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Shaded-relief map of Sandy Lake, Pennsylvania: rivers, roads, the city limits and where the water drains.
PENNSYLVANIA · MERCER COUNTY

Sandy Lake

1,186 people, 1,170 ft above sea level in Mercer County.

1,170 ftElevation, city center
1,186People, 2024 estimate
24 sq miLand area
Rain 37°
Rain now Dew point 36° · W 8 mph · high 39°
City of Sandy Lake River Interstate 2 miles
Explore the plate Order a print

The Sandy Lake 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 Sandy Lake

NWS forecast and National Blend of Models · updated 7:00 PM EST
RIGHT NOW Venango Regional Airport (KFKL) · 8:08 PM
Rain
37° Rain Feels like 31° · high of 39° near 8 PM
WindW 8 mphno gusts
Humidity93%rising to 100% by morning
Pressure30.04 in →steady
Visibility2 mifog or heavy haze
CloudsClear
UV index—no forecast
Dew point 36° · Dryabout the same for three days
DryComfortableStickyMuggyOppressive
NEXT RAIN
Rain
Tonight, about 8 PMin about 1 hours · 50% chance · rain
LIKELY AMOUNT—amounts come within 3 days
LAST RAINNov. 120.4 in · 2 dry days
ALERTS & OUTLOOKS
No watches or warnings for Mercer County
NWS Pittsburgh and the Storm Prediction Center · checked 8:17 PM
SUN & MOON
↑ 7:07 AM5:02 PM ↓
9 h 54 m of daylight, 2 minutes less than yesterday
Waxing crescent, 27% lit. Next full moon: Nov. 24.
AIR & POLLEN
20
GOODAir quality index · ozone
Tomorrow: 20, good. 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
8p
11p
2a
5a
8a
11a
2p
5p
8p
11p
2a
5a
8a
11a
2p
5p
8p
11p
2a
5a
8a
11a
2p
5p
rain
mostly cloudy night
mostly cloudy night
mostly cloudy night
mostly cloudy day
mostly cloudy day
mostly cloudy day
mostly cloudy night
partly cloudy night
mostly cloudy night
mostly cloudy night
mostly cloudy night
mostly cloudy day
mostly cloudy day
mostly cloudy day
mostly cloudy night
partly cloudy night
mostly clear night
mostly clear night
mostly clear night
mostly sunny
mostly sunny
clear day
clear night
TEMPERATURE °F
39°
35°
41°
36°
45°
29°
49°
CHANCE OF RAIN
50% · 0.06 in Saturday evening 50%
WIND, MPH
10
8
7
7
8
9
8
5
3
2
3
3
5
6
5
2
0
0
2
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4
5
5
3
HOW IT FEELS · DEW POINT
Dry: dew points 28 to 38°

The next seven days, and how sure we are

Forecast, with the range 8 in 10 ensemble members agree on Normal, about 80° / 62°
SAT Nov. 14 Chance of showers Chance of showers
39° 31°
50% rain — WNW 9 A
SUN Nov. 15 Mostly cloudy Mostly cloudy
44° 32°
10% rain — NNW 8 A
MON Nov. 16 Mostly cloudy Mostly cloudy
47° 26°
0% rain — NW 5 A
TUE Nov. 17 Sunny Sunny
50° 27°
0% rain — SW 2 B
WED Nov. 18 Mostly sunny Mostly sunny
53° 29°
0% rain — S 3 B
THU Nov. 19 Partly cloudy Partly cloudy
56° 37°
0% rain — SSW 6 C
FRI Nov. 20 Mostly sunny Mostly sunny
58° 38°
0% rain — WSW 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 Sandy Lake about 5,000 feet above the ground was over British Columbia three days ago, and over the Great Lakes a day ago, about 2,450 miles back along its path. Near the ground the air came from British Columbia; at 10,000 feet, from the Gulf of Alaska. It feels dry all the same. Traced back 72 hours through NOAA’s hourly RAP analyses and the GFS beyond them, nine paths at each of three heights.

THIS WEEK, FOUR YEARS AGO Nov. 11–12, 2022

The wettest two days this week has seen

3.01 inches of rain fell in two days, the most for this week of the year since records began in 1897. The next wettest, 2.84 inches, fell in 1927.

2.84″
3.01″
19272022
Source: NOAA RCC-ACIS, the Franklin record since 1897.
MILE2
THE GROUND

What Sandy Lake stands on

Sandy Lake’s center stands about 1,170 ft above sea level. Within three miles the land runs from 1,160 ft to 1,580 ft, a difference of 420 ft: hilly country. The highest named summit within 15 miles is Round Knob, about 1,640 ft, 14 miles north.

The section below crosses 5 rock units mapped at the surface.

Otter Creek to Kennerdell, cut in half

A section northwest to southeast, 24 miles through the town center
1,000 ft1,200 ft1,400 ft SANDY LAKE1,170 ftLow point1,010 ftPerry1,320 ftMineral1,330 ftHigh point of the line1,570 ft ← NW · Otter CreekKennerdell · SE →

Heights every 0.1 mile from the Copernicus GLO-90 surface model; vertical exaggeration about 34×. 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

Pottsville Formation

Sandstone, conglomerate. Age: Carboniferous, 299 to 324 million years old. About 13 mi of the line.

Cuyahoga Group

Siltstone, shale. Age: Carboniferous, 324 to 359 million years old. About 5 mi of the line.

Shenango Formation

Sandstone. Age: Carboniferous, 324 to 359 million years old. About 5 mi of the line.

Allegheny Formation

Sandstone. Age: Carboniferous, 299 to 324 million years old. About 1 mi of the line.

Berea Sandstone through Venango Formation, undivided

Shale. Age: Late Devonian, 359 to 384 million years old. About 0.3 mi of the line.

From the USGS State Geologic Map Compilation (Horton and others, 2017), the states’ geologic maps joined at a common scale.

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 Sandy Lake’s rain goes

A raindrop that lands in Sandy Lake reaches the Gulf of America by way of Sandy Creek, the Allegheny, the Ohio and the Mississippi: about 2,080 river miles.

THE WAY DOWN, TO SCALE
Sandy Lake≈ 2,080 mi · the Gulf of America
FROM THE CENTER OF SANDY LAKE ≈ 2,080 mi to the Gulf of America Sandy Creek → Allegheny → Ohio → Mississippi

970 miles of the trip are on the Ohio.

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

MILE5
THE ALMANAC

Sandy Lake’s year

1991–2020 normals · records since 1897 · Franklin, 14 mi east-northeast

Sandy Lake has a warm-summer humid continental climate. Summer afternoons average 83° in July; winter nights fall to about 18° in January. A normal year brings about 54 inches of snow; with the rain, that comes to about 46 inches of water.

34°18°36°19°46°25°60°35°71°46°79°55°83°60°81°58°74°52°61°41°49°32°38°24° JANFEBMARAPRMAYJUNJULAUGSEPOCTNOVDEC 12 TODAY SANDY LAKE 46.3 in rain and snowmelt
Normal high to low, by month Record high to low, by day Rain by month Freezing
July, average83° / 60°high / low, the warmest month
January, average34° / 18°high / low, the coldest month
Rain and melted snow46.3 inwettest months: July and June
Snow a year53.7 insnowiest: January
Hottest on record106°FJuly 15, 1936
Coldest on record−30°FJanuary 13, 1912
Wettest day on record5.30 inAugust 14, 1994
Snowiest day on record18.0 inNovember 25, 1950
90° days a year11none reach 100°
Nights at or below 32°143and 37 days that stay below freezing
Climate typeWarm-summer humid continentalKöppen Dfb

AROUND THE RING

1Freeze seasonfrom the first fall freeze, about Oct. 18, to the last in spring, about May 7 (median dates)
2Lows below freezingNov. 12 to April 8; normal lows fall below 32°
NOVEMBER 14 IN THE RECORD

On November 14 Sandy Lake normally reaches 50° and falls to 32°. The record high is 72°, in 1912; the record low 10°, in 1905. The most rain on this date, 1.54 in, fell in 1972.

MONTH BY MONTH
JanFebMarAprMayJunJulAugSepOctNovDec
Normal high34°36°46°60°71°79°83°81°74°61°49°38°
Normal low18°19°25°35°46°55°60°58°52°41°32°24°
Rain and melt, in3.272.663.364.154.004.865.324.243.943.763.413.36
Snow, inches17.911.58.91.10.00.00.00.00.00.02.611.7
Record high73° (1950)74° (2017)90° (2003)93° (1914)97° (1911)101° (1934)106° (1936)104° (1918)100° (1932)90° (1922)81° (1961)74° (1982)
Record low−30° (1912)−27° (1963)−22° (1934)0° (1923)20° (1966)28° (1908)0° (2003)0° (2003)23° (1899)15° (1965)0° (1904)−14° (1950)

Normals 1991–2020 and records since 1897 at Franklin, 14 miles east-northeast, 160 ft lower. NOAA, through RCC-ACIS.

MILE7
ON THE NETWORK

Around Sandy Lake on the Forecast Network

Neighboring plates

Youngstown OH · 35 MI 35 miles southwest Warren OH · 40 MI 40 miles west Pittsburgh PA · 62 MI 62 miles south Cleveland OH · 85 MI 85 miles west Buffalo NY · 124 MI 124 miles northeast Detroit MI · 173 MI 173 miles northwest
FORECASTCITY
Map of Sandy Lake, Pennsylvania. Explore the plate
PENNSYLVANIA · MERCER

Sandy Lake

1,186 people, 1,170 ft above sea level in Mercer County.

1,170 ftElevation
1,186People
24 sq miLand
Rain 37°
RainDew point 36°
1

Today in Sandy Lake

NEXT 15 HOURS
Now rain 39° 50%
11p mostly cloudy night 37° 11%
2a mostly cloudy night 36° 5%
5a mostly cloudy night 35° 2%
8a mostly cloudy day 35° 1%
11a mostly cloudy day 41° 2%
Rain
NEXT RAINTonight about 8 PM · 50%
→
Sat50%
Chance of showers Chance of showers
31
39
A
Sun10%
Mostly cloudy Mostly cloudy
32
44
A
Mon0%
Mostly cloudy Mostly cloudy
26
47
A
Tue0%
Sunny Sunny
27
50
B
Wed0%
Mostly sunny Mostly sunny
29
53
B
Thu0%
Partly cloudy Partly cloudy
37
56
C
Fri0%
Mostly sunny Mostly sunny
38
58
B
Letters show how sure the forecast is: A, models agree; B, some spread; C, check back. Sample data.
THIS WEEK, FOUR YEARS AGO · NOV. 11–12, 2022

3.01 inches in two days, the most for this week since 1897.

2

What Sandy Lake stands on

Sandy Lake’s center stands about 1,170 ft above sea level. Within three miles the land runs from 1,160 ft to 1,580 ft, a difference of 420 ft: hilly country. The highest named summit within 15 miles is Round Knob, about 1,640 ft, 14 miles north.

Sandy Lake, northwest to southeast Sandy Lake1,170 ft ← NWSE → 24 miles through the town center; vertical exaggeration about 65×. Colors: rock at the surface.
Elevation, center1,170 ft
Within 3 miles1,160 to 1,580 ft
Lie of the landHilly (420 ft of relief)
High point nearbyRound Knob, 1,640 ft, 14 mi north
5

Sandy Lake’s year

Sandy Lake has a warm-summer humid continental climate. Summer afternoons average 83° in July; winter nights fall to about 18° in January. A normal year brings about 54 inches of snow; with the rain, that comes to about 46 inches of water.

JANFEBMARAPRMAYJUNJULAUGSEPOCTNOVDEC 12 46.3 in
July, average83° / 60° · high / low, the warmest month
January, average34° / 18° · high / low, the coldest month
Rain and melted snow46.3 in · wettest months: July and June
Snow a year53.7 in · snowiest: January
Hottest on record106°F · July 15, 1936
Coldest on record−30°F · January 13, 1912
Wettest day on record5.30 in · August 14, 1994
Snowiest day on record18.0 in · November 25, 1950
90° days a year11 · none reach 100°
Nights at or below 32°143 · and 37 days that stay below freezing
Climate typeWarm-summer humid continental · Köppen Dfb
1Freeze season · from the first fall freeze, about Oct. 18, to the last in spring, about May 7 (median dates)
2Lows below freezing · Nov. 12 to April 8; normal lows fall below 32°
NOVEMBER 14 IN THE RECORD

On November 14 Sandy Lake normally reaches 50° and falls to 32°. The record high is 72°, in 1912; the record low 10°, in 1905. The most rain on this date, 1.54 in, fell in 1972.

Normals 1991–2020 and records since 1897 at Franklin, 14 miles east-northeast, 160 ft lower. NOAA, through RCC-ACIS.
3

Where the rain goes

≈ 2,080 mito the Gulf of AmericaSandy Creek → Allegheny → Ohio → Mississippi

A raindrop that lands in Sandy Lake reaches the Gulf of America by way of Sandy Creek, the Allegheny, the Ohio and the Mississippi: about 2,080 river miles.

970 miles of the trip are on the Ohio.