Alert archive / California / Winter Storm Warnings in 2017
Winter Storm Warning 2, NWS Eureka, CA
NWS Eureka, CA issued this winter storm warning at Jan 6, 2017, 12:36 PM PST for 4 counties in California. It took effect at Jan 6, 2017, 10:00 PM PST. It was in force for 14 hr. 5 reports came from inside the area while it was in force.
The area
The counties it named, with what was reported inside it.
The facts
- Issued
- Jan 6, 2017, 12:36 PM PST (20:36 UTC)
- In effect from
- Jan 6, 2017, 10:00 PM PST
- Expired
- Jan 7, 2017, 12:00 PM PST
- In force
- 14 hr
- Issued by
- NWS Eureka, CA
Counties Del Norte County, CA, Humboldt County, CA, Mendocino County, CA, Trinity County, CA
The radar
The Eureka (Bunker Hill) radar (KBHX), 60 km from the middle of the area, began a volume at 20:35 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.
What was reported inside it
| Time | Report | Where | Remark |
|---|---|---|---|
| Jan 7, 7:45 AM PST | SNOW 2.8 | 1 Sw Orleans, CA | REPORT 1 TRAINED SPOTTER...ORLEANS AT 400 FEET...2.8 INCHES SINCE 10 PM LAST NIGHT. CURRENT TEMPERATURE 32 DEGREES. REPORT 2 PUBLIC...ORLEANS AT APPROX 400 FEET. SNOW OVERNIGHT 2 INCHES. |
| Jan 7, 7:45 AM PST | SNOW 4 | 11 Ssw Carrville, CA | AT 2500 FEET ACTUALLY IN COVINGTON MILL. SNOWING OVERNIGHT WITH 4 INCHES. CURRENT TEMP 33 DEGREES WITH A LOW TEMP OF 31 DEGREES. |
| Jan 7, 7:45 AM PST | SNOW 6 | 4 E Weaverville, CA | BETWEEN DOUGLAS CITY AND LEWISTON ON HWY 299 AT 2400 FEET. SNOWING LIGHTLY BUT STEADY OVERNIGHT WITH 6 INCHES OF ACCUMULATION. TEMPERATURE 33 DEGREES. |
| Jan 7, 9:19 AM PST | SNOW 2 | 2 Wnw Ruth, CA | HETTINSHAW...TRINTIY COUNTY NOT TOO FAR FROM RUTH LAKE. ELEVATION 3000 FEET. SNOW JUST STOPPING TURNING TO VERY LIGHT RAIN ALTHOUGH MUCH OF THE ROADS ARE SNOW COVERED. TEMPERATURE 32 DEGREES. |
| Jan 7, 9:30 AM PST | SNOW 0 | 3 Ssw Lewiston, CA | LEWISTON IN TRINITY COUNTY AT 1950 FEET. STARTED SNOWING AT 330 AM AND CHANGED TO LIGHT RAIN AT 930 AM. TEMP 34 DEGREES WITH CALM WINDS AND SNOW DEPTH 2 INCHES. |
Local storm reports filed while the alert was in force, from inside its polygon or its counties.
The nearest sounding before it
Medford/Jackson, OR (KMFR), launched 12:00Z, 8.6 hours before the alert went out and 204 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
- 1177 m above ground
- 0-6 km bulk shear
- 30 kt
- 0-1 km storm-relative helicity
- 57 m²/s²
- 0-3 km storm-relative helicity
- 135 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
850 WWUS46 KEKA 062036 WSWEKA URGENT - WINTER WEATHER MESSAGE NATIONAL WEATHER SERVICE EUREKA CA 1236 PM PST FRI JAN 6 2017 CAZ102-105>108-111-070445- /O.UPG.KEKA.WS.A.0001.170107T0600Z-170107T1800Z/ /O.NEW.KEKA.WS.W.0002.170107T0600Z-170107T2000Z/ /O.EXT.KEKA.WW.Y.0002.170107T0600Z-170107T2000Z/ DEL NORTE INTERIOR-NORTHERN HUMBOLDT INTERIOR- SOUTHERN HUMBOLDT INTERIOR-NORTHERN TRINITY-SOUTHERN TRINITY- NORTHEASTERN MENDOCINO INTERIOR- 1236 PM PST FRI JAN 6 2017 ...WINTER STORM WARNING IN EFFECT FROM 10 PM THIS EVENING TO NOON SATURDAY ABOVE 3500 FEET... ...WINTER WEATHER ADVISORY NOW IN EFFECT FROM 10 PM THIS EVENING TO NOON SATURDAY ABOVE 2000 FEET... SNOW ACCUMULATIONS...6 TO 12 INCHES ABOVE 3500 FEET...1 TO 4 INCHES ABOVE 2000 FEET. HIGHER ACCUMULATIONS POSSIBLE ALONG HIGHEST RIDGETOPS. LOCATIONS IMPACTED...COLLIER TUNNEL...BERRY SUMMIT...OREGON MOUNTAIN PASS...BUCKHORN SUMMIT...SOUTH FORK MOUNTAIN...WEAVERVILLE... TRINITY CENTER...AND HAYFORK. HIGHWAYS IMPACTED...PASSES ON 199...299...36...3. FOR A DETAILED VIEW OF THE HAZARD AREA...VISIT HTTP://WWW.WEATHER.GOV/EUREKA/HAZARDS 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. A WINTER WEATHER ADVISORY FOR SNOW MEANS THAT PERIODS OF SNOW WILL CAUSE PRIMARILY TRAVEL DIFFICULTIES. BE PREPARED FOR SNOW COVERED ROADS AND LIMITED VISIBILITIES...AND USE CAUTION WHILE DRIVING. $$
4 follow-up statements
835 WWUS46 KEKA 070442 WSWEKA URGENT - WINTER WEATHER MESSAGE NATIONAL WEATHER SERVICE EUREKA CA 842 PM PST FRI JAN 6 2017 CAZ102-105>108-111-072000- /O.CON.KEKA.WS.W.0002.170107T0600Z-170107T2000Z/ /O.CON.KEKA.WW.Y.0002.170107T0600Z-170107T2000Z/ DEL NORTE INTERIOR-NORTHERN HUMBOLDT INTERIOR- SOUTHERN HUMBOLDT INTERIOR-NORTHERN TRINITY-SOUTHERN TRINITY- NORTHEASTERN MENDOCINO INTERIOR- 842 PM PST FRI JAN 6 2017 ...WINTER STORM WARNING REMAINS IN EFFECT UNTIL NOON PST SATURDAY ABOVE 3500 FEET... ...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL NOON PST SATURDAY ABOVE 2000 FEET... LOCATIONS IMPACTED...COLLIER TUNNEL...BERRY SUMMIT...OREGON MOUNTAIN PASS...BUCKHORN SUMMIT...SOUTH FORK MOUNTAIN... WEAVERVILLE... TRINITY CENTER...AND HAYFORK. HIGHWAYS IMPACTED...PASSES ON 199...299...36...3. FOR A DETAILED VIEW OF THE HAZARD AREA...VISIT HTTP://WWW.WEATHER.GOV/EUREKA/HAZARDS PRECAUTIONARY/PREPAREDNESS ACTIONS... A WINTER STORM WARNING FOR HEAVY SNOW MEANS SEVERE WINTER WEATHER CONDITIONS ARE EXPECTED OR OCCURRING. SIGNIFICANT AMOUNTS OF SNOW ARE FORECAST THAT WILL MAKE TRAVEL DANGEROUS. ONLY TRAVEL IN AN EMERGENCY. IF YOU MUST TRAVEL...KEEP AN EXTRA FLASHLIGHT... FOOD...AND WATER IN YOUR VEHICLE IN CASE OF AN EMERGENCY. A WINTER WEATHER ADVISORY FOR SNOW MEANS THAT PERIODS OF SNOW WILL CAUSE PRIMARILY TRAVEL DIFFICULTIES. BE PREPARED FOR SNOW COVERED ROADS AND LIMITED VISIBILITIES...AND USE CAUTION WHILE DRIVING. $$
198 WWUS46 KEKA 070656 WSWEKA URGENT - WINTER WEATHER MESSAGE NATIONAL WEATHER SERVICE EUREKA CA 1056 PM PST FRI JAN 6 2017 CAZ102-105>108-111-071500- /O.CON.KEKA.WS.W.0002.000000T0000Z-170107T2000Z/ /O.CON.KEKA.WW.Y.0002.000000T0000Z-170107T2000Z/ DEL NORTE INTERIOR-NORTHERN HUMBOLDT INTERIOR- SOUTHERN HUMBOLDT INTERIOR-NORTHERN TRINITY-SOUTHERN TRINITY- NORTHEASTERN MENDOCINO INTERIOR- 1056 PM PST FRI JAN 6 2017 ...WINTER STORM WARNING REMAINS IN EFFECT UNTIL NOON PST SATURDAY ABOVE 3500 FEET... ...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL NOON PST SATURDAY ABOVE 2000 FEET... SNOW ACCUMULATIONS...6 TO 12 INCHES ABOVE 3500 FEET...1 TO 4 INCHES ABOVE 2000 FEET. HIGHER ACCUMULATIONS POSSIBLE ALONG HIGHEST RIDGETOPS. LOCATIONS IMPACTED...COLLIER TUNNEL...BERRY SUMMIT...OREGON MOUNTAIN PASS...BUCKHORN SUMMIT...SOUTH FORK MOUNTAIN...WEAVERVILLE...TRINITY CENTER...AND HAYFORK. HIGHWAYS IMPACTED...PASSES ON 199...299...36...3. FOR A DETAILED VIEW OF THE HAZARD AREA...VISIT HTTP://WWW.WEATHER.GOV/EUREKA/HAZARDS 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. A WINTER WEATHER ADVISORY FOR SNOW MEANS THAT PERIODS OF SNOW WILL CAUSE PRIMARILY TRAVEL DIFFICULTIES. BE PREPARED FOR SNOW COVERED ROADS AND LIMITED VISIBILITIES...AND USE CAUTION WHILE DRIVING. $$
142 WWUS46 KEKA 071206 WSWEKA URGENT - WINTER WEATHER MESSAGE NATIONAL WEATHER SERVICE EUREKA CA 406 AM PST SAT JAN 7 2017 ...SNOW LEVELS WILL RAPIDLY RISE THROUGH THE AFTERNOON AS A WARM FRONT SHIFTS NORTHWARD... CAZ102-105-106-111-072000- /O.CAN.KEKA.WS.W.0002.000000T0000Z-170107T2000Z/ /O.CON.KEKA.WW.Y.0002.000000T0000Z-170107T2000Z/ DEL NORTE INTERIOR-NORTHERN HUMBOLDT INTERIOR- SOUTHERN HUMBOLDT INTERIOR-NORTHEASTERN MENDOCINO INTERIOR- 406 AM PST SAT JAN 7 2017 ...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL NOON PST TODAY... ...WINTER STORM WARNING IS CANCELLED... THE NATIONAL WEATHER SERVICE IN EUREKA HAS CANCELLED THE WINTER STORM WARNING. SNOW ACCUMULATIONS...1 TO 4 INCHES. SNOW LEVELS...2000 FEET DEL NORTE INTERIOR...3000 FEET HUMBOLDT INTERIOR...3500 FEET NORTHEASTERN MENDOCINO INTERIOR. LOCATIONS IMPACTED...COLLIER TUNNEL...BERRY SUMMIT...COVELO. HIGHWAYS IMPACTED...PASSES ON HWY 199...HWY 299. FOR A DETAILED VIEW OF THE HAZARD AREA...VISIT HTTP://WWW.WEATHER.GOV/EUREKA/HAZARDS PRECAUTIONARY/PREPAREDNESS ACTIONS... A WINTER WEATHER ADVISORY FOR SNOW MEANS THAT PERIODS OF SNOW WILL CAUSE PRIMARILY TRAVEL DIFFICULTIES. BE PREPARED FOR SNOW COVERED ROADS AND LIMITED VISIBILITIES...AND USE CAUTION WHILE DRIVING. && $$ CAZ107-108-072000- /O.CON.KEKA.WS.W.0002.000000T0000Z-170107T2000Z/ /O.CON.KEKA.WW.Y.0002.000000T0000Z-170107T2000Z/ NORTHERN TRINITY-SOUTHERN TRINITY- 406 AM PST SAT JAN 7 2017 ...WINTER STORM WARNING REMAINS IN EFFECT UNTIL NOON PST TODAY ABOVE 3500 FEET... ...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL NOON PST TODAY ABOVE 2000 FEET... SNOW ACCUMULATIONS...6 TO 12 INCHES ABOVE 3500 FEET...1 TO 4 INCHES ABOVE 2000 FEET. HIGHER ACCUMULATIONS POSSIBLE ALONG HIGHEST RIDGETOPS. LOCATIONS IMPACTED...OREGON MOUNTAIN PASS...BUCKHORN SUMMIT...SOUTH FORK MOUNTAIN...WEAVERVILLE...TRINITY CENTER...AND HAYFORK. HIGHWAYS IMPACTED...PASSES ON HWY 299...HWY 36...HWY 3. FOR A DETAILED VIEW OF THE HAZARD AREA...VISIT HTTP://WWW.WEATHER.GOV/EUREKA/HAZARDS 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. A WINTER WEATHER ADVISORY FOR SNOW MEANS THAT PERIODS OF SNOW WILL CAUSE PRIMARILY TRAVEL DIFFICULTIES. BE PREPARED FOR SNOW COVERED ROADS AND LIMITED VISIBILITIES...AND USE CAUTION WHILE DRIVING. $$
631 WWUS46 KEKA 071959 WSWEKA URGENT - WINTER WEATHER MESSAGE NATIONAL WEATHER SERVICE EUREKA CA 1159 AM PST SAT JAN 7 2017 CAZ107-108-072100- /O.EXP.KEKA.WS.W.0002.000000T0000Z-170107T2000Z/ /O.EXP.KEKA.WW.Y.0002.000000T0000Z-170107T2000Z/ NORTHERN TRINITY-SOUTHERN TRINITY- 1159 AM PST SAT JAN 7 2017 ...WINTER STORM WARNING WILL EXPIRE AT NOON PST TODAY ABOVE 3500 FEET... ...WINTER WEATHER ADVISORY WILL EXPIRE AT NOON PST TODAY... TEMPERATURES WILL CONTINUE TO RISE THROUGH THE AFTERNOON AND PRECIPITATION RATES WILL BE LIGHT. THUS...WINTER WEATHER IMPACTS WILL BE GREATLY DIMINISHED. HOWEVER...MOTORISTS ARE ADVISED TO USE CAUTION ON AREA ROADS AND CONTINUE TO CARRY CHAINS IF TRAVELING THROUGH HIGH ELEVATION PASSES...PARTICULARLY ON HIGHWAYS 36 AND 3. $$ CAZ102-105-106-111-072100- /O.EXP.KEKA.WW.Y.0002.000000T0000Z-170107T2000Z/ DEL NORTE INTERIOR-NORTHERN HUMBOLDT INTERIOR- SOUTHERN HUMBOLDT INTERIOR-NORTHEASTERN MENDOCINO INTERIOR- 1159 AM PST SAT JAN 7 2017 ...WINTER WEATHER ADVISORY WILL EXPIRE AT NOON PST TODAY... TEMPERATURES WILL CONTINUE TO RISE THROUGH THE AFTERNOON AND PRECIPITATION RATES WILL BE LIGHT. THUS...WINTER WEATHER IMPACTS WILL BE GREATLY DIMINISHED. HOWEVER...MOTORISTS SHOULD BE ADVISED TO USE CAUTION ON AREA ROADS...AS SNOW MAY TAKE SOME TIME TO MELT. $$
The office that day
Everything else NWS Eureka, CA issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jan 5, 8:29 PM PST | Hard Freeze Warning | EKA | Del Norte, Humboldt, Mendocino | 13 hr |
| Jan 6, 2:52 AM PST | Gale Warning | EKA | 58 hr | |
| Jan 6, 3:24 AM PST | Winter Storm Watch | EKA | Del Norte, Humboldt, Mendocino, Trinity | 9 hr |
| Jan 6, 3:24 AM PST | Winter Weather Advisory | EKA | Del Norte, Humboldt, Mendocino, Trinity | 33 hr |
| Jan 6, 2:14 PM PST | Flood Watch | EKA | Del Norte, Humboldt, Mendocino, Trinity | 50 hr |
Nearby
Winter Storm Warnings in California, 2017Every winter storm warning in 2017
Sources
The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.