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Shaded-relief map of Norcross, Georgia: rivers, roads, the city limits and where the water drains.
GEORGIA · GWINNETT COUNTY

Norcross

18,902 people, 1,060 ft above sea level in Gwinnett County.

1,060 ftElevation, city center
18,902People, 2024 estimate
6 sq miLand area
Sunny 52°
Sunny now Dew point 29° · NNW 14 mph · high 51°
City of Norcross River Interstate 2 miles
Explore the plate Order a print

The Norcross plate. Relief from Copernicus GLO-30; rivers and lakes from USGS NHD; watersheds from the USGS Watershed Boundary Dataset; roads and city limits from Census TIGER 2024.

MILE1
TODAY

Today in Norcross

NWS forecast and National Blend of Models · updated 4:00 PM EST
RIGHT NOW De Kalb-Peachtree Airport (KPDK) · 3:53 PM
Sunny
52° Sunny Feels like 52° · high of 51° near 4 PM
WindNNW 14 mphno gusts
Humidity41%rising to 89% by morning
Pressure30.14 in →steady
Visibility10 mihaze-free
CloudsClear
UV index—no forecast
Dew point 29° · Dry37° by Tuesday: more humid
DryComfortableStickyMuggyOppressive
NEXT RAIN
Clear
Not this weeknone in the forecast for a week
LIKELY AMOUNT—nothing expected
LAST RAINNov. 50.11 in · 9 dry days
ALERTS & OUTLOOKS
! Freeze WarningFreeze Warning issued November 14 at 2:23PM EST until November 15 at 9:00AM EST by NWS Peachtree City GA
NWS Peachtree City and the Storm Prediction Center · checked 4:45 PM
SUN & MOON
↑ 7:08 AM5:34 PM ↓
10 h 26 m of daylight, 2 minutes less than yesterday
Waxing crescent, 26% lit. Next full moon: Nov. 24.
AIR & POLLEN
34
GOODAir quality index · ozone
Tomorrow: 55, moderate. No pollen source yet.

The next three days, hour by hour

Sky: clear, cloudy, night Rain likely National Blend of Models
SATURDAY, NOV. 14
SUNDAY, NOV. 15
MONDAY, NOV. 16
TUESDAY, NOV. 17
4p
7p
10p
1a
4a
7a
10a
1p
4p
7p
10p
1a
4a
7a
10a
1p
4p
7p
10p
1a
4a
7a
10a
1p
clear day
clear night
clear night
clear night
clear night
mostly sunny
mostly sunny
mostly sunny
mostly sunny
mostly clear night
clear night
mostly clear night
mostly clear night
mostly sunny
mostly sunny
mostly sunny
clear day
clear night
clear night
clear night
clear night
clear day
clear day
clear day
TEMPERATURE °F
51°
32°
58°
36°
58°
37°
CHANCE OF RAIN
50%
WIND, MPH
9
7
3
0
0
0
0
0
0
0
0
0
2
5
7
5
2
0
0
1
4
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7
HOW IT FEELS · DEW POINT
Dry: dew points 27 to 37°

The next seven days, and how sure we are

Forecast, with the range 8 in 10 ensemble members agree on Normal, about 63° / 41°
SAT Nov. 14 Sunny Sunny
51° 29°
0% rain — NNW 9 A
SUN Nov. 15 Mostly sunny Mostly sunny
58° 33°
0% rain — N 0 B
MON Nov. 16 Mostly sunny Mostly sunny
59° 34°
0% rain — E 5 B
TUE Nov. 17 Sunny Sunny
61° 34°
0% rain — E 3 B
WED Nov. 18 Sunny Sunny
64° 37°
0% rain — E 5 A
THU Nov. 19 Mostly sunny Mostly sunny
68° 40°
0% rain — ENE 5 B
FRI Nov. 20 Mostly sunny Mostly sunny
70° 42°
0% rain — ENE 5 B
How sure are we? AModels agree: highs within 4° BSome spread: within 8° CWide spread: check back
Range from the National Blend of Models percentiles · graded on Forecast Scores
AIR MAIL

Where today’s air came from

The air arriving over Norcross about 5,000 feet above the ground was over the central Plains three days ago, and over the Ohio Valley a day ago, about 1,040 miles back along its path. Near the ground the air came from the Carolinas; at 10,000 feet, from the Pacific off the Northwest. Traced back 72 hours through NOAA’s hourly RAP analyses, nine paths at each of three heights.

MILE2
THE GROUND

What Norcross stands on

Norcross’s center stands about 1,060 ft above sea level. Within three miles the land runs from 920 ft to 1,100 ft, a difference of 180 ft: gently rolling country. The highest named summit within 15 miles is Stone Mountain, about 1,670 ft, 10 miles south-southeast.

Under the town center the state geologic map shows Granitic Gneiss undifferentiated, from the Precambrian to Paleozoic.

The section below crosses 10 rock units mapped at the surface.

Stone Mountain to Alpharetta, cut in half

A section south to north, 24 miles through the town center
1,000 ft1,250 ft1,500 ft NORCROSS1,060 ftStone Mountain1,670 ftPeachtree Corners1,010 ftChattahoochee Riverabout 930 ftAlpharetta1,060 ft ← S · Stone MountainAlpharetta · N →

Heights every 0.1 mile from the Copernicus GLO-90 surface model; vertical exaggeration about 23×. The colored band under the surface is the rock the state geologic map shows at the surface, not a picture of what lies beneath.

Rock at the surface along the line

Biotitic Gneiss / Mica Schist/ Amphibolite

Amphibolite, biotite-gneiss, mica-schist. Age: Precambrian to Paleozoic. About 10 mi of the line.

Granitic Gneiss undifferentiated

Gneiss. Age: Precambrian to Paleozoic. About 3 mi of the line.

Granite Gneiss/ Amphibolite

Gneiss, amphibolite. Age: Precambrian to Paleozoic. About 2 mi of the line.

Aluminous Schist

Schist. Age: Precambrian to Paleozoic. About 2 mi of the line.

Non-porphyritic granite

Granite. Age: Precambrian to Paleozoic. About 2 mi of the line.

Metagraywacke/ Mica Schist

Metagraywacke, mica-schist. Age: Precambrian to Paleozoic. About 1 mi of the line.

From the USGS State Geologic Map Compilation (Horton and others, 2017), the states’ geologic maps joined at a common scale. 4 smaller units along the line are not listed.

Heights from Copernicus GLO-90 (a surface model: it includes buildings and tree canopy); summits from USGS GNIS; rivers from USGS NHDPlus HR; rock from the USGS State Geologic Map Compilation.
MILE3
THE WATER

Where Norcross’s rain goes: two seas

Norcross straddles the Eastern Continental Divide. Rain on the northwest side runs to the Gulf of America; most of the rest goes to the Atlantic Ocean.

From the center of town, a raindrop reaches the Atlantic Ocean by way of Beaver Ruin Creek, Sweetwater Creek, the Yellow, the Ocmulgee and the Altamaha: about 440 river miles. One that lands on the northwest side reaches the Gulf of America by way of the Chattahoochee and the Apalachicola: about 430 river miles.

FROM THE CITY CENTER, TO SCALE
Norcross≈ 440 mi · the Atlantic Ocean
FROM THE NORTHWEST SIDE, TO SCALE
Norcross≈ 430 mi · the Gulf of America
FROM THE CENTER OF NORCROSS ≈ 440 mi to the Atlantic Ocean Beaver Ruin Creek → Sweetwater Creek → Yellow → Ocmulgee → Altamaha
NORTHWEST SIDE ≈ 430 mi to the Gulf of America Chattahoochee → Apalachicola

Lake on the way: Jackson Lake.

240 miles of the trip are on the Ocmulgee.

Traced down the USGS NHDPlus V2.1 river network from the Census center point of Norcross; river miles along the main stem, rounded.

MILE7
ON THE NETWORK

Around Norcross on the Forecast Network

Neighboring plates

Atlanta GA · 17 MI 17 miles southwest South Fulton GA · 30 MI 30 miles southwest Columbus GA · 106 MI 106 miles south Augusta GA · 129 MI 129 miles east Knoxville TN · 141 MI 141 miles north Huntsville AL · 151 MI 151 miles west
FORECASTCITY
Map of Norcross, Georgia. Explore the plate
GEORGIA · GWINNETT

Norcross

18,902 people, 1,060 ft above sea level in Gwinnett County.

1,060 ftElevation
18,902People
6 sq miLand
Sunny 52°
SunnyDew point 29°
1

Today in Norcross

NEXT 15 HOURS
Now clear day 51° 0%
7p clear night 44° 0%
10p clear night 39° 0%
1a clear night 36° 0%
4a clear night 33° 0%
7a mostly sunny 32° 0%
Clear
NEXT RAINNone this week
→
Sat0%
Sunny Sunny
29
51
A
Sun0%
Mostly sunny Mostly sunny
33
58
B
Mon0%
Mostly sunny Mostly sunny
34
59
B
Tue0%
Sunny Sunny
34
61
B
Wed0%
Sunny Sunny
37
64
A
Thu0%
Mostly sunny Mostly sunny
40
68
B
Fri0%
Mostly sunny Mostly sunny
42
70
B
Letters show how sure the forecast is: A, models agree; B, some spread; C, check back. Sample data.
2

What Norcross stands on

Norcross’s center stands about 1,060 ft above sea level. Within three miles the land runs from 920 ft to 1,100 ft, a difference of 180 ft: gently rolling country. The highest named summit within 15 miles is Stone Mountain, about 1,670 ft, 10 miles south-southeast.

Norcross, south to north Norcross1,060 ftChattahoochee Riverabout 930 ft ← SN → 24 miles through the town center; vertical exaggeration about 44×. Colors: rock at the surface.
Elevation, center1,060 ft
Within 3 miles920 to 1,100 ft
Lie of the landGently rolling (180 ft of relief)
High point nearbyStone Mountain, 1,670 ft, 10 mi south-southeast
Rock at the surfaceGranitic Gneiss undifferentiated
Its agePrecambrian to Paleozoic
3

Where the rain goes

FROM THE CENTER OF NORCROSS≈ 440 mito the Atlantic OceanBeaver Ruin Creek → Sweetwater Creek → Yellow → Ocmulgee → Altamaha
NORTHWEST SIDE≈ 430 mito the Gulf of AmericaChattahoochee → Apalachicola

Norcross straddles the Eastern Continental Divide. Rain on the northwest side runs to the Gulf of America; most of the rest goes to the Atlantic Ocean.

Lake on the way: Jackson Lake.

240 miles of the trip are on the Ocmulgee.