING OF SMALLER CREEKS AND STREAMS. ROADWAYS MAY BECOME COVERED WITH FLOWING WATER. URBAN AREAS WILL ALSO SEE FLOODING...ESPECIALLY IN POOR DRAINAGE AREAS. PRECAUTIONARY/PREPAREDNESS ACTIONS... A FLASH FLOOD WATCH MEANS THAT CONDITIONS MAY DEVELOP THAT LEAD TO FLASH FLOODING. FLASH FLOODING IS A VERY DANGEROUS SITUATION. NEVER DRIVE INTO FLOODED AREAS. TURN AROUND AND DONT DROWN. MONITOR LATER FORECASTS AND BE PREPARED TO TAKE ACTION SHOULD ADDITIONAL FLASH FLOOD WARNINGS BE ISSUED. && $$
Nearby
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.