Alert archive / California / Special Weather Statements in 2016
Special Weather Statement, NWS Eureka, CA
NWS Eureka, CA issued this special weather statement at Feb 19, 2016, 5:45 AM PST for Humboldt County, California. It was in force for 45 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
- Feb 19, 2016, 5:45 AM PST (13:45 UTC)
- Expired
- Feb 19, 2016, 6:30 AM PST
- In force
- 45 min
- Issued by
- NWS Eureka, CA
County Humboldt County, CA
The radar
The Eureka (Bunker Hill) radar (KBHX), 57 km from the middle of the area, began a volume at 13:48 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, 1.8 hours before the alert went out and 192 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
- 1093 m above ground
- 0-6 km bulk shear
- 76 kt
- 0-1 km storm-relative helicity
- 197 m²/s²
- 0-3 km storm-relative helicity
- 408 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
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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 Feb 19, 5:08 AM PST, 37 minutes earlier.
Area forecast discussion, Feb 19, 5:08 AM PST, 37 minutes before
AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE EUREKA CA
508 AM PST FRI FEB 19 2016
.SYNOPSIS...A VIGOROUS FRONT WILL MOVE THROUGH THE REGION TODAY
PRODUCING A PERIOD OF HEAVY RAIN AND STRONG GUSTY WINDS. HIGH
PRESSURE WILL BUILD TONIGHT AND MAINTAIN DRY WEATHER THROUGH
SATURDAY EVENING. A WEAKER FRONT WILL BRING A CHANCE OF LIGHT
RAIN ON SUNDAY.
&&
.DISCUSSION...A VIGOROUS SHORT-WAVE OFFSHORE WILL IMPACT
NORTHWEST CALIFORNIA WITH A PERIOD OF HEAVY RAIN AND STRONG GUSTY
WINDS THROUGH ABOUT MIDDAY TODAY. GRADIENT WINDS HAVE BEEN
STEADILY INCREASING THROUGH NIGHT WITH GUSTS IN THE LOWER TO MID
40S MAINLY OVER THE HIGHER TERRAIN ABOVE 2000 FEET. WINDS WILL
CONTINUE TO RAMP UP THROUGH DAYBREAK...WITH THE STRONGEST WINDS
EXPECTED JUST BEFORE OR DURING FRONTAL PASSAGE BY MID MORNING.
NUMEROUS LIGHTNING STRIKES HAVE BEEN DETECTED BOTH AHEAD OF AND
ALONG THE FRONT EARLY THIS MORNING...OVER NW CALIFORNIA COASTAL
WATERS. WITH THE NEGATIVELY TILTED DIFFLUENT TROUGH ALOFT SWINGING
THROUGH THIS MORNING...EXPECT AT LEAST ISOLATED THUNDERSTORMS
BY DAYBREAK AS THE LINE MOVES ONSHORE. WITH 925MB-850MB WINDS OF
60-70KT...THERE IS DEFINITELY THE POTENTIAL FOR GUSTS TO 50-60 MPH
DOWN TO MEAN SEA LEVEL ALONG THE COAST. THE THREAT FOR THUNDERSTORMS
SHOULD END BY THIS AFTERNOON AFTER THE SHORT-WAVE EXITS TO OUR NE.
MOIST ONSHORE FLOW BEHIND THE FRONTAL BOUNDARY WILL MAINTAIN
SHOWER ACTIVITY ACROSS THE AREA THROUGH THE AFTERNOON HOURS
THOUGH. SNOW LEVELS WITH THE INCOMING STORM SHOULD REMAIN ABOVE
ALL THE MAJOR PASSES OF NW CALIFORNIA...ABOVE 4KFT...DURING THE
PEAK IN PRECIPITATION. THUS WILL HOLD OFF ON HOISTING WINTER
WEATHER HEADLINES. ELEVATIONS ABOVE 4KFT WILL DEFINITELY SEE
SNOW...PERHAPS UP TO A FOOT OF NEW SNOW BY LATE AFTERNOON.
OTHERWISE WE ARE LOOKING AT MOSTLY A COLD RAIN AND PERHAPS
ISOLATED HAIL WITH EMBEDDED THUNDERSTORMS. FOR THE MOST PART
EXPECT ABOUT HALF AN INCH TO AN INCH OF RAIN.
LINGERING SHOWERS THIS EVENING WILL MOST LIKELY END LATER TONIGHT AS
A SURFACE RIDGE BUILDS CREATING LIGHT OFFSHORE FLOW. OVERNIGHT
TEMPERATURES SHOULD COOL DOWN CONSIDERABLY WITH PARTIALLY CLEARING
SKIES AND LIGHTER WINDS. LINGERING MOIST AIR WILL PRODUCE POCKETS
OF THICK VALLEY FOG OR LOW CLOUD WHICH SHOULD OFFSET THE RATE OF
COOLING THROUGH THE NIGHT.
EVEN THOUGH A RIDGE ALOFT WILL BUILD ON SATURDAY...HIGH CLOUDS
ASSOCIATED WITH A STORM CROSSING 160W WILL SPREAD OVER THE REGION
THROUGH THE DAY ON SATURDAY. WE STILL EXPECT IT TO BE DRY ON SAT
INTO SAT NIGHT. THE MODELS CONTINUE TO INDICATE THE TAIL END OF
THE FRONT WITH THIS STORM TO BRUSH NW CALIFORNIA WITH SOME LIGHT
RAIN ON SUNDAY. THE BRUNT OF THE RAIN WITH THE FRONT WILL BE TO
OUR NORTH IN OREGON AND WASHINGTON. SNOW LEVELS SHOULD REMAIN
FAIRLY HIGH WHILE WINDS REMAIN ONLY LIGHT TO MODERATE.
MON THROUGH FRI...LARGE SCALE RIDGING WITH ABOVE NORMAL DAYTIME
TEMPERATURES WILL DOMINATE THROUGH MOST OF NEXT WEEK. A COUPLE OF
FRONTAL SYSTEMS WILL APPROACH THE WEST COAST AND MAY BRING SOME
LIGHT RAIN TO NW CALIFORNIA. THE FIRST ONE IS EXPECTED TO APPROACH
TUE OR TUE NIGHT. THE OPERATIONAL GFS...EMCWF AND GEFS INDICATE
THIS FRONT DAMPENING OUT CONSIDERABLY BEFORE REACHING THE NORTHERN
CALIFORNIA COAST. CONFIDENCE IS NOT HIGH WE ARE GOING TO GET ANY
RAIN AT ALL WITH THIS FRONT. THEREFORE WILL CONTINUE TO INDICATE
MINIMAL RAIN PROBABILITIES. THE FRONT EXPECTED FRIDAY APPEARS TO
BE MORE ENERGETIC WITH STRONGER DYNAMICS AND UPPER LEVEL
SUPPORT. LONG WAVE RIDGING WILL MOST LIKELY PERSIST OVER THE WEST
COAST THROUGH THE END OF THE WEEK...THUS WILL STAY CLOSE TO
CLIMATOLOGY OR SLIGHTLY ABOVE NEAR THE ORCA BORDER. OTHER THAN THE
ABOVE NORMAL HIGH TEMPERATURES FOR THE LAST WEEK OF FEBRUARY AND
AN OCCASIONAL THREAT FOR SNEAKER WAVES EXPECT A QUITE WEEK
WEATHERWISE.
&&
.AVIATION... CEILINGS WILL CONTINUE TO COME DOWN THIS MORNING AS
A COLD FRONT APPROACHES THE AREA. WELL ORGANIZED LINE OF HEAVY
SHOWERS AND THUNDERSTORMS SHOULD MAKE IT ONSHORE THE REDWOOD COAST
WITHIN THE NEXT HOUR OR TWO. HAVE INCLUDED VCTS AT BOTH KCEC AND
KACV. WILL LIKELY NEED TO BUMP THAT UP TO PREVAILING IN A TAF
UPDATE. GRADIENT WIND GUSTS TO 40 KTS ARE LIKELY AT KCEC AND CLOSE
TO 30 KT AT KACV. GUSTS IN THUNDERSTORMS MY APPROACH 50 KTS AS
STRONGER LOW-LEVEL WINDS MIX DOWN. RAINS WILL INCREASE IN
INTENSITY AT KUKI THRU THE EARLY MORNING HOURS. CONDITIONS ARE
EXPECTED TO RAPIDLY IMPROVE ACROSS THE AREA BY AFTERNOON. /SEC
&&
.PREVIOUS MARINE...STRONG LINE OF THUNDERSTORMS CONTINUES TO MOVE
RAPIDLY ACROSS THE N 2/3 OF THE COASTAL WATERS. ISSUED A SPECIAL
MARINE WARNING FOR POTENTIAL WIND GUSTS OVER 50 KTS ALONG WITH
HAIL. OUTSIDE OF THUNDERSTORMS...WINDS WILL OCCASIONALLY GUST TO
NEAR 50 KT...ESPECIALLY OVER THE N OFFSHORE WATERS. STEEP...SHORT
PERIOD SEAS WILL RAPIDLY RAMP UP AS A RESULT. WINDS AND SHORT
PERIOD SEAS WILL RAPIDLY SUBSIDE THIS AFTERNOON AS THE GRADIENT
RELAXES. W SWELL OF 12 TO 14 FT AT 13 SECONDS WILL CONTINUE THRU
TONIGHT...THEN SLOWLY SUBSIDE THRU THE WEEKEND. A NEW BATCH OF W
SWELL WILL ARRIVE TOWARD THE MIDDLE OF NEXT WEEK WITH INITIAL
PERIODS OF 20 TO 22 SECONDS. /SEC
&&
.EKA WATCHES/WARNINGS/ADVISORIES...
CA...
WIND ADVISORY UNTIL NOON PST TODAY FOR CAZ001-003.
NORTHWEST CALIFORNIA COASTAL WATERS...
SMALL CRAFT ADVISORY UNTIL 3 AM PST EARLY THIS MORNING FOR
PZZ455.
GALE WARNING UNTIL 9 AM PST THIS MORNING FOR PZZ455.
GALE WARNING UNTIL NOON PST TODAY FOR PZZ450-470.
GALE WARNING UNTIL 9 AM PST THIS MORNING 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/NWSEUREKA
FOR FORECAST ZONE INFORMATION
SEE FORECAST ZONE MAP ONLINE:
HTTP://WWW.WEATHER.GOV/EUREKA/ZONEMAP.PNGHazardous weather outlook, Feb 19, 4:57 AM PST, 48 minutes before
HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE EUREKA CA 457 AM PST FRI FEB 19 2016 CAZ001-201300- REDWOOD COAST- 457 AM PST FRI FEB 19 2016 ...WIND ADVISORY IN EFFECT UNTIL NOON PST TODAY... THIS HAZARDOUS WEATHER OUTLOOK IS FOR NORTHWEST CALIFORNIA. .DAY ONE...TODAY AND TONIGHT. A WIND ADVISORY IS CURRENTLY IN EFFECT TIL NOON TODAY. SOUTHERLY WIND GUSTS UP TO 55 MPH THIS MORNING. ISOLATED THUNDERSTORMS AND HAIL ARE ALSO EXPECTED THIS MORNING. .DAYS TWO THROUGH SEVEN...SATURDAY THROUGH THURSDAY. NO HAZARDOUS WEATHER IS EXPECTED AT THIS TIME. .SPOTTER INFORMATION STATEMENT... SPOTTER ACTIVATION IS NOT EXPECTED AT THIS TIME. CAZ002-201300- MENDOCINO COAST- 457 AM PST FRI FEB 19 2016 THIS HAZARDOUS WEATHER OUTLOOK IS FOR NORTHWEST CALIFORNIA. .DAY ONE...TODAY AND TONIGHT. NO HAZARDOUS WEATHER IS EXPECTED AT THIS TIME. .DAYS TWO THROUGH SEVEN...SATURDAY THROUGH THURSDAY. NO HAZARDOUS WEATHER IS EXPECTED AT THIS TIME. .SPOTTER INFORMATION STATEMENT... SPOTTER ACTIVATION IS NOT EXPECTED AT THIS TIME. CAZ003-201300- NORTH COAST INTERIOR- 457 AM PST FRI FEB 19 2016 ...WIND ADVISORY IN EFFECT UNTIL NOON PST TODAY... THIS HAZARDOUS WEATHER OUTLOOK IS FOR NORTHWEST CALIFORNIA. .DAY ONE...TODAY AND TONIGHT. A WIND ADVISORY IS CURRENTLY IN EFFECT TIL NOON. SOUTHERLY WIND GUSTS UP TO 55 MPH THIS MORNING. ISOLATED THUNDERSTORMS AND HAIL ARE ALSO EXPECTED THIS MORNING. .DAYS TWO THROUGH SEVEN...SATURDAY THROUGH THURSDAY. NO HAZARDOUS WEATHER IS EXPECTED AT THIS TIME. .SPOTTER INFORMATION STATEMENT... SPOTTER ACTIVATION IS NOT EXPECTED AT THIS TIME. CAZ004-076-201300- UPPER TRINITY RIVER-MENDOCINO INTERIOR- 457 AM PST FRI FEB 19 2016 THIS HAZARDOUS WEATHER OUTLOOK IS FOR NORTHWEST CALIFORNIA. .DAY ONE...TODAY AND TONIGHT. NO HAZARDOUS WEATHER IS EXPECTED AT THIS TIME. .DAYS TWO THROUGH SEVEN...SATURDAY THROUGH THURSDAY. NO HAZARDOUS WEATHER IS EXPECTED AT THIS TIME. .SPOTTER INFORMATION STATEMENT... SPOTTER ACTIVATION IS NOT EXPECTED AT THIS TIME.
In the hours before
Special weather statement, Feb 19, 5:45 AM PST, 0 minutes before
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE EUREKA
545 AM PST FRI FEB 19 2016
CAZ001-191430-
REDWOOD COAST CA-
545 AM PST FRI FEB 19 2016
...SIGNIFICANT WEATHER ADVISORY FOR NORTHWESTERN HUMBOLDT AND
SOUTHWESTERN DEL NORTE COUNTIES UNTIL 630 AM PST...
AT 539 AM PST...DOPPLER RADAR WAS TRACKING A LINE OF STRONG
THUNDERSTORMS ALONG A LINE EXTENDING FROM 33 MILES WEST OF ORICK TO
24 MILES WEST OF PETROLIA...AND MOVING EAST AT 35 MPH.
WIND GUSTS UP TO 50 MPH WILL BE POSSIBLE WITH THIS LINE OF STORMS.
LOCATIONS IMPACTED INCLUDE...EUREKA...ARCATA...CRESCENT
CITY...ORICK...KLAMATH...TRINIDAD...MCKINLEYVILLE...FERNDALE...PINE
HILLS...CAPETOWN...SAMOA...CUTTEN...FIELDBROOK...HUMBOLDT HILL AND
BAYVIEW.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
HEAVY RAINFALL IS ALSO OCCURRING WITH THESE STORMS...AND MAY LEAD TO
MINOR FLOODING. DO NOT DRIVE YOUR VEHICLE THROUGH FLOODED ROADWAYS.
FREQUENT CLOUD TO GROUND LIGHTNING IS OCCURRING WITH THESE STORMS.
LIGHTNING CAN STRIKE 15 MILES AWAY FROM A THUNDERSTORM. SEEK A SAFE
SHELTER INSIDE A BUILDING OR VEHICLE.
&&
LAT...LON 4068 12430 4075 12423 4071 12421 4081 12416
4081 12417 4076 12422 4099 12412 4113 12416
4129 12409 4155 12408 4173 12416 4178 12426
4186 12421 4186 12419 4138 12401 4089 12402
4048 12435 4021 12430 4026 12436 4045 12441
TIME...MOT...LOC 1339Z 251DEG 31KT 4140 12469 4117 12471 4102 12472
4086 12463 4068 12465 4053 12469 4031 12475 4005 12473The office that day
Everything else NWS Eureka, CA issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Feb 19, 4:06 AM PST | Special Marine Warning | EKA | 84 min | |
| Feb 19, 5:29 AM PST | Special Marine Warning | EKA | 61 min | |
| Feb 19, 6:25 AM PST | Special Weather Statement | EKA | Humboldt | 35 min |
| Feb 19, 6:59 AM PST | Special Weather Statement | EKA | 46 min | |
| Feb 19, 8:04 AM PST | Special Weather Statement | EKA | Del Norte | 26 min |
| Feb 19, 9:05 AM PST | Small Craft Advisory | EKA | 55 hr | |
| Feb 19, 9:05 AM PST | Hazardous Seas Warning | EKA | 3 hr | |
| Feb 19, 2:16 PM PST | Hazardous Seas Warning | EKA | 7 hr |
Nearby
Special Weather Statements in California, 2016Every special weather statement in 2016
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.