Alert archive / California / Flash Flood Warnings in 2006

Flash Flood Warning 1, NWS Sacramento, CA

January 1, 2006Sacramento County, California

NWS Sacramento, CA issued this flash flood warning at Jan 1, 2006, 4:21 PM PST for Sacramento County, California. It was in force for 3 hr. No storm report in the archive falls inside the area while it was in force.

The area

The counties it named.

The facts

Issued: Jan 1, 2006, 4:21 PM PST (00:21 UTC)
Expired: Jan 1, 2006, 7:15 PM PST
In force: 3 hr
Issued by: NWS Sacramento, CA
Area: Counties, with a storm outline in the text

County Sacramento County, CA

The radar

The Sacramento radar (KDAX), 30 km from the middle of the area, began a volume at 00:22 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

Vandenberg AFB, CA (KVBG), launched 00:00Z, 0.4 hours before the alert went out and 420 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: 0 J/kg
Mixed-layer CIN: No buoyant parcel
Mixed-layer LCL: 517 m above ground
0-6 km bulk shear: 74 kt
0-1 km storm-relative helicity: 423 m²/s²
0-3 km storm-relative helicity: 532 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

What forecasters said that day

The local office's own words before this flash flood warning 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 flash flood warning went out at Jan 1, 4:00 PM PST, 21 minutes earlier.

Area forecast discussion, Jan 1, 4:00 PM PST, 21 minutes before

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Hazardous weather outlook, Jan 1, 8:30 AM PST, 7 hours 51 minutes before

HAZARDOUS WEATHER OUTLOOK...UPDATED...
NATIONAL WEATHER SERVICE SACRAMENTO CA
830 AM PST SUN JAN 1 2006

CAZ013>019-063-064-066>069-021500-
SHASTA LAKE AREA/NORTHERN SHASTA COUNTY-
BURNEY BASIN/EASTERN SHASTA COUNTY-NORTHERN SACRAMENTO VALLEY-
CENTRAL SACRAMENTO VALLEY-SOUTHERN SACRAMENTO VALLEY-
CARQUINEZ STRAIT AND DELTA-NORTHERN SAN JOAQUIN VALLEY-
MOUNTAINS SOUTHWESTERN SHASTA TO NORTHERN LAKE COUNTIES-
CLEAR LAKE/SOUTHERN LAKE COUNTY-MOTHERLODE-
EAST FOOTHILLS/NORTH SACRAMENTO VALLEY-
WESTERN PLUMAS COUNTY/LASSEN PARK-WEST SLOPE NORTHERN SIERRA NEVADA-
830 AM PST SUN JAN 1 2006

THIS HAZARDOUS WEATHER OUTLOOK IS FOR INTERIOR NORTHERN CALIFORNIA.

.DAY ONE...TODAY

ANOTHER PACIFIC STORM WILL MOVE ACROSS THE INTERIOR OF NORTHERN
CALIFORNIA TODAY AND TONIGHT...BRINGING HEAVY PRECIPITATION AND
STRONG WINDS. THIS STORM WILL BE A LITTLE COLDER WITH LOWER SNOW
LEVELS OVER THE INTERIOR MOUNTAINS. A STRONG COLD FRONT WILL PUSH
INLAND BY MIDDAY POSSIBLE CAUSING SOME THUNDERSTORMS OVER THE
COASTAL MOUNTAINS AND NORTHERN SACRAMENTO VALLEY. THE PERIODS OF
HEAVY RAIN WILL AGAIN CAUSE RISES ON SMALL RIVERS AND STREAMS.

* WINTER STORM WARNING.......SEE WWUS46 KSTO - WSWSTO FOR DETAILS *

* FLOOD STATEMENT............SEE WGUS86 KSTO - FLSSTO FOR DETAILS *

* WIND ADVISORY..............SEE WGUS76 KSTO - NPWSTO FOR DETAILS *

.DAYS TWO THROUGH SEVEN... MONDAY THROUGH SATURDAY

EXPECT MORE UNSETTLED MONDAY AND TUESDAY...FOLLOWED BY A DRYING
TREND.

.SPOTTER INFORMATION STATEMENT...

WEATHER SPOTTERS ARE ENCOURAGED TO REPORT SIGNIFICANT WEATHER
CONDITIONS TO THEIR LOCAL NATIONAL WEATHER SERVICE OFFICE.

THE LATEST WEATHER INFORMATION IS AVAILABLE ON THE INTERNET AT
(LOWER CASE): HTTP://WWW.WRH.NOAA.GOV/STO

/KJ

The office that day

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

Issued	Product	Office	Counties	Lasted
Jan 2, 4:48 AM PST	Heavy Snow Warning	STO		19 hr
Jan 2, 4:48 AM PST	Snow Advisory	STO		13 hr
Jan 2, 6:00 AM PST	Flash Flood Warning	STO	Sacramento	6 hr
Jan 2, 11:30 AM PST	Flash Flood Warning	STO	Sacramento	7 hr
Jan 2, 12:01 PM PST	Flash Flood Warning	STO	Sacramento	18 hr

Nearby

Flash Flood Warnings in California, 2006 Every flash flood warning in 2006

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.