Alert archive / California / Special Weather Statements in 2016

Special Weather Statement, NWS Eureka, CA

May 5, 2016Trinity County, California

NWS Eureka, CA issued this special weather statement at May 5, 2016, 1:16 PM PDT for Trinity County, California. It was in force for 44 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
May 5, 2016, 1:16 PM PDT (20:16 UTC)
Expired
May 5, 2016, 2:00 PM PDT
In force
44 min
Issued by
NWS Eureka, CA

County Trinity County, CA

The radar

The Eureka (Bunker Hill) radar (KBHX), 95 km from the middle of the area, began a volume at 20:19 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, 8.3 hours before the alert went out and 164 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 12:00Z on 2016-05-05Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 6 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Medford/Jackson, OR at 12:00Z on 2016-05-05The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -1 square meters per square second.193958Sfc1 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
6 J/kg
Mixed-layer CIN
-196 J/kg
Mixed-layer LCL
546 m above ground
0-6 km bulk shear
28 kt
0-1 km storm-relative helicity
-1 m²/s²
0-3 km storm-relative helicity
50 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

As transmitted.

172 
WWUS86 KEKA 052016
SPSEKA

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE EUREKA
116 PM PDT THU MAY 5 2016
 
CAZ004-052100-
UPPER TRINITY RIVER CA-
116 PM PDT THU MAY 5 2016

...SIGNIFICANT WEATHER ADVISORY FOR WEST CENTRAL TRINITY COUNTY UNTIL
200 PM PDT...

AT 115 PM PDT...DOPPLER RADAR WAS TRACKING A STRONG THUNDERSTORM NEAR
DENNY...OR 16 MILES EAST OF WILLOW CREEK...MOVING SOUTHEAST AT 3 MPH.

NICKEL SIZE HAIL...WINDS IN EXCESS OF 30 MPH AND HEAVY RAINFALL WILL
BE POSSIBLE WITH THIS STORM.

LOCATIONS IMPACTED INCLUDE...
DENNY.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

FREQUENT CLOUD TO GROUND LIGHTNING IS OCCURRING WITH THIS STORM.
LIGHTNING CAN STRIKE 10 MILES AWAY FROM A THUNDERSTORM. SEEK A SAFE
SHELTER INSIDE A BUILDING OR VEHICLE.

&&

LAT...LON 4094 12344 4101 12340 4107 12339 4092 12306
      4079 12325
TIME...MOT...LOC 2015Z 315DEG 5KT 4093 12332 

$$

RPA

The office that day

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

IssuedProductOfficeCountiesLasted
May 4, 5:31 PM PDTSpecial Weather StatementEKATrinity29 min
May 5, 1:39 PM PDTSpecial Weather StatementEKATrinity36 min
May 5, 1:56 PM PDTSevere Thunderstorm WarningEKATrinity34 min
May 5, 2:06 PM PDTSpecial Weather StatementEKATrinity39 min
May 5, 2:22 PM PDTSpecial Weather StatementEKATrinity38 min
May 5, 2:32 PM PDTSpecial Weather StatementEKAHumboldt43 min
May 5, 2:39 PM PDTSevere Thunderstorm WarningEKAHumboldt36 min
May 5, 3:28 PM PDTSpecial Weather StatementEKAHumboldt32 min

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.