Alert archive / California / Severe Thunderstorm Warnings in 2025
Severe Thunderstorm Warning 75, NWS Medford, OR
NWS Medford, OR issued this severe thunderstorm warning at Aug 27, 2025, 4:55 PM PDT for Siskiyou 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
- Aug 27, 2025, 4:55 PM PDT (23:55 UTC)
- Expired
- Aug 27, 2025, 5:45 PM PDT
- In force
- 50 min
- Issued by
- NWS Medford, OR
- Area
- Storm-based polygon
- Hail
- 1.0 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 23:56 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
Reno, NV (KREV), launched 12:00Z, 11.9 hours before the alert went out and 430 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.
- Mixed-layer CAPE
- 12 J/kg
- Mixed-layer CIN
- -179 J/kg
- Mixed-layer LCL
- 1558 m above ground
- 0-6 km bulk shear
- 8 kt
- 0-1 km storm-relative helicity
- 100 m²/s²
- 0-3 km storm-relative helicity
- 82 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
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 Aug 27, 4:22 PM PDT, 33 minutes earlier.
Area forecast discussion, Aug 27, 4:22 PM PDT, 33 minutes before
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Special weather statement, Aug 27, 2:06 PM PDT, 2 hours 49 minutes before
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</html>Special weather statement, Aug 27, 4:16 PM PDT, 39 minutes before
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<body>
<main class="wrap">
<section class="card" role="status" aria-live="polite">
<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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<main class="wrap">
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<div class="status" id="status">Temporary Notice</div>
<h1 id="headline">This service is currently unavailable.</h1>
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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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</html>The office that day
Everything else NWS Medford, OR issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 26, 5:07 PM PDT | Special Weather Statement | MFR | 38 min | |
| Aug 26, 5:07 PM PDT | Severe Thunderstorm Warning | MFR | Josephine | 38 min |
| Aug 26, 5:35 PM PDT | Special Weather Statement | MFR | Josephine | 25 min |
| Aug 26, 5:54 PM PDT | Special Weather Statement | MFR | Jackson | 36 min |
| Aug 26, 6:14 PM PDT | Special Weather Statement | MFR | Josephine | 31 min |
| Aug 26, 6:31 PM PDT | Severe Thunderstorm Warning | MFR | Jackson, Josephine | 32 min |
| Aug 26, 7:01 PM PDT | Special Weather Statement | MFR | 29 min | |
| Aug 26, 7:20 PM PDT | Special Weather Statement | MFR | Josephine | 25 min |
| Aug 26, 7:50 PM PDT | Special Weather Statement | MFR | Jackson | 40 min |
| Aug 26, 8:05 PM PDT | Severe Thunderstorm Warning | MFR | Jackson | 40 min |
| Aug 27, 3:48 PM PDT | Special Weather Statement | MFR | 27 min | |
| Aug 27, 4:19 PM PDT | Special Weather Statement | MFR | 41 min | |
| Aug 26, 5:30 PM PDT | Severe Thunderstorm Warning | MFR | Siskiyou | 30 min |
| Aug 26, 6:04 PM PDT | Severe Thunderstorm Warning | MFR | Siskiyou | 26 min |
| Aug 26, 6:12 PM PDT | Special Weather Statement | MFR | Siskiyou | 33 min |
| Aug 26, 6:29 PM PDT | Severe Thunderstorm Warning | MFR | Siskiyou | 31 min |
| Aug 26, 6:47 PM PDT | Severe Thunderstorm Warning | MFR | Siskiyou | 28 min |
| Aug 26, 7:47 PM PDT | Special Weather Statement | MFR | Modoc | 28 min |
| Aug 27, 2:06 PM PDT | Special Weather Statement | MFR | Modoc | 24 min |
| Aug 27, 4:16 PM PDT | Special Weather Statement | MFR | Siskiyou | 44 min |
| Aug 27, 4:31 PM PDT | Severe Thunderstorm Warning | MFR | Siskiyou | 44 min |
Nearby
Severe Thunderstorm Warnings in California, 2025Every 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.