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

Prospect

1,082 people, 1,320 ft above sea level in Butler County.

1,320 ftElevation, city center
1,082People, 2024 estimate
4 sq miLand area
Clear 39°
Clear now Dew point 35° · W 13 mph · high 37°
City of Prospect River Interstate 2 miles
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The Prospect 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 Prospect

NWS forecast and National Blend of Models · updated 6:00 PM EST
RIGHT NOW Pittsburgh/Butler Regional Airport (KBTP) · 5:56 PM
Clear
39° Clear Feels like 31° · high of 37° near 6 PM
WindW 13 mphno gusts
Humidity86%rising to 100% by morning
Pressure30.06 in →steady
Visibility10 mihaze-free
CloudsClear
UV index—no forecast
Dew point 35° · Dryabout the same for three days
DryComfortableStickyMuggyOppressive
NEXT RAIN
Mostly cloudy
Tonight, around midnightin about 5 hours · 36% chance · rain
LIKELY AMOUNT—amounts come within 3 days
LAST RAINNov. 70.05 in · 7 dry days
ALERTS & OUTLOOKS
No watches or warnings for Butler County
NWS Pittsburgh and the Storm Prediction Center · checked 6:47 PM
SUN & MOON
↑ 7:06 AM5:03 PM ↓
9 h 56 m of daylight, 2 minutes less than yesterday
Waxing crescent, 26% lit. Next full moon: Nov. 24.
AIR & POLLEN
19
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
6p
9p
Mid
3a
6a
9a
Noon
3p
6p
9p
Mid
3a
6a
9a
Noon
3p
6p
9p
Mid
3a
6a
9a
Noon
3p
mostly cloudy night
mostly cloudy night
rain
rain
mostly cloudy day
mostly cloudy day
mostly cloudy day
mostly cloudy day
partly cloudy night
mostly cloudy night
mostly cloudy night
mostly cloudy night
mostly cloudy day
mostly cloudy day
mostly cloudy day
mostly cloudy day
partly cloudy night
mostly clear night
mostly clear night
mostly clear night
partly cloudy day
mostly sunny
mostly sunny
clear day
TEMPERATURE °F
37°
36°
44°
35°
45°
28°
CHANCE OF RAIN
36% · 0.06 in Sunday overnight 50%
WIND, MPH
12
10
8
7
7
9
10
9
5
0
0
0
0
5
6
6
0
0
0
0
0
3
6
2
HOW IT FEELS · DEW POINT
Dry: dew points 28 to 39°

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 Mostly cloudy Mostly cloudy
37° 32°
20% rain — W 11 A
SUN Nov. 15 Chance of showers; warmer Chance of showers; warmer
46° 32°
40% rain — NW 9 A
MON Nov. 16 Mostly cloudy Mostly cloudy
48° 25°
0% rain — NW 4 A
TUE Nov. 17 Partly cloudy Partly cloudy
52° 26°
0% rain — SW 5 A
WED Nov. 18 Sunny Sunny
55° 27°
0% rain — S 5 B
THU Nov. 19 Mostly sunny Mostly sunny
58° 36°
0% rain — SSW 5 B
FRI Nov. 20 Mostly sunny Mostly sunny
59° 37°
0% rain — WSW 5 C
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 Prospect about 5,000 feet above the ground was over British Columbia three days ago, and over the Great Lakes a day ago, about 2,290 miles back along its path. Near the ground the air came from British Columbia; at 10,000 feet, from the open Pacific. 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 IN 2010 Nov. 12, 2010

The hottest this week has been

78° on Nov. 12, 2010, the hottest reading for this week of the year since 1949. Next is 75° in 2009.

75°
78°
20092010
Source: NOAA RCC-ACIS, the Slippery Rock 1 SSW record since 1949.
MILE2
THE GROUND

What Prospect stands on

Prospect’s center stands about 1,320 ft above sea level. Within three miles the land runs from 1,040 ft to 1,480 ft, a difference of 440 ft: hilly country.

Under the town center the state geologic map shows Glenshaw Formation (shale), from the Carboniferous, 299 to 324 million years old.

The section below crosses 3 rock units mapped at the surface.

Callery to Slippery Rock, cut in half

A section south to north, 24 miles through the town center
1,000 ft1,250 ft1,500 ft PROSPECT1,320 ftConnoquenessing Creekabout 950 ftHigh point of the line1,580 ftSlippery Rock Creekabout 1,160 ftSlippery Rock1,460 ft ← S · CallerySlippery Rock · N →

Heights every 0.1 mile from the Copernicus GLO-90 surface model; vertical exaggeration about 29×. 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

Glenshaw Formation

Shale. Age: Carboniferous, 299 to 324 million years old. About 15 mi of the line.

Allegheny Formation

Sandstone. Age: Carboniferous, 299 to 324 million years old. About 9 mi of the line.

Pottsville Formation

Sandstone, conglomerate. Age: Carboniferous, 299 to 324 million years old. About 0.6 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 Prospect’s rain goes

A raindrop that lands in Prospect reaches the Gulf of America by way of Crab Run, Little Connoquenessing Creek, Connoquenessing Creek, the Beaver, the Ohio and the Mississippi: about 1,970 river miles.

THE WAY DOWN, TO SCALE
Prospect≈ 1,970 mi · the Gulf of America
FROM THE CENTER OF PROSPECT ≈ 1,970 mi to the Gulf of America Crab Run → Little Connoquenessing Creek → Connoquenessing Creek → Beaver → Ohio → Mississippi

970 miles of the trip are on the Mississippi.

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

MILE5
THE ALMANAC

Prospect’s year

1991–2020 normals · records since 1949 · Slippery Rock 1 SSW, 11 mi north

Prospect has a warm-summer humid continental climate. Summer afternoons average 81° in July; winter nights fall to about 17° in January. About 45 inches of rain fall in a normal year.

33°17°37°18°46°25°59°35°69°45°77°54°81°58°80°56°74°50°62°39°49°31°38°23° JANFEBMARAPRMAYJUNJULAUGSEPOCTNOVDEC 12 TODAY PROSPECT 45.2 in rain a year
Normal high to low, by month Record high to low, by day Rain by month Freezing
July, average81° / 58°high / low, the warmest month
January, average33° / 17°high / low, the coldest month
Rain a year45.2 inwettest months: June and July
Hottest on record102°FJuly 23, 2011
Coldest on record−28°FJanuary 19, 1994
Wettest day on record4.71 inSeptember 8, 2004
Snowiest day on record17.0 inNovember 25, 1950
90° days a year13very few reach 100°
Nights at or below 32°143and 31 days that stay below freezing
Climate typeWarm-summer humid continentalKöppen Dfb

AROUND THE RING

1Freeze seasonfrom the first fall freeze, about Oct. 12, to the last in spring, about May 10 (median dates)
2Lows below freezingNov. 8 to April 9; normal lows fall below 32°
NOVEMBER 14 IN THE RECORD

On November 14 Prospect normally reaches 50° and falls to 31°. The record high is 75°, in 2009; the record low 8°, in 1986. The most rain on this date, 1.15 in, fell in 1972.

MONTH BY MONTH
JanFebMarAprMayJunJulAugSepOctNovDec
Normal high33°37°46°59°69°77°81°80°74°62°49°38°
Normal low17°18°25°35°45°54°58°56°50°39°31°23°
Rain, inches3.472.693.413.944.144.764.634.024.073.453.473.19
Record high72° (1950)74° (2017)87° (2012)89° (2009)96° (2015)99° (1952)102° (2011)99° (1953)99° (1953)91° (2007)81° (1961)74° (1982)
Record low−28° (1994)−21° (1979)−10° (1993)9° (1987)22° (1983)30° (1990)37° (1979)28° (1982)27° (1991)12° (1975)−1° (1958)−20° (1989)

Normals 1991–2020 and records since 1949 at Slippery Rock 1 SSW, 11 miles north. NOAA, through RCC-ACIS.

MILE7
ON THE NETWORK

Around Prospect on the Forecast Network

Neighboring plates

Pittsburgh PA · 32 MI 32 miles south Youngstown OH · 34 MI 34 miles northwest Akron OH · 78 MI 78 miles west Cleveland OH · 94 MI 94 miles northwest Detroit MI · 188 MI 188 miles northwest Toledo OH · 191 MI 191 miles west
FORECASTCITY
Map of Prospect, Pennsylvania. Explore the plate
PENNSYLVANIA · BUTLER

Prospect

1,082 people, 1,320 ft above sea level in Butler County.

1,320 ftElevation
1,082People
4 sq miLand
Clear 39°
ClearDew point 35°
1

Today in Prospect

NEXT 15 HOURS
Now mostly cloudy night 37° 0%
9p mostly cloudy night 35° 22%
12a rain 36° 35%
3a rain 36° 36%
6a mostly cloudy night 36° 13%
9a mostly cloudy day 39° 1%
Mostly cloudy
NEXT RAINTonight around midnight · 36%
→
Sat20%
Mostly cloudy Mostly cloudy
32
37
A
Sun40%
Chance of showers; warmer Chance of showers; warmer
32
46
A
Mon0%
Mostly cloudy Mostly cloudy
25
48
A
Tue0%
Partly cloudy Partly cloudy
26
52
A
Wed0%
Sunny Sunny
27
55
B
Thu0%
Mostly sunny Mostly sunny
36
58
B
Fri0%
Mostly sunny Mostly sunny
37
59
C
Letters show how sure the forecast is: A, models agree; B, some spread; C, check back. Sample data.
THIS WEEK IN 2010 · NOV. 12, 2010

78°, the hottest this week of the year has been since 1949.

2

What Prospect stands on

Prospect’s center stands about 1,320 ft above sea level. Within three miles the land runs from 1,040 ft to 1,480 ft, a difference of 440 ft: hilly country.

Prospect, south to north Prospect1,320 ftConnoquenessing Creekabout 950 ftSlippery Rock Creekabout 1,160 ft ← SN → 24 miles through the town center; vertical exaggeration about 56×. Colors: rock at the surface.
Elevation, center1,320 ft
Within 3 miles1,040 to 1,480 ft
Lie of the landHilly (440 ft of relief)
Rock at the surfaceGlenshaw Formation
Its ageCarboniferous, 299 to 324 million years old
5

Prospect’s year

Prospect has a warm-summer humid continental climate. Summer afternoons average 81° in July; winter nights fall to about 17° in January. About 45 inches of rain fall in a normal year.

JANFEBMARAPRMAYJUNJULAUGSEPOCTNOVDEC 12 45.2 in
July, average81° / 58° · high / low, the warmest month
January, average33° / 17° · high / low, the coldest month
Rain a year45.2 in · wettest months: June and July
Hottest on record102°F · July 23, 2011
Coldest on record−28°F · January 19, 1994
Wettest day on record4.71 in · September 8, 2004
Snowiest day on record17.0 in · November 25, 1950
90° days a year13 · very few reach 100°
Nights at or below 32°143 · and 31 days that stay below freezing
Climate typeWarm-summer humid continental · Köppen Dfb
1Freeze season · from the first fall freeze, about Oct. 12, to the last in spring, about May 10 (median dates)
2Lows below freezing · Nov. 8 to April 9; normal lows fall below 32°
NOVEMBER 14 IN THE RECORD

On November 14 Prospect normally reaches 50° and falls to 31°. The record high is 75°, in 2009; the record low 8°, in 1986. The most rain on this date, 1.15 in, fell in 1972.

Normals 1991–2020 and records since 1949 at Slippery Rock 1 SSW, 11 miles north. NOAA, through RCC-ACIS.
3

Where the rain goes

≈ 1,970 mito the Gulf of AmericaCrab Run → Little Connoquenessing Creek → Connoquenessing Creek → Beaver → Ohio → Mississippi

A raindrop that lands in Prospect reaches the Gulf of America by way of Crab Run, Little Connoquenessing Creek, Connoquenessing Creek, the Beaver, the Ohio and the Mississippi: about 1,970 river miles.

970 miles of the trip are on the Mississippi.