Alert archive / California / Dust Storm Warnings in 2011

Dust Storm Warning 1, NWS San Diego, CA

August 27, 2011Riverside County, San Diego County, California

NWS San Diego, CA issued this dust storm warning at Aug 27, 2011, 11:30 PM PDT for Riverside County, San Diego County, California. It took effect at Aug 28, 2011, 12:00 AM PDT. 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: Aug 27, 2011, 11:30 PM PDT (06:30 UTC)
In effect from: Aug 28, 2011, 12:00 AM PDT
Expired: Aug 28, 2011, 2:38 AM PDT
In force: 3 hr
Issued by: NWS San Diego, CA

Counties Riverside County, CA, San Diego County, CA

The radar

The San Diego radar (KNKX), 80 km from the middle of the area, began a volume at 06:29 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

San Diego, CA (KNKX), launched 00:00Z, 6.5 hours before the alert went out and 100 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: 2553 m above ground
0-6 km bulk shear: 14 kt
0-1 km storm-relative helicity: -54 m²/s²
0-3 km storm-relative helicity: 18 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.1

Open this sounding in Storm Lab

What forecasters said that day

The local office's own words before this dust storm warning went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.

NWS San Diego, CA wrote its last area forecast discussion before this dust storm warning went out at Aug 27, 8:00 PM PDT, 3 hours 30 minutes earlier.

Area forecast discussion, Aug 27, 8:00 PM PDT, 3 hours 30 minutes before

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Hazardous weather outlook, Aug 27, 4:00 PM PDT, 7 hours 30 minutes before

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In the hours before

Local storm report, Aug 27, 8:25 PM PDT, 3 hours 5 minutes before

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Local storm report, Aug 27, 8:30 PM PDT, 3 hours before

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Local storm report, Aug 27, 8:31 PM PDT, 2 hours 59 minutes before

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Local storm report, Aug 27, 8:55 PM PDT, 2 hours 35 minutes before

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Local storm report, Aug 27, 9:49 PM PDT, 1 hour 41 minutes before

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The office that day

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

Issued	Product	Office	Counties	Lasted
Aug 28, 11:29 AM PDT	Flash Flood Watch	SGX	Riverside, San Bernardino, San Diego	7 hr
Aug 28, 1:39 PM PDT	Flash Flood Warning	SGX	Riverside, San Diego	81 min
Aug 28, 1:46 PM PDT	Severe Thunderstorm Warning	SGX	San Diego	29 min
Aug 28, 2:14 PM PDT	Severe Thunderstorm Warning	SGX	San Diego	31 min
Aug 28, 3:01 PM PDT	Flash Flood Warning	SGX	San Bernardino	89 min
Aug 28, 3:11 PM PDT	Severe Thunderstorm Warning	SGX	San Diego	34 min
Aug 28, 3:33 PM PDT	Flash Flood Warning	SGX	San Bernardino	73 min
Aug 28, 3:47 PM PDT	Flash Flood Warning	SGX	Riverside, San Bernardino	66 min
Aug 28, 4:32 PM PDT	Areal Flood Advisory	SGX	San Bernardino	79 min

Nearby

Dust Storm Warnings in California, 2011 Every dust storm warning in 2011

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.