Alert archive / California / Winter Storm Warnings in 2011
Winter Storm Warning 9, NWS Sacramento, CA
NWS Sacramento, CA issued this winter storm warning at Oct 3, 2011, 2:44 PM PDT. It took effect at Oct 4, 2011, 11:00 PM PDT. It was in force for 23 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
- Oct 3, 2011, 2:44 PM PDT (21:44 UTC)
- In effect from
- Oct 4, 2011, 11:00 PM PDT
- Expired
- Oct 5, 2011, 9:46 PM PDT
- In force
- 23 hr
- Issued by
- NWS Sacramento, CA
The text
As transmitted, in the capitals the NWS used until 2016.
978 WWUS46 KSTO 032144 WSWSTO URGENT - WINTER WEATHER MESSAGE NATIONAL WEATHER SERVICE SACRAMENTO CA 244 PM PDT MON OCT 3 2011 ...WINTER WEATHER TO IMPACT PASSES ABOVE 6000 FEET WEDNESDAY... .AN EARLY SEASON COLD FRONT WILL SPREAD HEAVY SNOW AND GUSTY WINDS OVER THE HIGHER MOUNTAIN PASSES FROM EARLY WEDNESDAY MORNING THROUGH LATE WEDNESDAY NIGHT. SCATTERED RAIN AND SNOW SHOWERS DURING THE DAY TUESDAY WILL BECOME HEAVY AT TIMES LATE TUESDAY NIGHT AND EARLY WEDNESDAY MORNING. SNOW LEVELS INITIALLY ABOVE 7500 FEET WILL DROP BELOW YUBA PASS...DONNER SUMMIT AND ECHO SUMMIT BY WEDNESDAY MORNING. PERIODS OF HEAVY SNOWFALL WITH REDUCED VISIBILITY IN WIND GUSTS UP TO 50 MPH ARE EXPECTED ABOVE 6000 FEET WEDNESDAY. SNOWFALL RATES WILL DIMINISH BY WEDNESDAY AFTERNOON...HOWEVER HAZARDOUS WINTER-LIKE TRAVELING CONDITIONS ARE LIKELY TO PERSIST UNTIL LATE WEDNESDAY NIGHT. PARTIAL CLEARING IS EXPECTED OVERNIGHT WEDNESDAY NIGHT. CAZ068-041100- /O.UPG.KSTO.WS.A.0010.111005T0600Z-111006T0600Z/ /O.NEW.KSTO.WS.W.0009.111005T1200Z-111006T0600Z/ WESTERN PLUMAS COUNTY/LASSEN PARK- 244 PM PDT MON OCT 3 2011 ...WINTER STORM WARNING IN EFFECT FROM 5 AM TO 11 PM PDT WEDNESDAY ABOVE 6000 FEET... ...WINTER STORM WATCH NO LONGER IN EFFECT... THE NATIONAL WEATHER SERVICE IN SACRAMENTO HAS ISSUED A WINTER STORM WARNING ABOVE 6000 FEET FOR HEAVY SNOW AND BLOWING SNOW ...WHICH IS IN EFFECT FROM 5 AM TO 11 PM PDT WEDNESDAY. THE WINTER STORM WATCH IS NO LONGER IN EFFECT. * SNOW ACCUMULATIONS: UP TO A FOOT ABOVE 7000 FEET...WITH 3 TO 6 INCHES ABOVE 6000 FEET BY WEDNESDAY EVENING. * ELEVATION:SNOW LEVELS NEAR 7500 FEET TUESDAY WILL LOWER TO 6000 FEET WEDNESDAY MORNING. LOCALLY LOWER SNOW LEVELS ARE POSSIBLE IN HEAVIER SNOW SHOWERS WEDNESDAY AFTERNOON. * TIMING...SCATTERED RAIN AND SNOW SHOWERS TUESDAY WILL INCREASE IN COVERAGE TUESDAY EVENING AND BECOME HEAVY AT TIMES BY EARLY WEDNESDAY MORNING. PERIODS OF HEAVY SNOW AND REDUCED VISIBILITY IN GUSTY WINDS ARE LIKELY WEDNESDAY MORNING AND AFTERNOON. SNOW WILL TAPER OFF TO SCATTERED SNOW SHOWERS LATE WEDNESDAY EVENING. * LOCATIONS INCLUDE: YUBA PASS...LASSEN PARK. * WINDS: SOUTH WINDS OF 15 TO 30 MPH ARE LIKELY WEDNESDAY. SOUTHWEST WIND GUSTS UP TO 50 MPH MAY OCCUR OVER THE PASSES AND RIDGES. * IMPACTS: HAZARDOUS TRAVELING CONDITIONS IN HEAVY SNOW. VISIBILITY UNDER ONE-QUARTER MILE IN BLOWING SNOW. ICY ROADS. CHAIN CONTROLS AND TRAVEL DELAYS ARE LIKELY. DANGEROUS BACK COUNTRY CONDITIONS AND COLD TEMPERATURES FOR HIKERS AND CAMPERS. PRECAUTIONARY/PREPAREDNESS ACTIONS... A WINTER STORM WARNING FOR HEAVY SNOW MEANS SEVERE WINTER WEATHER CONDITIONS ARE EXPECTED OR OCCURRING. SIGNIFICANT AMOUNTS OF SNOW ARE FORECAST THAT WILL MAKE TRAVEL DANGEROUS. ONLY TRAVEL IN AN EMERGENCY. IF YOU MUST TRAVEL...KEEP AN EXTRA FLASHLIGHT... FOOD...AND WATER IN YOUR VEHICLE IN CASE OF AN EMERGENCY. && $$ CAZ069-041100- /O.UPG.KSTO.WS.A.0010.111005T0600Z-111006T0600Z/ /O.NEW.KSTO.WS.W.0009.111005T1200Z-111006T0600Z/ WEST SLOPE NORTHERN SIERRA NEVADA- 244 PM PDT MON OCT 3 2011 ...WINTER STORM WARNING IN EFFECT FROM 5 AM TO 11 PM PDT WEDNESDAY ABOVE 6000 FEET... ...WINTER STORM WATCH NO LONGER IN EFFECT... THE NATIONAL WEATHER SERVICE IN SACRAMENTO HAS ISSUED A WINTER STORM WARNING ABOVE 6000 FEET FOR HEAVY SNOW AND BLOWING SNOW...WHICH IS IN EFFECT FROM 5 AM TO 11 PM PDT WEDNESDAY. THE WINTER STORM WATCH IS NO LONGER IN EFFECT. * SNOW ACCUMULATIONS: UP TO A FOOT ABOVE 7000 FEET...WITH 3 TO 6 INCHES ABOVE 6000 FEET BY WEDNESDAY EVENING. * ELEVATION:SNOW LEVELS INITIALLY ABOVE 7500 FEET TUESDAY WILL DROP TO 6000 FEET WEDNESDAY MORNING. LOCALLY LOWER SNOW LEVELS ARE POSSIBLE IN HEAVIER SNOW SHOWERS WEDNESDAY AFTERNOON. * TIMING:SCATTERED RAIN AND SNOW SHOWERS TUESDAY WILL INCREASE IN COVERAGE TUESDAY EVENING AND BECOME HEAVY AT TIMES BY EARLY WEDNESDAY MORNING. PERIODS OF HEAVY SNOW AND REDUCED VISIBILITY IN GUSTY WINDS ARE LIKELY WEDNESDAY MORNING AND AFTERNOON. SNOW WILL TAPER OFF TO SCATTERED SNOW SHOWERS LATE WEDNESDAY EVENING. * LOCATIONS INCLUDE: INTERSTATE 80 ABOVE KINGVALE. HIGHWAY 50 ABOVE STRAWBERRY. EBBETS PASS ALONG HIGHWAY 4 AND CARSON PASS ALONG HIGHWAY 88. SONORA PASS. * WINDS: SOUTH WINDS OF 15 TO 30 MPH ARE LIKELY WEDNESDAY. SOUTHWEST WIND GUSTS UP TO 50 MPH MAY OCCUR OVER THE PASSES AND RIDGES. * IMPACTS: HAZARDOUS TRAVELING CONDITIONS IN HEAVY SNOW. VISIBILITY UNDER ONE-QUARTER MILE IN BLOWING SNOW. ICY ROADS. CHAIN CONTROLS AND TRAVEL DELAYS ARE LIKELY. DANGEROUS BACK COUNTRY CONDITIONS AND COLD TEMPERATURES FOR HIKERS AND CAMPERS. PRECAUTIONARY/PREPAREDNESS ACTIONS... A WINTER STORM WARNING FOR HEAVY SNOW MEANS SEVERE WINTER WEATHER CONDITIONS ARE EXPECTED OR OCCURRING. SIGNIFICANT AMOUNTS OF SNOW ARE FORECAST THAT WILL MAKE TRAVEL DANGEROUS. ONLY TRAVEL IN AN EMERGENCY. IF YOU MUST TRAVEL...KEEP AN EXTRA FLASHLIGHT... FOOD...AND WATER IN YOUR VEHICLE IN CASE OF AN EMERGENCY. && $$
6 follow-up statements
498 WWUS46 KSTO 041049 WSWSTO URGENT - WINTER WEATHER MESSAGE NATIONAL WEATHER SERVICE SACRAMENTO CA 349 AM PDT TUE OCT 4 2011 ...EARLY SEASON WINTER STORM TO IMPACT HIGHER ELEVATIONS... .A PACIFIC COLD FRONTAL SYSTEM MORE LIKE THAT SEEN IN EARLY DECEMBER THAN EARLY OCTOBER WILL SPREAD HEAVY SNOW AND GUSTY WINDS OVER THE HIGHER MOUNTAIN PASSES WEDNESDAY. SCATTERED LIGHT RAIN AND SNOW SHOWERS DURING THE DAY TODAY WILL BECOME HEAVY AT TIMES LATE TONIGHT OR EARLY WEDNESDAY MORNING. SNOW LEVELS INITIALLY ABOVE 7500 FEET WILL DROP BELOW DONNER SUMMIT ON INTERSTATE 80 AND ECHO SUMMIT ON U.S HIGHWAY 50 BY WEDNESDAY MORNING. PERIODS OF HEAVY SNOWFALL WITH REDUCED VISIBILITY IN WIND GUSTS UP TO 50 MPH ARE EXPECTED ABOVE 6000 FEET WEDNESDAY. SNOWFALL RATES WILL DIMINISH BY WEDNESDAY AFTERNOON...HOWEVER HAZARDOUS WINTER-LIKE TRAVELING CONDITIONS ARE LIKELY TO PERSIST UNTIL LATE WEDNESDAY EVENING. PARTIAL CLEARING IS EXPECTED BY THURSDAY MORNING. CAZ068-042330- /O.CON.KSTO.WS.W.0009.111005T1200Z-111006T0600Z/ WESTERN PLUMAS COUNTY/LASSEN PARK- 349 AM PDT TUE OCT 4 2011 ...WINTER STORM WARNING REMAINS IN EFFECT FROM 5 AM TO 11 PM PDT WEDNESDAY ABOVE 6000 FEET... A WINTER STORM WARNING ABOVE 6000 FEET REMAINS IN EFFECT FROM 5 AM TO 11 PM PDT WEDNESDAY FOR WESTERN PLUMAS COUNTY AND LASSEN PARK. * SNOW ACCUMULATIONS: A FOOT OR MORE ABOVE 7000 FEET...WITH 3 TO 6 INCHES ABOVE 6000 FEET BY WEDNESDAY EVENING. * ELEVATION:SNOW LEVELS NEAR 7500 FEET TUESDAY WILL LOWER TO 6000 FEET WEDNESDAY MORNING. LOCALLY LOWER SNOW LEVELS ARE POSSIBLE IN HEAVIER SNOW SHOWERS WEDNESDAY AFTERNOON. LIGHTER SNOW DOWN TO 5000 FEET WILL BE POSSIBLE WEDNESDAY EVENING AND NIGHT. * TIMING...SCATTERED RAIN AND SNOW SHOWERS TODAY WILL INCREASE IN COVERAGE THIS EVENING AND BECOME HEAVY AT TIMES BY EARLY WEDNESDAY MORNING. PERIODS OF HEAVY SNOW AND REDUCED VISIBILITY IN GUSTY WINDS ARE LIKELY WEDNESDAY MORNING AND AFTERNOON. SNOW WILL TAPER OFF TO SCATTERED SNOW SHOWERS LATE WEDNESDAY NIGHT. * LOCATIONS INCLUDE: LASSEN PARK AND ELEVATIONS ABOVE 6000 FEET. * WINDS: SOUTH WINDS OF 15 TO 30 MPH ARE LIKELY WEDNESDAY. SOUTHWEST WIND GUSTS UP TO 50 MPH MAY OCCUR OVER THE PASSES AND RIDGES. * IMPACTS: HAZARDOUS TRAVELING CONDITIONS IN HEAVY SNOW. VISIBILITY UNDER ONE-QUARTER MILE IN BLOWING SNOW. ICY ROADS. CHAIN CONTROLS AND TRAVEL DELAYS ARE LIKELY. DANGEROUS BACK COUNTRY CONDITIONS AND COLD TEMPERATURES FOR HIKERS AND CAMPERS. PRECAUTIONARY/PREPAREDNESS ACTIONS... A WINTER STORM WARNING FOR HEAVY SNOW MEANS SEVERE WINTER WEATHER CONDITIONS ARE EXPECTED OR OCCURRING. SIGNIFICANT AMOUNTS OF SNOW ARE FORECAST THAT WILL MAKE TRAVEL DANGEROUS. ONLY TRAVEL IN AN EMERGENCY. IF YOU MUST TRAVEL...KEEP AN EXTRA FLASHLIGHT... FOOD...AND WATER IN YOUR VEHICLE IN CASE OF AN EMERGENCY. && $$ CAZ069-042330- /O.CON.KSTO.WS.W.0009.111005T1200Z-111006T0600Z/ WEST SLOPE NORTHERN SIERRA NEVADA- 349 AM PDT TUE OCT 4 2011 ...WINTER STORM WARNING REMAINS IN EFFECT FROM 5 AM TO 11 PM PDT WEDNESDAY ABOVE 6000 FEET... A WINTER STORM WARNING ABOVE 6000 FEET REMAINS IN EFFECT FROM 5 AM TO 11 PM PDT WEDNESDAY FOR THE WEST SLOPE OF THE NORTHERN SIERRA NEVADA. * SNOW ACCUMULATIONS: UP TO A FOOT ABOVE 7000 FEET...WITH 3 TO 6 INCHES ABOVE 6000 FEET BY WEDNESDAY EVENING. * ELEVATION:SNOW LEVELS INITIALLY ABOVE 7500 FEET TODAY WILL DROP TO 6000 FEET WEDNESDAY MORNING. LOCALLY LOWER SNOW LEVELS ARE POSSIBLE IN HEAVIER SNOW SHOWERS WEDNESDAY AFTERNOON. LIGHTER SNOWFALL DOWN TO 5500 FEET WILL BE POSSIBLE LATE WEDNESDAY NIGHT. * TIMING:SCATTERED RAIN AND SNOW SHOWERS TODAY WILL INCREASE IN COVERAGE THIS EVENING AND BECOME HEAVY AT TIMES BY EARLY WEDNESDAY MORNING. PERIODS OF HEAVY SNOW AND REDUCED VISIBILITY IN GUSTY WINDS ARE LIKELY WEDNESDAY MORNING AND AFTERNOON. SNOW WILL TAPER OFF TO SCATTERED SNOW SHOWERS LATE WEDNESDAY EVENING. * LOCATIONS INCLUDE: INTERSTATE 80 ABOVE KINGVALE. HIGHWAY 50 ABOVE STRAWBERRY. EBBETS PASS ALONG HIGHWAY 4 AND CARSON PASS ALONG HIGHWAY 88. SONORA PASS ON STATE ROUTE 108. * WINDS: SOUTH WINDS OF 15 TO 30 MPH ARE LIKELY WEDNESDAY. SOUTHWEST WIND GUSTS UP TO 50 MPH MAY OCCUR OVER THE PASSES AND RIDGES. * IMPACTS: HAZARDOUS TRAVELING CONDITIONS IN HEAVY SNOW. VISIBILITY UNDER ONE-QUARTER MILE IN BLOWING SNOW. ICY ROADS. CHAIN CONTROLS AND TRAVEL DELAYS ARE LIKELY. DANGEROUS BACK COUNTRY CONDITIONS AND COLD TEMPERATURES FOR HIKERS AND CAMPERS. PRECAUTIONARY/PREPAREDNESS ACTIONS... A WINTER STORM WARNING FOR HEAVY SNOW MEANS SEVERE WINTER WEATHER CONDITIONS ARE EXPECTED OR OCCURRING. SIGNIFICANT AMOUNTS OF SNOW ARE FORECAST THAT WILL MAKE TRAVEL DANGEROUS. ONLY TRAVEL IN AN EMERGENCY. IF YOU MUST TRAVEL...KEEP AN EXTRA FLASHLIGHT... FOOD...AND WATER IN YOUR VEHICLE IN CASE OF AN EMERGENCY. && $$
349 WWUS46 KSTO 042154 WSWSTO URGENT - WINTER WEATHER MESSAGE NATIONAL WEATHER SERVICE SACRAMENTO CA 254 PM PDT TUE OCT 4 2011 ...EARLY SEASON WINTER STORM TO IMPACT HIGHER ELEVATIONS... .RAIN AND HIGH ELEVATION SNOW WILL INCREASE THROUGH THE EVENING AND BECOME HEAVY AT TIMES LATER TONIGHT. SNOW LEVELS WILL DROP TO 6000 FEET BY WEDNESDAY MORNING...AND LOWER FURTHER TO 5000 FEET BY LATE AFTERNOON. SOUTHWEST WIND GUSTS UP TO 60 MPH WILL COMBINE WITH PERIODS OF HEAVY SNOW TO CREATE HAZARDOUS TRAVELING CONDITIONS OVER THE MOUNTAIN PASSES LATE TONIGHT AND WEDNESDAY. SNOW WILL TAPER OFF TO SCATTERED SNOW SHOWERS BY WEDNESDAY AFTERNOON. HAZARDOUS WINTER-LIKE TRAVELING CONDITIONS ARE LIKELY TO PERSIST UNTIL WEDNESDAY NIGHT. PARTIAL CLEARING IS EXPECTED BY THURSDAY MORNING. CAZ068-051100- /O.EXT.KSTO.WS.W.0009.111005T0600Z-111006T0600Z/ WESTERN PLUMAS COUNTY/LASSEN PARK- 254 PM PDT TUE OCT 4 2011 ...WINTER STORM WARNING NOW IN EFFECT FROM 11 PM THIS EVENING TO 11 PM PDT WEDNESDAY ABOVE 6000 FEET... THE WINTER STORM WARNING ABOVE 6000 FEET IS NOW IN EFFECT FROM 11 PM THIS EVENING TO 11 PM PDT WEDNESDAY. * SNOW ACCUMULATIONS: A FOOT OR MORE ABOVE 7000 FEET...WITH 4 TO 8 INCHES ABOVE 6000 FEET BY WEDNESDAY EVENING. A FEW INCHES OF SNOW MAY FALL DOWN TO 5000 FEET LATE WEDNESDAY AFTERNOON. * ELEVATION: ABOVE 6000 FEET. A FEW INCHES OF SNOW MAY FALL DOWN TO 5000 FEET LATE WEDNESDAY AFTERNOON. * TIMING...SCATTERED RAIN AND SNOW SHOWERS WILL BECOME WIDESPREAD THIS EVENING. SNOW WILL BECOME HEAVY AT TIMES LATE TONIGHT ABOVE 6000 FEET. SNOW WILL TAPER OFF TO SCATTERED SNOW SHOWERS WEDNESDAY AFTERNOON AS SNOW LEVELS LOWER TO 5000 FEET. LIGHT SNOW MAY CONTINUE INTO WEDNESDAY NIGHT BEFORE PARTIAL CLEARING DEVELOPS EARLY THURSDAY MORNING. * LOCATIONS INCLUDE: YUBA PASS...LASSEN PARK...AND ALL AREAS ABOVE 6000 FEET. * WINDS: SOUTH WINDS OF 15 TO 30 MPH TONIGHT AND EARLY WEDNESDAY. SOUTHWEST WIND GUSTS OF 60 MPH ARE POSSIBLE OVER RIDGES AND PASSES. * IMPACTS: HAZARDOUS TRAVELING CONDITIONS IN HEAVY SNOW. VISIBILITY UNDER ONE-QUARTER MILE IN BLOWING SNOW. ICY ROADS. CHAIN CONTROLS AND TRAVEL DELAYS ARE LIKELY. DANGEROUS BACK COUNTRY CONDITIONS AND COLD TEMPERATURES FOR HIKERS AND CAMPERS. PRECAUTIONARY/PREPAREDNESS ACTIONS... A WINTER STORM WARNING FOR HEAVY SNOW AND BLOWING SNOW MEANS SEVERE WINTER WEATHER CONDITIONS ARE EXPECTED OR OCCURRING. SIGNIFICANT AMOUNTS OF SNOW ARE FORECAST THAT WILL MAKE TRAVEL DANGEROUS. IF YOU MUST TRAVEL...KEEP AN EXTRA FLASHLIGHT... FOOD...AND WATER IN YOUR VEHICLE IN CASE OF AN EMERGENCY. && $$ CAZ069-051100- /O.EXT.KSTO.WS.W.0009.111005T0600Z-111006T0600Z/ WEST SLOPE NORTHERN SIERRA NEVADA- 254 PM PDT TUE OCT 4 2011 ...WINTER STORM WARNING NOW IN EFFECT FROM 11 PM THIS EVENING TO 11 PM PDT WEDNESDAY ABOVE 6000 FEET... THE WINTER STORM WARNING ABOVE 6000 FEET IS NOW IN EFFECT FROM 11 PM THIS EVENING TO 11 PM PDT WEDNESDAY. * SNOW ACCUMULATIONS: A FOOT OR MORE ABOVE 7000 FEET...WITH 4 TO 8 INCHES ABOVE 6000 FEET BY WEDNESDAY EVENING. A FEW INCHES OF SNOW MAY FALL DOWN TO 5000 FEET LATE WEDNESDAY AFTERNOON. * ELEVATION: ABOVE 6000 FEET. A FEW INCHES OF SNOW MAY FALL DOWN TO 5000 FEET LATE WEDNESDAY AFTERNOON. * TIMING:SCATTERED RAIN AND SNOW SHOWERS WILL BECOME WIDESPREAD THIS EVENING. SNOW WILL BECOME HEAVY AT TIMES LATE TONIGHT ABOVE 6000 FEET. SNOW WILL TAPER OFF TO SCATTERED SNOW SHOWERS WEDNESDAY AFTERNOON AS SNOW LEVELS LOWER TO 5000 FEET. LIGHT SNOW MAY CONTINUE INTO WEDNESDAY NIGHT BEFORE PARTIAL CLEARING DEVELOPS EARLY THURSDAY MORNING. * LOCATIONS INCLUDE: INTERSTATE 80 ABOVE KINGVALE. HIGHWAY 50 ABOVE STRAWBERRY. EBBETS PASS ALONG HIGHWAY 4 AND CARSON PASS ALONG HIGHWAY 88. SONORA PASS ON HIGHWAY 108. * WINDS: SOUTH WINDS OF 15 TO 30 MPH TONIGHT AND EARLY WEDNESDAY...WITH SOUTHWEST WIND GUSTS UP TO 60 MPH OVER RIDGES AND PASSES. * IMPACTS: HAZARDOUS TRAVELING CONDITIONS IN HEAVY SNOW. VISIBILITY UNDER ONE-QUARTER MILE IN BLOWING SNOW. ICY ROADS. CHAIN CONTROLS AND TRAVEL DELAYS ARE LIKELY. DANGEROUS BACK COUNTRY CONDITIONS AND COLD TEMPERATURES FOR HIKERS AND CAMPERS. PRECAUTIONARY/PREPAREDNESS ACTIONS... A WINTER STORM WARNING FOR HEAVY SNOW AND BLOWING SNOW MEANS SEVERE WINTER WEATHER CONDITIONS ARE EXPECTED OR OCCURRING. SIGNIFICANT AMOUNTS OF SNOW ARE FORECAST THAT WILL MAKE TRAVEL DANGEROUS. IF YOU MUST TRAVEL...KEEP AN EXTRA FLASHLIGHT... FOOD...AND WATER IN YOUR VEHICLE IN CASE OF AN EMERGENCY. && $$ SG/HSO
690 WWUS46 KSTO 051045 WSWSTO URGENT - WINTER WEATHER MESSAGE NATIONAL WEATHER SERVICE SACRAMENTO CA 345 AM PDT WED OCT 5 2011 ...EARLY SEASON WINTER STORM BRINGING HIGH ELEVATION SNOW AND GUSTY WINDS TO THE SIERRA CASCADE RANGE... .RAIN AND HIGH ELEVATION SNOW BEGAN FALLING OVERNIGHT AND WILL CONTINUE THROUGH THE MORNING HOURS. SNOW LEVELS THIS MORNING WILL RANGE FROM AROUND 6000 FEET IN THE LASSEN AREA TO AROUND 7000 FEET SOUTH OF U.S. 50. SNOW LEVELS WILL THEN LOWER THIS AFTERNOON TO AROUND 5000 TO 5500 FEET. SOUTHWEST WIND GUSTS UP TO 60 MPH WILL COMBINE WITH PERIODS OF HEAVY SNOW THIS MORNING TO CREATE HAZARDOUS TRAVELING CONDITIONS OVER THE MOUNTAIN PASSES. SNOW WILL TAPER OFF TO SCATTERED SNOW SHOWERS BY THIS AFTERNOON BUT SOME ADDITIONAL SNOWFALL ACCUMULATION IS POSSIBLE. HAZARDOUS WINTER- LIKE TRAVELING CONDITIONS ARE LIKELY TO PERSIST UNTIL THIS EVENING. PARTIAL CLEARING IS EXPECTED BY THURSDAY MORNING. CAZ068-060000- /O.CON.KSTO.WS.W.0009.000000T0000Z-111006T0600Z/ WESTERN PLUMAS COUNTY/LASSEN PARK- 345 AM PDT WED OCT 5 2011 ...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 11 PM PDT THIS EVENING ABOVE 6000 FEET... A WINTER STORM WARNING ABOVE 6000 FEET REMAINS IN EFFECT UNTIL 11 PM PDT THIS EVENING FOR WESTERN PLUMAS COUNTY AND LASSEN PARK. * SNOW ACCUMULATIONS: 4 TO 8 INCHES OF ADDITIONAL SNOW ABOVE 6000 FEET BY THIS EVENING. A FEW INCHES OF SNOW MAY FALL DOWN TO 5000 FEET LATE THIS AFTERNOON. * ELEVATION: ABOVE 6000 FEET. * TIMING...SNOW...HEAVY AT TIMES WILL CONTINUE THROUGH THE MORNING HOURS ABOVE 6000 FEET. SNOW WILL TAPER OFF TO SCATTERED SNOW SHOWERS THIS AFTERNOON AS SNOW LEVELS LOWER TO 5000 FEET. LIGHT SNOW MAY CONTINUE INTO TONIGHT BEFORE PARTIAL CLEARING DEVELOPS EARLY THURSDAY MORNING. * LOCATIONS INCLUDE: LASSEN PARK AND ALL AREAS ABOVE 6000 FEET. * WINDS: SOUTH WINDS OF 15 TO 30 MPH THIS MORNING WITH GUSTS TO 60 MPH ARE POSSIBLE OVER RIDGES AND PASSES. * IMPACTS: HAZARDOUS TRAVELING CONDITIONS IN HEAVY SNOW. VISIBILITY UNDER ONE-QUARTER MILE IN BLOWING SNOW. ICY ROADS. CHAIN CONTROLS AND TRAVEL DELAYS ARE LIKELY. DANGEROUS BACK COUNTRY CONDITIONS AND COLD TEMPERATURES FOR HIKERS AND CAMPERS. PRECAUTIONARY/PREPAREDNESS ACTIONS... A WINTER STORM WARNING FOR HEAVY SNOW AND BLOWING SNOW MEANS SEVERE WINTER WEATHER CONDITIONS ARE EXPECTED OR OCCURRING. SIGNIFICANT AMOUNTS OF SNOW ARE FORECAST THAT WILL MAKE TRAVEL DANGEROUS. IF YOU MUST TRAVEL...KEEP AN EXTRA FLASHLIGHT... FOOD...AND WATER IN YOUR VEHICLE IN CASE OF AN EMERGENCY. && $$ CAZ069-060000- /O.CON.KSTO.WS.W.0009.000000T0000Z-111006T0600Z/ WEST SLOPE NORTHERN SIERRA NEVADA- 345 AM PDT WED OCT 5 2011 ...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 11 PM PDT THIS EVENING ABOVE 6000 FEET... A WINTER STORM WARNING ABOVE 6000 FEET REMAINS IN EFFECT UNTIL 11 PM PDT THIS EVENING FOR THE WEST SLOPE OF THE NORTHERN SIERRA NEVADA. * SNOW ACCUMULATIONS: 4 TO 8 INCHES OF ADDITIONAL SNOW ABOVE 6000 FEET BY THIS EVENING. A FEW INCHES OF SNOW MAY FALL DOWN TO 5000 FEET LATE THIS AFTERNOON. * ELEVATION: ABOVE 6000 FEET. * TIMING: SNOW...HEAVY AT TIMES WILL CONTINUE THROUGH THE MORNING HOURS ABOVE 6000 TO 7000 FEET. SNOW WILL TAPER OFF TO SCATTERED SNOW SHOWERS THIS AFTERNOON AS SNOW LEVELS LOWER TO 5500 FEET. LIGHT SNOW MAY CONTINUE INTO TONIGHT BEFORE PARTIAL CLEARING DEVELOPS EARLY THURSDAY MORNING. * LOCATIONS INCLUDE: INTERSTATE 80 ABOVE KINGVALE. HIGHWAY 50 ABOVE STRAWBERRY. EBBETS PASS ALONG HIGHWAY 4 AND CARSON PASS ALONG HIGHWAY 88. SONORA PASS ON HIGHWAY 108. * WINDS: SOUTH WINDS OF 15 TO 30 MPH THIS MORNING WITH SOUTHWEST WIND GUSTS UP TO 60 MPH OVER RIDGES AND PASSES. * IMPACTS: HAZARDOUS TRAVELING CONDITIONS IN HEAVY SNOW. VISIBILITY UNDER ONE-QUARTER MILE IN BLOWING SNOW. ICY ROADS. CHAIN CONTROLS AND TRAVEL DELAYS ARE LIKELY. DANGEROUS BACK COUNTRY CONDITIONS AND COLD TEMPERATURES FOR HIKERS AND CAMPERS. PRECAUTIONARY/PREPAREDNESS ACTIONS... A WINTER STORM WARNING FOR HEAVY SNOW AND BLOWING SNOW MEANS SEVERE WINTER WEATHER CONDITIONS ARE EXPECTED OR OCCURRING. SIGNIFICANT AMOUNTS OF SNOW ARE FORECAST THAT WILL MAKE TRAVEL DANGEROUS. IF YOU MUST TRAVEL...KEEP AN EXTRA FLASHLIGHT... FOOD...AND WATER IN YOUR VEHICLE IN CASE OF AN EMERGENCY. && $$
416 WWUS46 KSTO 051604 WSWSTO URGENT - WINTER WEATHER MESSAGE NATIONAL WEATHER SERVICE SACRAMENTO CA 904 AM PDT WED OCT 5 2011 ...EARLY SEASON WINTER STORM BRINGING HIGH ELEVATION SNOW AND GUSTY WINDS TO THE SIERRA CASCADE RANGE... .NUMEROUS RAIN AND HIGH ELEVATION SNOW SHOWERS WILL CONTINUE THROUGH THE AFTERNOON HOURS WITH ADDITIONAL ACCUMULATIONS POSSIBLE. SOUTHWEST WIND GUSTS UP TO 50 MPH WILL COMBINE WITH PERIODS OF HEAVY SNOW TODAY TO CREATE HAZARDOUS TRAVELING CONDITIONS OVER THE MOUNTAIN PASSES.SNOW LEVELS WHICH ARE CURRENTLY NEAR 6000 FEET WILL LOWER THIS AFTERNOON TO AROUND 5000 TO 5500 FEET. HAZARDOUS WINTER-LIKE TRAVELING CONDITIONS ARE LIKELY TO PERSIST UNTIL THIS EVENING...WITH PARTIAL CLEARING EXPECTED BY THURSDAY MORNING. CAZ068-060015- /O.CON.KSTO.WS.W.0009.000000T0000Z-111006T0600Z/ WESTERN PLUMAS COUNTY/LASSEN PARK- INCLUDING THE CITIES OF...CHESTER...QUINCY 904 AM PDT WED OCT 5 2011 ...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 11 PM PDT THIS EVENING... * SNOW ACCUMULATIONS: 3 TO 6 INCHES OF ADDITIONAL SNOW ABOVE 6000 FEET BY THIS EVENING. A FEW INCHES OF SNOW MAY FALL DOWN TO 5000 FEET LATE THIS AFTERNOON. * ELEVATION: ABOVE 6000 FEET. A COUPLE INCHES OF SLUSHY SNOW MAY FALL DOWN TO 5000 FEET TODAY. * TIMING...SNOW SHOWERS...HEAVY AT TIMES WILL CONTINUE THROUGH THE DAY ABOVE 6000 FEET. SNOW WILL TAPER OFF TO SCATTERED SNOW SHOWERS THIS AFTERNOON AS SNOW LEVELS LOWER TO 5000 FEET. LIGHT SNOW MAY CONTINUE INTO TONIGHT BEFORE PARTIAL CLEARING DEVELOPS EARLY THURSDAY MORNING. * LOCATIONS INCLUDE: LASSEN PARK AND ALL AREAS ABOVE 6000 FEET. * WINDS: SOUTH WINDS OF 15 TO 30 MPH THIS MORNING WITH GUSTS TO 60 MPH ARE POSSIBLE OVER RIDGES AND PASSES. * IMPACTS: HAZARDOUS TRAVELING CONDITIONS IN HEAVY SNOW. VISIBILITY UNDER ONE-QUARTER MILE IN BLOWING SNOW. ICY ROADS. CHAIN CONTROLS AND TRAVEL DELAYS ARE LIKELY. DANGEROUS BACK COUNTRY CONDITIONS AND COLD TEMPERATURES FOR HIKERS AND CAMPERS. PRECAUTIONARY/PREPAREDNESS ACTIONS... A WINTER STORM WARNING FOR HEAVY SNOW AND BLOWING SNOW MEANS SEVERE WINTER WEATHER CONDITIONS ARE EXPECTED OR OCCURRING. SIGNIFICANT AMOUNTS OF SNOW ARE FORECAST THAT WILL MAKE TRAVEL DANGEROUS. IF YOU MUST TRAVEL...KEEP AN EXTRA FLASHLIGHT... FOOD...AND WATER IN YOUR VEHICLE IN CASE OF AN EMERGENCY. && $$ CAZ069-060015- /O.CON.KSTO.WS.W.0009.000000T0000Z-111006T0600Z/ WEST SLOPE NORTHERN SIERRA NEVADA- INCLUDING THE CITY OF...BLUE CANYON 904 AM PDT WED OCT 5 2011 ...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 11 PM PDT THIS EVENING... * SNOW ACCUMULATIONS: 3 TO 6 INCHES OF ADDITIONAL SNOW ABOVE 6000 FEET BY THIS EVENING. A FEW INCHES OF SNOW MAY FALL DOWN TO 5000 FEET LATE THIS AFTERNOON. * ELEVATION: ABOVE 6000 FEET. A COUPLE INCHES OF SLUSHY SNOW MAY FALL DOWN TO 5000 FEET TODAY. * TIMING...SNOW SHOWERS...HEAVY AT TIMES WILL CONTINUE THROUGH THE DAY ABOVE 6000 FEET. SNOW WILL TAPER OFF TO SCATTERED SNOW SHOWERS THIS AFTERNOON AS SNOW LEVELS LOWER TO 5000 FEET. LIGHT SNOW MAY CONTINUE INTO TONIGHT BEFORE PARTIAL CLEARING DEVELOPS EARLY THURSDAY MORNING. * LOCATIONS INCLUDE: INTERSTATE 80 ABOVE KINGVALE. HIGHWAY 50 ABOVE STRAWBERRY. EBBETS PASS ALONG HIGHWAY 4 AND CARSON PASS ALONG HIGHWAY 88. SONORA PASS ON HIGHWAY 108. * WINDS: SOUTH WINDS OF 15 TO 30 MPH THIS MORNING WITH SOUTHWEST WIND GUSTS UP TO 60 MPH OVER RIDGES AND PASSES. * IMPACTS: HAZARDOUS TRAVELING CONDITIONS IN HEAVY SNOW. VISIBILITY UNDER ONE-QUARTER MILE IN BLOWING SNOW. ICY ROADS. CHAIN CONTROLS AND TRAVEL DELAYS ARE LIKELY. DANGEROUS BACK COUNTRY CONDITIONS AND COLD TEMPERATURES FOR HIKERS AND CAMPERS. PRECAUTIONARY/PREPAREDNESS ACTIONS... A WINTER STORM WARNING FOR HEAVY SNOW AND BLOWING SNOW MEANS SEVERE WINTER WEATHER CONDITIONS ARE EXPECTED OR OCCURRING. SIGNIFICANT AMOUNTS OF SNOW ARE FORECAST THAT WILL MAKE TRAVEL DANGEROUS. IF YOU MUST TRAVEL...KEEP AN EXTRA FLASHLIGHT... FOOD...AND WATER IN YOUR VEHICLE IN CASE OF AN EMERGENCY. && $$
280 WWUS46 KSTO 052208 WSWSTO URGENT - WINTER WEATHER MESSAGE NATIONAL WEATHER SERVICE SACRAMENTO CA 308 PM PDT WED OCT 5 2011 ...EARLY SEASON WINTER STORM BRINGING HIGH ELEVATION SNOW AND GUSTY WINDS TO THE SIERRA CASCADE RANGE... .NUMEROUS RAIN AND HIGH ELEVATION SNOW SHOWERS WILL CONTINUE THROUGH THE EVENING HOURS WITH ADDITIONAL ACCUMULATIONS POSSIBLE. SOUTHWEST WIND GUSTS UP TO 50 MPH WILL COMBINE WITH PERIODS OF HEAVY SNOW TODAY TO CREATE HAZARDOUS TRAVELING CONDITIONS OVER THE MOUNTAIN PASSES. SNOW LEVELS WHICH ARE CURRENTLY NEAR 6000 FEET WILL CONTINUE TO LOWER TO AROUND 5000 FEET OR LOWER OVERNIGHT. HAZARDOUS WINTER-LIKE TRAVELING CONDITIONS ARE LIKELY TO PERSIST THROUGH THIS EVENING...WITH PARTIAL CLEARING EXPECTED BY THURSDAY MORNING. CAZ068-060600- /O.CON.KSTO.WS.W.0009.000000T0000Z-111006T0600Z/ WESTERN PLUMAS COUNTY/LASSEN PARK- 308 PM PDT WED OCT 5 2011 ...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 11 PM PDT THIS EVENING ABOVE 6000 FEET... A WINTER STORM WARNING ABOVE 6000 FEET REMAINS IN EFFECT UNTIL 11 PM PDT THIS EVENING. * ELEVATION: ABOVE 6000 FEET. A COUPLE INCHES OF SLUSHY SNOW MAY FALL DOWN TO 5000 FEET THROUGH TONIGHT. * TIMING...SNOW SHOWERS...HEAVY AT TIMES WILL CONTINUE THROUGH THE EVENING ABOVE 6000 FEET. LIGHT SNOW MAY CONTINUE INTO TONIGHT BEFORE PARTIAL CLEARING DEVELOPS EARLY THURSDAY MORNING. * LOCATIONS INCLUDE: LASSEN PARK AND ALL AREAS ABOVE 6000 FEET. * WINDS: SOUTH WINDS OF 15 TO 30 MPH ARE POSSIBLE OVER RIDGES AND PASSES. * IMPACTS: HAZARDOUS TRAVELING CONDITIONS IN HEAVY SNOW. VISIBILITY UNDER ONE-QUARTER MILE IN BLOWING SNOW. ICY ROADS. CHAIN CONTROLS AND TRAVEL DELAYS ARE LIKELY. DANGEROUS BACK COUNTRY CONDITIONS AND COLD TEMPERATURES FOR HIKERS AND CAMPERS. PRECAUTIONARY/PREPAREDNESS ACTIONS... A WINTER STORM WARNING FOR HEAVY SNOW AND BLOWING SNOW MEANS SEVERE WINTER WEATHER CONDITIONS ARE EXPECTED OR OCCURRING. SIGNIFICANT AMOUNTS OF SNOW ARE FORECAST THAT WILL MAKE TRAVEL DANGEROUS. IF YOU MUST TRAVEL...KEEP AN EXTRA FLASHLIGHT... FOOD...AND WATER IN YOUR VEHICLE IN CASE OF AN EMERGENCY. && $$ CAZ069-060600- /O.CON.KSTO.WS.W.0009.000000T0000Z-111006T0600Z/ WEST SLOPE NORTHERN SIERRA NEVADA- 308 PM PDT WED OCT 5 2011 ...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 11 PM PDT THIS EVENING ABOVE 6000 FEET... A WINTER STORM WARNING ABOVE 6000 FEET REMAINS IN EFFECT UNTIL 11 PM PDT THIS EVENING. * ELEVATION: ABOVE 6000 FEET. A COUPLE INCHES OF SLUSHY SNOW MAY FALL DOWN TO 5000 FEET TODAY. * TIMING...SNOW SHOWERS...HEAVY AT TIMES WILL CONTINUE THROUGH THE EVENING ABOVE 6000 FEET. LIGHT SNOW MAY CONTINUE INTO TONIGHT BEFORE PARTIAL CLEARING DEVELOPS EARLY THURSDAY MORNING. * LOCATIONS INCLUDE: INTERSTATE 80 ABOVE KINGVALE. HIGHWAY 50 ABOVE STRAWBERRY. EBBETS PASS ALONG HIGHWAY 4 AND CARSON PASS ALONG HIGHWAY 88. SONORA PASS ON HIGHWAY 108. * WINDS: SOUTH WINDS OF 15 TO 30 MPH ARE POSSIBLE OVER RIDGES AND PASSES. * IMPACTS: HAZARDOUS TRAVELING CONDITIONS IN HEAVY SNOW. VISIBILITY UNDER ONE-QUARTER MILE IN BLOWING SNOW. ICY ROADS. CHAIN CONTROLS AND TRAVEL DELAYS ARE LIKELY. DANGEROUS BACK COUNTRY CONDITIONS AND COLD TEMPERATURES FOR HIKERS AND CAMPERS. PRECAUTIONARY/PREPAREDNESS ACTIONS... A WINTER STORM WARNING FOR HEAVY SNOW AND BLOWING SNOW MEANS SEVERE WINTER WEATHER CONDITIONS ARE EXPECTED OR OCCURRING. SIGNIFICANT AMOUNTS OF SNOW ARE FORECAST THAT WILL MAKE TRAVEL DANGEROUS. IF YOU MUST TRAVEL...KEEP AN EXTRA FLASHLIGHT... FOOD...AND WATER IN YOUR VEHICLE IN CASE OF AN EMERGENCY. && $$
907 WWUS46 KSTO 060446 WSWSTO URGENT - WINTER WEATHER MESSAGE NATIONAL WEATHER SERVICE SACRAMENTO CA 946 PM PDT WED OCT 5 2011 CAZ068-069-060600- /O.CAN.KSTO.WS.W.0009.000000T0000Z-111006T0600Z/ WESTERN PLUMAS COUNTY/LASSEN PARK- WEST SLOPE NORTHERN SIERRA NEVADA- INCLUDING THE CITIES OF...CHESTER...QUINCY...BLUE CANYON 946 PM PDT WED OCT 5 2011 ...WINTER STORM WARNING IS CANCELLED... THE NATIONAL WEATHER SERVICE IN SACRAMENTO HAS CANCELLED THE WINTER STORM WARNING. SCATTERED LIGHT SNOW SHOWERS WILL CONTINUE OVERNIGHT BUT LITTLE TO NO ADDITIONAL ACCUMULATIONS EXPECTED. $$
What forecasters said that day
The local office's own words before this winter storm warning went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.
NWS Sacramento, CA wrote its last area forecast discussion before this winter storm warning went out at Oct 3, 8:54 AM PDT, 5 hours 50 minutes earlier.
Area forecast discussion, Oct 3, 8:54 AM PDT, 5 hours 50 minutes before
AREA FORECAST DISCUSSION NATIONAL WEATHER SERVICE SACRAMENTO CA 854 AM PDT MON OCT 3 2011 .SHORT TERM DISCUSSION... WV IMAGERY THIS MORNING DEPICTS A HIGH-AMPLITUDE TROUGH DIGGING OFFSHORE OF THE WEST COAST...STRETCHING FROM A CIRCULATION CENTER NEAR VANCOUVER ISLAND BC SOUTHWARD TO OFFSHORE FROM SANTA BARBARA CA. THE EASTWARD PROGRESSION OF THIS FEATURE HAS SLOWED IN THE LAST COUPLE OF HOURS AND IT APPEARS MORE ENERGY IS GOING TOWARDS DEEPENING THE TROUGH RATHER THAN PROGRESSING IT. AN AMPLE MOISTURE TAP IS ASSOCIATED WITH THE JET ROUNDING THE BASE OF THE TROUGH AS RECENT AMSU/SSMI BLENDED TOTAL PWAT SHOWS 1-1.5 INCHES OF LIQUID AVAILABLE AND MOVING ONSHORE NORTH OF THE BAY AREA. CLOSER TO THE SURFACE...AREA RADARS SHOW A WELL-DEFINED LEADING BAND OF MODERATE PRECIP ALONG A SW-NE LINE EXTENDING JUST EAST OF THE MENDOCINO MTNS WITH VERY LITTLE WEST-EAST PROPAGATION. THIS MATCHES WELL WITH LATEST HIGH-RES MODEL GUIDANCE WHICH HAS PRECIP HOLDING TO THE WESTERN PORTIONS OF THE FORECAST AREA UNTIL LATE IN THE DAY WHEN THE FRONT FINALLY PUSHES EASTWARD AND THE BAND MOVES ACROSS THE VALLEY AND INTO THE SIERRA. IN FACT...THE 06Z LOCAL WRF MODEL DOES NOT HAVE ANY RAIN OVER THE SAC METRO AREA UNTIL MIDNIGHT OR LATER...ALTHOUGH IT IS A LITTLE BEHIND WITH THE CURRENT LOCATION OF THE BAND. MINOR UPDATE TO THE FORECAST THIS MORNING TO FACTOR IN LATEST MODEL TIMING OF THE FRONT FOR POPS AND WX. OTHERWISE...PREVIOUS FORECAST LOOKS GOOD. SEE THE PREVIOUS DISCUSSION BELOW FOR AN EXCELLENT ANALYSIS OF THE SITUATION OVER THE NEXT FEW DAYS. -DVC .PREVIOUS DISCUSSION...ISSUED 435 AM PDT... SYSTEM #1 IS EXPECTED TO IMPACT NORCAL TODAY AND TONIGHT...WITH NORCAL IN BETWEEN WX SYSTEMS ON TUE...THEN STRONGER/WETTER SYSTEM #2 IMPACTS THE AREA TUE NITE...WED AND INTO THU. THE 145 KT JET DIGGING ON THE BACKSIDE OF THE ERN PAC TROF IS SHARPENING/DIGGING THE UPPER LEVEL TROF AND SLOWING THE EWD PROGRESSION OF THE FRONTAL BAND ALONG THE N COAST. THE BACKING FLOW E OF THE TROF AXIS IS PARALLELING THE FRONT...AND THE UPPER JET WON'T SHIFT EWD ENOUGH UNTIL THIS AFTERNOON AND TONITE TO PUSH THE FRONTAL BAND ONSHORE. THE LOCAL HIGH RESOLUTION WRF_NMM AND BUFKIT QPFS GENERALLY HAVE THE LEADING EDGE OF THE RAIN MOVING TO A LINE FROM REDDING TO STONEYFORD TO PETALUMA LINE BY AROUND 1 PM. THERE MAY BE ENOUGH OROGRAPHICS AND ISENTROPIC LIFTING PROCESSES TO SQUEEZE OUT SOME DROPS OVER THE NRN SIERNEV AHEAD OF THE FRONTAL BAND THIS AFTERNOON...BUT OTHERWISE THE FRONTAL PRECIP WILL HOLD OFF UNTIL THIS EVENING FOR THE SIERNEV AND SRN SAC VLY/NRN SAN JOAQUIN VALLEY ZONES. THE 03/06Z WRF BRINGS THE LEADING EDGE OF THE FRONTAL PRECIP TO A CHESTER TO SAC TO NEAR STOCKTON LINE BY AROUND MIDNIGHT. AS THE TROF SHARPENS...SATELLITE IMAGERY SHOWS SOME ENHANCEMENT ALONG THE FRONT. HOWEVER...THE SHARPENING TROF ALSO CAUSES THE ENERGY TO SPLIT AND WEAKENS THE FRONT AS IT MOVES FARTHER INLAND. THUS...THE SERN PORTION OF THE FORECAST AREA IS NOT LIKELY TO RECEIVE MUCH PRECIP...THAT BEING THE AREAS ROUGHLY SE OF HWY 50 IN THE SIERNEV...AND THE NRN SAN JOAQUIN. AFTER MIDNIGHT...PRECIP SHOULD WIND DOWN OVER AREAS W OF I-5. QPFS HAVE BEEN VARYING WIDELY FROM MODEL RUN TO MODEL RUN WITH THIS SYSTEM. THE FRONT IS TAPPING INTO A 1.25 TO 1.50 INCH PW PLUME...SO SOME 1 INCH PLUS QPFS ARE LIKELY ESPECIALLY IN THE OROGRAPHICALLY FAVORED AREAS. GENERALLY WE THINK THE NEARLY 1.0 INCH TOTAL FOR THE SAC AREA IS WAY TOO HIGH...AND WE ARE THINKING ABOUT .10 TO .25 INCH. THERE WILL BE ENOUGH SWLY FLOW AND OROGRAPHIC EFFECTS TO CONTINUE PRECIP INTO TUE OVER THE NRN SIERNEV ESPECIALLY N OF HWY 50...WITH ONLY SLIGHT CHANCE POPS ELSEWHERE AS OUR HIGH RESOLUTION QPF MODELS KEEP MUCH OF THE WRN HALF OF THE CWA DRY FOR MOST OF THE DAY. TUE NIGHT AND WED STORM #2 WILL IMPACT THE AREA AND WILL BE STRONGER AND WETTER. CURRENTLY THIS STORM IS IN THE DEVELOPING STAGES OVER THE ALEUTIANS AND IS FORECAST TO DEEPEN SIGNIFICANTLY OVER THE GULF OF AK...BECOMING A MINUS 3 TO 4 STANDARD DEVIATION 500 MB ANOMALY AND A MINUS 4.5 925 MB ANOMALY AND TRACKING OVER NORCAL. AFTER WATCHING THIS EVOLVE IN THE MODELING SINCE LAST WED...A STRONG EAST ASIAN JET DEVELOPED AND HEADED NEWD TOWARDS THE ALEUTIANS. THE DEEPENING ERN PAC TROF WILL AMPLIFY THE CENTRAL PAC HIGH...ALLOWING THE JET ENERGY DUE DIVE SEWD FROM THE GOA AND DEVELOP THE LARGE NEGATIVE ANOMALY. THE EAST ASIAN JET HAS TAPPED INTO AN ATMOSPHERIC RIVER ORIGINATING FROM THE PHILIPPINES. THE JET ENHANCED CONVECTION E OF JAPAN WHILE THE TWO PHILIPPINE TYPHOONS WERE PRESENT. NOW THIS TPW PLUME HAS CROSSED THE DATELINE AND WILL BECOME ENTRAINED INTO THE DEVELOPING GOA LOW. THE PWAT IS FORECAST TO BE ABOUT A +4 ANOMALY...AND THE MOISTURE AND DYNAMICS WILL BECOME FOCUSED OVER NORCAL DURING THIS TIME. THE GFS CROSS SECTIONS SHOW THE DEEPEST MOISTURE AND GREATEST OMEGA DURING THE 06Z-12Z TIME FRAME ON WED. WE EXPECT TO SEE AT LEAST DOUBLE OR TRIPLE THE QPFS IN THE VALLEY WITH STORM #2. THE COLDER GOA LOW WILL EVENTUALLY LOWER SNOW LEVELS BELOW THE MAJOR SIERNEV PASSES SO A WINTER STORM WATCH IS IN EFFECT FOR THE SIERNEV ZONES DURING THIS TIME AS SEVERAL INCHES OF SNOW ARE POSSIBLE. PRESSURE GRADIENTS ARE FORECAST TO TIGHTEN AHEAD OF THE STRONG COLD FRONT TUE NITE AND WED MORNING. ABOUT A 8 TO 9 MBS GRADIENT IS FORECAST FROM MFR-SAC WITH 925 MBS WINDS FORECAST TO INCREASE TO 35 TO 40 KTS RESULTING IN THE POSSIBILITY OF NEAR WIND ADVISORY CRITERIA FOR THE VALLEY. COULD ALSO SEE THUNDERSTORMS DEVELOP ON WED AS THE 5H COLD POCKET STEEPENS LAPSE RATES OVER THE AREA. WITH SUCH A LARGE LOW AFFECTING OUR AREA...BACKWASH CLOUDS AND SHOWERS ARE LIKELY TO DEVELOP ON THU. BY FRI AND NEXT WEEKEND...RIDGING IS EXPECTED TO BRING NORCAL DRIER AND WARMER WX. JHM && .AVIATION... COLD FRONT MVG INLAND TODAY. CONDS WILL DETIORATE AS THE DAY PROGRESSES. INCREASING CLOUDS WITH LOWERING CIGS AS THE FRONT SPREADS PRECIPITATION ACROSS OUR ENTIRE CWA BY TONIGHT. VCSH WILL FIRST AFFECT THE KRDD-KRBL VCNTY STARTING AROUND 14-16Z WITH -SHRA AND MVFR/IFR CIGS STARTING BETWEEN 18-20Z. -SHRA AND MVFR/IFR CIGS SHOULD AFFECT THE SAC METRO REGION 00-06Z WITH THESE CONDS AFFECTING THE KSCK-KMOD VCNTY SOON AFTER. INCREASING ONSHORE FLOW WILL BRING S-SWLY WINDS TO THE SAC VLY AND W-NWLY WINDS TO NRN SAN JOAQUIN VLY. WIND SPEEDS AT THE TAF SITES SHOULD BE LGT TO MDT AT 5-15 KTS WHILE RIDGETOP GUSTS PEAK BETWEEN 30-45 KTS. JBB && .STO WATCHES/WARNINGS/ADVISORIES... WINTER STORM WATCH FROM TUESDAY EVENING THROUGH WEDNESDAY EVENING ABOVE 6000 FEET FOR THE WEST SLOPE NORTHERN SIERRA NEVADA...WESTERN PLUMAS COUNTY/LASSEN PARK. &&
Hazardous weather outlook, Oct 3, 7:00 AM PDT, 7 hours 44 minutes before
HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE SACRAMENTO CA 700 AM PDT MON OCT 3 2011 CAZ013>019-063-064-066>069-041400- SHASTA LAKE AREA/NORTHERN SHASTA COUNTY- BURNEY BASIN/EASTERN SHASTA COUNTY-NORTHERN SACRAMENTO VALLEY- CENTRAL SACRAMENTO VALLEY-SOUTHERN SACRAMENTO VALLEY- CARQUINEZ STRAIT AND DELTA-NORTHERN SAN JOAQUIN VALLEY- MOUNTAINS SOUTHWESTERN SHASTA TO NORTHERN LAKE COUNTIES- CLEAR LAKE/SOUTHERN LAKE COUNTY-MOTHERLODE- EAST FOOTHILLS/NORTH SACRAMENTO VALLEY- WESTERN PLUMAS COUNTY/LASSEN PARK-WEST SLOPE NORTHERN SIERRA NEVADA- 700 AM PDT MON OCT 3 2011 THIS HAZARDOUS WEATHER OUTLOOK IS FOR INTERIOR NORTHERN CALIFORNIA. .DAY ONE...TODAY SYSTEM NUMBER 1 WILL AFFECT INTERIOR NORTHERN CALIFORNIA TODAY AND TONIGHT. * WINTER STORM WATCH.........SEE WWUS46 KSTO - WSWSTO FOR DETAILS * * SPECIAL WEATHER STATEMENT..SEE WWUS86 KSTO - SPSSTO FOR DETAILS * .DAYS TWO THROUGH SEVEN... TUESDAY THROUGH SUNDAY A SECOND...STRONGER AND WETTER STORM SYSTEM WILL AFFECT THE AREA TUESDAY NIGHT AND WEDNESDAY. * WINTER STORM WATCH.........SEE WWUS46 KSTO - WSWSTO FOR DETAILS * * SPECIAL WEATHER STATEMENT..SEE WWUS86 KSTO - SPSSTO FOR DETAILS * .SPOTTER INFORMATION STATEMENT... WEATHER SPOTTERS ARE ENCOURAGED TO REPORT SIGNIFICANT WEATHER CONDITIONS TO THEIR LOCAL NATIONAL WEATHER SERVICE OFFICE. THE LATEST WEATHER INFORMATION IS AVAILABLE ON THE INTERNET AT (LOWER CASE): HTTP://WWW.WRH.NOAA.GOV/STO
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Winter Storm Warnings in California, 2011Every winter storm warning in 2011
Sources
The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text.