Alert archive / California / Severe Thunderstorm Warnings in 2025

Severe Thunderstorm Warning 59, NWS Medford, OR

July 31, 2025Siskiyou County, California

NWS Medford, OR issued this severe thunderstorm warning at Jul 31, 2025, 5:58 PM PDT for Siskiyou County, California. It was in force for 32 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 31, 2025, 5:58 PM PDT (00:58 UTC)
Expired: Jul 31, 2025, 6:30 PM PDT
In force: 32 min
Issued by: NWS Medford, OR
Area: Storm-based polygon
Hail: 1.25 in
Wind: 60.0 mph

County Siskiyou County, CA

The radar

The Medford radar (KMAX), 56 km from the middle of the area, began a volume at 01:01 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 00:00Z, 1.0 hours before the alert went out and 89 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: 689 J/kg
Mixed-layer CIN: -15 J/kg
Mixed-layer LCL: 2565 m above ground
0-6 km bulk shear: 8 kt
0-1 km storm-relative helicity: -15 m²/s²
0-3 km storm-relative helicity: 1 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 Medford, OR wrote its last area forecast discussion before this severe thunderstorm warning went out at Jul 31, 2:37 PM PDT, 3 hours 21 minutes earlier.

Area forecast discussion, Jul 31, 2:37 PM PDT, 3 hours 21 minutes before

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In the hours before

Special weather statement, Jul 31, 4:13 PM PDT, 1 hour 45 minutes before

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Special weather statement, Jul 31, 4:40 PM PDT, 1 hour 18 minutes before

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Special weather statement, Jul 31, 4:51 PM PDT, 1 hour 7 minutes before

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Special weather statement, Jul 31, 5:22 PM PDT, 36 minutes before

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Special weather statement, Jul 31, 5:36 PM PDT, 22 minutes before

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Special weather statement, Jul 31, 5:41 PM PDT, 17 minutes before

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<body>
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      <div class="status" id="status">Temporary Notice</div>
      <h1 id="headline">This service is currently unavailable.</h1>
      <p id="message1">
        The site you requested is temporarily down for maintenance or an unexpected outage.
      </p>
      <p id="message2">
        Please try again in a few minutes.
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      <p class="small" id="detail">
        If you are an administrator, restore upstream service and remove the redirect/fallback rule when normal operations resume.
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The office that day

Everything else NWS Medford, OR issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Jul 31, 5:22 PM PDT	Special Weather Statement	MFR	Klamath	38 min
Jul 31, 5:41 PM PDT	Special Weather Statement	MFR	Josephine	49 min
Jul 31, 5:59 PM PDT	Severe Thunderstorm Warning	MFR	Josephine	31 min
Jul 31, 6:45 PM PDT	Special Weather Statement	MFR	Josephine	30 min
Jul 31, 7:13 PM PDT	Special Weather Statement	MFR	Jackson	32 min
Jul 31, 7:44 PM PDT	Special Weather Statement	MFR	Jackson	46 min
Aug 1, 4:02 PM PDT	Special Weather Statement	MFR		43 min
Aug 1, 4:10 PM PDT	Special Weather Statement	MFR		35 min
Aug 1, 4:32 PM PDT	Severe Thunderstorm Warning	MFR	Douglas, Klamath	43 min
Aug 1, 4:40 PM PDT	Special Weather Statement	MFR	Josephine	35 min
Aug 1, 4:57 PM PDT	Severe Thunderstorm Warning	MFR	Curry, Josephine	48 min
Jul 31, 5:36 PM PDT	Special Weather Statement	MFR	Siskiyou	24 min
Jul 31, 6:27 PM PDT	Special Weather Statement	MFR	Del Norte	33 min
Jul 31, 6:30 PM PDT	Special Weather Statement	MFR	Siskiyou	30 min
Jul 31, 6:55 PM PDT	Special Weather Statement	MFR	Siskiyou	35 min
Jul 31, 7:12 PM PDT	Special Weather Statement	MFR	Siskiyou	33 min
Aug 1, 3:59 PM PDT	Special Weather Statement	MFR	Siskiyou	46 min
Aug 1, 4:45 PM PDT	Special Weather Statement	MFR	Siskiyou	30 min

Nearby

Severe Thunderstorm Warnings in California, 2025 Every severe thunderstorm warning in 2025

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.