Atlanta weather

[toxictwister00]

I did. I said "Is this the first time a tornado ever struck downtown Atlanta?

This is the first time a tornado has gone right through Downtown Atlanta in history, but there have been a couple of tornadoes to hit around the area.

Read before you post!

What are you talking about? I did read before I post and noone responded to the question.

[Localonthe8s]

I wasn't really expecting an answer but thanks anyways. I was quoting lfmusiclover's reponse to the post i made

[toxictwister00]

It snowed twice today after the noontime. A big surprise since there wasn't supposed to be any.

[toxictwister00]

I didn't know if I should bump this thread or not or start a new one so I'm bumping it for now.

Potential Winter Weather?

Our Chief Meteorologist Glenn Burns thinks so and says he's closely monitoring it.

To give some insight the GFS and Euro computer models are beginning to agree with eachother which raises the potential and the fact that the GFS has the 540 line (rain/snow line) all the way down to the Gulf Coast! Still have plenty of doubts, but I been fooled before.

[toxictwister00]

The Wintry mix potential is still there and has increased slightly for Monday.

Tonight: Clear to partly cloudy and milder, lows in the 40s.

Friday: Mostly cloudy with a slight chance of showers in the morning, then a chance of showers in the afternoon. Highs in the lower 60s. Northwest winds 5 to 10 mph. Chance of rain 20 percent.

Saturday: occasional showers in the morning, then a chance of showers in the afternoon. Lows in the mid to upper 40s; Highs in the low to mid 50s. East winds 10 to 20 mph. Chance of rain 90 percent.

Sunday: Showers likely. A winter mix in the mountains possible after midnight. Lows in the mid 40s in town, mid to upper 30s in the mountains; Highs in the mid to upper 40s. Chance of rain 70 percent.

. Monday: Mostly cloudy with a 30 percent chance of rain and snow. Windy. Lows in the mid 30s; Highs in the mid to upper 40s.

[toxictwister00]

Strong thunderstorms are making their way in right now, if TWC's forecast comes out right, we could see 6 inches!!!

Today
Rain likely with a few thunderstorms. High 63F. Winds S at 10 to 20 mph. 1 to 2 inches of rain expected.
Tonight
Rain showers this evening becoming steadier and heavier overnight. Low 53F. Winds NNE at 5 to 10 mph. 1 to 2 inches of rain expected.
Tomorrow
Cloudy with periods of rain, some heavy early. Thunder possible. High 54F. Winds WNW at 10 to 20 mph. 1 to 2 inches of rain expected.

[toxictwister00]

I'm seeing another bad Cold & Flu Season this year with the topsy-turvy weather expected the next 10 days.

[toxictwister00]

Current Conditions
57

Cloudy

Showers and Thunderstorms will be moving in in the next several hours overnight tonight.

Hazardous Outlook
THIS HAZARDOUS WEATHER OUTLOOK IS FOR NORTH AND CENTRAL GEORGIA.

.DAY ONE...TONIGHT
A FEW THUNDERSTORMS POSSIBLE ACROSS PORTIONS OF WESTERN AND CENTRAL
GEORGIA THIS AFTERNOON AND EVENING.

.SYNOPSIS...
A WARM FRONT STRETCHED ACROSS CENTRAL AND WESTERN GEORGIA THIS
AFTERNOON. THIS FRONT WILL CONTINUE LIFTING SLOWLY NORTH THROUGH
TONIGHT.

.PRIMARY HAZARDS...
THE PRIMARY HAZARD WILL BE OCCASIONAL LIGHTNING AND BRIEF HEAVY
DOWNPOURS. MOST OF THE THUNDERSTORM ACTIVITY WILL BE ALONG AND SOUTH
OF A LINE FROM TRENTON TO JACKSON AND VIDALIA.

.DISCUSSION...
THE WARM FRONT WILL GRADUALLY MOVE NORTH THROUGH TONIGHT. ALONG AND
SOUTH OF THE FRONT...INSTABILITIES SHOULD BE SUFFICIENT TO PRODUCE A
FEW THUNDERSTORMS. CAPE VALUES WILL REACH ONLY ABOUT 500 AND WIND
SHEAR IS WEAK...SO ANY THUNDERSTORMS THAT FORM ARE NOT EXPECTED TO
BECOME SEVERE.

.DAYS TWO THROUGH SEVEN...SUNDAY THROUGH FRIDAY
ISOLATED THUNDERSTORMS EXPECTED SUNDAY AND WITH MORE WIDESPREAD
THUNDERSTORMS EXPECTED ON TUESDAY. OTHERWISE NO HAZARDOUS WEATHER

[toxictwister00]

7 day forecast of the COLDEST OF THE COLD this winter, although it says 10°,single digits are not out of the question in town which would challenge or break records.

Source: WGCL-TV
http://www.cbsatlanta.com/weather/index.html

^ OT: They went into HD last October and finally updated thier website, but the weather page banner is messed up with the old one.

[toxictwister00]

BREAKING WEATHER NEWS: POSSIBLE MAJOR SOUTHEAST SNOWSTORM COMING!

Metro Atlanta
From Meteorologist David Chandley:

The clearing trend will continue today with temps in the 40s to lower 50s later on. Another surge of colder air on Friday with windy conditions. Of course the hot weather topic is the possibility for snow next week. I am gathering new data now and Glenn and I will have a full report tonight starting at 5pm.

Today: Clearing sky and cool, winds NW 10-20 mph. Highs in the upper 40s to low 50s.

Tonight: Clear and cold. Lows in the 20s to near 30.

Tomorrow: Sunny, windy. NW 15-25 mph. Highs around 50.

Saturday: Sunny. Lows in the mid to upper 20s; highs in the low to mid 50s.

Sunday: Partly sunny, turning mostly cloudy in the evening slight chance of showers after midnight. Lows in the low 30s; highs in the mid 50s.

Monday: Cloudy, 60% chance of rain, changing to snow in North Georgia by evening. Lows in the mid 30s; highs in the mid 40s.

Tuesday Rain and snow likely. Accumulating snow possible. Temps holding in the 30s.

[toxictwister00]

ATTENTION: A Tornado Watch and a Wind Advisory was issued within the past 20 minutes for my area, there's also tornado warnings are out for a supercell heading east at 45mph along 1-20, at this point it appears to be making a bullseye towards the Atlanta metro area. The Tornado Watch expires at 11pm EST for Atlanta on southeast, the watch for Marietta on northwest expires at 9pm EST. Below is a radar loop including warnings.

[toxictwister00]

WEATHER BULLETIN:

WILD WEEKEND AHEAD!!! MARCH TO ROAR IN WITH SNOW???

Storm Timeline:
Friday/ Friday Night - Rain and perhaps a thunderstorm in the afternoon. High 63F. Winds S at 10 to 15 mph. Chance of rain 80%. Rainfall possibly over one inch.
Rain likely with a few thunderstorms. A few storms may be severe. Low 52F. Winds SE at 5 to 10 mph. Chance of rain 90%. 1 to 2 inches of rain expected.

Saturday - Thundershowers. Highs in the low 60s and lows in the mid 30s.

Sunday - Mostly cloudy and windy with snow showers. Highs in the mid 40s and lows in the upper 20s.

Summary: Throughout Friday is expected be to heavy rainfall with the chance of 1-3 inches possible. By Saturday we get into the severe nature of the storm, I wouldn't be surprised if there were breaks in the clouds and the NWS issues a Tornado Watch for my CWA because the dynamics will be there for such a feature to develop. Once we get into Saturday night things become interesting with some fun and games as COLD Canadian air comes crashing into the NW side of GA. Models have indicated that the 850 mb thickness will be cold enough to produce backlash precip as all snow for N. Ga including the Atlanta metro area. It's something to keep an eye on, but I believe no such thing will happen for Atlanta (at least measurable) as we have experienced temps. in the 60's most of this week and of course the sun angle is getting stronger so marginal temps. near freezing will not do the trick for any snow to stick as it would have in January when the angle was much weaker. Nonetheless this will be the most exciting weekend we have seen all month. I'll post more on this situation tomorrow and on throughout the weekend as this storm develops

[toxictwister00]

WEATHER BULLETIN

WILD WEEKEND BEGINS TODAY, IT ONLY GETS WILDER AS IT PROGRESSES

7:00am Friday Update

Flood Watches have now been issued for North Georgia for the prospects of 2-4 inches of rain expected the next 36 hours. Details are below.

FLOOD WATCH
NATIONAL WEATHER SERVICE PEACHTREE CITY GA
353 AM EST FRI FEB 27 2009

GAZ001>009-011>016-019>025-027-030>039-041>055-057-271700-
/O.NEW.KFFC.FA.A.0002.090227T2100Z-090228T1700Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
DADE-WALKER-CATOOSA-WHITFIELD-MURRAY-FANNIN-GILMER-UNION-TOWNS-
CHATTOOGA-GORDON-PICKENS-DAWSON-LUMPKIN-WHITE-FLOYD-BARTOW-
CHEROKEE-FORSYTH-HALL-BANKS-JACKSON-MADISON-POLK-PAULDING-COBB-
NORTH FULTON-GWINNETT-BARROW-CLARKE-OCONEE-OGLETHORPE-WILKES-
HARALSON-CARROLL-DOUGLAS-SOUTH FULTON-DEKALB-ROCKDALE-WALTON-
NEWTON-MORGAN-GREENE-TALIAFERRO-HEARD-COWETA-FAYETTE-CLAYTON-
HENRY-
INCLUDING THE CITIES OF...CALHOUN...DAHLONEGA...CLEVELAND...
ROME...CARTERSVILLE...GAINESVILLE...MARIETTA...ATLANTA...
LAWRENCEVILLE...ATHENS...CARROLLTON...DOUGLASVILLE...EAST POINT...
DECATUR...CONYERS...COVINGTON...NEWNAN...PEACHTREE CITY
353 AM EST FRI FEB 27 2009

...FLOOD WATCH IN EFFECT FROM THIS AFTERNOON THROUGH SATURDAY
MORNING FOR PORTIONS OF NORTH AND CENTRAL GEORGIA...

THE NATIONAL WEATHER SERVICE IN PEACHTREE CITY HAS ISSUED A

* FLOOD WATCH FOR PORTIONS OF EAST CENTRAL GEORGIA...NORTH
  CENTRAL GEORGIA...NORTHEAST GEORGIA...NORTHWEST GEORGIA AND
  WEST CENTRAL GEORGIA.

* FROM THIS AFTERNOON THROUGH SATURDAY MORNING

* A LARGE STORM SYSTEM PUSHING ACROSS THE GREAT LAKES IS EXPECTED
  TO PULL A COLD FRONT ACROSS THE LOWER MISSISSIPPI AND TENNESSEE
  VALLEY REGION TODAY. A MODERATELY STRONG LOW LEVEL FLOW WILL
  FORCE ABUNDANT MOISTURE NORTH FROM THE GULF OF MEXICO INTO THE
  SOUTHEAST U.S. IN ADVANCE OF THIS SYSTEM.

AS THE COLD FRONT MOVES SOUTHEAST...SHOWERS AND THUNDERSTORMS WITH
HEAVY RAIN ARE EXPECTED TO DEVELOP OVER ALABAMA AND MOVE INTO
GEORGIA BY THIS AFTERNOON. THE COLD FRONT IS EXPECTED TO BECOME
STATIONARY OVER NORTH GEORGIA TONIGHT AND SATURDAY AS A SERIES OF
UPPER LEVEL DISTURBANCES MOVE PARALLEL TO THE FRONT. THIS WILL
CAUSE A SURFACE LOW PRESSURE SYSTEM TO DEVELOP OVER CENTRAL
ALABAMA AND DEEPEN AS IT MOVES NORTHEAST INTO THE CAROLINAS BY
SATURDAY NIGHT.

WIDESPREAD HEAVY RAINFALL AMOUNTS OF 2 TO 3 INCHES WITH ISOLATED 4
INCHES POSSIBLE CAN BE ANTICIPATED OVER MOST OF NORTH GEORGIA
TONIGHT AND SATURDAY. THE HEAVY RAIN THREAT AREA AT THIS TIME
WILL BE GENERALLY NORTH OF A LINE FROM LAGRANGE TO MADISON TO
WASHINGTON.

* THIS HEAVY RAINFALL WILL LIKELY CAUSE SOME RIVERS...STREAMS AND
  CREEKS TO RISE TO LEVELS THAT RESULT IN MINOR FLOODING.
  LOCALIZED FLASH FLOODING IS ALSO POSSIBLE IN URBAN AREAS AND
  MOUNTAINOUS TERRAIN DUE TO RAPID RUNOFF.

A FLOOD WATCH MEANS THAT CONDITIONS ARE FAVORABLE FOR FLOODING
ESPECIALLY ALONG LARGER STREAMS AND RIVERS. IF YOU ARE IN THE
WATCH AREA...CHECK YOUR PREPAREDNESS REQUIREMENTS...ESPECIALLY IF
YOU HAVE INTERESTS ALONG AREA RIVERS. KEEP INFORMED...AND BE
READY FOR ACTION IF FLOODING IS OBSERVED OR IF A FLOOD WARNING IS ISSUED.

This is just Phase One, Phase Two comes with the slight chance of severe weather today into Saturday. The main threats are for damaging winds with squall lines, it's not expected to be like last Wednesday with the big tornado outbreak.

Now here comes the Third and tricky part of the Phases this weekend, the possibility of accumulating snow. Models continue to indicate accumulating snow to slide southeast affecting GA, AL, TN, NC, SC, and maybe FL? That seems to be what the JMA computer believes, it even wants to bring snow as far south of Tampa, FL! Pix below:



As always, the axis for the heaviest snow depends on the track, there are current 3 different senarios on what track the closed upper level low will take.
Scenario#1 - Least likely at this point
The low tracks more north of GA and brings the heaviest snow to the TN Valley and the Western Carolinas, with only flurries maybe in Atlanta, the problem with this scenario is those places may not be cold enough to support snow at first, so that would cut down on any significant accumulations.

Scenario #2 - My favored solution
The low pressure tracks further south into Central AL and GA and brings places like Birmingham,AL Atlanta,GA Columbia,SC the heaviest amounts of snow. There's a 50/50 shot with this scenario, that's good enough for me right now.

Scenario #3 - 50/50 shot
The LP system goes even further south bringing the heaviest snow south of I-20 into places such as Montgomery,AL Columbus,Ga, Macon,Ga just north of Charleston,SC and even north/central Florida could get into some snow shower fun!

I'll have more on this later today, right now I have to run out and get some milk, eggs, and bread! 

[toxictwister00]

SIGNIFICANT WEATHER ALERT!!!

SOUTHEAST SNOWSTORM ON THE HORIZON!!!

6:00PM Saturday

It's now time to get into the snow aspect of the weather this weekend. A Winter Weather Advisory has been posted for North and Central Georgia all the way south into Columbus,Ga! Winter Storm Watches have been extended south into Montgomery, AL!

Winter Weather Advisory
URGENT - WINTER WEATHER MESSAGE
NATIONAL WEATHER SERVICE PEACHTREE CITY GA
341 PM EST SAT FEB 28 2009

...POWERFUL STORM SYSTEM TO BRING SNOW TO MUCH OF NORTH AND
CENTRAL GEORGIA ON SUNDAY AND SUNDAY EVENING...

.A POWERFUL UPPER LEVEL STORM SYSTEM WILL TRACK ACROSS CENTRAL
ALABAMA INTO SOUTHERN GEORGIA ON SUNDAY AND SUNDAY NIGHT.
PRECIPITATION WILL CHANGE FROM RAIN TO A MIXTURE OF RAIN AND SNOW
TO ALL SNOW AS THE COLD AIR ALOFT BUILDS IN FROM THE WEST.
ACCUMULATIONS OF 1 TO 2 INCHES ARE EXPECTED...ESPECIALLY ON GRASSY
AND EXPOSED SURFACES.

GAZ001>009-011>016-019>025-027-030>039-041>062-066>075-078>084-
089>096-010445-
/O.NEW.KFFC.WW.Y.0003.090301T1500Z-090302T0500Z/
DADE-WALKER-CATOOSA-WHITFIELD-MURRAY-FANNIN-GILMER-UNION-TOWNS-
CHATTOOGA-GORDON-PICKENS-DAWSON-LUMPKIN-WHITE-FLOYD-BARTOW-
CHEROKEE-FORSYTH-HALL-BANKS-JACKSON-MADISON-POLK-PAULDING-COBB-
NORTH FULTON-GWINNETT-BARROW-CLARKE-OCONEE-OGLETHORPE-WILKES-
HARALSON-CARROLL-DOUGLAS-SOUTH FULTON-DEKALB-ROCKDALE-WALTON-
NEWTON-MORGAN-GREENE-TALIAFERRO-HEARD-COWETA-FAYETTE-CLAYTON-
SPALDING-HENRY-BUTTS-JASPER-PUTNAM-HANCOCK-WARREN-TROUP-
MERIWETHER-PIKE-UPSON-LAMAR-MONROE-JONES-BALDWIN-WASHINGTON-
GLASCOCK-HARRIS-TALBOT-TAYLOR-CRAWFORD-BIBB-TWIGGS-WILKINSON-
MUSCOGEE-CHATTAHOOCHEE-MARION-SCHLEY-MACON-PEACH-HOUSTON-BLECKLEY-
INCLUDING THE CITIES OF...CALHOUN...DAHLONEGA...CLEVELAND...
ROME...CARTERSVILLE...GAINESVILLE...MARIETTA...ATLANTA...
LAWRENCEVILLE...ATHENS...CARROLLTON...DOUGLASVILLE...EAST POINT...
DECATUR...CONYERS...COVINGTON...NEWNAN...PEACHTREE CITY...
GRIFFIN...MILLEDGEVILLE...MACON...COLUMBUS...WARNER ROBINS
341 PM EST SAT FEB 28 2009

...WINTER WEATHER ADVISORY IN EFFECT FROM 10 AM SUNDAY TO
MIDNIGHT EST SUNDAY NIGHT...

THE NATIONAL WEATHER SERVICE IN PEACHTREE CITY HAS ISSUED A
WINTER WEATHER ADVISORY...WHICH IS IN EFFECT FROM 10 AM SUNDAY TO
MIDNIGHT EST SUNDAY NIGHT. THE ADVISORY AREA COVERS MUCH OF NORTH
AND CENTRAL GEORGIA NORTH OF A LINE FROM CUSSETA TO PERRY TO
MILLEDGEVILLE TO WEST OF AUGUSTA.

LIGHT RAIN WILL MOVE INTO FAR NORTHWEST GEORGIA LATE TONIGHT AS
THE STORM SYSTEM MOVES TOWARD THE STATE. AS THE UPPER LEVEL LOW
PRESSURE AREA TRACKS ACROSS SOUTHERN GEORGIA...COLD AIR ALOFT WILL
PUSH ACROSS THE STATE CAUSING THE RAIN TO MIX WITH AND EVENTUALLY
CHANGE TO SNOW.

THE STRONG LIFT ASSOCIATED WITH THE STORM SYSTEM WILL CREATE A
SWATH OF SIGNIFICANT PRECIPITATION TO THE NORTH OF THE LOW
PRESSURE AREA. AS THE COLD AIR MOVES INTO THIS PRECIPITATION
SUNDAY AFTERNOON AND EVENING...SNOW ACCUMULATIONS OF 1 TO 2 INCHES
CAN BE EXPECTED WITH ISOLATED HIGHER AMOUNTS POSSIBLE.

THE LIMITING FACTOR FOR HEAVIER SNOW ACCUMULATION WILL BE A LAYER
OF ABOVE FREEZING TEMPERATURES NEAR THE SURFACE WHICH WILL CAUSE
SOME OF THE SNOW TO MELT...ESPECIALLY DURING THE MORNING. GROUND
SURFACES WILL ALSO BE WARM DUE TO THE RECENT MILD TEMPERATURES AND
SHOULD MAKE IT DIFFICULT FOR SNOW TO ACCUMULATE ON ROADWAYS.
HOWEVER...IF A HEAVY BAND OF SNOW DEVELOPS IT COULD CAUSE
TEMPERATURES TO FALL AND SIGNIFICANT ACCUMULATIONS OF SNOW TO
OCCUR ON ROADS.

PERSONS IN THE ADVISORY AREA ARE URGED TO MONITOR THE LATEST
CONDITIONS AND FORECASTS ON TELEVISION... RADIO...THE INTERNET OR
NOAA WEATHER RADIO. IF THE STORM SYSTEM OR COLD AIR INTENSIFIES
FURTHER...A WINTER STORM WARNING MAY BE ISSUED FOR PARTS OF THE
AREA.

A WINTER WEATHER ADVISORY MEANS THAT PERIODS OF SNOW...SLEET...OR
FREEZING RAIN WILL CAUSE TRAVEL DIFFICULTIES. BE PREPARED FOR
SLIPPERY ROADS AND LIMITED VISIBILITIES...AND USE CAUTION WHILE DRIVING.

The picture below is of a highway snapshot in Memphis,Tn. look what has piled up in just a matter of 2 hours.



Below this is a US map of watches, warnings, and advisories out, Notice that the SE is lit up with Winter Weather Advisories or Winter Storm Watches/Warnings. There's also a snow forecast map from TWC posted below as well.(Updated map)

36 hour forecast - Source ~ TWCi
Tonight - Cloudy. Low 41F. Winds N at 5 to 10 mph.

Sunday - Rain mixing with and changing to snow in the afternoon. High 41F. Winds NNW at 15 to 25 mph. Chance of precip 90%. 2 to 4 inches of snow expected. (snow accumulation updated, orignially 1-3 inches, percentage has also increased from 80% to 90%)

Sunday Night - Snow in the evening will give way to some clearing overnight. Low near 25F. Winds NNW at 15 to 25 mph. Chance of snow 70%. A slushy accumulation of less than one inch. (snow accumulation added since noontime, percentage increased from 50% to 70%)

Notice that that the low and high for tonight and tomorrow is the same, that's because temps are expected to fall during the day instead of rise. During the peak of the heaviest snow temps are expected to drop from 39° to 33° possibly down to or below freezing depending on dynamic cooling of the surface. Also there's a chance of thundersnow with this system because of the convective lift and powerful energy it will carry.

[toxictwister00]

Current Conditions:



37°
Moderate Snow!

After 30 minutes of moderate snow, acumulation is beginning (dusting so far)