Alert archive / California / Winter Weather Advisories in 2012
Winter Weather Advisory 21, NWS Reno, NV
NWS Reno, NV issued this winter weather advisory at Dec 11, 2012, 4:13 AM PST for 7 counties in California; Douglas County, Washoe County, Nevada. It took effect at Dec 11, 2012, 10:00 PM PST. It was in force for 16 hr.
The area
The counties it named.
The facts
- Issued
- Dec 11, 2012, 4:13 AM PST (12:13 UTC)
- In effect from
- Dec 11, 2012, 10:00 PM PST
- Expired
- Dec 12, 2012, 2:12 PM PST
- In force
- 16 hr
- Issued by
- NWS Reno, NV
Counties Alpine County, CA, El Dorado County, CA, Lassen County, CA, Nevada County, CA, Placer County, CA, Plumas County, CA, Sierra County, CA, Douglas County, NV, Washoe County, NV
The radar
The Reno radar (KRGX), 80 km from the middle of the area, began a volume at 12:15 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
Reno, NV (KREV), launched 12:00Z, 0.2 hours before the alert went out and 184 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
- 2339 m above ground
- 0-6 km bulk shear
- 36 kt
- 0-1 km storm-relative helicity
- 61 m²/s²
- 0-3 km storm-relative helicity
- 124 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
752 WWUS45 KREV 111213 WSWREV URGENT - WINTER WEATHER MESSAGE NATIONAL WEATHER SERVICE RENO NV 413 AM PST TUE DEC 11 2012 ...COLDER STORM SYSTEM TO BRING SNOW TO THE LAKE TAHOE BASIN... .LOW PRESSURE OFF THE NORTHWEST US COAST WILL MOVE QUICKLY SOUTHEAST ACROSS NORTHERN CALIFORNIA LATE TONIGHT THROUGH WEDNESDAY. THIS STORM WILL BRING MUCH COLDER AIR WITH PERIODS OF SNOW TO THE SIERRA AND THE LAKE TAHOE BASIN. THE HEAVIEST SNOW IS EXPECTED WEDNESDAY MORNING...WITH ADDITIONAL BANDS OF SNOW CONTINUING THROUGH WEDNESDAY EVENING. CAZ072-NVZ002-120000- /O.NEW.KREV.WW.Y.0021.121212T0600Z-121213T0600Z/ GREATER LAKE TAHOE AREA- INCLUDING THE CITIES OF...SOUTH LAKE TAHOE...TRUCKEE... INCLINE VILLAGE 413 AM PST TUE DEC 11 2012 ...WINTER WEATHER ADVISORY IN EFFECT FROM 10 PM THIS EVENING TO 10 PM PST WEDNESDAY... THE NATIONAL WEATHER SERVICE IN RENO HAS ISSUED A WINTER WEATHER ADVISORY FOR SNOW...WHICH IS IN EFFECT FROM 10 PM THIS EVENING TO 10 PM PST WEDNESDAY. * TIMING: SNOW WILL INCREASE LATE TONIGHT AND CONTINUE THROUGH WEDNESDAY MORNING. ADDITIONAL BANDS OF SNOW ARE EXPECTED TO DEVELOP ACROSS PORTIONS OF THE TAHOE BASIN WEDNESDAY AFTERNOON AND EVENING. * SNOW ACCUMULATIONS: 4 TO 8 INCHES...WITH LOCALLY UP TO 12 INCHES ABOVE 7000 FEET AND IN AREAS WEST OF HIGHWAY 89. * WINDS: SOUTHWEST 15 TO 25 MPH WITH GUSTS TO 45 MPH TONIGHT... DECREASING TO 10 TO 20 MPH WITH GUSTS UP TO 35 MPH ON WEDNESDAY. RIDGE GUSTS UP TO 75 MPH. * IMPACTS: THE HEAVIEST SNOW IS LIKELY TO OCCUR DURING THE WEDNESDAY MORNING COMMUTE...PRODUCING SNOWFALL RATES AROUND ONE INCH PER HOUR WITH POOR VISIBILITY. SLICK ROADS WITH CHAIN CONTROLS ARE EXPECTED THROUGH WEDNESDAY EVENING. PRECAUTIONARY/PREPAREDNESS ACTIONS... SNOW IS EXPECTED TO POSE AN INCONVENIENCE TO TRAVELERS. ROADS WILL BECOME SLICK AND HAZARDOUS...WITH SNOW AND ICE FIRST DEVELOPING ON BRIDGES AND OVERPASSES. MOTORISTS SHOULD SLOW DOWN AND USE CAUTION. CHECK OUR WEBSITE AT WEATHER.GOV/RENO OR LISTEN TO NOAA WEATHER RADIO FOR UPDATES ON THIS SITUATION. && $$ MJD HTTP://WEATHER.GOV/RENO
4 follow-up statements
162 WWUS45 KREV 112245 WSWREV URGENT - WINTER WEATHER MESSAGE NATIONAL WEATHER SERVICE RENO NV 245 PM PST TUE DEC 11 2012 ...COLDER STORM SYSTEM TO BRING SNOW TO PORTIONS OF NORTHEAST CALIFORNIA... .LOW PRESSURE OFF THE NORTHWEST US COAST WILL MOVE QUICKLY SOUTHEAST ACROSS NORTHERN CALIFORNIA LATE TONIGHT THROUGH WEDNESDAY. THIS STORM WILL BRING MUCH COLDER AIR WITH PERIODS OF SNOW TO THE SIERRA AND THE LAKE TAHOE BASIN. THE HEAVIEST SNOW IS EXPECTED WEDNESDAY MORNING...WITH ADDITIONAL BANDS OF SNOW CONTINUING INTO WEDNESDAY EVENING. CAZ071-121200- /O.EXB.KREV.WW.Y.0021.121212T0600Z-121213T0000Z/ LASSEN-EASTERN PLUMAS-EASTERN SIERRA COUNTIES- INCLUDING THE CITIES OF...PORTOLA...SUSANVILLE 245 PM PST TUE DEC 11 2012 ...WINTER WEATHER ADVISORY IN EFFECT FROM 10 PM THIS EVENING TO 4 PM PST WEDNESDAY... THE NATIONAL WEATHER SERVICE IN RENO HAS ISSUED A WINTER WEATHER ADVISORY FOR SNOW...WHICH IS IN EFFECT FROM 10 PM THIS EVENING TO 4 PM PST WEDNESDAY. * TIMING: SNOW WILL INCREASE LATE TONIGHT AND CONTINUE THROUGH WEDNESDAY MORNING. ADDITIONAL BANDS OF SNOW ARE EXPECTED TO DEVELOP WEDNESDAY AFTERNOON. * SNOW ACCUMULATIONS: 3 TO 6 INCHES WEST OF HIGHWAY 395...WITH LOCALLY UP TO 9 INCHES ABOVE 6000 FEET IN AREAS NEAR AND WEST OF HIGHWAY 89. LIGHTER AMOUNTS UP TO 2 INCHES EAST OF HIGHWAY 395. * WINDS: SOUTHWEST 10 TO 20 MPH WITH GUSTS TO 30 MPH TONIGHT... DECREASING TO 10 MPH OR LESS WEDNESDAY. * IMPACTS: THE HEAVIEST SNOW IS LIKELY TO OCCUR DURING THE EARLY MORNING HOURS WEDNESDAY...PRODUCING SNOWFALL RATES UP TO ONE INCH PER HOUR WITH POOR VISIBILITY. SLICK ROADS WITH CHAIN CONTROLS ARE EXPECTED THROUGH WEDNESDAY EVENING. PRECAUTIONARY/PREPAREDNESS ACTIONS... SNOW IS EXPECTED TO POSE AN INCONVENIENCE TO TRAVELERS. ROADS WILL BECOME SLICK AND HAZARDOUS...WITH SNOW AND ICE FIRST DEVELOPING ON BRIDGES AND OVERPASSES. MOTORISTS SHOULD SLOW DOWN AND USE CAUTION. CHECK OUR WEBSITE AT WEATHER.GOV/RENO OR LISTEN TO NOAA WEATHER RADIO FOR UPDATES ON THIS SITUATION. && $$ CAZ072-NVZ002-121200- /O.CON.KREV.WW.Y.0021.121212T0600Z-121213T0600Z/ GREATER LAKE TAHOE AREA- INCLUDING THE CITIES OF...SOUTH LAKE TAHOE...TRUCKEE... INCLINE VILLAGE 245 PM PST TUE DEC 11 2012 ...WINTER WEATHER ADVISORY REMAINS IN EFFECT FROM 10 PM THIS EVENING TO 10 PM PST WEDNESDAY... A WINTER WEATHER ADVISORY FOR SNOW REMAINS IN EFFECT FROM 10 PM THIS EVENING TO 10 PM PST WEDNESDAY. * TIMING: SNOW WILL INCREASE LATE TONIGHT AND CONTINUE THROUGH WEDNESDAY MORNING. ADDITIONAL BANDS OF SNOW ARE EXPECTED TO DEVELOP ACROSS PORTIONS OF THE TAHOE BASIN WEDNESDAY AFTERNOON AND EVENING. * SNOW ACCUMULATIONS: 4 TO 8 INCHES...WITH LOCALLY UP TO 12 INCHES ABOVE 7000 FEET AND IN AREAS WEST OF HIGHWAY 89. * WINDS: SOUTHWEST 15 TO 25 MPH WITH GUSTS TO 40 MPH TONIGHT... DECREASING TO 10 TO 20 MPH WITH GUSTS UP TO 30 MPH ON WEDNESDAY. RIDGE GUSTS UP TO 85 MPH. * IMPACTS: THE HEAVIEST SNOW IS LIKELY TO OCCUR DURING THE WEDNESDAY MORNING COMMUTE...PRODUCING SNOWFALL RATES UP TO ONE INCH PER HOUR WITH POOR VISIBILITY. SLICK ROADS WITH CHAIN CONTROLS ARE EXPECTED THROUGH WEDNESDAY EVENING. PRECAUTIONARY/PREPAREDNESS ACTIONS... SNOW IS EXPECTED TO POSE AN INCONVENIENCE TO TRAVELERS. ROADS WILL BECOME SLICK AND HAZARDOUS...WITH SNOW AND ICE FIRST DEVELOPING ON BRIDGES AND OVERPASSES. MOTORISTS SHOULD SLOW DOWN AND USE CAUTION. CHECK OUR WEBSITE AT WEATHER.GOV/RENO OR LISTEN TO NOAA WEATHER RADIO FOR UPDATES ON THIS SITUATION. && $$ HTTP://WEATHER.GOV/RENO
698 WWUS45 KREV 120256 WSWREV URGENT - WINTER WEATHER MESSAGE NATIONAL WEATHER SERVICE RENO NV 656 PM PST TUE DEC 11 2012 ...COLDER STORM SYSTEM TO BRING SNOW TO PORTIONS OF NORTHEAST CALIFORNIA... .LOW PRESSURE OFF THE PACIFIC NORTHWEST COAST WILL MOVE QUICKLY SOUTHEAST ACROSS NORTHERN CALIFORNIA LATE TONIGHT THROUGH WEDNESDAY. THIS STORM WILL BRING MUCH COLDER AIR WITH PERIODS OF SNOW TO THE SIERRA AND THE LAKE TAHOE BASIN. THE HEAVIEST SNOW IS EXPECTED WEDNESDAY MORNING...WITH ADDITIONAL BANDS OF SNOW CONTINUING INTO WEDNESDAY EVENING. CAZ072-NVZ002-121200- /O.CON.KREV.WW.Y.0021.121212T0600Z-121213T0600Z/ GREATER LAKE TAHOE AREA- INCLUDING THE CITIES OF...SOUTH LAKE TAHOE...TRUCKEE... INCLINE VILLAGE 656 PM PST TUE DEC 11 2012 ...WINTER WEATHER ADVISORY REMAINS IN EFFECT FROM 10 PM THIS EVENING TO 10 PM PST WEDNESDAY... A WINTER WEATHER ADVISORY FOR SNOW REMAINS IN EFFECT FROM 10 PM THIS EVENING TO 10 PM PST WEDNESDAY. * TIMING: SNOW WILL INCREASE LATE TONIGHT AND CONTINUE THROUGH WEDNESDAY MORNING. ADDITIONAL BANDS OF SNOW MAY DEVELOP ACROSS THE TAHOE BASIN WEDNESDAY AFTERNOON AND EVENING. * SNOW ACCUMULATIONS: 4 TO 8 INCHES...WITH LOCALLY UP TO 12 INCHES ABOVE 7000 FEET AND IN AREAS WEST OF HIGHWAY 89. * WINDS: SOUTHWEST 15 TO 25 MPH WITH GUSTS TO 45 MPH TONIGHT THEN DECREASING TO 10 TO 15 MPH ON WEDNESDAY. * SIERRA RIDGE GUSTS UP TO 90 MPH TONIGHT. * IMPACTS: THE HEAVIEST SNOW WILL OCCUR DURING THE WEDNESDAY MORNING COMMUTE...PRODUCING SNOWFALL RATES UP TO ONE INCH PER HOUR WITH POOR VISIBILITY. BE PREPARED FOR SLICK ROADS WITH CHAIN CONTROLS THROUGH WEDNESDAY EVENING. PRECAUTIONARY/PREPAREDNESS ACTIONS... SNOW WILL POSE AN INCONVENIENCE TO TRAVELERS. ROADS WILL BECOME SLICK AND HAZARDOUS...WITH SNOW AND ICE FIRST DEVELOPING ON BRIDGES AND OVERPASSES. MOTORISTS SHOULD SLOW DOWN AND USE CAUTION. && $$ CAZ071-121200- /O.CON.KREV.WW.Y.0021.121212T0600Z-121213T0000Z/ LASSEN-EASTERN PLUMAS-EASTERN SIERRA COUNTIES- INCLUDING THE CITIES OF...PORTOLA...SUSANVILLE 656 PM PST TUE DEC 11 2012 ...WINTER WEATHER ADVISORY REMAINS IN EFFECT FROM 10 PM THIS EVENING TO 4 PM PST WEDNESDAY... A WINTER WEATHER ADVISORY FOR SNOW REMAINS IN EFFECT FROM 10 PM THIS EVENING TO 4 PM PST WEDNESDAY. * TIMING: SNOW WILL INCREASE LATE TONIGHT AND CONTINUE THROUGH WEDNESDAY MORNING. ADDITIONAL BANDS OF SNOW WILL DEVELOP WEDNESDAY AFTERNOON. * SNOW ACCUMULATIONS: 3 TO 6 INCHES WEST OF HIGHWAY 395...WITH LOCALLY UP TO 9 INCHES ABOVE 6000 FEET IN AREAS NEAR AND WEST OF HIGHWAY 89. AMOUNTS UP TO 2 INCHES EAST OF HIGHWAY 395. * WINDS: SOUTHWEST 10 TO 20 MPH WITH GUSTS TO 45 MPH TONIGHT THEN DECREASING TO 10 MPH OR LESS WEDNESDAY. * IMPACTS: THE HEAVIEST SNOW WILL OCCUR EARLY WEDNESDAY MORNING...PRODUCING SNOWFALL RATES UP TO ONE INCH PER HOUR WITH POOR VISIBILITY. SLICK ROADS WITH CHAIN CONTROLS ARE EXPECTED THROUGH WEDNESDAY EVENING. PRECAUTIONARY/PREPAREDNESS ACTIONS... SNOW IS EXPECTED TO POSE AN INCONVENIENCE TO TRAVELERS. ROADS WILL BECOME SLICK AND HAZARDOUS...WITH SNOW AND ICE FIRST DEVELOPING ON BRIDGES AND OVERPASSES. MOTORISTS SHOULD SLOW DOWN AND USE CAUTION. CHECK OUR WEBSITE AT WEATHER.GOV/RENO OR LISTEN TO NOAA WEATHER RADIO FOR UPDATES ON THIS SITUATION. && $$ HTTP://WEATHER.GOV/RENO
330 WWUS45 KREV 121153 WSWREV URGENT - WINTER WEATHER MESSAGE NATIONAL WEATHER SERVICE RENO NV 353 AM PST WED DEC 12 2012 ...STORM SYSTEM TO BRING ADDITIONAL ACCUMULATIONS TODAY... .LOW PRESSURE OFF THE CALIFORNIA COAST WILL MOVE THROUGH THE AREA TODAY. THIS STORM WILL BRING MUCH COLDER AIR WITH PERIODS OF SNOW TO THE SIERRA AND THE LAKE TAHOE BASIN. ALTHOUGH THE HEAVIEST SNOW HAS ALREADY PASSED...ADDITIONAL BANDS OF SNOW WILL CONTINUE INTO THIS EVENING. CAZ072-NVZ002-130000- /O.CON.KREV.WW.Y.0021.000000T0000Z-121213T0600Z/ GREATER LAKE TAHOE AREA- INCLUDING THE CITIES OF...SOUTH LAKE TAHOE...TRUCKEE... INCLINE VILLAGE 353 AM PST WED DEC 12 2012 ...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 10 PM PST THIS EVENING... A WINTER WEATHER ADVISORY FOR SNOW REMAINS IN EFFECT UNTIL 10 PM PST THIS EVENING. * TIMING: EVEN THOUGH THE HEAVIEST SNOW HAS PASSED... ADDITIONAL BANDS OF SNOW MAY DEVELOP ACROSS THE TAHOE BASIN THROUGH THIS EVENING. * ADDITIONAL SNOW ACCUMULATIONS: 1 TO 4 INCHES...WITH LOCALLY UP TO 6 INCHES ABOVE 7000 FEET AND IN AREAS WEST OF HIGHWAY 89. * WINDS: SOUTHWEST 10 TO 15 MPH WITH GUSTS TO 30 MPH. * SIERRA RIDGE GUSTS UP TO 60 MPH. * IMPACTS: BE PREPARED FOR SLICK ROADS WITH CHAIN CONTROLS THROUGH WEDNESDAY EVENING. PRECAUTIONARY/PREPAREDNESS ACTIONS... SNOW WILL POSE AN INCONVENIENCE TO TRAVELERS. ROADS WILL BECOME SLICK AND HAZARDOUS...WITH SNOW AND ICE FIRST DEVELOPING ON BRIDGES AND OVERPASSES. MOTORISTS SHOULD SLOW DOWN AND USE CAUTION. && $$ CAZ071-130000- /O.CON.KREV.WW.Y.0021.000000T0000Z-121213T0000Z/ LASSEN-EASTERN PLUMAS-EASTERN SIERRA COUNTIES- INCLUDING THE CITIES OF...PORTOLA...SUSANVILLE 353 AM PST WED DEC 12 2012 ...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 4 PM PST THIS AFTERNOON... A WINTER WEATHER ADVISORY FOR SNOW REMAINS IN EFFECT UNTIL 4 PM PST THIS AFTERNOON. * TIMING: EVEN THOUGH THE HEAVIEST SNOW HAS ALREADY PASSED... ADDITIONAL BANDS OF SNOW WILL DEVELOP THIS AFTERNOON. * ADDITIONAL SNOW ACCUMULATIONS: 1 TO 4 INCHES WITH THE HIGHEST AMOUNTS NORTHWEST OF SUSANVILLE. * IMPACTS: SLICK ROADS WITH CHAIN CONTROLS ARE EXPECTED THROUGH TODAY. PRECAUTIONARY/PREPAREDNESS ACTIONS... SNOW IS EXPECTED TO POSE AN INCONVENIENCE TO TRAVELERS. ROADS WILL BECOME SLICK AND HAZARDOUS...WITH SNOW AND ICE FIRST DEVELOPING ON BRIDGES AND OVERPASSES. MOTORISTS SHOULD SLOW DOWN AND USE CAUTION. CHECK OUR WEBSITE AT WEATHER.GOV/RENO OR LISTEN TO NOAA WEATHER RADIO FOR UPDATES ON THIS SITUATION. && $$ HOON HTTP://WEATHER.GOV/RENO
668 WWUS45 KREV 122212 WSWREV URGENT - WINTER WEATHER MESSAGE NATIONAL WEATHER SERVICE RENO NV 212 PM PST WED DEC 12 2012 CAZ071-122315- /O.CAN.KREV.WW.Y.0021.000000T0000Z-121213T0000Z/ LASSEN-EASTERN PLUMAS-EASTERN SIERRA COUNTIES- INCLUDING THE CITIES OF...PORTOLA...SUSANVILLE 212 PM PST WED DEC 12 2012 ...WINTER WEATHER ADVISORY IS CANCELLED... THE NATIONAL WEATHER SERVICE IN RENO HAS CANCELLED THE WINTER WEATHER ADVISORY. SNOW SHOWERS HAVE BECOME SCATTERED ACROSS WESTERN LASSEN AND EASTERN PLUMAS COUNTIES THIS AFTERNOON. ONLY LOCALIZED LIGHT ACCUMULATIONS OF UP TO 1 INCH ARE EXPECTED INTO THIS EVENING SO THE WINTER WEATHER ADVISORY IS CANCELED. $$ CAZ072-NVZ002-122315- /O.CAN.KREV.WW.Y.0021.000000T0000Z-121213T0600Z/ GREATER LAKE TAHOE AREA- INCLUDING THE CITIES OF...SOUTH LAKE TAHOE...TRUCKEE... INCLINE VILLAGE 212 PM PST WED DEC 12 2012 ...WINTER WEATHER ADVISORY IS CANCELLED... THE NATIONAL WEATHER SERVICE IN RENO HAS CANCELLED THE WINTER WEATHER ADVISORY. SNOW SHOWERS HAVE BECOME SCATTERED ACROSS THE TAHOE BASIN THIS AFTERNOON. ONLY LOCALIZED ACCUMULATIONS OF UP TO 2 INCHES ARE EXPECTED INTO THIS EVENING SO THE WINTER WEATHER ADVISORY IS CANCELED. $$ HTTP://WEATHER.GOV/RENO
Nearby
Winter Weather Advisories in California, 2012Winter Weather Advisories in Nevada, 2012Every winter weather advisory in 2012
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.