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York county, PA Weather and Climate Synopsis

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Regional Weather Summary
National Weather Service State College PA
413 AM EDT Fri Aug 18 2017

A cold front will move through the Keystone State today
accompanied by showers and scattered thunderstorms. Some of the
thunderstorms could cause strong damaging wind gusts and heavy
rain, especially over the eastern half of the state. Highs will
range from near 80 over the northwest mountains and Laurel
Highlands to around 90 near Philadelphia.

Showers will taper off this evening and much of the overnight 
will be dry in most areas. Lows will vary from around 60 over the
northwest to a muggy 70 degrees over the southeast. 

Saturday will see increasing clouds as a weak disturbance aloft
races into the state. A few showers will be possible, mainly over
central and western areas in the afternoon. Highs will range from
the upper 70s in the Poconos and the Laurel Highlands to the mid
and upper 80s in the far southeast.

National Ag. Weather Outlook, International Ag. Weather Summary
Current Surface Map, [2nd Source TWC]

Precision Agriculture Weather Forecast For YORK County

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Regional Hourly Observations For YORK County

SWR not available
Current Temperatures, Dewpoint, RH, Wind, Surface 4-Panel
Current Agricultural Weather Conditions in Pennsylvania
Based on observations at 1200pm EDT, Friday August 18, 2017

Across Pennsylvania...temperatures are near 76 degrees west, near 73 degrees central, and near 81 degrees east. Current sky conditions are cloudy west, rain central, and cloudy east. In the west, relative humidity is near 85%, and the dew point is near 71 degrees. In the central part of the state, relative humidity is near 94%, and the dew point is near 72 degrees. In the east, relative humidity is near 82%, and the dew point is near 75 degrees. The livestock heat stress category is no stress west, no stress central, and no stress east. Winds are coming from the southwest at 6 mph in the west, where conditions are favorable for spraying. Winds are coming from the southwest at 8 mph in the central, where conditions are not favorable for spraying due to rain. Winds are coming from the southwest at 12 mph in the east, where conditions are favorable for spraying. Based on current available observations, the highest temperature is 87 degrees at Harrisburg. The lowest temperature is 70 degrees at Johnstown.

Current NOWCAST not available:
Nowcasts are not issued routinely during fair weather. Only when
precipitation or other significant weather is occuring in this county will these
forecasts be issued. Currently, there is no short term forecast in effect.

All NWS Radars (In near-real time), Current Livestock Heat Stress Index (LSI), Current Wind Chill Map
Hazardous Weather Outlook For YORK County,PA

406 AM EDT Fri Aug 18 2017

 DAY ONE  Today and Tonight.

There is a Slight Risk of severe thunderstorms this afternoon into
the evening hours.

 DAYS TWO THROUGH SEVEN  Saturday through Thursday.

The probability for widespread hazardous weather is low.


Spotter activation is not expected at this time.

NWS Severe Weather Map , Convective Outlook

7-Day Forecast For YORK County, PA
Issued at 1037 AM EDT Fri Aug 18 2017

Partly sunny early. A chance of showers with isolated thunderstorms early, then showers and thunderstorms. Some thunderstorms may be severe with damaging winds. Highs in the mid 80s. Southwest winds 5 to 10 mph. Chance of rain near 100 percent.

Mostly cloudy with a chance of showers and thunderstorms in the evening, then partly cloudy after midnight. Patchy fog after midnight. Some thunderstorms may produce damaging winds in the evening. Humid with lows in the mid 60s. West winds around 5 mph. Chance of rain 50 percent.

Patchy fog in the morning. Sunny, humid with highs in the lower 80s. West winds 5 to 10 mph.

Partly cloudy. Lows in the mid 60s. West winds around 5 mph in the evening, becoming light and variable.

Sunny, humid with highs in the mid 80s. Northwest winds around 5 mph.

Mostly clear. Humid with lows in the mid 60s.

Mostly sunny. Humid with highs in the mid 80s.

Partly cloudy. Humid with lows in the upper 60s.

Mostly sunny. Humid with highs in the upper 80s.

Mostly cloudy with a chance of showers and thunderstorms. Warm, humid with lows around 70. Chance of rain 30 percent.

A chance of thunderstorms in the morning. Partly sunny with a chance of showers. Humid with highs in the lower 80s. Chance of rain 40 percent.

Partly cloudy. A chance of showers in the evening. Lows in the lower 60s. Chance of rain 40 percent.

Mostly sunny. Highs in the upper 70s.

12-48 Hr Surface Forecast Maps, TWC 4-Panel Surface Forecast, Fire Danger, Day 1 Precip, Day 2 Precip, Days 1-5 Precip, Severe Weather Pot.-Day 1, Day 2

Medium & Long Range Outlook For Pennsylvania
                 6 TO 10 DAY  8 TO 14 DAY   30 DAY    90 DAY 
                   AUG 23-27 AUG 25-AUG 31    AUG       AUG-OCT                      
                 -----------  -----------  --------  ---------
   Temperature:      Below        Below      Above      Above                      
 Precipitation:      Below        Below     Normal     Normal                      

....  Medium and long range outlooks provided by NCEP/K. Thomas Priddy
5 Day Rainfall Forecast, 6 to 10 Day , 8 to 14 Day , Text, 30-Day Outook, 90-Day Outook, 120-Day Outlook
Historical Weather And Climate Facts For Today

During the late morning hours a severe hailstorm struck southeastern Iowa
completely destroying crops along a path six to ten miles wide and 75 miles
long. The hail also injured and killed poultry and livestock, and caused a
total of 2.5 million dollars damage. The hailstorm flattened fields of corn
to such an extent that many had to leave their farms in search of other
work. It was one of the worst hailstorms of record for the nation. (The
Weather Channel)
Hurricane Alicia, a category 3 storm made landfall near Galveston. Winds 
gusted to 130 mph with a storm surge of 12 feet. 22 tornadoes were spawned. 
Parts of Houston received 11 inches of rain. 12 people died and 1800 were 
injured. Total damage estimated at $3 billion.
(NWS Louisville)
Thirteen cities in the eastern U.S. reported record high temperatures for
the date, including Orlando FL with a reading of 98 degrees, and Portland
ME with a high of 94 degrees. Newark NJ reached 90 degrees for the
thirty-sixth time of the year, their second highest total of record. (The
National Weather Summary)
Twenty-two cities, from the Carolinas to the Upper Ohio Valley, reported
record high temperatures for the date, pushing the total number of daily
record highs since the first of June above the 1100 mark. Afternoon highs
of 102 degrees at Greensboro NC and 105 degrees at Raleigh NC equalled
all-time records. Evening thunderstorms in Montana produced wind gusts to
75 mph at Scobey. (The National Weather Summary) (Storm Data)
Thunderstorms over the Middle Atlantic Coast Region and the Upper Ohio
Valley produced torrential rains in eastern Virginia during the late
morning and afternoon hours. Totals ranged up to twelve inches at Yorktown.
Williamsburg VA was deluged with 10.78 inches of rain between 6 AM and 10
AM, with 6.72 inches reported in just two hours. Flash flooding caused
nearly twelve million dollars damage in Accomack County VA. Early evening
thunderstorms in the Central High Plains Region produced walnut size hail
and wind gusts to 80 mph around Casper WY. Thunderstorms produced locally
heavy rains in the Yellowstone Park area, causing fifteen mudslides. (The
National Weather Summary) (Storm Data)
At 1 pm Bowling Green recorded an exceptionally high dew point of 81 degrees.
(NWS Louisville)

Ag Weather Center, Department of Biosystems & Agricultural Engineering, University of Kentucky