Alert archive / California / Severe Thunderstorm Warnings in 2025

Severe Thunderstorm Warning 18, NWS Medford, OR

July 2, 2025Modoc County, Siskiyou County, California

NWS Medford, OR issued this severe thunderstorm warning at Jul 2, 2025, 4:49 PM PDT for Modoc County, Siskiyou County, California. It was in force for 41 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 2, 2025, 4:49 PM PDT (23:49 UTC)
Expired: Jul 2, 2025, 5:30 PM PDT
In force: 41 min
Issued by: NWS Medford, OR
Area: Storm-based polygon
Hail: 1.0 in
Wind: 50.0 mph

Counties Modoc County, CA, Siskiyou County, CA

The radar

The Medford radar (KMAX), 105 km from the middle of the area, began a volume at 23:51 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, 11.8 hours before the alert went out and 367 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: 68 J/kg
Mixed-layer CIN: -347 J/kg
Mixed-layer LCL: 2009 m above ground
0-6 km bulk shear: 28 kt
0-1 km storm-relative helicity: 21 m²/s²
0-3 km storm-relative helicity: 126 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 2, 1:32 PM PDT, 3 hours 17 minutes earlier.

Area forecast discussion, Jul 2, 1:32 PM PDT, 3 hours 17 minutes before

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In the hours before

Special weather statement, Jul 2, 2:59 PM PDT, 1 hour 50 minutes before

Special Weather Statement
National Weather Service Medford OR
259 PM PDT Wed Jul 2 2025

CAZ083-085-022230-
North Central and Southeast Siskiyou County CA-Modoc County CA-
259 PM PDT Wed Jul 2 2025

...A strong thunderstorm will impact portions of east central
Siskiyou and west central Modoc Counties through 330 PM PDT
...

At 258 PM PDT, Doppler radar was tracking a strong thunderstorm near
Medicine Lake Campground, or 28 miles north of Dana. This storm was
moving slow east southeast at 5 mph.

HAZARD...Winds in excess of 40 mph and half inch hail.

SOURCE...Radar indicated.

IMPACT...Gusty winds could knock down tree limbs and blow around
         unsecured objects. Minor damage to outdoor objects is
         possible.

Locations impacted include...
Tionesta.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

If outdoors, consider seeking shelter inside a building.

&&

LAT...LON 4140 12167 4150 12181 4166 12136 4166 12126
      4144 12126
TIME...MOT...LOC 2158Z 271DEG 3KT 4152 12149

MAX HAIL SIZE...0.50 IN
MAX WIND GUST...40 MPH

MAS

Special weather statement, Jul 2, 3:53 PM PDT, 56 minutes before

Special Weather Statement
National Weather Service Medford OR
353 PM PDT Wed Jul 2 2025

ORZ031-022330-
Central and Eastern Lake County OR-
353 PM PDT Wed Jul 2 2025

...A strong thunderstorm will impact portions of central Lake County
through 430 PM PDT...

At 353 PM PDT, Doppler radar was tracking a strong thunderstorm 8
miles east of Summer Lake Wildlife Area, or 59 miles north of
Lakeview, moving northeast at 15 mph.

HAZARD...Winds in excess of 40 mph and half inch hail.

SOURCE...Radar indicated.

IMPACT...Gusty winds could knock down tree limbs and blow around
         unsecured objects. Minor damage to outdoor objects is
         possible.

Locations impacted include...
Summer Lake Wildlife Area, Summer Lake, and Summer Lake Safety Rest
Area.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

If outdoors, consider seeking shelter inside a building.

&&

LAT...LON 4292 12067 4295 12082 4304 12075 4319 12056
      4298 12043
TIME...MOT...LOC 2253Z 237DEG 14KT 4302 12062

MAX HAIL SIZE...0.50 IN
MAX WIND GUST...40 MPH

JWG

Special weather statement, Jul 2, 4:18 PM PDT, 31 minutes before

Special Weather Statement
National Weather Service Medford OR
418 PM PDT Wed Jul 2 2025

CAZ083>085-030000-
North Central and Southeast Siskiyou County CA-
Northeast Siskiyou and Northwest Modoc Counties CA-Modoc County CA-
418 PM PDT Wed Jul 2 2025

...A strong thunderstorm will impact portions of east central
Siskiyou and west central Modoc Counties through 500 PM PDT
...

At 417 PM PDT, Doppler radar was tracking a strong thunderstorm near
Lava Beds National Monument, or 38 miles southeast of Klamath Falls,
moving east at 5 mph.

HAZARD...Winds in excess of 40 mph and half inch hail.

SOURCE...Radar indicated.

IMPACT...Gusty winds could knock down tree limbs and blow around
         unsecured objects. Minor damage to outdoor objects is
         possible.

Locations impacted include...
Lava Beds National Monument and Tionesta.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

If outdoors, consider seeking shelter inside a building.

&&

LAT...LON 4165 12151 4181 12153 4188 12126 4162 12123
TIME...MOT...LOC 2317Z 262DEG 5KT 4173 12142

MAX HAIL SIZE...0.50 IN
MAX WIND GUST...40 MPH

ANH

Special weather statement, Jul 2, 4:34 PM PDT, 15 minutes before

Special Weather Statement
National Weather Service Medford OR
434 PM PDT Wed Jul 2 2025

CAZ083-085-030015-
North Central and Southeast Siskiyou County CA-Modoc County CA-
434 PM PDT Wed Jul 2 2025

...A strong thunderstorm will impact portions of east central
Siskiyou and west central Modoc Counties through 515 PM PDT
...

At 434 PM PDT, Doppler radar was tracking a strong thunderstorm 10
miles east of Trout Creek Campground, or 23 miles north of Dana,
moving east at 20 mph.

HAZARD...Winds in excess of 40 mph and half inch hail.

SOURCE...Radar indicated.

IMPACT...Gusty winds could knock down tree limbs and blow around
         unsecured objects. Minor damage to outdoor objects is
         possible.

Locations impacted include...
Lava Lake Campground.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

If outdoors, consider seeking shelter inside a building.

&&

LAT...LON 4137 12181 4155 12174 4149 12128 4125 12140
TIME...MOT...LOC 2334Z 286DEG 17KT 4144 12168

MAX HAIL SIZE...0.50 IN
MAX WIND GUST...40 MPH

ANH

The office that day

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

Issued	Product	Office	Counties	Lasted
Jul 1, 5:00 PM PDT	Special Weather Statement	MFR		45 min
Jul 1, 6:44 PM PDT	Severe Thunderstorm Warning	MFR	Klamath	46 min
Jul 2, 1:09 PM PDT	Red Flag Warning	MFR	Harney, Klamath, Lake	43 hr
Jul 2, 2:59 PM PDT	Special Weather Statement	MFR		31 min
Jul 2, 3:53 PM PDT	Special Weather Statement	MFR	Lake	37 min
Jul 2, 4:18 PM PDT	Special Weather Statement	MFR		42 min
Jul 2, 4:34 PM PDT	Special Weather Statement	MFR		41 min
Jul 1, 6:00 PM PDT	Special Weather Statement	MFR	Siskiyou	45 min
Jul 1, 7:20 PM PDT	Special Weather Statement	MFR	Trinity	25 min
Jul 1, 7:42 PM PDT	Special Weather Statement	MFR	Siskiyou	33 min
Jul 1, 7:53 PM PDT	Special Weather Statement	MFR	Trinity	52 min
Jul 1, 8:09 PM PDT	Special Weather Statement	MFR	Siskiyou	51 min
Jul 1, 8:50 PM PDT	Special Weather Statement	MFR	Siskiyou	25 min
Jul 1, 9:06 PM PDT	Special Weather Statement	MFR	Siskiyou	24 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.