Alert archive / Georgia / River Flood Warnings in 2010

River Flood Warning 100, NWS Atlanta, GA

April 24, 2010Forsyth County, Fulton County, Georgia

NWS Atlanta, GA issued this river flood warning at Apr 24, 2010, 8:28 PM EDT for Forsyth County, Fulton County, Georgia. It took effect at Apr 25, 2010, 2:00 AM EDT. It was in force for 5 hr.

The area

The counties it named.

The facts

Issued
Apr 24, 2010, 8:28 PM EDT (00:28 UTC)
In effect from
Apr 25, 2010, 2:00 AM EDT
Expired
Apr 25, 2010, 7:12 AM EDT
In force
5 hr
Issued by
NWS Atlanta, GA
Flood severity
Minor

Counties Forsyth County, GA, Fulton County, GA

The radar

The Atlanta radar (KFFC), 76 km from the middle of the area, began a volume at 00:30 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 river

Written for the forecast point Big Creek near Alpharetta (APHG1). The gauge peaked at 6.50 ft at Apr 25, 2010, 2:00 AM EDT.

actionminormoderate51004/2404/2504/26
Action stage
6 ft
Minor stage
7 ft
Moderate stage
11 ft
Major stage
13 ft

This gauge today: stage, forecast and historic crests

Stage from the USGS instantaneous record for site 02335700, one reading an hour, from a day before the product to a day after it ended. Flood stages are today's.

What forecasters said that day

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

NWS Atlanta, GA wrote its last area forecast discussion before this river flood warning went out at Apr 24, 3:58 PM EDT, 4 hours 30 minutes earlier.

Area forecast discussion, Apr 24, 3:58 PM EDT, 4 hours 30 minutes before
AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE PEACHTREE CITY GA
358 PM EDT SAT APR 24 2010

.SHORT TERM /TODAY THROUGH TUESDAY/...
THE RAINFALL HAS STABILIZED THE AIR MASS SOMEWHAT...BUT REMAIN
VERY UNSTABLE AS WE MOVE INTO THE WARM SECTOR. THE DEEP AREA LOW
PRESSURE CONTINUES TO SPIN OVER THE CENTRAL PLAINS...AND SLOWLY
MOVING OFF TO THE NORTHEAST. THE ASSOCIATED COLD FRONT WILL SWING
THROUGH THE CWA SUNDAY AFTERNOON...BUT THE BROAD AREA OF LOW
PRESSURE WILL KEEP ENOUGH MOISTURE AROUND FOR SOME CLOUDINESS AND
POSSIBLY A FEW SHOWERS NORTH MONDAY. THEN AS A WAVE DEVELOPS AND
MOVES ALONG THE FRONT...A CHANCE OF MORE SHOWERS TUESDAY.

.LONG TERM /TUESDAY NIGHT THROUGH FRIDAY/...
TUESDAY NIGHT...HIGH PRESSURE BECOMES MORE DOMINATE THROUGH
THURSDAY NIGHT... AS THE NEXT STORM SYSTEM MOVES THROUGH THE
PLAINS INTO THE MISSISSIPPI VALLEY AND SPREAD INCREASING AMOUNTS
MOISTURE INTO THE AREA FRIDAY AND INTO THE WEEKEND.

&&

.PRELIMINARY POINT TEMPS/POPS...
ATHENS          74  62  83  57  73 /  80 100  20  10  20
ATLANTA         72  62  79  59  70 /  90 100  20  20  20
BLAIRSVILLE     69  58  74  53  64 /  90 100  20  30  40
CARTERSVILLE    73  61  84  54  69 /  90 100  10  20  30
COLUMBUS        76  67  86  60  77 /  80 100  20  10  10
GAINESVILLE     71  61  77  57  68 /  90 100  20  30  30
MACON           77  65  83  58  80 /  70 100  20  10  10
ROME            76  64  82  56  72 /  90 100  10  30  30
PEACHTREE CITY  74  60  82  54  72 /  90 100  20  10  10
VIDALIA         81  65  79  63  83 /  50  70  30  10  10

&&

.FFC WATCHES/WARNINGS/ADVISORIES...
NONE.
&&

37
Hazardous weather outlook, Apr 24, 1:20 PM EDT, 7 hours 8 minutes before
HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE PEACHTREE CITY GA
120 PM EDT SAT APR 24 2010

GAZ001>009-011>016-019>025-027-030>039-041>062-066>076-078>086-
089>098-102>113-251000-
BALDWIN-BANKS-BARROW-BARTOW-BIBB-BLECKLEY-BUTTS-CARROLL-CATOOSA-
CHATTAHOOCHEE-CHATTOOGA-CHEROKEE-CLARKE-CLAYTON-COBB-COWETA-
CRAWFORD-CRISP-DADE-DAWSON-DEKALB-DODGE-DOOLY-DOUGLAS-EMANUEL-
FANNIN-FAYETTE-FLOYD-FORSYTH-GILMER-GLASCOCK-GORDON-GREENE-
GWINNETT-HALL-HANCOCK-HARALSON-HARRIS-HEARD-HENRY-HOUSTON-JACKSON-
JASPER-JEFFERSON-JOHNSON-JONES-LAMAR-LAURENS-LUMPKIN-MACON-
MADISON-MARION-MERIWETHER-MONROE-MONTGOMERY-MORGAN-MURRAY-
MUSCOGEE-NEWTON-NORTH FULTON-OCONEE-OGLETHORPE-PAULDING-PEACH-
PICKENS-PIKE-POLK-PULASKI-PUTNAM-ROCKDALE-SCHLEY-SOUTH FULTON-
SPALDING-STEWART-SUMTER-TALBOT-TALIAFERRO-TAYLOR-TELFAIR-TOOMBS-
TOWNS-TREUTLEN-TROUP-TWIGGS-UNION-UPSON-WALKER-WALTON-WARREN-
WASHINGTON-WEBSTER-WHEELER-WHITE-WHITFIELD-WILCOX-WILKES-
WILKINSON-
120 PM EDT SAT APR 24 2010

THIS HAZARDOUS WEATHER OUTLOOK IS FOR NORTH AND CENTRAL GEORGIA.

.DAY ONE...THIS AFTERNOON AND TONIGHT...
SEVERE THUNDERSTORMS ARE EXPECTED ACROSS NORTH AND CENTRAL GEORGIA
THIS AFTERNOON INTO TONIGHT. AN OUTBREAK OF SEVERE WEATHER...
INCLUDING TORNADOES...IS POSSIBLE ESPECIALLY ACROSS NORTH AND WEST
GEORGIA.

.SYNOPSIS...
A VERY STRONG STORM SYSTEM IN THE CENTRAL U.S. WILL CONTINUE TO
STRENGTHEN AND MOVE NORTHEAST TODAY...PUSHING A COLD FRONT ACROSS
THE REGION TONIGHT.

.PRIMARY HAZARDS...
THE PRIMARY HAZARDS ASSOCIATED WITH SEVERE THUNDERSTORMS TODAY ARE
HAIL...DAMAGING WINDS AND ISOLATED TORNADOES. DEADLY CLOUD TO GROUND
LIGHTNING CAN ALSO BE EXPECTED. WHILE THUNDERSTORMS ARE POSSIBLE AT
ANY TIME TODAY...SEVERE THUNDERSTORMS ARE MOST LIKELY LATE THIS
AFTERNOON THROUGH TONIGHT.

.DISCUSSION...
SHOWERS AND THUNDERSTORMS WILL CONTINUE ACROSS THE AREA. AS
INSTABILITY INCREASES THROUGH THE AFTERNOON...AN INCREASE IN
THUNDERSTORM INTENSITY CAN BE EXPECTED. CAPES WILL INCREASE TO
AROUND 1000 THIS AFTERNOON WITH EXTREMELY STRONG VERTICAL WIND
SHEAR. AS THE INSTABILITY AND SHEAR REACH MAXIMUMS BY LATE THIS
AFTERNOON AND THIS EVENING...THE THREAT OF SUPERCELL THUNDERSTORMS
WILL INCREASE...ESPECIALLY ACROSS NORTH AND WEST GEORGIA. THE SEVERE
WEATHER THREAT SHOULD DIMINISH SOMEWHAT BY EARLY SUNDAY MORNING.

WITH SUCH A SIGNIFICANT THREAT FOR SEVERE WEATHER IN PLACE...DO NOT
WAIT FOR A TORNADO WATCH TO BE ISSUED TO BEGIN YOUR SAFETY
PREPARATIONS.

.DAYS TWO THROUGH SEVEN...SUNDAY THROUGH FRIDAY
THE SLIGHTLY DIMINISHED THREAT OF SEVERE WEATHER EARLY SUNDAY
MORNING WILL INCREASE AGAIN DURING THE LATE MORNING AND EARLY
AFTERNOON HOURS ACROSS CENTRAL GEORGIA...BEFORE THE SYSTEM MOVES
OUT. DAMAGING WINDS AND HAIL WILL BE THE MAIN THREATS...BUT ISOLATED
TORNADOES ARE ALSO POSSIBLE.

AFTER SUNDAY...NO HAZARDOUS WEATHER IS EXPECTED THROUGH THE WEEK.

.SPOTTER INFORMATION STATEMENT...
SPOTTER ACTIVATION IS EXPECTED THIS THIS AFTERNOON AND TONIGHT
ACROSS ALL OF NORTH AND CENTRAL GEORGIA.

In the hours before

Special weather statement, Apr 24, 5:19 PM EDT, 3 hours 9 minutes before
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Special weather statement, Apr 24, 7:04 PM EDT, 1 hour 24 minutes before
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Special weather statement, Apr 24, 7:23 PM EDT, 1 hour 5 minutes before
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Special weather statement, Apr 24, 7:27 PM EDT, 1 hour 1 minute before
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Special weather statement, Apr 24, 7:54 PM EDT, 34 minutes before
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Special weather statement, Apr 24, 8:07 PM EDT, 21 minutes before
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The office that day

Everything else NWS Atlanta, GA issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Apr 24, 11:56 PM EDTTornado WarningFFCChattooga, Dade, Walker64 min
Apr 25, 12:35 AM EDTSevere Thunderstorm WarningFFCCrawford, Marion, Talbot, Taylor, Upson40 min
Apr 25, 12:48 AM EDTTornado WarningFFCWalker, Whitfield42 min
Apr 25, 1:00 AM EDTSevere Thunderstorm WarningFFCButts, Jasper, Jones, Lamar, Monroe30 min
Apr 25, 1:07 AM EDTSevere Thunderstorm WarningFFCFannin, Gilmer, Murray38 min
Apr 25, 1:18 AM EDTTornado WarningFFCChattooga49 min
Apr 25, 1:40 AM EDTFlash Flood WarningFFCWalker, Whitfield113 min
Apr 25, 1:40 AM EDTTornado WarningFFCFannin, Gilmer, Murray30 min
Apr 25, 1:49 AM EDTSevere Thunderstorm WarningFFCChattooga, Floyd41 min
Apr 25, 4:57 AM EDTSevere Thunderstorm WarningFFCCrisp, Dooly, Pulaski, Wilcox23 min
Apr 25, 5:13 AM EDTSevere Thunderstorm WarningFFCBleckley, Dodge, Pulaski32 min
Apr 25, 10:51 AM EDTRiver Flood WarningFFCWhitfield10 hr

Nearby

River Flood Warnings in Georgia, 2010Every river flood warning in 2010

Sources

The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; radar from the NEXRAD Level II archive; the gauge from the NWS water service and the USGS.