Alert archive / California / Winter Storm Warnings in 2017
Winter Storm Warning 4, NWS Eureka, CA
NWS Eureka, CA issued this winter storm warning at Jan 19, 2017, 2:00 PM PST for Trinity County, California. It took effect at Jan 19, 2017, 10:00 PM PST. It was in force for 14 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, 2017, 2:00 PM PST (22:00 UTC)
- In effect from
- Jan 19, 2017, 10:00 PM PST
- Expired
- Jan 20, 2017, 11:50 AM PST
- In force
- 14 hr
- Issued by
- NWS Eureka, CA
County Trinity County, CA
The radar
The Eureka (Bunker Hill) radar (KBHX), 101 km from the middle of the area, began a volume at 22:01 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
Medford/Jackson, OR (KMFR), launched 12:00Z, 10.0 hours before the alert went out and 193 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
- 730 m above ground
- 0-6 km bulk shear
- 29 kt
- 0-1 km storm-relative helicity
- 97 m²/s²
- 0-3 km storm-relative helicity
- 139 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
524 WWUS46 KEKA 192200 CCA WSWEKA URGENT - WINTER WEATHER MESSAGE...CORRECTED NATIONAL WEATHER SERVICE EUREKA CA 200 PM PST THU JAN 19 2017 ...ANOTHER ROUND OF HIGH ELEVATION SNOW EXPECTED LATE TONIGHT THROUGH FRIDAY... CAZ107-108-201000- /O.NEW.KEKA.WS.W.0004.170120T0600Z-170121T0000Z/ NORTHERN TRINITY-SOUTHERN TRINITY- 200 PM PST THU JAN 19 2017 ...WINTER STORM WARNING IN EFFECT FROM 10 PM THIS EVENING TO 4 PM PST FRIDAY... THE NATIONAL WEATHER SERVICE IN EUREKA HAS ISSUED A WINTER STORM WARNING FOR SNOW...WHICH IS IN EFFECT FROM 10 PM THIS EVENING TO 4 PM PST FRIDAY. * SNOW ACCUMULATIONS...4 TO 8 INCHES ABOVE 3000 FEET. LIGHTER ACCUMULATIONS TO AS LOW AS 2300 FEET ALONG THE HIGHWAY 3 CORRIDOR. * LOCATIONS IMPACTED...TRINITY CENTER...COFFEE CREEK...COVINGTON MILL...PEANUT...RUTH...ELEVATED LOCATIONS SURROUNDING WEAVERVILLE AND HAYFORK. * HIGHWAYS IMPACTED...3...36...AND 299. * FOR A DETAILED VIEW OF THE HAZARD AREA...VISIT HTTP://WWW.WEATHER.GOV/EUREKA/HAZARDS. PRECAUTIONARY/PREPAREDNESS ACTIONS... A WINTER STORM WATCH MEANS THERE IS A POTENTIAL FOR SIGNIFICANT SNOW...SLEET...OR ICE ACCUMULATIONS THAT MAY IMPACT TRAVEL. CONTINUE TO MONITOR THE LATEST FORECASTS. && $$ CAZ102-105-106-110-111-201000- /O.COR.KEKA.WW.Y.0005.170120T0600Z-170121T0000Z/ DEL NORTE INTERIOR-NORTHERN HUMBOLDT INTERIOR- SOUTHERN HUMBOLDT INTERIOR-NORTHWESTERN MENDOCINO INTERIOR- NORTHEASTERN MENDOCINO INTERIOR- 200 PM PST THU JAN 19 2017 ...WINTER WEATHER ADVISORY REMAINS IN EFFECT FROM 10 PM THIS EVENING TO 4 PM PST FRIDAY... * SNOW ACCUMULATIONS...2 TO 5 INCHES ABOVE 3000 FEET LATE TONIGHT THROUGH THE DAY ON FRIDAY. LIGHTER ACCUMULATIONS TO AS LOW AS 2500 FEET. * LOCATIONS IMPACTED...ABOVE 3000 FEET. * HIGHWAYS IMPACTED...HIGHWAY 299 AND BERRY SUMMIT...BALD HILLS ROAD...OTHER RURAL ROADWAYS NEAR AND ABOVE 3000 FEET. * FOR A DETAILED VIEW OF THE HAZARD AREA...VISIT HTTP://WWW.WEATHER.GOV/EUREKA/HAZARDS... PRECAUTIONARY/PREPAREDNESS ACTIONS... A WINTER WEATHER ADVISORY MEANS THAT PERIODS OF SNOW WILL CAUSE TRAVEL DIFFICULTIES. BE PREPARED FOR SLIPPERY ROADS AND LIMITED VISIBILITIES... AND USE CAUTION WHILE DRIVING. && $$
3 follow-up statements
494 WWUS46 KEKA 201000 WSWEKA URGENT - WINTER WEATHER MESSAGE NATIONAL WEATHER SERVICE EUREKA CA 200 AM PST FRI JAN 20 2017 ...ANOTHER ROUND OF HIGH ELEVATION SNOW EXPECTED LATE TONIGHT THROUGH FRIDAY... CAZ107-108-201800- /O.CON.KEKA.WS.W.0004.000000T0000Z-170121T0000Z/ NORTHERN TRINITY-SOUTHERN TRINITY- 200 AM PST FRI JAN 20 2017 ...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 4 PM PST THIS AFTERNOON... * SNOW ACCUMULATIONS...4 TO 8 INCHES ABOVE 3000 FEET. LIGHTER ACCUMULATIONS TO AS LOW AS 2300 FEET ALONG THE HIGHWAY 3 CORRIDOR. * LOCATIONS IMPACTED...TRINITY CENTER...COFFEE CREEK...COVINGTON MILL...PEANUT...RUTH...ELEVATED LOCATIONS SURROUNDING WEAVERVILLE AND HAYFORK. * HIGHWAYS IMPACTED...3...36...AND 299. * FOR A DETAILED VIEW OF THE HAZARD AREA...VISIT HTTP://WWW.WEATHER.GOV/EUREKA/HAZARDS. PRECAUTIONARY/PREPAREDNESS ACTIONS... A WINTER STORM WATCH MEANS THERE IS A POTENTIAL FOR SIGNIFICANT SNOW...SLEET...OR ICE ACCUMULATIONS THAT MAY IMPACT TRAVEL. CONTINUE TO MONITOR THE LATEST FORECASTS. && $$ CAZ102-105-106-110-111-201800- /O.CON.KEKA.WW.Y.0005.000000T0000Z-170121T0000Z/ DEL NORTE INTERIOR-NORTHERN HUMBOLDT INTERIOR- SOUTHERN HUMBOLDT INTERIOR-NORTHWESTERN MENDOCINO INTERIOR- NORTHEASTERN MENDOCINO INTERIOR- 200 AM PST FRI JAN 20 2017 ...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 4 PM PST THIS AFTERNOON... * SNOW ACCUMULATIONS...2 TO 5 INCHES ABOVE 3000 FEET LATE TONIGHT THROUGH THE DAY ON FRIDAY. LIGHTER ACCUMULATIONS TO AS LOW AS 2500 FEET. * LOCATIONS IMPACTED...ABOVE 3000 FEET. * HIGHWAYS IMPACTED...HIGHWAY 299 AND BERRY SUMMIT...BALD HILLS ROAD...OTHER RURAL ROADWAYS NEAR AND ABOVE 3000 FEET. * FOR A DETAILED VIEW OF THE HAZARD AREA...VISIT HTTP://WWW.WEATHER.GOV/EUREKA/HAZARDS... PRECAUTIONARY/PREPAREDNESS ACTIONS... A WINTER WEATHER ADVISORY MEANS THAT PERIODS OF SNOW WILL CAUSE TRAVEL DIFFICULTIES. BE PREPARED FOR SLIPPERY ROADS AND LIMITED VISIBILITIES... AND USE CAUTION WHILE DRIVING. && $$
160 WWUS46 KEKA 201005 WSWEKA URGENT - WINTER WEATHER MESSAGE NATIONAL WEATHER SERVICE EUREKA CA 205 AM PST FRI JAN 20 2017 ...ANOTHER ROUND OF HIGH ELEVATION SNOW EXPECTED THIS MORNING THROUGH THIS AFTERNOON... CAZ107-108-202000- /O.CON.KEKA.WS.W.0004.000000T0000Z-170121T0000Z/ NORTHERN TRINITY-SOUTHERN TRINITY- 205 AM PST FRI JAN 20 2017 ...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 4 PM PST THIS AFTERNOON... * SNOW ACCUMULATIONS...4 TO 8 INCHES ABOVE 3000 FEET. LIGHTER ACCUMULATIONS TO AS LOW AS 2300 FEET ALONG THE HIGHWAY 3 CORRIDOR. * LOCATIONS IMPACTED...TRINITY CENTER...COFFEE CREEK...COVINGTON MILL...PEANUT...RUTH...ELEVATED LOCATIONS SURROUNDING WEAVERVILLE AND HAYFORK. * HIGHWAYS IMPACTED...3...36...AND 299. * FOR A DETAILED VIEW OF THE HAZARD AREA...VISIT HTTP://WWW.WEATHER.GOV/EUREKA/HAZARDS. PRECAUTIONARY/PREPAREDNESS ACTIONS... A WINTER STORM WATCH MEANS THERE IS A POTENTIAL FOR SIGNIFICANT SNOW...SLEET...OR ICE ACCUMULATIONS THAT MAY IMPACT TRAVEL. CONTINUE TO MONITOR THE LATEST FORECASTS. && $$ CAZ102-105-106-110-111-202000- /O.CON.KEKA.WW.Y.0005.000000T0000Z-170121T0000Z/ DEL NORTE INTERIOR-NORTHERN HUMBOLDT INTERIOR- SOUTHERN HUMBOLDT INTERIOR-NORTHWESTERN MENDOCINO INTERIOR- NORTHEASTERN MENDOCINO INTERIOR- 205 AM PST FRI JAN 20 2017 ...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 4 PM PST THIS AFTERNOON... * SNOW ACCUMULATIONS...2 TO 5 INCHES ABOVE 3000 FEET LATE TONIGHT THROUGH THE DAY ON FRIDAY. LIGHTER ACCUMULATIONS TO AS LOW AS 2500 FEET. * LOCATIONS IMPACTED...ABOVE 3000 FEET. * HIGHWAYS IMPACTED...HIGHWAY 299 AND BERRY SUMMIT...BALD HILLS ROAD...OTHER RURAL ROADWAYS NEAR AND ABOVE 3000 FEET. * FOR A DETAILED VIEW OF THE HAZARD AREA...VISIT HTTP://WWW.WEATHER.GOV/EUREKA/HAZARDS... PRECAUTIONARY/PREPAREDNESS ACTIONS... A WINTER WEATHER ADVISORY MEANS THAT PERIODS OF SNOW WILL CAUSE TRAVEL DIFFICULTIES. BE PREPARED FOR SLIPPERY ROADS AND LIMITED VISIBILITIES... AND USE CAUTION WHILE DRIVING. && $$
066 WWUS46 KEKA 201950 WSWEKA URGENT - WINTER WEATHER MESSAGE NATIONAL WEATHER SERVICE EUREKA CA 1150 AM PST FRI JAN 20 2017 ...SCATTERED TO NUMEROUS SHOWERS WILL CONTINUE TO RESULT IN PERIODS OF HIGH ELEVATION SNOW THROUGH SATURDAY MORNING... CAZ107-108-202100- /O.CAN.KEKA.WS.W.0004.000000T0000Z-170121T0000Z/ NORTHERN TRINITY-SOUTHERN TRINITY- 1150 AM PST FRI JAN 20 2017 ...WINTER STORM WARNING IS CANCELLED AND WILL BE REPLACED BY A WINTER WEATHER ADVISORY... SHOWERS HAVE DIMINISHED IN COVERAGE ACROSS MUCH OF TRINITY COUNTY, MEANING THAT HEAVY SNOW HAS BECOME MUCH LESS WIDESPREAD. SCATTERED SNOW SHOWERS WILL CONTINUE THROUGH THE DAY, WITH ADDITIONAL LIGHT ACCUMULATIONS POSSIBLE. SNOW LEVELS WILL FLUCTUATE BETWEEN 2500 AND 3000 FEET, WITH LIGHT ACCUMULATIONS EXPECTED AT OR ABOVE THESE ELEVATIONS THROUGH EARLY SATURDAY. $$ CAZ102-105-106-110-111-210400- /O.EXT.KEKA.WW.Y.0005.000000T0000Z-170121T1800Z/ DEL NORTE INTERIOR-NORTHERN HUMBOLDT INTERIOR- SOUTHERN HUMBOLDT INTERIOR-NORTHWESTERN MENDOCINO INTERIOR- NORTHEASTERN MENDOCINO INTERIOR- 1150 AM PST FRI JAN 20 2017 ...WINTER WEATHER ADVISORY NOW IN EFFECT UNTIL 10 AM PST SATURDAY... * SNOW ACCUMULATIONS...AN ADDITIONAL 2 TO 5 INCHES ABOVE 3000 FEET LATE TONIGHT THROUGH SATURDAY MORNING. LIGHTER ACCUMULATIONS TO AS LOW AS 2500 FEET...WITH HIGHER TOTALS ABOVE 4000 FEET. * LOCATIONS IMPACTED...ABOVE 3000 FEET. * HIGHWAYS IMPACTED...BALD HILLS ROAD AND OTHER RURAL ROADWAYS NEAR AND ABOVE 3000 FEET. BURSTS OF SNOW WILL BE POSSIBLE AT BERRY SUMMIT ALONG HIGHWAY 299 AS WELL...WITH LIGHT ACCUMULATIONS OVERNIGHT TONIGHT. * FOR A DETAILED VIEW OF THE HAZARD AREA...VISIT HTTP://WWW.WEATHER.GOV/EUREKA/HAZARDS... PRECAUTIONARY/PREPAREDNESS ACTIONS... A WINTER WEATHER ADVISORY MEANS THAT PERIODS OF SNOW WILL CAUSE TRAVEL DIFFICULTIES. BE PREPARED FOR SLIPPERY ROADS AND LIMITED VISIBILITIES... AND USE CAUTION WHILE DRIVING. && $$
The office that day
Everything else NWS Eureka, CA issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jan 18, 6:11 PM PST | Hazardous Seas Warning | EKA | 9 hr | |
| Jan 19, 1:39 AM PST | Special Weather Statement | EKA | Humboldt | 51 min |
| Jan 19, 2:02 AM PST | Special Weather Statement | EKA | Humboldt | 43 min |
| Jan 19, 2:30 AM PST | Gale Warning | EKA | 25 hr | |
| Jan 19, 2:30 AM PST | Small Craft Advisory | EKA | 19 hr | |
| Jan 19, 4:44 AM PST | Winter Storm Watch | EKA | Trinity | 9 hr |
| Jan 19, 4:44 AM PST | Winter Weather Advisory | EKA | Trinity | 5 hr |
| Jan 19, 4:44 AM PST | Winter Weather Advisory | EKA | Del Norte, Humboldt, Mendocino, Trinity | 56 hr |
| Jan 19, 8:57 AM PST | River Flood Watch | EKA | Mendocino | 6 hr |
| Jan 19, 11:55 AM PST | High Surf Warning | EKA | Del Norte, Humboldt, Mendocino | 52 hr |
| Jan 19, 2:39 PM PST | Wind Advisory | EKA | Del Norte, Humboldt, Mendocino | 15 hr |
| Jan 19, 2:51 PM PST | River Flood Warning | EKA | Mendocino | 32 hr |
| Jan 19, 3:21 PM PST | Hazardous Seas Warning | EKA | 51 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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.