Alert archive / Pennsylvania / Freeze Watches in 2021
Freeze Watch 3, NWS State College, PA
NWS State College, PA issued this freeze watch at Apr 29, 2021, 2:33 PM EDT for 5 counties in Pennsylvania. It took effect at May 1, 2021, 12:00 AM EDT. It was in force for .
The area
The counties it named.
The facts
- Issued
- Apr 29, 2021, 2:33 PM EDT (18:33 UTC)
- In effect from
- May 1, 2021, 12:00 AM EDT
- Expired
- Apr 30, 2021, 2:26 PM EDT
- In force
- Issued by
- NWS State College, PA
Counties Cambria County, PA, Centre County, PA, Clearfield County, PA, Somerset County, PA, Warren County, PA
The radar
The State College radar (KCCX), 56 km from the middle of the area, began a volume at 18:35 UTC, the scan nearest the moment this went out.
Open the radar archive at this moment
The archived warnings, watches and discussions in force at that minute are drawn over the scan, this one among them.
The nearest sounding before it
Pittsburgh, PA (KPIT), launched 12:00Z, 6.6 hours before the alert went out and 130 km from the middle of its area. This is the routine balloon launch nearest before it, the air the forecaster had in hand, not a measurement taken for the alert.
- Mixed-layer CAPE
- 51 J/kg
- Mixed-layer CIN
- -2 J/kg
- Mixed-layer LCL
- 579 m above ground
- 0-6 km bulk shear
- 64 kt
- 0-1 km storm-relative helicity
- 100 m²/s²
- 0-3 km storm-relative helicity
- 179 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.4
The text
As transmitted.
568 WWUS71 KCTP 291833 NPWCTP URGENT - WEATHER MESSAGE National Weather Service State College PA 233 PM EDT Thu Apr 29 2021 PAZ004-300645- /O.NEW.KCTP.FZ.A.0003.210501T0400Z-210501T1200Z/ Warren- Including the city of Warren 233 PM EDT Thu Apr 29 2021 ...FREEZE WATCH IN EFFECT FROM LATE FRIDAY NIGHT THROUGH SATURDAY MORNING... * WHAT...Sub-freezing temperatures possible. * WHERE...Warren County. * WHEN...From late Friday night through Saturday morning. * IMPACTS...Freezing temperatures could kill crops and other sensitive vegetation. PRECAUTIONARY/PREPAREDNESS ACTIONS... Take protective measures now as freezing temperatures could damage or kill tender plants and vegetation. Potted plants should be brought inside. The latest forecast information can be found on the NWS State College Facebook page and Twitter @NWSStateCollege, or on the web at weather.gov/ctp. && $$ PAZ035-036-056>059-063>066-300645- /O.CON.KCTP.HW.A.0002.210430T1600Z-210501T0900Z/ Fulton-Franklin-Perry-Dauphin-Schuylkill-Lebanon-Cumberland-Adams- York-Lancaster- Including the cities of McConnellsburg, Chambersburg, Newport, Harrisburg, Hershey, Pottsville, Lebanon, Carlisle, Gettysburg, York, and Lancaster 233 PM EDT Thu Apr 29 2021 ...HIGH WIND WATCH REMAINS IN EFFECT FROM FRIDAY AFTERNOON THROUGH LATE FRIDAY NIGHT... * WHAT...Northwest winds 20 to 30 mph with gusts over 50 mph possible. * WHERE...Fulton, Franklin, Perry, Dauphin, Schuylkill, Lebanon, Cumberland, Adams, York and Lancaster Counties. * WHEN...From Friday afternoon through late Friday night. * IMPACTS...Damaging winds could blow down trees and power lines. Widespread power outages are possible. Travel could be difficult, especially for high profile vehicles. PRECAUTIONARY/PREPAREDNESS ACTIONS... Monitor the latest forecasts and warnings for updates on this situation. Fasten loose objects or shelter objects in a safe location prior to the onset of winds. For high wind safety and preparedness information, visit weather.gov/safety/wind. && $$ For more information from the National Weather Service visit http://weather.gov/ctp
4 follow-up statements
149 WWUS71 KCTP 300021 NPWCTP URGENT - WEATHER MESSAGE National Weather Service State College PA 821 PM EDT Thu Apr 29 2021 PAZ035-036-056>059-063>066-301230- /O.UPG.KCTP.HW.A.0002.210430T1600Z-210501T0900Z/ /O.NEW.KCTP.HW.W.0002.210430T1800Z-210501T0600Z/ Fulton-Franklin-Perry-Dauphin-Schuylkill-Lebanon-Cumberland-Adams- York-Lancaster- Including the cities of McConnellsburg, Chambersburg, Newport, Harrisburg, Hershey, Pottsville, Lebanon, Carlisle, Gettysburg, York, and Lancaster 821 PM EDT Thu Apr 29 2021 ...HIGH WIND WARNING IN EFFECT FROM 2 PM FRIDAY TO 2 AM EDT SATURDAY... * WHAT...Northwest winds 25 to 35 mph with gusts up to 60 mph expected. * WHERE...Fulton, Franklin, Perry, Dauphin, Schuylkill, Lebanon, Cumberland, Adams, York and Lancaster Counties. * WHEN...From 2 PM Friday to 2 AM EDT Saturday. The strongest winds are likely Friday evening. * IMPACTS...Downed tree limbs onto power lines will likely result in scattered power outages. Travel will be difficult, especially for high profile vehicles. PRECAUTIONARY/PREPAREDNESS ACTIONS... People should avoid being outside in forested areas and around trees and branches. If possible, remain in the lower levels of your home during the windstorm, and avoid windows. Use caution if you must drive. For high wind safety information, visit weather.gov/wind. The latest forecast information can be found on the NWS State College Facebook page and Twitter @NWSStateCollege, or on the web at weather.gov/ctp. && $$ PAZ006-011-012-017>019-024>028-033-034-037-041-042-045-046- 049>053-301230- /O.NEW.KCTP.WI.Y.0003.210430T1600Z-210501T0400Z/ Potter-Cameron-Northern Clinton-Clearfield-Northern Centre- Southern Centre-Cambria-Blair-Huntingdon-Mifflin-Juniata-Somerset- Bedford-Tioga-Northern Lycoming-Sullivan-Southern Clinton- Southern Lycoming-Union-Snyder-Montour-Northumberland-Columbia- Including the cities of Coudersport, Emporium, Renovo, DuBois, Clearfield, Philipsburg, State College, Johnstown, Altoona, Huntingdon, Mount Union, Lewistown, Mifflintown, Somerset, Bedford, Mansfield, Wellsboro, Trout Run, Laporte, Lock Haven, Williamsport, Lewisburg, Selinsgrove, Danville, Sunbury, Shamokin, Bloomsburg, and Berwick 821 PM EDT Thu Apr 29 2021 ...WIND ADVISORY IN EFFECT FROM NOON FRIDAY TO MIDNIGHT EDT FRIDAY NIGHT... * WHAT...Northwest winds 20 to 25 mph with gusts around 50 mph expected. * WHERE...Portions of central Pennsylvania. * WHEN...From noon Friday to midnight EDT Friday night. * IMPACTS...Gusty winds could blow around unsecured objects. Tree limbs could be blown down and a few power outages may result. PRECAUTIONARY/PREPAREDNESS ACTIONS... Use extra caution when driving, especially if operating a high profile vehicle. Secure outdoor objects. For high wind safety information, visit weather.gov/wind. The latest forecast information can be found on the NWS State College Facebook page and Twitter @NWSStateCollege, or on the web at weather.gov/ctp. && $$ PAZ004-301230- /O.CON.KCTP.FZ.A.0003.210501T0400Z-210501T1200Z/ Warren- Including the city of Warren 821 PM EDT Thu Apr 29 2021 ...FREEZE WATCH REMAINS IN EFFECT FROM LATE FRIDAY NIGHT THROUGH SATURDAY MORNING... * WHAT...Sub-freezing temperatures possible. * WHERE...Warren County. * WHEN...Late Friday night through Saturday morning. * IMPACTS...Freezing temperatures could kill crops and other sensitive vegetation. PRECAUTIONARY/PREPAREDNESS ACTIONS... Take protective measures now as freezing temperatures could damage or kill tender plants and vegetation. Potted plants should be brought inside. The latest forecast information can be found on the NWS State College Facebook page and Twitter @NWSStateCollege, or on the web at weather.gov/ctp. && $$ For more information from the National Weather Service visit http://weather.gov/ctp
264 WWUS71 KCTP 300646 NPWCTP URGENT - WEATHER MESSAGE National Weather Service State College PA 246 AM EDT Fri Apr 30 2021 PAZ035-036-056>059-063>066-301900- /O.CON.KCTP.HW.W.0002.210430T1800Z-210501T0600Z/ Fulton-Franklin-Perry-Dauphin-Schuylkill-Lebanon-Cumberland-Adams- York-Lancaster- Including the cities of McConnellsburg, Chambersburg, Newport, Harrisburg, Hershey, Pottsville, Lebanon, Carlisle, Gettysburg, York, and Lancaster 246 AM EDT Fri Apr 30 2021 ...HIGH WIND WARNING REMAINS IN EFFECT FROM 2 PM THIS AFTERNOON TO 2 AM EDT SATURDAY... * WHAT...Northwest winds 25 to 35 mph with gusts up to 60 mph expected. * WHERE...Fulton, Franklin, Perry, Dauphin, Schuylkill, Lebanon, Cumberland, Adams, York and Lancaster Counties. * WHEN...From 2 PM Friday to 2 AM EDT Saturday. The strongest winds are likely Friday evening. * IMPACTS...Downed tree limbs onto power lines will likely result in scattered power outages. Travel will be difficult, especially for high profile vehicles. PRECAUTIONARY/PREPAREDNESS ACTIONS... People should avoid being outside in forested areas and around trees and branches. If possible, remain in the lower levels of your home during the windstorm, and avoid windows. Use caution if you must drive. For high wind safety information, visit weather.gov/wind. The latest forecast information can be found on the NWS State College Facebook page and Twitter @NWSStateCollege, or on the web at weather.gov/ctp. && $$ PAZ017-018-024-033-301900- /O.EXA.KCTP.FZ.A.0003.210501T0400Z-210501T1200Z/ /O.CON.KCTP.WI.Y.0003.210430T1600Z-210501T0400Z/ Clearfield-Northern Centre-Cambria-Somerset- Including the cities of DuBois, Clearfield, Philipsburg, Johnstown, and Somerset 246 AM EDT Fri Apr 30 2021 ...WIND ADVISORY REMAINS IN EFFECT FROM NOON TODAY TO MIDNIGHT EDT TONIGHT... ...FREEZE WATCH IN EFFECT FROM LATE TONIGHT THROUGH SATURDAY MORNING... * WHAT...For the Wind Advisory, northwest winds 20 to 25 mph with gusts up to 50 mph expected. For the Freeze Watch, sub-freezing temperatures as low as 30 possible. * WHERE...Clearfield, Northern Centre, Cambria and Somerset Counties. * WHEN...For the Wind Advisory, this afternoon and evening. For the Freeze Watch, Saturday morning. * IMPACTS...Gusty winds could blow around unsecured objects. Tree limbs could be blown down and a few power outages may result. Freezing temperatures could kill crops and other sensitive vegetation. PRECAUTIONARY/PREPAREDNESS ACTIONS... Use extra caution when driving, especially if operating a high profile vehicle. Secure outdoor objects. Take protective measures now as freezing temperatures could damage or kill tender plants and vegetation. Potted plants should be brought inside. For high wind safety information, visit weather.gov/wind. The latest forecast information can be found on the NWS State College Facebook page and Twitter @NWSStateCollege, or on the web at weather.gov/ctp. && $$ PAZ006-011-012-019-025>028-034-037-041-042-045-046-049>053-301900- /O.CON.KCTP.WI.Y.0003.210430T1600Z-210501T0400Z/ Potter-Cameron-Northern Clinton-Southern Centre-Blair-Huntingdon- Mifflin-Juniata-Bedford-Tioga-Northern Lycoming-Sullivan- Southern Clinton-Southern Lycoming-Union-Snyder-Montour- Northumberland-Columbia- Including the cities of Coudersport, Emporium, Renovo, State College, Altoona, Huntingdon, Mount Union, Lewistown, Mifflintown, Bedford, Mansfield, Wellsboro, Trout Run, Laporte, Lock Haven, Williamsport, Lewisburg, Selinsgrove, Danville, Sunbury, Shamokin, Bloomsburg, and Berwick 246 AM EDT Fri Apr 30 2021 ...WIND ADVISORY REMAINS IN EFFECT FROM NOON TODAY TO MIDNIGHT EDT TONIGHT... * WHAT...Northwest winds 20 to 25 mph with gusts around 50 mph expected. * WHERE...Much of central Pennsylvania. * WHEN...From noon Friday to midnight EDT Friday night. * IMPACTS...Gusty winds could blow around unsecured objects. Tree limbs could be blown down and a few power outages may result. PRECAUTIONARY/PREPAREDNESS ACTIONS... Use extra caution when driving, especially if operating a high profile vehicle. Secure outdoor objects. For high wind safety information, visit weather.gov/wind. The latest forecast information can be found on the NWS State College Facebook page and Twitter @NWSStateCollege, or on the web at weather.gov/ctp. && $$ PAZ004-301900- /O.CON.KCTP.FZ.A.0003.210501T0400Z-210501T1200Z/ Warren- Including the city of Warren 246 AM EDT Fri Apr 30 2021 ...FREEZE WATCH REMAINS IN EFFECT FROM LATE TONIGHT THROUGH SATURDAY MORNING... * WHAT...Sub-freezing temperatures possible. * WHERE...Warren County. * WHEN...Late Friday night through Saturday morning. * IMPACTS...Freezing temperatures could kill crops and other sensitive vegetation. PRECAUTIONARY/PREPAREDNESS ACTIONS... Take protective measures now as freezing temperatures could damage or kill tender plants and vegetation. Potted plants should be brought inside. The latest forecast information can be found on the NWS State College Facebook page and Twitter @NWSStateCollege, or on the web at weather.gov/ctp. && $$ For more information from the National Weather Service visit http://weather.gov/ctp
383 WWUS71 KCTP 301358 NPWCTP URGENT - WEATHER MESSAGE National Weather Service State College PA 958 AM EDT Fri Apr 30 2021 PAZ035-036-056>059-063>066-010200- /O.CON.KCTP.HW.W.0002.210430T1800Z-210501T0600Z/ Fulton-Franklin-Perry-Dauphin-Schuylkill-Lebanon-Cumberland-Adams- York-Lancaster- Including the cities of McConnellsburg, Chambersburg, Newport, Harrisburg, Hershey, Pottsville, Lebanon, Carlisle, Gettysburg, York, and Lancaster 958 AM EDT Fri Apr 30 2021 ...HIGH WIND WARNING REMAINS IN EFFECT FROM 2 PM THIS AFTERNOON TO 2 AM EDT SATURDAY... * WHAT...Northwest winds 25 to 35 mph, with gusts up to 60 mph expected. * WHERE...Fulton, Franklin, Perry, Dauphin, Schuylkill, Lebanon, Cumberland, Adams, York, and Lancaster Counties. * WHEN...From 2 PM Friday to 2 AM EDT Saturday. The strongest winds are likely later this afternoon into the evening. * IMPACTS...Downed tree limbs onto power lines will likely result in scattered power outages. Travel will be difficult, especially for high profile vehicles. PRECAUTIONARY/PREPAREDNESS ACTIONS... People should avoid being outside in forested areas and around trees and branches. If possible, remain in the lower levels of your home during the windstorm, and avoid windows. Use caution if you must drive. For high wind safety information, visit weather.gov/wind. The latest forecast information can be found on the NWS State College Facebook page and Twitter @NWSStateCollege, or on the web at weather.gov/ctp. && $$ PAZ017-018-024-033-010200- /O.CON.KCTP.WI.Y.0003.210430T1600Z-210501T0400Z/ /O.CON.KCTP.FZ.A.0003.210501T0400Z-210501T1200Z/ Clearfield-Northern Centre-Cambria-Somerset- Including the cities of DuBois, Clearfield, Philipsburg, Johnstown, and Somerset 958 AM EDT Fri Apr 30 2021 ...WIND ADVISORY REMAINS IN EFFECT UNTIL MIDNIGHT EDT TONIGHT... ...FREEZE WATCH REMAINS IN EFFECT FROM LATE TONIGHT THROUGH SATURDAY MORNING... * WHAT...For the Wind Advisory, northwest winds 20 to 25 mph, with gusts up to 50 mph expected. For the Freeze Watch, sub- freezing temperatures as low as 30 possible. * WHERE...Clearfield, Northern Centre, Cambria, and Somerset Counties. * WHEN...For the Wind Advisory, this afternoon and evening. For the Freeze Watch, Saturday morning. * IMPACTS...Gusty winds could blow around unsecured objects. Tree limbs could be blown down and a few power outages may result. Freezing temperatures could kill crops and other sensitive vegetation. PRECAUTIONARY/PREPAREDNESS ACTIONS... Use extra caution when driving, especially if operating a high profile vehicle. Secure outdoor objects. Take protective measures now as freezing temperatures could damage or kill tender plants and vegetation. Potted plants should be brought inside. For high wind safety information, visit weather.gov/wind. The latest forecast information can be found on the NWS State College Facebook page and Twitter @NWSStateCollege, or on the web at weather.gov/ctp. && $$ PAZ006-011-012-019-025>028-034-037-041-042-045-046-049>053-010200- /O.CON.KCTP.WI.Y.0003.210430T1600Z-210501T0400Z/ Potter-Cameron-Northern Clinton-Southern Centre-Blair-Huntingdon- Mifflin-Juniata-Bedford-Tioga-Northern Lycoming-Sullivan- Southern Clinton-Southern Lycoming-Union-Snyder-Montour- Northumberland-Columbia- Including the cities of Coudersport, Emporium, Renovo, State College, Altoona, Huntingdon, Mount Union, Lewistown, Mifflintown, Bedford, Mansfield, Wellsboro, Trout Run, Laporte, Lock Haven, Williamsport, Lewisburg, Selinsgrove, Danville, Sunbury, Shamokin, Bloomsburg, and Berwick 958 AM EDT Fri Apr 30 2021 ...WIND ADVISORY REMAINS IN EFFECT UNTIL MIDNIGHT EDT TONIGHT... * WHAT...Northwest winds 20 to 25 mph, with gusts around 50 mph expected. * WHERE...Much of central Pennsylvania. * WHEN...From noon Friday to midnight EDT Friday night. * IMPACTS...Gusty winds could blow around unsecured objects. Tree limbs could be blown down and a few power outages may result. PRECAUTIONARY/PREPAREDNESS ACTIONS... Use extra caution when driving, especially if operating a high profile vehicle. Secure outdoor objects. For high wind safety information, visit weather.gov/wind. The latest forecast information can be found on the NWS State College Facebook page and Twitter @NWSStateCollege, or on the web at weather.gov/ctp. && $$ PAZ004-010200- /O.CON.KCTP.FZ.A.0003.210501T0400Z-210501T1200Z/ Warren- Including the city of Warren 958 AM EDT Fri Apr 30 2021 ...FREEZE WATCH REMAINS IN EFFECT FROM LATE TONIGHT THROUGH SATURDAY MORNING... * WHAT...Sub-freezing temperatures possible. * WHERE...Warren County. * WHEN...Late Friday night through Saturday morning. * IMPACTS...Freezing temperatures could kill crops and other sensitive vegetation. PRECAUTIONARY/PREPAREDNESS ACTIONS... Take protective measures now as freezing temperatures could damage or kill tender plants and vegetation. Potted plants should be brought inside. The latest forecast information can be found on the NWS State College Facebook page and Twitter @NWSStateCollege, or on the web at weather.gov/ctp. && $$ For more information from the National Weather Service visit http://weather.gov/ctp
494 WWUS71 KCTP 301826 NPWCTP URGENT - WEATHER MESSAGE National Weather Service State College PA 226 PM EDT Fri Apr 30 2021 PAZ017-018-024-033-010630- /O.UPG.KCTP.FZ.A.0003.210501T0400Z-210501T1200Z/ /O.NEW.KCTP.FZ.W.0003.210501T0400Z-210501T1200Z/ /O.CON.KCTP.WI.Y.0003.000000T0000Z-210501T0400Z/ Clearfield-Northern Centre-Cambria-Somerset- Including the cities of DuBois, Clearfield, Philipsburg, Johnstown, and Somerset 226 PM EDT Fri Apr 30 2021 ...WIND ADVISORY REMAINS IN EFFECT UNTIL MIDNIGHT EDT TONIGHT... ...FREEZE WARNING IN EFFECT FROM MIDNIGHT TONIGHT TO 8 AM EDT SATURDAY... * WHAT...For the Freeze Warning, sub-freezing temperatures as low as 32 expected. For the Wind Advisory, northwest winds 15 to 25 mph, with gusts up to 50 mph. * WHERE...Clearfield, Northern Centre, Cambria and Somerset Counties. * WHEN...For the Freeze Warning, from midnight tonight to 8 AM EDT Saturday. For the Wind Advisory, until midnight EDT tonight. * IMPACTS...Gusty winds could blow around unsecured objects. Tree limbs could be blown down and a few power outages may result. Frost and freeze conditions will kill crops, other sensitive vegetation and possibly damage unprotected outdoor plumbing. PRECAUTIONARY/PREPAREDNESS ACTIONS... Use extra caution when driving, especially if operating a high profile vehicle. Secure outdoor objects. For high wind safety information, visit weather.gov/wind. The latest forecast information can be found on the NWS State College Facebook page and Twitter @NWSStateCollege, or on the web at weather.gov/ctp. Take protective measures now as freezing temperatures could damage or kill tender plants and vegetation. Potted plants should be brought inside. && $$ PAZ004-010630- /O.UPG.KCTP.FZ.A.0003.210501T0400Z-210501T1200Z/ /O.NEW.KCTP.FZ.W.0003.210501T0400Z-210501T1200Z/ Warren- Including the city of Warren 226 PM EDT Fri Apr 30 2021 ...FREEZE WARNING IN EFFECT FROM MIDNIGHT TONIGHT TO 8 AM EDT SATURDAY... * WHAT...Sub-freezing temperatures as low as 30 expected. * WHERE...Warren County. * WHEN...From midnight tonight to 8 AM EDT Saturday. * IMPACTS...Frost and freeze conditions will kill crops, other sensitive vegetation and possibly damage unprotected outdoor plumbing. PRECAUTIONARY/PREPAREDNESS ACTIONS... Take protective measures now as freezing temperatures could damage or kill tender plants and vegetation. Potted plants should be brought inside. The latest forecast information can be found on the NWS State College Facebook page and Twitter @NWSStateCollege, or on the web at weather.gov/ctp. && $$ PAZ035-036-056>059-063>066-010600- /O.CON.KCTP.HW.W.0002.000000T0000Z-210501T0600Z/ Fulton-Franklin-Perry-Dauphin-Schuylkill-Lebanon-Cumberland-Adams- York-Lancaster- Including the cities of McConnellsburg, Chambersburg, Newport, Harrisburg, Hershey, Pottsville, Lebanon, Carlisle, Gettysburg, York, and Lancaster 226 PM EDT Fri Apr 30 2021 ...HIGH WIND WARNING REMAINS IN EFFECT UNTIL 2 AM EDT SATURDAY... * WHAT...Northwest winds 25 to 35 mph, with gusts up to 60 mph expected. * WHERE...Fulton, Franklin, Perry, Dauphin, Schuylkill, Lebanon, Cumberland, Adams, York, and Lancaster Counties. * WHEN...From 2 PM Friday to 2 AM EDT Saturday. The strongest winds are likely later this afternoon into the evening. * IMPACTS...Downed tree limbs onto power lines will likely result in scattered power outages. Travel will be difficult, especially for high profile vehicles. PRECAUTIONARY/PREPAREDNESS ACTIONS... People should avoid being outside in forested areas and around trees and branches. If possible, remain in the lower levels of your home during the windstorm, and avoid windows. Use caution if you must drive. For high wind safety information, visit weather.gov/wind. The latest forecast information can be found on the NWS State College Facebook page and Twitter @NWSStateCollege, or on the web at weather.gov/ctp. && $$ PAZ006-011-012-019-025>028-034-037-041-042-045-046-049>053-010400- /O.CON.KCTP.WI.Y.0003.000000T0000Z-210501T0400Z/ Potter-Cameron-Northern Clinton-Southern Centre-Blair-Huntingdon- Mifflin-Juniata-Bedford-Tioga-Northern Lycoming-Sullivan- Southern Clinton-Southern Lycoming-Union-Snyder-Montour- Northumberland-Columbia- Including the cities of Coudersport, Emporium, Renovo, State College, Altoona, Huntingdon, Mount Union, Lewistown, Mifflintown, Bedford, Mansfield, Wellsboro, Trout Run, Laporte, Lock Haven, Williamsport, Lewisburg, Selinsgrove, Danville, Sunbury, Shamokin, Bloomsburg, and Berwick 226 PM EDT Fri Apr 30 2021 ...WIND ADVISORY REMAINS IN EFFECT UNTIL MIDNIGHT EDT TONIGHT... * WHAT...Northwest winds 20 to 25 mph, with gusts around 50 mph expected. * WHERE...Much of central Pennsylvania. * WHEN...From noon Friday to midnight EDT Friday night. * IMPACTS...Gusty winds could blow around unsecured objects. Tree limbs could be blown down and a few power outages may result. PRECAUTIONARY/PREPAREDNESS ACTIONS... Use extra caution when driving, especially if operating a high profile vehicle. Secure outdoor objects. For high wind safety information, visit weather.gov/wind. The latest forecast information can be found on the NWS State College Facebook page and Twitter @NWSStateCollege, or on the web at weather.gov/ctp. && $$
What forecasters said that day
The local office's own words before this freeze watch went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.
NWS State College, PA wrote its last area forecast discussion before this freeze watch went out at Apr 29, 2:20 PM EDT, 13 minutes earlier.
Area forecast discussion, Apr 29, 2:20 PM EDT, 13 minutes before
Area Forecast Discussion National Weather Service State College PA 220 PM EDT Thu Apr 29 2021 .SYNOPSIS... Widespread showers are expected today with isolated thunderstorms possible this afternoon. Showers gradually fade tonight with noticeably cooler and very windy conditions developing on Friday. Expect a chilly start to May before conditions improve and temperatures trend warmer into next week. && .NEAR TERM /THROUGH TONIGHT/... Showers covering nearly all of central PA late morning as sfc wave deepens and slides along the front draped across NW/Ncentral PA. Categorical POPs continue to be supported throughout most of central PA. However, the steadiest rain should fall across the extreme northwest part of the forecast area, where fgen forcing is strongest at nose of low level jet. Elsewhere, the rain should be showery in nature. Latest HREF and WPC/NBM blend supports total rainfall of around 1 inch across the northern tier. Earlier SLGT outlook downgraded to MRGL given marginal instability <200 J/kg, despite strong post frontal bulk shear. A few strong gusts may occur this aftn/eve, but should remain below severe limits given lack of instability. A cold front will traverse the area tonight with showers fading into early Friday morning downwind of the Alleghenies in the cooler and increasingly gusty postfrontal NW flow. 24hrMinTChange will be a -10F to -20F degrees with lows ranging from low/mid 40s in the western and northern Alleghenies to mid 50s in the LSV. && .SHORT TERM /FRIDAY THROUGH FRIDAY NIGHT/... Latest model guidance shows intensifying low pressure into New England on Friday. A tightening p-gradient and reinforcing surge of low level CAA will translate into a period of strong gusty NW winds to close out the month. Forecast soundings show very deep BL mixing which will tap into 40-50+kt winds aloft. We remain keen to trend wind gusts higher than blended model guidance with peak gusts currently in the 50-55 mph range. With the potential for higher gusts up to 60 mph, we issued a high wind watch for parts of south central PA in collaboration with WFOs LWX and PHI. We are very bullish on advisory level gusts across most of CPA. Friday is the last day of April 2021 and it will be noticeably colder with a passing shower in spots. The MaxT24hrChange will be a setback of 10 to 20 degrees [trending] colder with highs a -5 to -15 degrees below average from the mid 40s NW to low 60s SE. A rather chilly Friday night with lows Saturday morning in the low 30s/40s to kick off the 5th month of the year. As 7 additional zones start the growing season May 1, we're closely monitoring freeze potential Saturday morning in Warren County & in the Laurel Highlands. Confidence in freezing temperatures in Warren County continues to increase, while we'll closely monitor trends in Somerset, Cambria, Clearfield, and possibly Northern Centre County. && .LONG TERM /SATURDAY THROUGH THURSDAY/... High confidence in cool and dry conditions Saturday, as upper trough lifts out and surface high builds into PA. Any lingering gustiness in the morning will taper off by afternoon. Dry air at low levels will likely translate to afternoon minRH values below 30%, although a subsidence inversion should prevent the mixing down of even drier air above the BL. All medium range guidance develops an upper ridge off of the east coast Sunday into early next week, with a quasi- stationary front draped across the Grt Lks into northern New England. A deep southwest flow should result in a return to above normal temperatures during this period, along with an increasing chance of showers, especially closer to the front over northwest PA. ECENS and GEFS plumes continue to indicate the best chance of showers will come in two bouts during the first half of next week. The first is likely Monday PM in association with a southern stream shortwave lifting out of the Miss Valley. The progged surface low track through the eastern Grt Lks favors northwest Pa for the most significant rain from this system. The second bout is likely to come mid week associated with next wave of low pressure riding along quasi- stationary front. A bit more uncertainty remains with this one as the ECENS deepens the surface low more significantly, resulting in a slower/southern track compared to the GEFS. Regardless of which track wins out, a cooler & unsettled weekend appears likely for the second weekend in May. && .AVIATION /19Z THURSDAY THROUGH TUESDAY/... Widespread rain showers are ongoing across most of the area at the lunch hour, with a mixed bag of restrictions ranging from LIFR/IFR at BFD, JST, and IPT, MVFR at UNV, and VFR at AOO, MDT, and LNS. Expect rain showers and mostly steady-state cigs to continue into the late afternoon hours. A narrow cold frontal rain band will move from northwest to southeast this evening, and may result in briefly reduced visibilities and gusty winds as the line moves through. Recent guidance is less impressive with this line, indicate it may fall apart as it traverses Central Pennsylvania. In its wake, expect winds to rapidly shift to come out of the west, northwest with gusts of 20-30kts continuing through the overnight hours. IFR/LIFR cigs will persist in the northwest mountains at JST and BFD, with MVFR or VFR prevailing farther east/south. Outlook... Fri...Restrictions possible with rain showers. Gusty W/NW winds. Sat...MVFR cigs BFD/JST possible in morning. Breezy. Sun...Improving conditions. Mon...Mainly VFR conditions, but a chance of showers late NW. && .CTP WATCHES/WARNINGS/ADVISORIES... High Wind Watch from Friday afternoon through late Friday night for PAZ035-036-056>059-063>066. && SYNOPSIS...DeVoir/Steinbugl NEAR TERM...DeVoir/Steinbugl SHORT TERM...Steinbugl LONG TERM...Fitzgerald/Banghoff AVIATION...Banghoff/Gutierrez
Hazardous weather outlook, Apr 29, 4:07 AM EDT, 10 hours 26 minutes before
Hazardous Weather Outlook National Weather Service State College PA 407 AM EDT Thu Apr 29 2021 PAZ004-300815- Warren- 407 AM EDT Thu Apr 29 2021 This Hazardous Weather Outlook is for central Pennsylvania. .DAY ONE...Today and tonight. The probability for widespread hazardous weather is low. .DAYS TWO THROUGH SEVEN...Friday through Wednesday. Wind gusts over 40 mph are possible Friday afternoon into Friday night. .SPOTTER INFORMATION STATEMENT... Spotter activation is not expected at this time. PAZ012-017>019-024>028-033-034-041-042-045-046-049>053-300815- Northern Clinton-Clearfield-Northern Centre-Southern Centre-Cambria- Blair-Huntingdon-Mifflin-Juniata-Somerset-Bedford-Northern Lycoming- Sullivan-Southern Clinton-Southern Lycoming-Union-Snyder-Montour- Northumberland-Columbia- 407 AM EDT Thu Apr 29 2021 This Hazardous Weather Outlook is for central Pennsylvania. .DAY ONE...Today and tonight. Isolated severe thunderstorms with localized damaging wind gusts are possible this afternoon. .DAYS TWO THROUGH SEVEN...Friday through Wednesday. Wind gusts up to 50 mph are possible Friday afternoon into Friday night. .SPOTTER INFORMATION STATEMENT... Spotters are encouraged to report significant hazardous weather. PAZ035-036-056>059-063>066-300815- Fulton-Franklin-Perry-Dauphin-Schuylkill-Lebanon-Cumberland-Adams- York-Lancaster- 407 AM EDT Thu Apr 29 2021 ...HIGH WIND WATCH IN EFFECT FROM FRIDAY AFTERNOON THROUGH LATE FRIDAY NIGHT... This Hazardous Weather Outlook is for central Pennsylvania. .DAY ONE...Today and tonight. Isolated severe thunderstorms with localized damaging wind gusts are possible this afternoon. .DAYS TWO THROUGH SEVEN...Friday through Wednesday. Please listen to NOAA Weather Radio or go to weather.gov/StateCollege on the internet for more information about the following hazards. High Wind Watch. .SPOTTER INFORMATION STATEMENT... Spotters are encouraged to report significant hazardous weather. PAZ005-006-010-011-037-300815- McKean-Potter-Elk-Cameron-Tioga- 407 AM EDT Thu Apr 29 2021 This Hazardous Weather Outlook is for central Pennsylvania. .DAY ONE...Today and tonight. Isolated strong thunderstorms with gusty winds are possible this afternoon. .DAYS TWO THROUGH SEVEN...Friday through Wednesday. Wind gusts up to 50 mph are possible Friday afternoon into Friday night. .SPOTTER INFORMATION STATEMENT... Spotters are encouraged to report significant hazardous weather. MRS
The office that day
Everything else NWS State College, PA issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Apr 28, 9:57 PM EDT | Special Weather Statement | CTP | Clearfield | 33 min |
| Apr 29, 3:58 AM EDT | High Wind Watch | CTP | Adams, Cumberland, Dauphin, Franklin, Fulton, Lancaster and 4 more | 16 hr |
Nearby
Freeze Watches in Pennsylvania, 2021Every freeze watch in 2021
Sources
The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.