Alert archive / California / Special Weather Statements in 2015
Special Weather Statement, NWS Eureka, CA
NWS Eureka, CA issued this special weather statement at Dec 18, 2015, 1:27 AM PST for Del Norte County, California. It was in force for 48 min. No storm report in the archive falls inside the area while it was in force.
The area
The outline as issued.
The facts
- Issued
- Dec 18, 2015, 1:27 AM PST (09:27 UTC)
- Expired
- Dec 18, 2015, 2:15 AM PST
- In force
- 48 min
- Issued by
- NWS Eureka, CA
County Del Norte County, CA
The radar
The Medford radar (KMAX), 122 km from the middle of the area, began a volume at 09:29 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 00:00Z, 9.5 hours before the alert went out and 128 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
- 874 m above ground
- 0-6 km bulk shear
- 45 kt
- 0-1 km storm-relative helicity
- 294 m²/s²
- 0-3 km storm-relative helicity
- 517 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
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</html>What forecasters said that day
The local office's own words before this special weather statement went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.
NWS Eureka, CA wrote its last area forecast discussion before this special weather statement went out at Dec 17, 9:21 PM PST, 4 hours 6 minutes earlier.
Area forecast discussion, Dec 17, 9:21 PM PST, 4 hours 6 minutes before
AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE EUREKA CA
921 PM PST THU DEC 17 2015
.SYNOPSIS...GUSTY SOUTHERLY WINDS WILL INCREASE THIS EVENING AND
OVERNIGHT AS A COLD FRONT MOVES THROUGH THE REGION. THE FRONT
WILL PRODUCE PERIODS OF RAIN WHICH MAY BE HEAVY AT TIMES
OVERNIGHT. ADDITIONAL RAIN IS EXPECTED FOR THE WEEKEND AND EARLY
NEXT WEEK.
&&
.UPDATE...DID A QUICK UPDATE TO THE FORECAST THIS EVENING TO
REFINE SNOW LEVELS AND SNOW AMOUNTS. THE 00Z GFS CAME IN SLIGHTLY
WETTER AND COLDER AS THE UPPER LEVEL TROUGH MOVES OVERHEAD ON
FRIDAY NIGHT. FRIDAY NIGHT SNOW LEVELS LOOK TO FALL AS LOW AS 3000
FEET. THIS BRINGS US VERY CLOSE TO SNOW ADVISORY AMOUNTS SO A SNOW
ADVISORY MAY BE NEEDED. CONFIDENCE IN THE AMOUNTS IS MARGINAL SO
HAVE HELD OFF ON ISSUING ANYTHING JUST YET. MOST OF THE SNOW LOOKS
TO REMAIN ABOVE THE MAJOR PASS LEVELS ON HWY 299 AND HWY
199...ALTHOUGH HWY 3 AND HWY 36 MAY SEE SOME IMPACTS. MKK
&&
.PREV DISCUSSION......ISSUED AT 258 PM PST...
DISCUSSION...A COLD FRONT WILL MOVE THROUGH THE REGION OVERNIGHT.
SOUTHERLY WINDS WILL INCREASE AND BECOME GUSTY THIS EVENING AND
OVERNIGHT. THEREFORE A WIND ADVISORY WILL BE IN EFFECT ACROSS THE
NORTHERN REDWOOD COAST WHICH INCLUDES CRESCENT CITY FROM 10 PM
TONIGHT THROUGH 4 AM FRIDAY MORNING. GUSTY WINDS WILL OCCUR ACROSS
INLAND HIGHER TERRAIN OVERNIGHT AS THE FRONT APPROACHES AND MOVES
EASTWARD. WIND GUSTS UP TO 45 MPH MAY OCCUR NEAR CRESCENT CITY
WITH HIGHER WINDS OVER HIGHER ELEVATIONS OF DEL NORTE COUNTY. SNOW
LEVELS WILL FALL TO NEARLY 3000 FT BEHIND THE FRONT FRIDAY NIGHT
INTO SATURDAY WITH RAIN TRANSITIONING TO SNOW SHOWERS. RAINFALL
AMOUNTS OF 3-4 INCHES ARE POSSIBLE ACROSS DEL NORTE COUNTY THROUGH
EARLY SATURDAY MORNING AND 1-2 INCHES ARE POSSIBLE SOUTH OF DEL
NORTE COUNTY. THERE IS A SLIGHT CHANCE FOR ISOLATED THUNDERSTORMS
OCCURRING ACROSS SOME AREAS FRIDAY NIGHT AS THE FRONT MOVES
THROUGH THE AREA.
RAIN CHANCES WILL DIMINISH SATURDAY WITH MOSTLY CLOUDY SKIES
OCCURRING. ANOTHER COLD FRONT WILL MOVE THROUGH THE REGION SUNDAY.
RAIN CHANCES WILL INCREASE AGAIN SUNDAY AS THE FRONT MOVES
THROUGH THE AREA. RAINFALL FROM NEAR 1 INCH TO 1.5 INCHES ARE
LIKELY WITH THE SYSTEM ON SUNDAY. SOILS WILL BE SATURATED WHEN
THIS SYSTEM MOVES THROUGH ON SUNDAY. PERSISTENT MODERATE RAIN WITH
PERIODS OF HEAVY RAIN WILL OCCUR MONDAY THROUGH TUESDAY NIGHT.
THERE IS THE POTENTIAL FOR FLOODING ACROSS SOME AR4EAS WITH THE
SATURATED SOILS AND RAINFALL OCCURRING MONDAY INTO TUESDAY
MORNING. IF POSSIBLE CONDITIONS ARE ANTICIPATED MO9NDAY OR TUESDAY
A HYDROLOGIC OUTLOOK MAY BE ISSUED WITH POSSIBLE FLOOD WATCHES
BEING DISSEMINATED.
AVIATION...A WARM FRONT WILL CONTINUE TO GENERATE LIGHT TO MODERATE
RAIN AND IFR CONDITIONS THIS AFTERNOON. CONDITIONS MAY IMPROVE
SLIGHTLY THIS EVENING AS SOUTHERLY WINDS INCREASE IN ADVANCE OF A
COLD FRONT. THIS FRONT WILL MOVE ACROSS THE REGION LATE TONIGHT
BRINGING GUSTY SOUTHERLY WINDS TO THE COASTAL TERMINALS (MAINLY
KCEC) AND DETERIORATING CEILINGS AND VSBYS TO ALL TERMINALS BY
DAYBREAK FRIDAY.
MARINE...SOUTHERLY WINDS WINDS WILL INCREASE TONIGHT AS A COLD
FRONT APPROACHES THE WATERS THIS EVENING. GALE WARNINGS ARE IN
EFFECT FOR THE NORTHERN WATERS STARTING THIS EVENING...AND THE
SOUTHERN WATERS LATE TONIGHT INTO EARLY FRIDAY MORNING.
CONDITIONS WILL BE WORST NORTH OF CAPE MENDOCINO. WHILE WINDS WILL
GUST TO GALE FORCE SOUTH OF THE CAPE, SEAS WILL NOT HAVE AS MUCH
TIME OR FETCH TO BUILD. BEHIND THE FRONT, WINDS WILL EASE AND
STEEP WAVES WILL BEGIN TO SUBSIDE ON FRIDAY, BUT POST FRONTAL WNW
SWELL WILL MAINTAIN AN ELEVATED SEA STATE THROUGH THE WEEKEND.
ANOTHER SERIES OF FRONTS WILL CROSS THE WATERS THIS WEEKEND INTO
EARLY NEXT WEEK.
&&
.EKA WATCHES/WARNINGS/ADVISORIES...
CA...
WIND ADVISORY UNTIL 4 AM PST FRIDAY FOR CAZ001.
NORTHWEST CALIFORNIA COASTAL WATERS...
SMALL CRAFT ADVISORY UNTIL 3 AM PST FRIDAY FOR PZZ455.
GALE WARNING FROM 3 AM TO 9 AM PST FRIDAY FOR PZZ455.
GALE WARNING UNTIL 3 AM PST FRIDAY FOR PZZ450-470.
GALE WARNING UNTIL 9 AM PST FRIDAY FOR PZZ475.
&&
VISIT US AT HTTP://WWW.WEATHER.GOV/EUREKA
FOLLOW US ON FACEBOOK AND TWITTER AT:
HTTP://WWW.FACEBOOK.COM/NWSEUREKA
HTTP://WWW.TWITTER.COM/NWSEUREKAHazardous weather outlook, Dec 17, 2:33 PM PST, 10 hours 54 minutes before
HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE EUREKA CA 233 PM PST THU DEC 17 2015 CAZ001-182245- REDWOOD COAST- 233 PM PST THU DEC 17 2015 ...WIND ADVISORY IN EFFECT FROM 10 PM THIS EVENING TO 4 AM PST FRIDAY... THIS HAZARDOUS WEATHER OUTLOOK IS FOR NORTHWEST CALIFORNIA. .DAY ONE...THIS AFTERNOON AND TONIGHT. A WIND ADVISORY IS CURRENTLY IN EFFECT. STRONG WIND GUSTS UP TO 45 MPH ARE POSSIBLE IN THE COASTAL PLAINS OF DEL NORTE COUNTY WITH GUSTS UP TO 55 MPH POSSIBLE ACROSS HIGHER...EXPOSED TERRAIN. WINDS WILL BE BREEZY FARTHER SOUTH. .DAYS TWO THROUGH SEVEN...FRIDAY THROUGH WEDNESDAY. MODERATE TO HEAVY RAIN AT TIMES WITH POTENTIAL FLOODING SUNDAY THROUGH TUESDAY. .SPOTTER INFORMATION STATEMENT... SPOTTER ACTIVATION IS NOT EXPECTED AT THIS TIME. CAZ002>004-076-182245- MENDOCINO COAST-NORTH COAST INTERIOR-UPPER TRINITY RIVER- MENDOCINO INTERIOR- 233 PM PST THU DEC 17 2015 THIS HAZARDOUS WEATHER OUTLOOK IS FOR NORTHWEST CALIFORNIA. .DAY ONE...THIS AFTERNOON AND TONIGHT. AN APPROACHING COLD FRONT WILL INCREASE SOUTH WINDS AND PRODUCE PERIODS OF MODERATE TO HEAVY RAIN TONIGHT. .DAYS TWO THROUGH SEVEN...FRIDAY THROUGH WEDNESDAY. WET WEATHER WILL CONTINUE AT TIMES THROUGH EARLY NEXT WEEK. .SPOTTER INFORMATION STATEMENT... SPOTTER ACTIVATION IS NOT EXPECTED AT THIS TIME.
In the hours before
Special weather statement, Dec 18, 1:27 AM PST, 0 minutes before
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE EUREKA
127 AM PST FRI DEC 18 2015
CAZ001-003-181015-
REDWOOD COAST CA-NORTH COAST INTERIOR CA-
127 AM PST FRI DEC 18 2015
...SIGNIFICANT WEATHER ADVISORY FOR NORTHWESTERN DEL NORTE COUNTY
UNTIL 215 AM PST...
AT 126 AM PST...DOPPLER RADAR WAS TRACKING A LINE OF STRONG
THUNDERSTORMS ALONG A LINE EXTENDING FROM 15 MILES SOUTHWEST OF JACK
MC NAMERA FIELD AIRPORT TO 30 MILES SOUTHWEST OF CRESCENT CITY
NORTH...AND MOVING NORTHEAST AT 35 MPH.
INTENSE RAIN AND WIND GUSTS OF 50 TO 55 MPH WILL BE POSSIBLE WITH
THESE STORMS.
LOCATIONS IMPACTED INCLUDE...
CRESCENT CITY...JEDEDIAH SMITH STATE PARK...JACK MC NAMERA FIELD
AIRPORT...CRESCENT CITY NORTH...SMITH RIVER...BERTSCH-OCEANVIEW AND
FT DICK.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
TORRENTIAL RAINFALL IS ALSO OCCURRING WITH THESE STORMS...AND MAY
LEAD TO FLASH FLOODING. DO NOT DRIVE YOUR VEHICLE THROUGH FLOODED
ROADWAYS.
&&
LAT...LON 4199 12403 4165 12396 4160 12410 4165 12413
4173 12416 4174 12417 4174 12418 4175 12419
4174 12420 4178 12426 4184 12422 4193 12420
4194 12420 4195 12421 4200 12421
TIME...MOT...LOC 0926Z 233DEG 39KT 4163 12447 4146 12465
BFGThe office that day
Everything else NWS Eureka, CA issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Dec 18, 2:30 AM PST | Hazardous Seas Warning | EKA | 6 hr | |
| Dec 18, 8:46 AM PST | Small Craft Advisory | EKA | 42 hr | |
| Dec 18, 3:20 PM PST | Winter Storm Watch | EKA | 17 hr |
Nearby
Special Weather Statements in California, 2015Every special weather statement in 2015
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.