Alert archive / California / Special Weather Statements in 2016

Special Weather Statement, NWS Eureka, CA

April 13, 2016Del Norte County, California

NWS Eureka, CA issued this special weather statement at Apr 13, 2016, 6:21 PM PDT for Del Norte County, California. It was in force for 39 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
Apr 13, 2016, 6:21 PM PDT (01:21 UTC)
Expired
Apr 13, 2016, 7:00 PM PDT
In force
39 min
Issued by
NWS Eureka, CA

County Del Norte County, CA

The radar

The Medford radar (KMAX), 104 km from the middle of the area, began a volume at 01:24 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, 1.4 hours before the alert went out and 114 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.

Skew-T log-pSkew-T log-p diagram, Medford/Jackson, OR at 00:00Z on 2016-04-14Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 8 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Medford/Jackson, OR at 00:00Z on 2016-04-14The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 51 square meters per square second.1939587897117136Sfc1 km3 km6 km9 kmRMLM
The wind turning with height, colored by layer: ground to 1 km, 1 to 3 km, 3 to 6 km, 6 to 10 km.
Mixed-layer CAPE
8 J/kg
Mixed-layer CIN
-3 J/kg
Mixed-layer LCL
2836 m above ground
0-6 km bulk shear
58 kt
0-1 km storm-relative helicity
51 m²/s²
0-3 km storm-relative helicity
144 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

As transmitted.

996 
WWUS86 KEKA 140121
SPSEKA

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE EUREKA
621 PM PDT WED APR 13 2016
 
CAZ001-003-140200-
REDWOOD COAST CA-NORTH COAST INTERIOR CA-
621 PM PDT WED APR 13 2016

...SIGNIFICANT WEATHER ADVISORY FOR NORTHERN HUMBOLDT AND DEL NORTE
COUNTIES UNTIL 700 PM PDT...

AT 621 PM PDT...DOPPLER RADAR WAS TRACKING STRONG THUNDERSTORMS ALONG
A LINE EXTENDING FROM SMITH RIVER TO 12 MILES WEST OF ORICK. MOVEMENT
WAS EAST AT 30 MPH.

HALF INCH HAIL AND WIND GUSTS UP TO 50 MPH WILL BE POSSIBLE WITH
THESE STORMS.

LOCATIONS IMPACTED INCLUDE...
CRESCENT CITY...KLAMATH...JEDEDIAH SMITH STATE PARK...JACK MC NAMERA
FIELD AIRPORT...CRESCENT CITY NORTH...GASQUET...SMITH RIVER...
BERTSCH-OCEANVIEW...FT DICK AND KLAMATH GLEN.

LAT...LON 4199 12363 4186 12365 4183 12370 4180 12367
      4177 12369 4173 12366 4164 12368 4160 12372
      4159 12368 4147 12370 4146 12407 4155 12408
      4154 12405 4157 12410 4172 12415 4178 12426
      4193 12420 4193 12419 4200 12420
TIME...MOT...LOC 0121Z 265DEG 27KT 4194 12417 4134 12429 

$$

The office that day

Everything else NWS Eureka, CA issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Apr 13, 5:33 PM PDTSpecial Marine WarningEKA42 min
Apr 13, 5:56 PM PDTSpecial Marine WarningEKA49 min
Apr 13, 6:15 PM PDTSpecial Marine WarningEKA30 min
Apr 13, 6:43 PM PDTSpecial Weather StatementEKAHumboldt47 min
Apr 13, 6:47 PM PDTSpecial Marine WarningEKA28 min
Apr 13, 7:30 PM PDTSpecial Weather StatementEKAHumboldt45 min
Apr 13, 8:16 PM PDTSpecial Weather StatementEKA29 min
Apr 13, 9:02 PM PDTSmall Craft AdvisoryEKA42 hr
Apr 14, 8:38 AM PDTHigh Surf AdvisoryEKA12 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.