Alert archive / Pennsylvania / Lake Effect Snow Warnings in 2007
Lake Effect Snow Warning 2, NWS State College, PA
NWS State College, PA issued this lake effect snow warning at Jan 19, 2007, 2:41 AM EST for Warren County, Pennsylvania. It took effect at Jan 19, 2007, 10:00 AM EST. It was in force for 30 hr. No storm report in the archive falls inside the area while it was in force.
The area
The counties it named.
The facts
- Issued
- Jan 19, 2007, 2:41 AM EST (07:41 UTC)
- In effect from
- Jan 19, 2007, 10:00 AM EST
- Expired
- Jan 20, 2007, 4:00 PM EST
- In force
- 30 hr
- Issued by
- NWS State College, PA
County Warren County, PA
The radar
The Buffalo radar (KBUF), 134 km from the middle of the area, began a volume at 07:46 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
Buffalo Intl Airport, NY (KBUF), launched 00:00Z, 7.7 hours before the alert went out and 133 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
- 0 J/kg
- Mixed-layer CIN
- No buoyant parcel
- Mixed-layer LCL
- 1671 m above ground
- 0-6 km bulk shear
- 67 kt
- 0-1 km storm-relative helicity
- 202 m²/s²
- 0-3 km storm-relative helicity
- 281 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
000 WWUS41 KCTP 190741 WSWCTP URGENT - WINTER WEATHER MESSAGE NATIONAL WEATHER SERVICE STATE COLLEGE PA 241 AM EST FRI JAN 19 2007 ...LAKE EFFECT SNOWS EXPECTED TO DEVELOP OVER THE REGION LATER TODAY AND LAST INTO SATURDAY... .A STORM WILL INTENSIFY OFF OF THE MID ATLANTIC COAST TODAY... CAUSING THE PRESSURE GRADIENT TO INCREASE ACROSS THE REGION. INCREASING NORTHWEST WINDS WILL DRAW COLDER CANADIAN AIR ACROSS THE STILL UNFROZEN WATERS OF THE GREAT LAKES...CAUSING SNOW SHOWERS AND SQUALLS OVER PARTS OF THE NORTHERN MOUNTAINS AND LAUREL HIGHLANDS THIS AFTERNOON THROUGH SATURDAY MORNING. PAZ024-033-190845- /O.CAN.KCTP.WS.A.0001.070119T1500Z-070120T1600Z/ CAMBRIA-SOMERSET- 241 AM EST FRI JAN 19 2007 ...WINTER STORM WATCH IS CANCELLED... THE NATIONAL WEATHER SERVICE IN STATE COLLEGE HAS CANCELED THE WINTER STORM WATCH. WHILE SNOW SHOWERS AND A FEW ISOLATED SQUALLS ARE POSSIBLE IN THE AREA THIS AFTERNOON AND TONIGHT...OVERALL ACCUMULATIONS IN THE 1 TO 3 INCH RANGE ARE EXPECTED. THEREFORE...THE WINTER STORM WATCH HAS BEEN CANCELED. $$ PAZ004-191630- /O.UPG.KCTP.LE.A.0001.070119T1500Z-070120T1600Z/ /O.NEW.KCTP.LE.W.0002.070119T1500Z-070120T1600Z/ WARREN- 241 AM EST FRI JAN 19 2007 ...LAKE EFFECT SNOW WARNING IN EFFECT FROM 10 AM THIS MORNING TO 11 AM EST SATURDAY... ...LAKE EFFECT SNOW WATCH NO LONGER IN EFFECT... THE NATIONAL WEATHER SERVICE IN STATE COLLEGE HAS ISSUED A LAKE EFFECT SNOW WARNING...WHICH IS IN EFFECT FROM 10 AM THIS MORNING TO 11 AM EST SATURDAY. THE LAKE EFFECT SNOW WATCH IS NO LONGER IN EFFECT. SNOW SHOWERS WILL INCREASE THROUGHOUT THE DAY...WITH A FEW SQUALLS POSSIBLE THIS AFTERNOON OR EVENING. TOTAL STORM ACCUMULATIONS BY SATURDAY AFTERNOON SHOULD RANGE FROM 4 TO 8 INCHES...WITH THE TRADITIONAL SNOW BELT AREAS OF NORTHWEST WARREN COUNTY LIKELY TO SEE THE MOST SNOW. THE SNOW WILL TAPER TO FLURRIES BY SATURDAY EVENING. IN ADDITION TO THE SNOW SHOWERS AND SQUALLS...BLOWING AND DRIFTING SNOW CAN BE EXPECTED AS WIND GUSTS IN EXCESS OF 25 TO 35 MPH DEVELOP. THIS MAY CAUSE LOCAL WHITE OUT CONDITIONS AND MAKE FOR EXTREMELY HAZARDOUS TRAVEL. A LAKE EFFECT SNOW WARNING MEANS SIGNIFICANT AMOUNTS OF LAKE EFFECT SNOW ARE FORECAST...MAKING TRAVEL VERY HAZARDOUS. LAKE EFFECT SNOW SHOWERS TYPICALLY ALIGN THEMSELVES IN BANDS AND WILL LIKELY BE INTENSE ENOUGH TO DROP 1 TO SEVERAL INCHES OF SNOW PER HOUR FOR SEVERAL HOURS. VISIBILITIES VARY GREATLY AND CAN DROP TO ZERO WITHIN MINUTES. TRAVEL IS STRONGLY DISCOURAGED. IF YOU MUST TRAVEL...KEEP AN EXTRA FLASHLIGHT...FOOD...AND A CELLULAR PHONE IN YOUR VEHICLE IN CASE OF AN EMERGENCY. $$ PAZ005-191630- /O.UPG.KCTP.LE.A.0001.070119T1500Z-070120T1600Z/ /O.NEW.KCTP.LE.Y.0003.070119T1500Z-070120T1600Z/ MCKEAN- 241 AM EST FRI JAN 19 2007 ...LAKE EFFECT SNOW ADVISORY IN EFFECT FROM 10 AM THIS MORNING TO 11 AM EST SATURDAY... ...LAKE EFFECT SNOW WATCH NO LONGER IN EFFECT... THE NATIONAL WEATHER SERVICE IN STATE COLLEGE HAS ISSUED A LAKE EFFECT SNOW ADVISORY...WHICH IS IN EFFECT FROM 10 AM THIS MORNING TO 11 AM EST SATURDAY. THE LAKE EFFECT SNOW WATCH IS NO LONGER IN EFFECT. SNOW SHOWERS WILL INCREASE LATER THIS MORNING AND AFTERNOON...WITH THE POTENTIAL FOR 3 TO 6 INCHES OF ACCUMULATION BY SATURDAY AFTERNOON. WESTERN PORTIONS OF MCKEAN COUNTY WILL SEE THE MOST SNOWFALL BEFORE THE SNOW TAPERS TO FLURRIES ON SATURDAY AFTERNOON. IN ADDITION TO THE SNOW SHOWERS AND SQUALLS...BLOWING AND DRIFTING SNOW CAN BE EXPECTED AS WIND GUSTS IN EXCESS OF 25 TO 30 MPH DEVELOP. THIS MAY CAUSE LOCAL WHITE OUT CONDITIONS AND MAKE FOR EXTREMELY HAZARDOUS TRAVEL. A LAKE EFFECT SNOW ADVISORY MEANS LAKE EFFECT SNOW IS FORECAST THAT WILL MAKE TRAVEL DIFFICULT IN SOME AREAS. LAKE EFFECT SNOW SHOWERS TYPICALLY ALIGN THEMSELVES IN BANDS AND WILL LIKELY BE INTENSE ENOUGH TO DROP SEVERAL INCHES IN LOCALIZED AREAS. USE CAUTION WHEN TRAVELING. $$ DEVOIR
6 follow-up statements
000 WWUS41 KCTP 191532 WSWCTP URGENT - WINTER WEATHER MESSAGE NATIONAL WEATHER SERVICE STATE COLLEGE PA 1032 AM EST FRI JAN 19 2007 ...LAKE EFFECT SNOWS EXPECTED TO DEVELOP OVER THE REGION THIS AFTERNOON AND LAST INTO SATURDAY... .A STORM WILL INTENSIFY OFF OF THE MID ATLANTIC COAST TODAY... CAUSING THE PRESSURE GRADIENT TO INCREASE ACROSS THE REGION. INCREASING NORTHWEST WINDS WILL DRAW COLDER CANADIAN AIR ACROSS THE STILL UNFROZEN WATERS OF THE GREAT LAKES...CAUSING SNOW SHOWERS AND SQUALLS OVER PARTS OF THE NORTHERN MOUNTAINS AND LAUREL HIGHLANDS THIS AFTERNOON THROUGH SATURDAY MORNING. PAZ004-200000- /O.CON.KCTP.LE.W.0002.000000T0000Z-070120T1600Z/ WARREN- 1032 AM EST FRI JAN 19 2007 ...LAKE EFFECT SNOW WARNING REMAINS IN EFFECT UNTIL 11 AM EST SATURDAY... A LAKE EFFECT SNOW WARNING REMAINS IN EFFECT UNTIL 11 AM EST SATURDAY. SNOW SHOWERS WILL INCREASE THROUGHOUT THE DAY...WITH A FEW SQUALLS POSSIBLE THIS AFTERNOON OR EVENING. TOTAL STORM ACCUMULATIONS BY SATURDAY AFTERNOON SHOULD RANGE FROM 4 TO 8 INCHES...WITH THE TRADITIONAL SNOW BELT AREAS OF NORTHWEST WARREN COUNTY LIKELY TO SEE THE MOST SNOW. THE SNOW WILL TAPER TO FLURRIES BY SATURDAY EVENING. IN ADDITION TO THE SNOW SHOWERS AND SQUALLS...BLOWING AND DRIFTING SNOW CAN BE EXPECTED AS WIND GUSTS IN EXCESS OF 25 TO 35 MPH DEVELOP. THIS MAY CAUSE LOCAL WHITE OUT CONDITIONS AND MAKE FOR EXTREMELY HAZARDOUS TRAVEL. A LAKE EFFECT SNOW WARNING MEANS SIGNIFICANT AMOUNTS OF LAKE EFFECT SNOW ARE FORECAST...MAKING TRAVEL VERY HAZARDOUS. LAKE EFFECT SNOW SHOWERS TYPICALLY ALIGN THEMSELVES IN BANDS AND WILL LIKELY BE INTENSE ENOUGH TO DROP 1 TO SEVERAL INCHES OF SNOW PER HOUR FOR SEVERAL HOURS. VISIBILITIES VARY GREATLY AND CAN DROP TO ZERO WITHIN MINUTES. TRAVEL IS STRONGLY DISCOURAGED. IF YOU MUST TRAVEL...KEEP AN EXTRA FLASHLIGHT...FOOD...AND A CELLULAR PHONE IN YOUR VEHICLE IN CASE OF AN EMERGENCY. $$ PAZ005-200000- /O.CON.KCTP.LE.Y.0003.000000T0000Z-070120T1600Z/ MCKEAN- 1032 AM EST FRI JAN 19 2007 ...LAKE EFFECT SNOW ADVISORY REMAINS IN EFFECT UNTIL 11 AM EST SATURDAY... A LAKE EFFECT SNOW ADVISORY REMAINS IN EFFECT UNTIL 11 AM EST SATURDAY. SNOW SHOWERS WILL INCREASE LATER THIS MORNING AND AFTERNOON... WITH THE POTENTIAL FOR 3 TO 6 INCHES OF ACCUMULATION BY SATURDAY AFTERNOON. WESTERN PORTIONS OF MCKEAN COUNTY WILL SEE THE MOST SNOWFALL BEFORE THE SNOW TAPERS TO FLURRIES ON SATURDAY AFTERNOON. IN ADDITION TO THE SNOW SHOWERS AND SQUALLS...BLOWING AND DRIFTING SNOW CAN BE EXPECTED AS WIND GUSTS IN EXCESS OF 25 TO 30 MPH DEVELOP. THIS MAY CAUSE LOCAL WHITE OUT CONDITIONS AND MAKE FOR EXTREMELY HAZARDOUS TRAVEL. A LAKE EFFECT SNOW ADVISORY MEANS LAKE EFFECT SNOW IS FORECAST THAT WILL MAKE TRAVEL DIFFICULT IN SOME AREAS. LAKE EFFECT SNOW SHOWERS TYPICALLY ALIGN THEMSELVES IN BANDS AND WILL LIKELY BE INTENSE ENOUGH TO DROP SEVERAL INCHES IN LOCALIZED AREAS. USE CAUTION WHEN TRAVELING. $$
000 WWUS41 KCTP 192005 WSWCTP URGENT - WINTER WEATHER MESSAGE NATIONAL WEATHER SERVICE STATE COLLEGE PA 305 PM EST FRI JAN 19 2007 ...LAKE EFFECT SNOWS EXPECTED TO CONTINUE OVER THE REGION TONIGHT THROUGH SATURDAY MORNING... .A STORM WILL INTENSIFY OFF OF THE MID ATLANTIC COAST TODAY... CAUSING THE PRESSURE GRADIENT TO INCREASE ACROSS THE REGION. GUSTY NORTHWEST WINDS WILL CROSS THE STILL UNFROZEN WATERS OF THE GREAT LAKES RESULTING IN SNOW SHOWERS AND SQUALLS OVER PARTS OF THE NORTHERN MOUNTAINS AND LAUREL HIGHLANDS THROUGH SATURDAY MORNING. PAZ004-200500- /O.CON.KCTP.LE.W.0002.000000T0000Z-070120T1600Z/ WARREN- 305 PM EST FRI JAN 19 2007 ...LAKE EFFECT SNOW WARNING REMAINS IN EFFECT UNTIL 11 AM EST SATURDAY... A LAKE EFFECT SNOW WARNING REMAINS IN EFFECT UNTIL 11 AM EST SATURDAY. SNOW SHOWERS WILL INCREASE THROUGHOUT THE DAY...WITH A FEW SQUALLS POSSIBLE THIS EVENING AND OVERNIGHT. TOTAL STORM ACCUMULATIONS BY SATURDAY AFTERNOON SHOULD RANGE FROM 4 TO 8 INCHES...WITH THE TRADITIONAL SNOW BELT AREAS OF NORTHWEST WARREN COUNTY LIKELY TO SEE THE MOST SNOW. THE SNOW WILL TAPER TO FLURRIES BY SATURDAY EVENING. IN ADDITION TO THE SNOW SHOWERS AND SQUALLS...BLOWING AND DRIFTING SNOW CAN BE EXPECTED AS WIND GUSTS IN EXCESS OF 25 TO 35 MPH DEVELOP. THIS MAY CAUSE LOCAL WHITE OUT CONDITIONS AND MAKE FOR EXTREMELY HAZARDOUS TRAVEL. A LAKE EFFECT SNOW WARNING MEANS SIGNIFICANT AMOUNTS OF LAKE EFFECT SNOW ARE FORECAST...MAKING TRAVEL VERY HAZARDOUS. LAKE EFFECT SNOW SHOWERS TYPICALLY ALIGN THEMSELVES IN BANDS AND WILL LIKELY BE INTENSE ENOUGH TO DROP 1 TO SEVERAL INCHES OF SNOW PER HOUR FOR SEVERAL HOURS. VISIBILITIES VARY GREATLY AND CAN DROP TO ZERO WITHIN MINUTES. TRAVEL IS STRONGLY DISCOURAGED. IF YOU MUST TRAVEL...KEEP AN EXTRA FLASHLIGHT...FOOD...AND A CELLULAR PHONE IN YOUR VEHICLE IN CASE OF AN EMERGENCY. $$ PAZ010-017-024-033-200500- /O.NEW.KCTP.SN.Y.0002.070120T0100Z-070120T1600Z/ ELK-CLEARFIELD-CAMBRIA-SOMERSET- 305 PM EST FRI JAN 19 2007 ...SNOW ADVISORY IN EFFECT FROM 8 PM THIS EVENING TO 11 AM EST SATURDAY... THE NATIONAL WEATHER SERVICE IN STATE COLLEGE HAS ISSUED A SNOW ADVISORY...WHICH IS IN EFFECT FROM 8 PM THIS EVENING TO 11 AM EST SATURDAY. SNOW SHOWERS WILL INCREASE LATER THIS EVENING AND OVERNIGHT... WITH THE POTENTIAL FOR 3 TO 5 INCHES OF ACCUMULATION BY SATURDAY AFTERNOON. IN ADDITION TO THE SNOW SHOWERS AND SQUALLS...BLOWING AND DRIFTING SNOW CAN BE EXPECTED AS WIND GUSTS IN EXCESS OF 25 TO 30 MPH DEVELOP. THIS MAY CAUSE LOCAL WHITE OUT CONDITIONS AND MAKE FOR EXTREMELY HAZARDOUS TRAVEL. A SNOW ADVISORY MEANS THAT PERIODS OF SNOW WILL CAUSE TRAVEL DIFFICULTIES. BE PREPARED FOR SNOW COVERED ROADS AND LIMITED VISIBILITIES...AND USE CAUTION WHILE DRIVING. $$ PAZ005-200500- /O.CON.KCTP.LE.Y.0003.000000T0000Z-070120T1600Z/ MCKEAN- 305 PM EST FRI JAN 19 2007 ...LAKE EFFECT SNOW ADVISORY REMAINS IN EFFECT UNTIL 11 AM EST SATURDAY... A LAKE EFFECT SNOW ADVISORY REMAINS IN EFFECT UNTIL 11 AM EST SATURDAY. SNOW SHOWERS WILL CONTINUE THIS EVENING AND OVERNIGHT...WITH THE POTENTIAL FOR 3 TO 6 INCHES OF ACCUMULATION BY SATURDAY AFTERNOON. WESTERN PORTIONS OF MCKEAN COUNTY WILL SEE THE MOST SNOWFALL BEFORE THE SNOW TAPERS TO FLURRIES ON SATURDAY AFTERNOON. IN ADDITION TO THE SNOW SHOWERS AND SQUALLS...BLOWING AND DRIFTING SNOW CAN BE EXPECTED AS WIND GUSTS IN EXCESS OF 25 TO 30 MPH DEVELOP. THIS MAY CAUSE LOCAL WHITE OUT CONDITIONS AND MAKE FOR EXTREMELY HAZARDOUS TRAVEL. A LAKE EFFECT SNOW ADVISORY MEANS LAKE EFFECT SNOW IS FORECAST THAT WILL MAKE TRAVEL DIFFICULT IN SOME AREAS. LAKE EFFECT SNOW SHOWERS TYPICALLY ALIGN THEMSELVES IN BANDS AND WILL LIKELY BE INTENSE ENOUGH TO DROP SEVERAL INCHES IN LOCALIZED AREAS. USE CAUTION WHEN TRAVELING. $$ TYBURSKI/MARTIN
000 WWUS41 KCTP 192138 WSWCTP URGENT - WINTER WEATHER MESSAGE NATIONAL WEATHER SERVICE STATE COLLEGE PA 438 PM EST FRI JAN 19 2007 ...LAKE EFFECT SNOWS EXPECTED TO CONTINUE OVER THE REGION TONIGHT THROUGH SATURDAY MORNING... .A STORM WILL INTENSIFY AS IT MOVES INTO THE CANADIAN MARITIMES TONIGHT AND SATURDAY. GUSTY NORTHWEST WINDS FLOWING ACROSS THE STILL UNFROZEN WATERS OF THE GREAT LAKES WILL RESULT IN SNOW SHOWERS AND SQUALLS OVER PARTS OF THE NORTHERN MOUNTAINS AND LAUREL HIGHLANDS THROUGH MID DAY SATURDAY. PAZ004-200545- /O.CON.KCTP.LE.W.0002.000000T0000Z-070120T1600Z/ WARREN- 438 PM EST FRI JAN 19 2007 ...LAKE EFFECT SNOW WARNING REMAINS IN EFFECT UNTIL 11 AM EST SATURDAY... A LAKE EFFECT SNOW WARNING REMAINS IN EFFECT UNTIL 11 AM EST SATURDAY. SNOW SHOWERS WILL INCREASE INTO THE EVENING HOURS...WITH LOCALIZED HEAVY SQUALLS DEVELOPING AS WELL. SNOW ACCUMULATIONS BY SATURDAY AFTERNOON SHOULD RANGE FROM 4 TO 8 INCHES. THE TRADITIONAL SNOW BELT AREAS OF NORTHWEST WARREN COUNTY COULD SEE LOCALLY HIGHER AMOUNTS. THE SNOW WILL TAPER TO FLURRIES BY SATURDAY EVENING. IN ADDITION TO THE SNOW SHOWERS AND SQUALLS...BLOWING AND DRIFTING SNOW CAN BE EXPECTED AS WIND GUSTS IN EXCESS OF 25 TO 35 MPH DEVELOP. THIS MAY CAUSE LOCAL WHITE-OUT CONDITIONS AND MAKE FOR EXTREMELY HAZARDOUS TRAVEL. A LAKE EFFECT SNOW WARNING MEANS SIGNIFICANT AMOUNTS OF LAKE EFFECT SNOW ARE FORECAST...MAKING TRAVEL VERY HAZARDOUS. LAKE EFFECT SNOW SHOWERS TYPICALLY ALIGN THEMSELVES IN BANDS AND WILL LIKELY BE INTENSE ENOUGH TO DROP 1 TO SEVERAL INCHES OF SNOW PER HOUR FOR SEVERAL HOURS. VISIBILITIES VARY GREATLY AND CAN DROP TO ZERO WITHIN MINUTES. TRAVEL IS STRONGLY DISCOURAGED. IF YOU MUST TRAVEL...KEEP AN EXTRA FLASHLIGHT...FOOD...AND A CELLULAR PHONE IN YOUR VEHICLE IN CASE OF AN EMERGENCY. $$ PAZ010-017-024-033-200545- /O.EXT.KCTP.SN.Y.0002.070119T2138Z-070120T1600Z/ ELK-CLEARFIELD-CAMBRIA-SOMERSET- 438 PM EST FRI JAN 19 2007 ...SNOW ADVISORY NOW IN EFFECT UNTIL 11 AM EST SATURDAY... THE SNOW ADVISORY IS NOW IN EFFECT UNTIL 11 AM EST SATURDAY. SNOW SHOWERS WILL INCREASE INTO THE EVENING HOURS...WITH LOCALIZED HEAVY SQUALLS DEVELOPING AS WELL. SNOW ACCUMULATIONS BY SATURDAY AFTERNOON SHOULD RANGE FROM 3 TO 5 INCHES...WITH SOME LOCALLY HIGHER AMOUNTS POSSIBLE OVER THE RIDGE TOPS. THE SNOW WILL TAPER TO FLURRIES BY SATURDAY EVENING. IN ADDITION TO THE SNOW SHOWERS AND SQUALLS...BLOWING AND DRIFTING SNOW CAN BE EXPECTED AS WIND GUSTS IN EXCESS OF 25 TO 30 MPH DEVELOP. THIS MAY CAUSE LOCAL WHITE OUT CONDITIONS AND MAKE FOR EXTREMELY HAZARDOUS TRAVEL. A SNOW ADVISORY MEANS THAT PERIODS OF SNOW WILL CAUSE TRAVEL DIFFICULTIES. BE PREPARED FOR SNOW COVERED ROADS AND LIMITED VISIBILITIES...AND USE CAUTION WHILE DRIVING. $$ PAZ005-200545- /O.CON.KCTP.LE.Y.0003.000000T0000Z-070120T1600Z/ MCKEAN- 438 PM EST FRI JAN 19 2007 ...LAKE EFFECT SNOW ADVISORY REMAINS IN EFFECT UNTIL 11 AM EST SATURDAY... A LAKE EFFECT SNOW ADVISORY REMAINS IN EFFECT UNTIL 11 AM EST SATURDAY. SNOW SHOWERS WILL INCREASE INTO THE EVENING HOURS...WITH LOCALIZED HEAVY SQUALLS DEVELOPING AS WELL. SNOW ACCUMULATIONS BY SATURDAY AFTERNOON SHOULD RANGE FROM 3 TO 6 INCHES...WITH SOME LOCALLY HIGHER AMOUNTS POSSIBLE...ESPECIALLY OVER WESTERN PARTS OF THE COUNTY. THE SNOW WILL TAPER TO FLURRIES BY SATURDAY EVENING. IN ADDITION TO THE SNOW SHOWERS AND SQUALLS...BLOWING AND DRIFTING SNOW CAN BE EXPECTED AS WIND GUSTS IN EXCESS OF 25 TO 30 MPH DEVELOP. THIS MAY CAUSE LOCAL WHITE OUT CONDITIONS AND MAKE FOR EXTREMELY HAZARDOUS TRAVEL. A LAKE EFFECT SNOW ADVISORY MEANS LAKE EFFECT SNOW IS FORECAST THAT WILL MAKE TRAVEL DIFFICULT IN SOME AREAS. LAKE EFFECT SNOW SHOWERS TYPICALLY ALIGN THEMSELVES IN BANDS AND WILL LIKELY BE INTENSE ENOUGH TO DROP SEVERAL INCHES IN LOCALIZED AREAS. USE CAUTION WHEN TRAVELING. $$ LA CORTE
000 WWUS41 KCTP 200324 WSWCTP URGENT - WINTER WEATHER MESSAGE NATIONAL WEATHER SERVICE STATE COLLEGE PA 1024 PM EST FRI JAN 19 2007 ...LAKE EFFECT SNOWS EXPECTED TO CONTINUE OVER THE REGION TONIGHT THROUGH SATURDAY MORNING... .A STORM WILL INTENSIFY AS IT MOVES INTO THE CANADIAN MARITIMES TONIGHT AND SATURDAY. GUSTY NORTHWEST WINDS FLOWING ACROSS THE STILL UNFROZEN WATERS OF THE GREAT LAKES WILL RESULT IN SNOW SHOWERS AND SQUALLS OVER PARTS OF THE NORTHERN MOUNTAINS AND LAUREL HIGHLANDS THROUGH MID DAY SATURDAY. PAZ004-201330- /O.CON.KCTP.LE.W.0002.000000T0000Z-070120T1600Z/ WARREN- 1024 PM EST FRI JAN 19 2007 ...LAKE EFFECT SNOW WARNING REMAINS IN EFFECT UNTIL 11 AM EST SATURDAY... A LAKE EFFECT SNOW WARNING REMAINS IN EFFECT UNTIL 11 AM EST SATURDAY. SNOW SHOWERS AND LOCALLY HEAVY SQUALLS WILL CONTINUE OVERNIGHT INTO SATURDAY MORNING. SNOW ACCUMULATIONS BY SATURDAY AFTERNOON SHOULD RANGE FROM 4 TO 8 INCHES. THE TRADITIONAL SNOW BELT AREAS OF NORTHWEST WARREN COUNTY COULD SEE LOCALLY HIGHER AMOUNTS. THE SNOW WILL TAPER TO FLURRIES BY SATURDAY EVENING. IN ADDITION TO THE SNOW SHOWERS AND SQUALLS...BLOWING AND DRIFTING SNOW CAN BE EXPECTED AS WIND GUSTS IN EXCESS OF 25 MPH DEVELOP. THIS MAY CAUSE LOCAL WHITE-OUT CONDITIONS AND MAKE FOR EXTREMELY HAZARDOUS TRAVEL. A LAKE EFFECT SNOW WARNING MEANS SIGNIFICANT AMOUNTS OF LAKE EFFECT SNOW ARE FORECAST...MAKING TRAVEL VERY HAZARDOUS. LAKE EFFECT SNOW SHOWERS TYPICALLY ALIGN THEMSELVES IN BANDS AND WILL LIKELY BE INTENSE ENOUGH TO DROP 1 TO SEVERAL INCHES OF SNOW PER HOUR FOR SEVERAL HOURS. VISIBILITIES VARY GREATLY AND CAN DROP TO ZERO WITHIN MINUTES. TRAVEL IS STRONGLY DISCOURAGED. IF YOU MUST TRAVEL...KEEP AN EXTRA FLASHLIGHT...FOOD...AND A CELLULAR PHONE IN YOUR VEHICLE IN CASE OF AN EMERGENCY. $$ PAZ005-201330- /O.CON.KCTP.LE.Y.0003.000000T0000Z-070120T1600Z/ MCKEAN- 1024 PM EST FRI JAN 19 2007 ...LAKE EFFECT SNOW ADVISORY REMAINS IN EFFECT UNTIL 11 AM EST SATURDAY... A LAKE EFFECT SNOW ADVISORY REMAINS IN EFFECT UNTIL 11 AM EST SATURDAY. SNOW SHOWERS AND LOCALLY HEAVY SQUALLS WILL CONTINUE OVERNIGHT INTO SATURDAY MORNING. SNOW ACCUMULATIONS BY SATURDAY AFTERNOON SHOULD RANGE FROM 3 TO 6 INCHES...WITH SOME LOCALLY HIGHER AMOUNTS POSSIBLE...ESPECIALLY OVER WESTERN PARTS OF THE COUNTY. THE SNOW WILL TAPER TO FLURRIES BY SATURDAY EVENING. IN ADDITION TO THE SNOW SHOWERS AND SQUALLS...BLOWING AND DRIFTING SNOW CAN BE EXPECTED AS WIND GUSTS IN EXCESS OF 25 MPH DEVELOP. THIS MAY CAUSE LOCAL WHITE-OUT CONDITIONS AND MAKE FOR EXTREMELY HAZARDOUS TRAVEL. A LAKE EFFECT SNOW ADVISORY MEANS LAKE EFFECT SNOW IS FORECAST THAT WILL MAKE TRAVEL DIFFICULT IN SOME AREAS. LAKE EFFECT SNOW SHOWERS TYPICALLY ALIGN THEMSELVES IN BANDS AND WILL LIKELY BE INTENSE ENOUGH TO DROP SEVERAL INCHES IN LOCALIZED AREAS. USE CAUTION WHEN TRAVELING. $$ PAZ010-017-024-033-201330- /O.CON.KCTP.SN.Y.0002.000000T0000Z-070120T1600Z/ ELK-CLEARFIELD-CAMBRIA-SOMERSET- 1024 PM EST FRI JAN 19 2007 ...SNOW ADVISORY REMAINS IN EFFECT UNTIL 11 AM EST SATURDAY... A SNOW ADVISORY REMAINS IN EFFECT UNTIL 11 AM EST SATURDAY. SNOW SHOWERS AND LOCALLY HEAVY SQUALLS WILL CONTINUE OVERNIGHT INTO SATURDAY MORNING. SNOW ACCUMULATIONS BY SATURDAY AFTERNOON SHOULD RANGE FROM 3 TO 5 INCHES...WITH SOME LOCALLY HIGHER AMOUNTS POSSIBLE OVER THE RIDGE TOPS. THE SNOW WILL TAPER TO FLURRIES BY SATURDAY EVENING. IN ADDITION TO THE SNOW SHOWERS AND SQUALLS...BLOWING AND DRIFTING SNOW CAN BE EXPECTED AS WIND GUSTS IN EXCESS OF 25 MPH DEVELOP. THIS MAY CAUSE LOCAL WHITE-OUT CONDITIONS AND MAKE FOR EXTREMELY HAZARDOUS TRAVEL. A SNOW ADVISORY MEANS THAT PERIODS OF SNOW WILL CAUSE TRAVEL DIFFICULTIES. BE PREPARED FOR SNOW COVERED ROADS AND LIMITED VISIBILITIES...AND USE CAUTION WHILE DRIVING. $$
000 WWUS41 KCTP 200906 WSWCTP URGENT - WINTER WEATHER MESSAGE NATIONAL WEATHER SERVICE STATE COLLEGE PA 406 AM EST SAT JAN 20 2007 PAZ004-201600- /O.CON.KCTP.LE.W.0002.000000T0000Z-070120T1600Z/ WARREN- 406 AM EST SAT JAN 20 2007 ...LAKE EFFECT SNOW WARNING REMAINS IN EFFECT UNTIL 11 AM EST THIS MORNING... A LAKE EFFECT SNOW WARNING REMAINS IN EFFECT UNTIL 11 AM EST THIS MORNING. SNOW SHOWERS WILL CONTINUE TO ACCUMULATE THIS MORNING. TOTAL SNOW ACCUMULATIONS BY THIS AFTERNOON SHOULD RANGE FROM 4 TO 8 INCHES. THE TRADITIONAL SNOW BELT AREAS OF NORTHWEST WARREN COUNTY COULD SEE LOCALLY HIGHER AMOUNTS. THE SNOW WILL TAPER TO FLURRIES BY EVENING. IN ADDITION TO THE SNOW SHOWERS AND SQUALLS...BLOWING AND DRIFTING SNOW CAN BE EXPECTED AS WIND GUSTS IN EXCESS OF 25 MPH DEVELOP. THIS MAY CAUSE OCCASIONAL WHITE-OUT CONDITIONS IN SOME LOCATIONS AND MAKE FOR EXTREMELY HAZARDOUS TRAVEL. A LAKE EFFECT SNOW WARNING MEANS SIGNIFICANT AMOUNTS OF LAKE EFFECT SNOW ARE FORECAST...MAKING TRAVEL VERY HAZARDOUS. LAKE EFFECT SNOW SHOWERS TYPICALLY ALIGN THEMSELVES IN BANDS AND WILL LIKELY BE INTENSE ENOUGH TO DROP 1 TO SEVERAL INCHES OF SNOW PER HOUR FOR SEVERAL HOURS. VISIBILITIES VARY GREATLY AND CAN DROP TO ZERO WITHIN MINUTES. TRAVEL IS STRONGLY DISCOURAGED. IF YOU MUST TRAVEL...KEEP AN EXTRA FLASHLIGHT...FOOD...AND A CELLULAR PHONE IN YOUR VEHICLE IN CASE OF AN EMERGENCY. $$ PAZ005-201600- /O.CON.KCTP.LE.Y.0003.000000T0000Z-070120T1600Z/ MCKEAN- 406 AM EST SAT JAN 20 2007 ...LAKE EFFECT SNOW ADVISORY REMAINS IN EFFECT UNTIL 11 AM EST THIS MORNING... A LAKE EFFECT SNOW ADVISORY REMAINS IN EFFECT UNTIL 11 AM EST THIS MORNING. SNOW SHOWERS WILL CONTINUE OVER THE AREA THIS MORNING. TOTAL SNOW ACCUMULATIONS BY THIS AFTERNOON SHOULD RANGE FROM 3 TO 6 INCHES...WITH SOME LOCALLY HIGHER AMOUNTS POSSIBLE...ESPECIALLY OVER WESTERN PARTS OF THE COUNTY. THE SNOW WILL TAPER TO FLURRIES BY THIS EVENING. IN ADDITION TO THE SNOW SHOWERS AND SQUALLS...BLOWING AND DRIFTING SNOW CAN BE EXPECTED AS WIND GUSTS IN EXCESS OF 25 MPH DEVELOP. THIS MAY CAUSE LOCAL WHITE-OUT CONDITIONS AND MAKE FOR EXTREMELY HAZARDOUS TRAVEL. A LAKE EFFECT SNOW ADVISORY MEANS LAKE EFFECT SNOW IS FORECAST THAT WILL MAKE TRAVEL DIFFICULT IN SOME AREAS. LAKE EFFECT SNOW SHOWERS TYPICALLY ALIGN THEMSELVES IN BANDS AND WILL LIKELY BE INTENSE ENOUGH TO DROP SEVERAL INCHES IN LOCALIZED AREAS. USE CAUTION WHEN TRAVELING. $$ PAZ010-017-024-033-201600- /O.CON.KCTP.SN.Y.0002.000000T0000Z-070120T1600Z/ ELK-CLEARFIELD-CAMBRIA-SOMERSET- 406 AM EST SAT JAN 20 2007 ...SNOW ADVISORY REMAINS IN EFFECT UNTIL 11 AM EST THIS MORNING... A SNOW ADVISORY REMAINS IN EFFECT UNTIL 11 AM EST THIS MORNING. SNOW SHOWERS WILL CONTINUE THIS MORNING. TOTAL SNOW ACCUMULATIONS BY THIS AFTERNOON SHOULD RANGE FROM 3 TO 5 INCHES...WITH SOME LOCALLY HIGHER AMOUNTS POSSIBLE OVER THE RIDGE TOPS. THE SNOW WILL TAPER TO FLURRIES BY THIS EVENING. IN ADDITION TO THE SNOW SHOWERS AND SQUALLS...BLOWING AND DRIFTING SNOW CAN BE EXPECTED AS WIND GUSTS IN EXCESS OF 25 MPH DEVELOP. THIS MAY CAUSE LOCAL WHITE-OUT CONDITIONS AND MAKE FOR EXTREMELY HAZARDOUS TRAVEL. A SNOW ADVISORY MEANS THAT PERIODS OF SNOW WILL CAUSE TRAVEL DIFFICULTIES. BE PREPARED FOR SNOW COVERED ROADS AND LIMITED VISIBILITIES...AND USE CAUTION WHILE DRIVING. $$ DEVOIR
000 WWUS41 KCTP 201600 WSWCTP URGENT - WINTER WEATHER MESSAGE NATIONAL WEATHER SERVICE STATE COLLEGE PA 1100 AM EST SAT JAN 20 2007 PAZ017-024-033-201700- /O.CAN.KCTP.SN.Y.0002.000000T0000Z-070120T1600Z/ CLEARFIELD-CAMBRIA-SOMERSET- 1100 AM EST SAT JAN 20 2007 ...SNOW ADVISORY IS CANCELLED... THE NATIONAL WEATHER SERVICE IN STATE COLLEGE HAS CANCELLED THE SNOW ADVISORY. SCATTERED SNOW SHOWERS AND A FEW SQUALLS WILL BRING LOCALLY UP TO ONE INCH OF SNOW THIS AFTERNOON...BUT WIDESPREAD SNOW SHOWERS WILL BEGIN TO DIMINISH THROUGHOUT THIS AFTERNOON. $$ PAZ004-202100- /O.EXT.KCTP.LE.W.0002.000000T0000Z-070120T2100Z/ WARREN- 1100 AM EST SAT JAN 20 2007 ...LAKE EFFECT SNOW WARNING NOW IN EFFECT UNTIL 4 PM EST THIS AFTERNOON... THE LAKE EFFECT SNOW WARNING IS NOW IN EFFECT UNTIL 4 PM EST THIS AFTERNOON. SNOW SHOWERS AND NARROW BANDS OF HEAVY SNOW SQUALLS WILL CONTINUE IN MANY AREAS THIS AFTERNOON. ADDITIONAL ACCUMULATION WILL RANGE FROM 1 TO 3 INCHES. THE SNOW WILL TAPER TO FLURRIES BY EVENING. IN ADDITION TO THE SNOW SHOWERS AND SQUALLS...BLOWING AND DRIFTING SNOW CAN BE EXPECTED AS WIND GUSTS IN EXCESS OF 25 MPH DEVELOP. THIS MAY CAUSE OCCASIONAL WHITE-OUT CONDITIONS IN SOME LOCATIONS AND MAKE FOR EXTREMELY HAZARDOUS TRAVEL. A LAKE EFFECT SNOW WARNING MEANS SIGNIFICANT AMOUNTS OF LAKE EFFECT SNOW ARE FORECAST...MAKING TRAVEL VERY HAZARDOUS. LAKE EFFECT SNOW SHOWERS TYPICALLY ALIGN THEMSELVES IN BANDS AND WILL LIKELY BE INTENSE ENOUGH TO DROP 1 TO SEVERAL INCHES OF SNOW PER HOUR FOR SEVERAL HOURS. VISIBILITIES VARY GREATLY AND CAN DROP TO ZERO WITHIN MINUTES. TRAVEL IS STRONGLY DISCOURAGED. IF YOU MUST TRAVEL...KEEP AN EXTRA FLASHLIGHT...FOOD...AND A CELLULAR PHONE IN YOUR VEHICLE IN CASE OF AN EMERGENCY. $$ PAZ005-202100- /O.EXT.KCTP.LE.Y.0003.000000T0000Z-070120T2100Z/ MCKEAN- 1100 AM EST SAT JAN 20 2007 ...LAKE EFFECT SNOW ADVISORY NOW IN EFFECT UNTIL 4 PM EST THIS AFTERNOON... THE LAKE EFFECT SNOW ADVISORY IS NOW IN EFFECT UNTIL 4 PM EST THIS AFTERNOON. SNOW SHOWERS AND NARROW BANDS OF HEAVY SNOW SQUALLS WILL BRING ANOTHER COATING TO 2 INCHES OF SNOW THIS AFTERNOON. THE SNOW WILL TAPER TO FLURRIES BY THIS EVENING. IN ADDITION TO THE SNOW SHOWERS AND SQUALLS...BLOWING AND DRIFTING SNOW CAN BE EXPECTED AS WIND GUSTS IN EXCESS OF 25 MPH DEVELOP. THIS MAY CAUSE LOCAL WHITE-OUT CONDITIONS AND MAKE FOR EXTREMELY HAZARDOUS TRAVEL. A LAKE EFFECT SNOW ADVISORY MEANS LAKE EFFECT SNOW IS FORECAST THAT WILL MAKE TRAVEL DIFFICULT IN SOME AREAS. LAKE EFFECT SNOW SHOWERS TYPICALLY ALIGN THEMSELVES IN BANDS AND WILL LIKELY BE INTENSE ENOUGH TO DROP SEVERAL INCHES IN LOCALIZED AREAS. USE CAUTION WHEN TRAVELING. $$ PAZ010-202100- /O.EXT.KCTP.SN.Y.0002.000000T0000Z-070120T2100Z/ ELK- 1100 AM EST SAT JAN 20 2007 ...SNOW ADVISORY NOW IN EFFECT UNTIL 4 PM EST THIS AFTERNOON... THE SNOW ADVISORY IS NOW IN EFFECT UNTIL 4 PM EST THIS AFTERNOON. SNOW SHOWERS AND NARROW BANDS OF HEAVY SNOW SQUALLS WILL BRING ANOTHER COATING TO 2 INCHES OF SNOW THIS AFTERNOON. THE SNOW WILL TAPER TO FLURRIES BY THIS EVENING. IN ADDITION TO THE SNOW SHOWERS AND SQUALLS...BLOWING AND DRIFTING SNOW CAN BE EXPECTED AS WIND GUSTS IN EXCESS OF 25 MPH DEVELOP. THIS MAY CAUSE LOCAL WHITE-OUT CONDITIONS AND MAKE FOR EXTREMELY HAZARDOUS TRAVEL. A SNOW ADVISORY MEANS THAT PERIODS OF SNOW WILL CAUSE TRAVEL DIFFICULTIES. BE PREPARED FOR SNOW COVERED ROADS AND LIMITED VISIBILITIES...AND USE CAUTION WHILE DRIVING. $$
What forecasters said that day
The local office's own words before this lake effect snow warning 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 lake effect snow warning went out at Jan 18, 8:38 PM EST, 6 hours 3 minutes earlier.
Area forecast discussion, Jan 18, 8:38 PM EST, 6 hours 3 minutes before
AREA FORECAST DISCUSSION NATIONAL WEATHER SERVICE STATE COLLEGE PA 838 PM EST THU JAN 18 2007 .SHORT TERM /REST OF TONIGHT/... VERY LIGHT SNOW ACSSOCIATED WITH LEFT EXIT REGION OF POTENT UPPER JET /170+ KTS/ ACROSS OHIO VALLEY NOW JUST ENTERING THE NW MTS. VSBYS UPSTREAM ARE STILL ABOVE 5SM IN -SN...SO CURRENT WORDING FOR CHC EARLY AND LIKELY POPS LATER TONIGHT IN THAT AREA JUST FINE. ALSO...TIMING OF EARLY MORNING FRONTAL PASSAGE IS RIGHT ON TARGET...AS IT BLASTS THRU BETWEEN 10Z AND 15Z. WIND REALLY KICKS UP DURING THE DAY WITH GOOD CHANNELLING/LOW DIR SHEAR AND DEEPENING LOW UP TO THE NE. WITH VERY FLUFFY SNOW EXPECTED...THERE COULD BE LOTS OF BLOWING SNOW...ALSO SUPPORTING THE GOING FCST. SO FAR NO REPORTS OF SNOWFLAKES AT HARRISBURG /KMDT/KCXY/ NOR LANCASTER /KLNS/ NOR YORK /KTHV/. THE SNOW-LESS WINTER CONTINUES FOR THE SOUTHEASTERN THIRD OF OUR CWA. GAVE SERIOUS CONSIDERATION TO WHAT TO DO WITH THE WATCHES CURR IN EFFECT AND THE SNOW ACCUMS FOR FRI-SAT. BEST CLUSTERING OF PRECIP TOTALS IN THE 15Z SREF PLUMES IN THE LAKE EFFECT SNOW WATCH AREA IS GENERALLY BTWN THE 0.25 TO 0.35 INCHES WITH EXPECTED SNOW:WATER RATIOS OF PERHAPS 20:1...THIS WOULD BE BARELY/BORDERLINE WARNING FOR WARREN COUNTY - AS WE NEED 6+ INCHES IN 12 HRS. THE LAURELS LOOK DRIER THAN THAT...WITH WESTERLY FLOW INTO/UPSTREAM-OF THE LAURELS USUALLY NOT CONDUCIVE TO PULLING RICH MOISTURE DOWN FROM LAKE HURON OR LAKE ERIE. THIS IS SUPPORTED BY THE HPC GUIDANCE OF LESS THAN 2 INCH ACCUMS IN THE LAURELS. WOULD NOT EXPECT THEM TO REACH WARNING CRITERIA /WHICH ARE 6/12HRS OR 8/24HRS/...BUT THOSE MOUNTAINS ARE QUITE AN OBSTACLE. WITH UNCERTAINTY STILL VERY HIGH...WILL CHOOSE TO LEAVE ALL THE WATCH FLAGS AS IS...AND ALLOW MID SHIFT TO FURTHER ASSESS THE SITUATION. WILL TOUCH UP THE WATCH STATEMENTS AND SPS...AND SOME OF THE ZFP TEXT WORDING FOR OVERNIGHT. && .PREV DISCUSSION... /ISSUED 722 PM EST THU JAN 18 2007/ AVIATION /00Z-24Z/... GRADUALLY LOWERING MID LVL AC/AS WILL BE THE RULE ACROSS THE CENTRAL AND EASTERN TERMINALS THRU 06Z. LOWER SC BLW THE MID LVL CLOUD DECK NOW MOVING ACROSS CENTRAL OH WILL BEGIN TO AFFECT THE WESTERN AIRFIELDS BTWN 03-06Z...BRINGING OCNL MVFR CIGS AND SCT -SHSN ASSOC WITH LARGE SCALE ASCENT UNDER A 160+KT ULJ AND AHEAD OF AN APPROACHING WRN GRT LKS MID LVL TROF/SFC CLD FNT. XPECT FLYING CONDS TO CONTINUE TO DETERIORATE AFT 06Z AT KBFD/KJST AS LES SNOW EVENT BEGINS TO UNFOLD. IFR/LIFR CONDS SEEM LKLY TOWARD MORNING. FURTHER EAST OVER THE CENTRAL SITES /AOO-UNV/ LOOK FOR CIGS TO LOWER TO MVFR AROUND 09Z WITH SCT -SHSN REDUCING VISBYS AT TIMES TO 3-5SM THRU THE EARLY AM. EASTERN AIRFIELDS SHOULD STAY HIGH END VFR THRU THE PD WITH OCNL -SHSN AT KIPT. KMDT SHOULD NOT SEE MUCH MORE THAN A STRAY FLURRY...BENEFITING FROM DOWNSLOPE FLOW. S/SSW SFC WNDS /6-9KTS/ WILL SLOWLY INCREASE AHEAD OF APPROACHING SYSTEM...STIFFENING TO AOA 10KTS AND VEERING TO MORE WSWERLY. THE EXCEPTION HERE WILL KIPT WITH ITS LWR ELEVATION ALLOWING FOR A MORE LGT/VRB AND BACKED SFC WND. SFC CLD FRONT TO TRAVERSE CENTRAL PA BTWN 11-16Z WITH SFC FLOW CONTINUING TO VEER SLIGHTLY TO WNW. WINDS SHOULD REALLY PICK UP IN THE WAKE OF THE FROPA...BCMG SUSTAINED 12-16KTS WITH GUSTS 20-30KTS. LASTLY...REGIONAL RADAR SHOWING PLENTY OF RETURNS ALOFT WITH THE LLVLS STILL TO DRY FOR THE PCPN TO MAKE IT ALL THE WAY TO THE SFC. WHILE THIS IS OFF LITTLE CONCERN NEAR THE GROUND...PIREPS ACROSS WRN PA OVER THE LAST FEW HOURS HAVE REPORTED SOME LGT RM ICING BTWN THE LYRD MID LVL CLOUDS AS WELL AS SOME FZRA AROUND 10KFT. IN ADDITION...MOST REPORTS ALSO INDICATE LGT TO MOD CHOP AT FL350+ ASSOC WITH THE AFOREMENTIONED ULJ /WV288161KT/. PREV DISCUSSION... /ISSUED 326 PM EST THU JAN 18 2007/ SHORT TERM /TONIGHT THROUGH FRIDAY NIGHT/... TWO SYSTEMS TO AFFECT THE CWA THROUGH FRIDAY. THE FIRST IS A SURFACE LOW MOVING NORTH ALONG THE ATLANTIC COAST. THE SECOND IS A COLD/ARCTIC FRONT MARCHING EAST THROUGH THE GREAT LAKES. THE STORM THAT MOVED THROUGH THE CAROLINAS TODAY WILL MOVE NORTH ALONG THE EAST COAST BUT WILL REMAIN FAR ENOUGH EAST...WITH HELP FROM THE APPROACHING FRONT...THAT ACCUMULATING PRECIPITATION WILL REMAIN EAST OF THE CWA. WE DO EXPECT LIGHT SNOW SHOWERS/FLURRIES OVER MOST LOCATIONS EITHER WITH THE EAST COAST LOW OR THE APPROACHING FRONT. THE COLD FRONT WILL SWEEP ACROSS THE AREA FRIDAY MORNING. INITIALLY WINDS WILL BECOME WESTERLY FRIDAY MORNING. THIS WILL SET UP A LAKE EFFECT SNOW SHOWERS ACROSS THE NORTHERN COUNTIES EARLY IN THE DAY. LAKE TEMPS NEAR 40 WILL PROVIDE MOST OF THE INSTABILITY BUT EXPECT SNOW SHOWERS TO INCREASE IN INTENSITY AS THE COLDER AIR MOVES IN DURING THE AFTERNOON AND EVENING. TIME HEIGHT CROSS SECTIONS INDICATE PLENTY OF LOW LEVEL MOISTURE...LIMITED SHEAR...AND FAVORABLE SNOW GROWTH AREA. LEFT THE EARLIER ISSUED WATCH FOR WARREN AND MCKEAN RIDE FOR ONE MORE PERIOD SINCE HEAVIEST ACTIVITY WOULD DEVELOP LATER ON FRIDAY. WANT TO SEE IF CONDITIONS WILL SET UP TO DRIVE BANDS INTO MCKEAN AS WELL. LATER FRIDAY...850 TO 700 MB WINDS TURN MORE TO THE NORTHWEST WHICH WILL SEND THE LAKE BANDS INTO THE LAUREL MOUNTAINS. ALSO HAVE A WATCH POSTED FOR THAT AREA BUT WILL WAIT ANOTHER MODEL RUN TO UPGRADE OR GO ADVISORY. AS THE LOW WRAPS UP OFF OF THE CANADIAN MARITIMES...WINDS WILL PICK UP ALLOWING FOR BLOWING SNOW OVER THE WESTERN HALF OF THE FORECAST AREA. LONG TERM /SATURDAY THROUGH THURSDAY/... BACK EDGE OF TROUGH FINALLY MOVES EAST ON SAT AND SNOW SHOWER ACTIVITY IN THE W AND N WILL TAPER OFF. SURFACE HIGH PRESSURE BUILDS IN FOR SAT NIGHT/EARLY SUN WITH MID/HIGH CLOUDS IN DIRTY FLOW OVERHEAD. TEMPS SAT NIGHT WILL BE ABLE TO DROP IN SNOW COVERED AREAS TO THE SINGLE DIGITS WHILE TEENS WILL BE THE RULE ELSEWHERE. NEXT WAVE...MAINLY A MID LEVEL SYSTEM...SLIDES ACROSS THE OHIO VALLEY BRINGING A CHANCE FOR MAINLY LIGHT SNOW LATE SUNDAY AND SUN NIGHT. SLIGHTLY COOLER AIR SLIPS IN BEHIND...BUT TEMPS WILL REMAIN NEARLY NORMAL. STORM OVER SOUTHERN PLAINS SLIDES EAST NEXT WEEK AND GETS SHUNTED TO OUR SOUTH. THIS WILL BE FOLLOWED BY A DIGGING TROUGH IN THE NORTHERN FLOW BRINGING A SURGE OF COLDER AIR WITH SCATTERED SNOW SHOWERS LATER IN THE WEEK. RXR AVIATION /20Z-18Z/... MID LEVEL CLOUDS ARRIVING IN RESPONSE TO LOW OFF OF THE EAST COAST AND APPROACHING FRONT. EXPECT SCATTERED LIGHT SNOW SHOWERS TONIGHT AS BOTH SYSTEMS RING THE CWA. DO NOT EXPECT CEILINGS AND VISIBILITIES TO DROP BELOW VFR. ADDED VCSH IN LOWER ELEVATION AIRFIELDS AS DO NOT FEEL THIS WILL BE WIDESPREAD OVER THESE LOCATIONS. THE USUAL LAKE EFFECT AIRFIELDS OF KJST AND KBFD WILL SEE HEAVIER SQUALLS INCREASING DURING THE DAY FRIDAY. WEST WINDS SHIFT TO NORTHWEST AS THE EAST COAST SURFACE LOW WRAPS UP AS IT MOVES NORTH. THIS WILL ALLOW FOR BLOWING SNOW AT TIMES AS WELL. && .CTP WATCHES/WARNINGS/ADVISORIES... LAKE EFFECT SNOW WATCH FROM FRIDAY MORNING THROUGH SATURDAY MORNING FOR PAZ004-005. WINTER STORM WATCH FROM FRIDAY MORNING THROUGH SATURDAY MORNING FOR PAZ024-033. && SHORT TERM...DANGELO
Hazardous weather outlook, Jan 18, 4:08 AM EST, 22 hours 33 minutes before
HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE STATE COLLEGE PA 408 AM EST THU JAN 18 2007 PAZ004-005-024-033-190915- WARREN-MCKEAN-CAMBRIA-SOMERSET- 408 AM EST THU JAN 18 2007 THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF CENTRAL PENNSYLVANIA. .DAY ONE...TODAY AND TONIGHT NO HAZARDOUS WEATHER IS EXPECTED TODAY. .DAYS TWO THROUGH SEVEN...FRIDAY THROUGH WEDNESDAY WINTER STORM WATCHES FOR SNOW AND LAKE EFFECT SNOW SHOWERS ARE IN EFFECT FOR THE REGION FRIDAY INTO SATURDAY. COLD AIR FLOWING OVER THE UNFROZEN GREAT LAKES WILL CAUSE LOCALLY HEAVY SNOW SHOWERS AND SQUALLS TO DEVELOP. THE POTENTIAL EXISTS FOR 6 INCHES OR MORE SNOW OVER PARTS OF NORTHWESTERN PENNSYLVANIA AND THE LAUREL HIGHLANDS. .SPOTTER INFORMATION STATEMENT... SPOTTER ACTIVATION MAY BE NEEDED. PAZ006-010>012-017>019-025>028-034>037-041-042-045-046-049>053- 056>059-063>066-190915- POTTER-ELK-CAMERON-NORTHERN CLINTON-CLEARFIELD-NORTHERN CENTRE- SOUTHERN CENTRE-BLAIR-HUNTINGDON-MIFFLIN-JUNIATA-BEDFORD-FULTON- FRANKLIN-TIOGA-NORTHERN LYCOMING-SULLIVAN-SOUTHERN CLINTON- SOUTHERN LYCOMING-UNION-SNYDER-MONTOUR-NORTHUMBERLAND-COLUMBIA- PERRY-DAUPHIN-SCHUYLKILL-LEBANON-CUMBERLAND-ADAMS-YORK-LANCASTER- 408 AM EST THU JAN 18 2007 THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF CENTRAL PENNSYLVANIA. .DAY ONE...TODAY AND TONIGHT NO HAZARDOUS WEATHER IS EXPECTED TODAY. .DAYS TWO THROUGH SEVEN...FRIDAY THROUGH WEDNESDAY SCATTERED SNOW SHOWERS AND FLURRIES ARE EXPECTED TO DEVELOP FRIDAY AND LAST INTO SATURDAY. WHILE SOME AREAS COULD SEE A FEW INCHES OF SNOW...NO WARNINGS OR ADVISORIES ARE ANTICIPATED AT THIS TIME. .SPOTTER INFORMATION STATEMENT... SPOTTER ACTIVATION IS NOT ANTICIPATED.
In the hours before
Special weather statement, Jan 18, 9:16 PM EST, 5 hours 25 minutes before
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE STATE COLLEGE PA 916 PM EST THU JAN 18 2007 PAZ006-010>012-017-018-191000- POTTER-ELK-CAMERON-NORTHERN CLINTON-CLEARFIELD-NORTHERN CENTRE- 916 PM EST THU JAN 18 2007 ...LAKE EFFECT SNOW SHOWERS AND GUSTY WINDS WILL RETURN TO THE AREA... A COLD FRONT WILL MOVE THROUGH THE AREA ON FRIDAY MORNING. STRONG WEST WINDS BEHIND THIS FRONT WILL BLOW OVER THE RELATIVELY WARM WATERS OF LAKE ERIE. SNOW SHOWERS AND A FEW SQUALLS WILL DEVELOP DURING THE DAY FRIDAY AND CONTINUE INTO SATURDAY MORNING. TWO TO FOUR INCHES OF SNOW WILL BE COMMON ACROSS THE AREA BY SATURDAY MORNING. ALONG WITH THE SNOW SHOWERS AND SQUALLS...WEST TO NORTHWEST WINDS WILL INCREASE DURING THE DAY FRIDAY. WINDS WILL GUST UP TO 30 MPH WHICH WILL RESULT IN AREAS OF BLOWING SNOW. PLEASE USE CAUTION IF YOU PLAN TO TRAVEL ON FRIDAY OR SATURDAY AS ROAD CONDITIONS AND VISIBILITIES CAN CHANGE RAPIDLY IN A SHORT PERIOD OF TIME DURING LAKE EFFECT SNOWS. DANGELO
The office that day
Everything else NWS State College, PA issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jan 19, 2:41 AM EST | Lake Effect Snow Advisory | CTP | McKean | 37 hr |
| Jan 19, 3:05 PM EST | Snow Advisory | CTP | Cambria, Clearfield, Elk, Somerset | 25 hr |
Nearby
Lake Effect Snow Warnings in Pennsylvania, 2007Every lake effect snow warning in 2007
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.