Alert archive / California / Severe Thunderstorm Warnings in 2017
Severe Thunderstorm Warning 13, NWS Medford, OR
NWS Medford, OR issued this severe thunderstorm warning at Jun 19, 2017, 7:53 PM PDT for Siskiyou County, California. It was in force for 52 min. No storm report in the archive falls inside the area while it was in force.
The area
The outline as issued.
The facts
- Issued
- Jun 19, 2017, 7:53 PM PDT (02:53 UTC)
- Expired
- Jun 19, 2017, 8:45 PM PDT
- In force
- 52 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), 99 km from the middle of the area, began a volume at 02:56 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
Medford/Jackson, OR (KMFR), launched 00:00Z, 2.9 hours before the alert went out and 120 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
- 1180 J/kg
- Mixed-layer CIN
- -191 J/kg
- Mixed-layer LCL
- 2123 m above ground
- 0-6 km bulk shear
- 14 kt
- 0-1 km storm-relative helicity
- -22 m²/s²
- 0-3 km storm-relative helicity
- 58 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
817
WUUS56 KMFR 200253
SVRMFR
CAC093-200345-
/O.NEW.KMFR.SV.W.0013.170620T0253Z-170620T0345Z/
BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Medford OR
753 PM PDT MON JUN 19 2017
The National Weather Service in Medford has issued a
* Severe Thunderstorm Warning for...
East central Siskiyou County in northern California...
* Until 845 PM PDT
* At 753 PM PDT, a severe thunderstorm was located near Doorknob Snow
Park, or 35 miles south of Klamath Falls, and is nearly stationary.
HAZARD...60 mph wind gusts and quarter size hail.
SOURCE...Radar indicated.
IMPACT...Hail damage to vehicles is expected. Expect wind damage
to roofs, siding, and trees.
* Locations impacted include...
Lava Beds National Monument, Doorknob Snow Park and Four Corners
Snow Park.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
For your protection move to an interior room on the lowest floor of a
building.
Torrential rainfall is occurring with this storm, and may lead to
flash flooding. Do not drive your vehicle through flooded roadways.
&&
LAT...LON 4181 12181 4181 12146 4178 12146 4177 12145
4164 12145 4161 12183
TIME...MOT...LOC 0253Z 145DEG 1KT 4172 12162
HAIL...1.00IN
WIND...60MPH
$$
WRIGHT1 follow-up statement
812
WWUS56 KMFR 200315
SVSMFR
Severe Weather Statement
National Weather Service Medford OR
815 PM PDT MON JUN 19 2017
CAC093-200345-
/O.CON.KMFR.SV.W.0013.000000T0000Z-170620T0345Z/
Siskiyou CA-
815 PM PDT MON JUN 19 2017
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 845 PM PDT
FOR EAST CENTRAL SISKIYOU COUNTY...
At 815 PM PDT, a severe thunderstorm was located near Doorknob Snow
Park, or 35 miles south of Klamath Falls, and is nearly stationary.
HAZARD...60 mph wind gusts and quarter size hail.
SOURCE...Radar indicated.
IMPACT...Hail damage to vehicles is expected. Expect wind damage to
roofs, siding, and trees.
Locations impacted include...
Lava Beds National Monument, Doorknob Snow Park and Four Corners Snow
Park.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
For your protection move to an interior room on the lowest floor of a
building.
Torrential rainfall is occurring with this storm, and may lead to
flash flooding. Do not drive your vehicle through flooded roadways.
&&
LAT...LON 4181 12181 4181 12146 4178 12146 4177 12145
4164 12145 4161 12183
TIME...MOT...LOC 0315Z 145DEG 1KT 4173 12162
HAIL...1.00IN
WIND...60MPH
$$
WRIGHTThe office that day
Everything else NWS Medford, OR issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jun 19, 6:51 PM PDT | Special Weather Statement | MFR | Siskiyou | 39 min |
| Jun 19, 7:05 PM PDT | Severe Thunderstorm Warning | MFR | Siskiyou | 20 min |
| Jun 19, 7:14 PM PDT | Flash Flood Warning | MFR | Modoc, Siskiyou | 3 hr |
| Jun 19, 7:50 PM PDT | Flash Flood Warning | MFR | Modoc, Siskiyou | 2 hr |
| Jun 19, 8:44 PM PDT | Severe Thunderstorm Warning | MFR | Siskiyou | 28 min |
Nearby
Severe Thunderstorm Warnings in California, 2017Every severe thunderstorm warning in 2017
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.