Alert archive / California / Special Weather Statements in 2016

Special Weather Statement, NWS Sacramento, CA

May 5, 2016Shasta County, California

NWS Sacramento, CA issued this special weather statement at May 5, 2016, 4:49 PM PDT for Shasta County, California. It was in force for 56 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, 4:49 PM PDT (23:49 UTC)
Expired: May 5, 2016, 5:45 PM PDT
In force: 56 min
Issued by: NWS Sacramento, CA

County Shasta County, CA

The radar

The Eureka (Bunker Hill) radar (KBHX), 134 km from the middle of the area, began a volume at 23:49 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, 11.8 hours before the alert went out and 196 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-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

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.

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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 Sacramento, CA wrote its last area forecast discussion before this special weather statement went out at May 5, 1:35 PM PDT, 3 hours 14 minutes earlier.

Area forecast discussion, May 5, 1:35 PM PDT, 3 hours 14 minutes before

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In the hours before

Special weather statement, May 5, 11:38 AM PDT, 5 hours 11 minutes before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE SACRAMENTO CA
1138 AM PDT THU MAY 5 2016

CAZ017-051900-
SOUTHERN SACRAMENTO VALLEY-
1138 AM PDT THU MAY 5 2016

...A STRONG THUNDERSTORM WILL AFFECT CENTRAL YOLO COUNTY...

AT 1138 AM PDT...A STRONG THUNDERSTORM WAS LOCATED OVER WOODLAND...
MOVING NORTHWEST AT 20 MPH.

DIME SIZE HAIL AND HEAVY RAINFALL IS POSSIBLE WITH THIS STORM. HAIL
MAY ACCUMULATE CAUSING HAZARDOUS TRAVEL.

LOCATIONS IMPACTED INCLUDE...
WOODLAND...CAPAY...MADISON...YOLO...ESPARTO AND YOLO FLIERS CLUB.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

VERY HEAVY RAINFALL MAY LEAD TO LOCALIZED FLOODING. DO NOT DRIVE
YOUR VEHICLE THROUGH FLOODED ROADWAYS.

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 3876 12175 3864 12176 3858 12209 3880 12204
TIME...MOT...LOC 1837Z 113DEG 17KT 3867 12182

CEO

Local storm report, May 5, 12:52 PM PDT, 3 hours 57 minutes before

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Local storm report, May 5, 1:50 PM PDT, 2 hours 59 minutes before

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Special weather statement, May 5, 3:19 PM PDT, 1 hour 30 minutes before

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Local storm report, May 5, 4:23 PM PDT, 26 minutes before

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Special weather statement, May 5, 4:49 PM PDT, 0 minutes before

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The office that day

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

Issued	Product	Office	Counties	Lasted
May 4, 5:33 PM PDT	Special Weather Statement	STO	Glenn	57 min
May 4, 5:49 PM PDT	Severe Thunderstorm Warning	STO	Glenn, Tehama	42 min
May 4, 6:51 PM PDT	Severe Thunderstorm Warning	STO	Colusa, Glenn	24 min
May 4, 9:02 PM PDT	Special Weather Statement	STO	Butte	43 min
May 4, 9:49 PM PDT	Special Weather Statement	STO	Butte	41 min
May 4, 10:10 PM PDT	Severe Thunderstorm Warning	STO	Butte, Glenn, Tehama	8 min
May 4, 10:12 PM PDT	Severe Thunderstorm Warning	STO	Butte, Glenn, Tehama	33 min
May 5, 12:36 AM PDT	Special Weather Statement	STO	Tehama	39 min
May 5, 10:39 AM PDT	Special Weather Statement	STO	Yolo	36 min
May 5, 10:55 AM PDT	Special Weather Statement	STO	Colusa	50 min
May 5, 11:37 AM PDT	Special Weather Statement	STO	Sutter	38 min
May 5, 11:38 AM PDT	Special Weather Statement	STO	Yolo	22 min
May 5, 12:48 PM PDT	Severe Thunderstorm Warning	STO	Sutter, Yuba	42 min
May 5, 3:19 PM PDT	Special Weather Statement	STO	Shasta	56 min

Nearby

Special Weather Statements in California, 2016 Every 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.