Alert archive / California / Severe Thunderstorm Warnings in 2024

Severe Thunderstorm Warning 5, NWS San Diego, CA

July 14, 2024Riverside County, California

NWS San Diego, CA issued this severe thunderstorm warning at Jul 14, 2024, 1:10 PM PDT for Riverside County, California. It was in force for 50 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: Jul 14, 2024, 1:10 PM PDT (20:10 UTC)
Expired: Jul 14, 2024, 2:00 PM PDT
In force: 50 min
Issued by: NWS San Diego, CA
Area: Storm-based polygon
Hail: 1.0 in
Wind: 60.0 mph

County Riverside County, CA

The radar

The San Diego radar (KNKX), 134 km from the middle of the area, began a volume at 20:14 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 12:00Z, 8.2 hours before the alert went out and 154 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: 1253 m above ground
0-6 km bulk shear: 20 kt
0-1 km storm-relative helicity: 33 m²/s²
0-3 km storm-relative helicity: 29 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 severe thunderstorm 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 severe thunderstorm warning went out at Jul 14, 9:34 AM PDT, 3 hours 36 minutes earlier.

Area forecast discussion, Jul 14, 9:34 AM PDT, 3 hours 36 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
Jul 14, 1:19 PM PDT	Special Weather Statement	SGX	San Bernardino	41 min
Jul 14, 1:27 PM PDT	Severe Thunderstorm Warning	SGX	San Diego	48 min
Jul 14, 1:40 PM PDT	Areal Flood Advisory	SGX	Riverside	2 hr
Jul 14, 1:53 PM PDT	Areal Flood Advisory	SGX	San Diego	2 hr
Jul 14, 2:06 PM PDT	Beach Hazards Statement	SGX	Orange, San Diego	4 days
Jul 14, 2:07 PM PDT	Flash Flood Warning Considerable damage threat	SGX	San Diego	3 hr
Jul 14, 2:10 PM PDT	Severe Thunderstorm Warning	SGX	Riverside	50 min
Jul 14, 2:21 PM PDT	Severe Thunderstorm Warning	SGX	Riverside, San Diego	39 min
Jul 14, 2:31 PM PDT	Special Weather Statement	SGX	San Diego	44 min
Jul 14, 2:40 PM PDT	Areal Flood Advisory	SGX	San Diego	2 hr
Jul 14, 2:51 PM PDT	Flash Flood Warning Considerable damage threat	SGX	Riverside	3 hr
Jul 14, 2:58 PM PDT	Severe Thunderstorm Warning	SGX	Riverside	34 min
Jul 14, 3:40 PM PDT	Special Weather Statement	SGX		50 min
Jul 14, 4:08 PM PDT	Areal Flood Advisory	SGX	San Bernardino	119 min
Jul 14, 4:26 PM PDT	Special Weather Statement	SGX		49 min
Jul 14, 4:41 PM PDT	Flash Flood Warning Considerable damage threat	SGX	San Bernardino	3 hr

Nearby

Severe Thunderstorm Warnings in California, 2024 Every severe thunderstorm warning in 2024

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.