Alert archive / California / Tornado Warnings in 2010

Tornado Warning 1, NWS Hanford, CA

January 18, 2010Fresno County, Madera County, California

NWS Hanford, CA issued this tornado warning at Jan 18, 2010, 3:24 PM PST for Fresno County, Madera County, California. It was in force for 19 min. 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 18, 2010, 3:24 PM PST (23:24 UTC)
Expired: Jan 18, 2010, 3:43 PM PST
In force: 19 min
Issued by: NWS Hanford, CA
Area: Storm-based polygon

Counties Fresno County, CA, Madera County, CA

The radar

The San Joaquin Valley radar (KHNX), 75 km from the middle of the area, began a volume at 23:28 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

Oakland, CA (KOAK), launched 12:00Z, 11.4 hours before the alert went out and 235 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: 777 m above ground
0-6 km bulk shear: 49 kt
0-1 km storm-relative helicity: 133 m²/s²
0-3 km storm-relative helicity: 132 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 tornado warning went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.

NWS Hanford, CA wrote its last area forecast discussion before this tornado warning went out at Jan 18, 2:25 PM PST, 59 minutes earlier.

Area forecast discussion, Jan 18, 2:25 PM PST, 59 minutes before

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Hazardous weather outlook, Jan 18, 4:51 AM PST, 10 hours 33 minutes before

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In the hours before

Local storm report, Jan 18, 2:38 PM PST, 46 minutes before

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Local storm report, Jan 18, 2:53 PM PST, 31 minutes before

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Local storm report, Jan 18, 2:55 PM PST, 29 minutes before

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Local storm report, Jan 18, 2:55 PM PST, 29 minutes before

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Special weather statement, Jan 18, 2:59 PM PST, 25 minutes before

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Special weather statement, Jan 18, 3:02 PM PST, 22 minutes before

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The office that day

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

Issued	Product	Office	Counties	Lasted
Jan 18, 12:28 PM PST	Severe Thunderstorm Warning	HNX	Fresno, Kern, Kings, Tulare	47 min
Jan 18, 1:39 PM PST	Areal Flood Advisory	HNX	Fresno, Kern, Kings, Madera, Mariposa, Merced and 1 more	3 hr
Jan 18, 1:45 PM PST	Special Weather Statement	HNX	Kern, Tulare	60 min
Jan 18, 2:59 PM PST	Special Weather Statement	HNX		46 min
Jan 18, 3:02 PM PST	Special Weather Statement	HNX	Fresno, Kings	73 min

Nearby

Tornado Warnings in California, 2010 Every tornado warning in 2010 Tornadoes in 2010

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.