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River Flooding			Wind Chill Advisory	Fire Weather
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Additional Observations

• Rain Gauge Reports (Enhanced Data Display)

How Much Rain Has Fallen? (Enhanced Data Display - Interactive)

Precipitation Forecasts
Day 1	Days 1-2	Day 1-3

0 to 12 hours	12 to 24 hours	24 to 36 hours	36 to 48 hours	48 to 60 hours	60 to 72 hours
Click Here for Precipitation forecasts for the next 7 days

Flash Flood Guidance (FFG) provides a general indication of the amount of rainfall evenly distributed over various durations (in hours), necessary to cause small streams to overflow their natural banks. During heavy rainfall, accurate interpretation of the guidance consists of the combination of rainfall that has already occurred plus any additional rainfall that can be confidently expected to fall over the same location in the immediate future.

It should be noted that FFG values represent estimates of average soil moisture and stream flow conditions. Flooding may occur with less rainfall than indicated in areas of high rainfall intensities, impervious surfaces, or steep slopes.

1 Hour	3 Hour	6 Hour

Day 1 Excessive Rainfall Outlook	Day 2 Excessive Rainfall Outlook	Day 3 Excessive Rainfall Outlook	Middle Atlantic Flood Outlook

Day 1 Precipitation	Day 2 Precipitation	Day 3 Precipitation
Day 4-5 Precipitation	Day 6-7 Precipitation	7-Day Total Precipitation

River Monitor

Hydrographs (showing stages and flows over time) are available through the Advanced Hydrologic Prediction Service (AHPS) by clicking site names.

No Flood Near Flood Minor Flood Moderate Flood Major Flood

River Conditions at: 10:09 AM 04/23/2021 Location Flood Stage (ft.) Observed (ft.) Crest (ft.) Forecast for 8AM Sat. Sun. Mon. Susquehanna River Bloomsburg 19 4.09 4.4 4.3 4.4 - Danville 20 5.40 5.7 5.5 5.7 - Sunbury 24 9.35 9.4 9.3 9.4 - Harrisburg 17 4.78 4.78 4.6 4.6 - Marietta 49 36.88 36.88 36.5 36.5 - Conowingo Dam 23.5 11.65 - - - - Adams County West Conewago Creek at East Berlin - 3.22 - - - - Bermudian Creek near Heidlersburg - 2.16 - - - - Bedford County Raystown Branch Juniata at Bedford - 5.85 - - - - Dunning Creek at Belden 8 1.91 - - - - Wills Creek below Hyndman - 2.10 - - - - Blair County Frankstown Branch of the Juniata at Williamsburg 12 3.43 4.7 3.4 4.7 - Bald Eagle Creek at Tyrone - 0.76 - - - - Cambria County Stonycreek River at Ferndale 19 3.16 - - - - Little Conemaugh River at East Conemaugh 25 8.39 - - - - Conemaugh River at Johnstown 28 2.56 - - - - Glendale Lake at Beaverdam Run - 27.38 - - - - Cameron County Waldy Run near Emporium - 3.49 - - - - Driftwood Branch Sinnemahoning at Sterling Run - -0.36 - - - - Sinnehahoning Creek at Sinnemahoning 17 2.79 3.1 2.8 3.1 - First Fork Sinnemahoning on Stevenson Dam - 922.11 - - - - First Fork Sinnemahoning Creek near Sinnemahoning - 0.31 - - - - Centre County Bald Eagle Creek at Milesburg - 0.33 - - - - Bald Eagle Creek on Sayers Dam - 626.07 - - - - Bald Eagle Creek at Blanchard - 3.53 - - - - Beech Creek at Monument - 6.05 - - - - Marsh Creek at Blanchard - 1.58 - - - - Spring Creek at Houserville - 3.22 - - - - Spring Creek near Axemann - 2.38 - - - - Spring Creek at Milesburg - 4.42 - - - - Clearfield County Sandy Lick Creek at Dubois - 2.01 - - - - WB Susquehanna at Bower Mahaffey - 5.14 - - - - WB Susquehanna on Curwensville Dam - 1162.10 - - - - WB Susquehanna near Curwensville downstream - 3.47 - - - - WB Susquehanna at Hyde - 3.66 - - - - WB Susquehanna at Karthaus 19 2.89 3.4 2.9 3.4 - Clearfield Creek at Dimeling 13 3.94 - - - - Clinton County Bald Eagle Creek near Beech Creek Station 11 6.91 7.0 6.8 7.0 - WB Susquehanna at Renovo 16 2.03 2.1 2.1 2.1 - WB Susquehanna at Lock Haven 21 8.86 8.9 8.9 8.9 - Kettle Creek at Cross Fork - 1.22 - - - - Kettle Creek on Alvin R Bush Dam - 841.28 - - - - Kettle Creek near Westport - 2.59 - - - - Young Womens Creek near Renovo - 1.98 - - - - Columbia County Huntington Creek at Jonestown - 2.23 - - - - Fishing Creek at Grassmere Park - 2.96 - - - - Fishing Creek near Bloomsburg - 2.79 - - - - Cumberland County Big Spring Creek above Big Spring - 1.15 - - - - Conodoguinet Creek near Hogestown 8 2.20 2.3 2.1 2.3 - Mountain Creek near Pine Grove Furnace - 4.47 - - - - Yellow Breeches Creek near Camp Hill 7 1.59 1.8 1.6 1.8 - Dauphin County Swatara Creek near Hershey 7 2.16 2.4 2.1 2.4 - Swatara Creek at Middletown 11 3.58 3.58 3.4 3.4 - Paxton Creek near Glenwood - 2.21 - - - - Conewago Creek near Bellaire - 0.42 - - - - Conewago Creek near Falmouth - 3.90 - - - - Elk County West Branch Clarion River at Wilcox - 1.50 - - - - East Branch Clarion River Lake near Glen Hazel - 1648.05 - - - - Weir 1 at East Branch Clarion River Dam - 27.91 - - - - East Branch Clarion River Lake at Glen Hazel - 1.73 - - - - Clarion River at Johnsonburg 7 1.75 - - - - Clarion River at Ridgway 16 3.23 - - - - Fulton County Tonoloway Creek near Needmore - 3.40 - - - - Huntingdon County Little Juniata River at Spruce Creek 8 2.52 3.2 2.5 3.2 - Aughwick Creek near Three Springs - 3.58 - - - - Aughwick Creek at Shirleysburg 10 3.61 3.7 3.5 3.7 - Juniata River at Huntingdon 12 2.24 2.7 2.2 2.7 - Raystown Branch Juniata on Raystown Lake Dam - 786.07 - - - - Raystown Lake Below Dam - 4.70 - - - - Juniata River at Mapleton Depot 20 4.24 5.0 4.5 5.0 - Juniata County Tuscarora Creek near Port Royal 10 3.92 - - - - Lancaster County Chiques Creek at Manheim 8 1.98 - - - - Little Chiques Creek at Mount Joy 12 0.95 - - - - Cocalico Creek at Ephrata 8 0.83 - - - - Conestoga River at Lancaster 11 3.86 4.1 3.8 4.1 - Big Springs Run near Mylin Corners - 3.78 - - - - Little Conestoga at Flory Mills 10 2.36 - - - - Conestoga River at Conestoga - 2.08 - - - - Pequea Creek at Paradise - 2.58 - - - - Pequea Creek near Ronks - 2.86 - - - - Pequea Creek above Martic Forge - 4.16 - - - - Lebanon County Quittapahilla Creek near Bellegrove - 3.70 - - - - Swatara Creek near Inwood - 3.15 - - - - Swatara Creek at Harper Tavern 9 1.19 1.8 1.2 1.8 - Lycoming County Pine Creek at Cedar Run 12 2.09 2.6 2.2 2.6 - Pine Creek at Jersey Mills - 1.90 - - - - Blockhouse Creek near English Center - 0.90 - - - - Little Pine Creek at Little Pine Dam - 2.81 - - - - Pine Creek near Waterville - 2.60 - - - - WB Susquehanna at Jersey Shore 26 3.35 3.4 3.3 3.4 - WB Susquehanna at Williamsport 20 3.02 3.1 3.0 3.0 - WB Susquehanna near Muncy 20 4.39 - - - - Larrys Creek at Salladsburg - 1.33 - - - - Lycoming Creek at Roaring Branch - 2.11 - - - - Lycoming Creek above Deer Crossing - 1.23 - - - - Lycoming Creek at Ralston Bridge - 1.65 - - - - Lycoming Creek at Bodines - 2.20 - - - - Lycoming Creek near Trout Run - 2.37 - - - - Lycoming Creek at Hepburnville - 1.48 - - - - Lycoming Creek near Williamsport - 2.57 - - - - Loyalsock Creek at Barbours - 27.58 - - - - Loyalsock Creek at Loyalsockville 12 1.97 2.4 1.9 2.4 - Muncy Creek at Glen Mawr - 2.62 - - - - Muncy Creek at Hughsville - 1.02 - - - - Little Muncy Creek at Lairdsville - 1.89 - - - - Muncy Creek at Muncy - 8.50 - - - - McKean County Tunungwant Creek near South Bradford - 0.62 - - - - Allegheny River at Port Allegany - 3.14 - - - - Allegheny River at Eldred 23 3.90 3.9 3.8 3.6 3.5 Kinzua Creek above Guffey - 2.48 - - - - Sevenmile Run near Rasselas - 1.89 - - - - Mifflin County Juniata River at Lewiston 23 4.93 5.2 5.2 5.2 - Kishacoquillas Creek at Reedsville - 3.21 - - - - Montour County Chillisquaque Creek at Washingtonville - 0.91 - - - - Northumberland County WB Susquehanna at Lewisburg 18 3.74 3.8 3.7 3.7 - Perry County Juniata River at Newport 22 4.79 4.8 4.7 4.7 - Bixler Run near Loysville - 3.20 - - - - Shermans Creek at Shermans Dale 9 1.80 2.4 1.8 2.4 - Potter County Oswayo Creek at Shinglehouse - 4.39 - - - - East Fork Sinnemahoning Creek at Wharton Township - 4.02 - - - - First Fork Sinnemahoning Creek at Wharton - 4.40 - - - - Schuylkill County Swatara Creek near Pine Grove - 3.87 - - - - Little Schuylkill River at Tamaqua - 2.47 - - - - Schuylkill River at Landingville 8 3.63 - - - - Somerset County Casselman River at Markleton 9 1.77 - - - - Laurel Hill Creek at Ursina 5 0.00 - - - - Youghigheny Dam Buttonhook 1468 1440.04 - - - - Youghiogheny River at Confluence 12 2.41 3.0 2.3 2.6 2.8 Sullivan County Loyalsock Creek at Forksville - 1.36 - - - - Loyalsock Creek at Hillsgrove - 2.08 - - - - Muncy Creek near Sonestown - 1.23 - - - - Tioga County Tioga River at Mansfield 12 0.58 1.6 0.7 1.6 - Tioga River at Tioga Dam - 1081.53 - - - - Tioga River downstream of dam - 2.13 - - - - Tioga River at Tioga Junction 15 8.03 8.3 8.0 8.3 - Corey Creek near Mainesburg - 1.40 - - - - Crooked Creek at Middlebury Center - 39.67 - - - - Cowanesque River at Westfield - 0.74 - - - - Cowanesque River at Elkland - 16.19 - - - - Cowanesque Dam on Cowanesque - 1080.30 - - - - Cowanesque River near Lawrenceville 13 7.77 7.8 7.8 7.8 - Union County Penns Creek at Penns Creek 8 2.64 3.2 2.6 3.2 - WB Susquehanna River at Allenwood - 9.28 - - - - WB Susquehanna at West Milton 19 3.05 3.1 3.0 3.1 - Warren County Allegheny River on Kinzua Dam 1341 1329.57 - - - - Conewango Creek at Russell 9 3.00 - - - - Allegheny River at Warren 14 3.30 - - - - Brokenstraw Creek at Youngsville - 2.02 - - - - York County West Conewago Creek near Manchester - 3.10 - - - - Codorus Creek at Spring Grove - 1.99 - - - - Codorus Creek on Indian Rock Dam 435 374.89 - - - - Codorus Creek near York - 2.38 - - - -

Additional Resources

• Weather Prediction Center (WPC)
• Middle Atlantic River Forecast Center (MARFC)
• Advanced Hydrologic Prediction Service (AHPS)
• Ensemble River Forecasts

Day 1 Severe Weather Outlook	Day 2 Severe Weather Outlook	Day 3 Severe Weather Outlook	Day 4-8 Severe Weather Outlooks
SPC Day 1 Outlook Narrative	SPC Day 2 Outlook Narrative	SPC Day 3 Outlook Narrative	SPC Day 4-8 Outlook Narrative

	Current Watches	Storm Trend Discussions
	Today's Storm Reports	Yesterday's Storm Reports

SPC Day 1 Thunderstorm Outlook	SPC Day 1 Tornado Outlook	SPC Day 1 Severe Wind Outlook	SPC Day 1 Severe Hail Outlook
SPC Day 1 Thunderstorm Outlook Narrative

Additional Resources

• Storm Prediction Center (SPC)
• SPC Mesoscale Analysis Tool

• Local Winter Weather Page (includes Probabilistic Snowfall Forecasts)
• Latest Snowfall Reports | Analysis

72 Hour Snowfall Forecast	72 Hour Ice Accumulation Forecast	Winter Storm Severity Index

72 Hour Forecast Snow Amounts (12 Hour Periods)
0 to 12 Hours	12 to 24 Hours	24 to 36 Hours	36 to 48 Hours	48 to 60 Hours	60 to 72 Hours
72 Hour Forecast Ice Accumulation (12 Hour Periods)
0 to 12 Hours	12 to 24 Hours	24 to 36 Hours	36 to 48 Hours	48 to 60 Hours	60 to 72 Hours
Winter Storm Severity Index Elements
Snow Amount	Snow Load	Blowing Snow	Flash Freeze	Ice Accumulation	Ground Blizzard

Day 1 Snowfall Greater Than 4"	Day 2 Snowfall Greater Than 4"	Day 3 Snowfall Greater Than 4"
Day 1 Freezing Rain Greater than 1/4"	Day 2 Freezing Rain Greater than 1/4"	Day 3 Freezing Rain Greater than 1/4"

Day 1 Winter Storm Outlook	Day 2 Winter Storm Outlook	Day 3 Winter Storm Outlook	Day 4 Winter Storm Outlook

Day 4 Experimental Winter Weather Outlook	Day 5 Experimental Winter Weather Outlook	Day 6 Experimental Winter Weather Outlook	Day 7 Experimental Winter Weather Outlook

Additional Resources

• National Snowfall Analysis - NOHRSC
• Weather Prediction Center - Winter Weather Desk
• Winter Storm Severity Index
• Pennsylvania Travel Info from 511PA

Forecast Temperatures

Today's High Temperatures	Today's High Temperature Departure From Normal	Tonight's Low Temperatures	Tonight's Low Temperature Departure From Normal
Tomorrow's High Temperatures	Tomorrow's High Temperature Departure From Normal	Tomorrow Night's Low Temperatures	Tomorrow Night's Low Temperature Departure From Normal
Day 3 High Temperatures	Day 3 High Temperature Departure From Normal	Night 3 Low Temperatures	Night 3 Low Temperature Departure From Normal
Click Here for Temperature forecasts for the next 7 days

Forecast Wind/Apparent Temperature Forecasts

Today's Maximum Sustained Wind	Tomorrow's Maximum Sustained Wind	Day 3 Maximum Sustained Wind
Today's Maximum Wind Gust	Tomorrow's Maximum Wind Gust	Day 3 Maximum Wind Gust
Click Here for Wind forecasts for the next 7 days
Today's Minimum Wind Chill	Tomorrow's Minimum Wind Chill	Day 3 Minimum Wind Chill
Today's Maximum Heat Index	Tomorrow's Maximum Heat Index	Day 3 Maximum Heat Index
Click Here for Apparent Temperature forecasts for the next 7 days

Additional Resources

• WPC Maximum Heat Index Forecasts
• NWS State College Wet-Bulb Globe Temperature Page

Seasonal Drought Outlook	NICC Significant Fire Potential Outlook

Additional Information

• Drought Information Portal - Pennsylvania
• Pennsylvania Drought Condition Monitoring - USGS

Day 1 Minimum Relative Humidity	Day 1 Maximum Sustained Wind	Day 1 Maximum Wind Gust
Tomorrow's Minimum Relative Humidity	Tomorrow's Maximum Sustained Wind	Tomorrow's Maximum Wind Gust
Day 3 Minimum Relative Humidity	Day 3 Maximum Sustained Wind	Day 3 Maximum Wind Gust
Click Here for RH, Wind, and Wind Gust forecasts for the next 7 days

Haines Index (Lower Atmospheric Stability)

WFAS Observed Fire Danger Rating

WFAS Forecast Fire Danger Rating

Observed 10 Hour Fuels	Observed 100 Hour Fuels	Observed 1000 Hour Fuels
Forecast 10 Hour Fuels	Forecast 100 Hour Fuels	Forecast 1000 Hour Fuels

SPC Fire Weather Day 1 Outlook	SPC Fire Weather Day 2 Outlook	SPC Fire Weather Day 3-8 Outlook

Additional Resources

• NWS Spot Forecast Monitor
• NWS National Fire Weather Page
• NWS State College Fire Weather Page
• National Interagency Coordination Center Outlooks Page
• Storm Prediction Center - Fire Weather Desk
• HRRR Smoke Visualization

Click Here for The Tropical Weather Outlook Discussion

Additional Resources

• National Hurricane Center
• NWS State College Tropical Page

Days 3-7 Hazards Outlook (WPC)

Days 8-14 Hazards Outlook (CPC)	Days 8-14 Risk of Hazardous Temperatures (CPC)	Days 8-14 Risk of Heavy Precipitation (CPC)

6-10 Day Temperature Outlook (CPC)	6-10 Day Precipitation Outlook (CPC)
8-14 Day Temperature Outlook (CPC)	8-14 Day Precipitation Outlook (CPC)
**Experimental** Week 3-4 Temperature Outlook (CPC)	**Experimental** Week 3-4 Precipitation Outlook (CPC)
One Month Temperature Outlook (CPC)	One Month Precipitation Outlook (CPC)
Three Month Temperature Outlook (CPC)	Three Month Precipitation Outlook (CPC)

Additional Resources

• Climate Prediction Center
• CPC Teleconnections Page

 

Detailed information on the Precipitation Type Graphic can be located here.

 

Additional Resources

• Graphical Point Forecasts Page