Alert archive / Oregon / Severe Thunderstorm Warnings in 2021

Severe Thunderstorm Warning 1, NWS Medford, OR

June 2, 2021Lake County, Oregon

NWS Medford, OR issued this severe thunderstorm warning at Jun 2, 2021, 5:29 PM PDT for Lake County, Oregon. It was in force for 31 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 2, 2021, 5:29 PM PDT (00:29 UTC)
Expired: Jun 2, 2021, 6:00 PM PDT
In force: 31 min
Issued by: NWS Medford, OR
Area: Storm-based polygon
Hail: 1.0 in
Wind: 60.0 mph

County Lake County, OR

The radar

The Medford radar (KMAX), 221 km from the middle of the area, began a volume at 00:28 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, 0.5 hours before the alert went out and 203 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: 23 J/kg
Mixed-layer CIN: -462 J/kg
Mixed-layer LCL: 3003 m above ground
0-6 km bulk shear: 17 kt
0-1 km storm-relative helicity: -28 m²/s²
0-3 km storm-relative helicity: 87 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

As transmitted.

605 
WUUS56 KMFR 030029
SVRMFR
ORC037-030100-
/O.NEW.KMFR.SV.W.0001.210603T0029Z-210603T0100Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Medford OR
529 PM PDT Wed Jun 2 2021

The National Weather Service in Medford has issued a

* Severe Thunderstorm Warning for...
  Northern Lake County in south central Oregon...

* Until 600 PM PDT.

* At 529 PM PDT, a severe thunderstorm was located 12 miles north of
  Fort Rock, or 26 miles east of La Pine, moving north at 5 mph.

  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.

* This severe thunderstorm will remain over mainly rural areas of
  northern Lake County.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

For your protection move to an interior room on the lowest floor of a
building.

&&

LAT...LON 4361 12075 4343 12092 4349 12115 4362 12112
      4362 12077
TIME...MOT...LOC 0029Z 201DEG 6KT 4353 12100 

HAIL...1.00IN
WIND...60MPH
 
$$

SCHAAF

2 follow-up statements

461 
WWUS56 KMFR 030047
SVSMFR

Severe Weather Statement
National Weather Service Medford OR
547 PM PDT Wed Jun 2 2021

ORC037-030100-
/O.CON.KMFR.SV.W.0001.000000T0000Z-210603T0100Z/
Lake OR-
547 PM PDT Wed Jun 2 2021

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 600 PM PDT
FOR NORTHERN LAKE COUNTY...

At 544 PM PDT, a severe thunderstorm was located 13 miles north of
Fort Rock, or 27 miles east of La Pine, moving north at 5 mph.

HAZARD...60 mph wind gusts and quarter size hail. Frequent lightning
         is being attributed to this storm. 

SOURCE...Radar indicated. Although the radar indicates that this 
         storm is weakening, large hail could continue to fall for 
         the next few minutes.

IMPACT...Hail damage to vehicles is expected. Expect wind damage to 
         roofs, siding, and trees.

This severe thunderstorm will remain over mainly rural areas of
northern Lake County.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

For your protection move to an interior room on the lowest floor of a
building.

&&

LAT...LON 4361 12075 4343 12092 4349 12115 4362 12112
      4362 12077
TIME...MOT...LOC 0044Z 201DEG 6KT 4355 12099 

HAIL...1.00IN
WIND...60MPH
 
$$

SCHAAF

895 
WWUS56 KMFR 030052
SVSMFR

Severe Weather Statement
National Weather Service Medford OR
552 PM PDT Wed Jun 2 2021

ORC037-030102-
/O.EXP.KMFR.SV.W.0001.000000T0000Z-210603T0100Z/
Lake OR-
552 PM PDT Wed Jun 2 2021

...THE SEVERE THUNDERSTORM WARNING FOR NORTHERN LAKE COUNTY WILL
EXPIRE AT 600 PM PDT...
                
The storm which prompted the warning has weakened below severe
limits, and no longer poses an immediate threat to life or property.
Therefore, the warning will be allowed to expire.  However small 
hail, gusty winds, and occasional lightning strikes are still 
possible with this thunderstorm.

LAT...LON 4361 12075 4343 12092 4349 12115 4362 12112
      4362 12077
TIME...MOT...LOC 0052Z 201DEG 6KT 4355 12099 

$$

SCHAAF

The office that day

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

Issued	Product	Office	Counties	Lasted
Jun 2, 6:42 PM PDT	Special Weather Statement	MFR		33 min
Jun 3, 12:48 PM PDT	Fire Weather Watch	MFR	Harney, Klamath, Lake	15 hr

Nearby

Severe Thunderstorm Warnings in Oregon, 2021 Every severe thunderstorm warning in 2021

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.