Alert archive / Oregon / Severe Thunderstorm Warnings in 2012

Severe Thunderstorm Warning 13, NWS Medford, OR

June 4, 2012Douglas County, Oregon

NWS Medford, OR issued this severe thunderstorm warning at Jun 4, 2012, 2:14 PM PDT for Douglas 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 4, 2012, 2:14 PM PDT (21:14 UTC)
Expired: Jun 4, 2012, 2:45 PM PDT
In force: 31 min
Issued by: NWS Medford, OR
Area: Storm-based polygon

County Douglas County, OR

The radar

The Medford radar (KMAX), 133 km from the middle of the area, began a volume at 21:14 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 12:00Z, 9.2 hours before the alert went out and 100 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: 43 J/kg
Mixed-layer CIN: -27 J/kg
Mixed-layer LCL: 681 m above ground
0-6 km bulk shear: 77 kt
0-1 km storm-relative helicity: 105 m²/s²
0-3 km storm-relative helicity: 156 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

As transmitted, in the capitals the NWS used until 2016.

723 
WUUS56 KMFR 042114
SVRMFR
ORC019-042145-
/O.NEW.KMFR.SV.W.0013.120604T2114Z-120604T2145Z/

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE MEDFORD OR
214 PM PDT MON JUN 4 2012

THE NATIONAL WEATHER SERVICE IN MEDFORD HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  CENTRAL DOUGLAS COUNTY IN SOUTHWEST OREGON...

* UNTIL 245 PM PDT

* AT 210 PM PDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  LINE OF SEVERE THUNDERSTORMS CAPABLE OF PRODUCING QUARTER SIZE
  HAIL.  HEAVY RAIN OF 2 TO 3 INCHES PER HOUR WILL OCCUR WITH THESE  
  STORMS. THESE STORMS WERE LOCATED ALONG A LINE EXTENDING FROM 7
  MILES WEST OF CAVITT CREEK FALLS RECREATION SITE TO 12 MILES SOUTH
  OF CAVITT CREEK FALLS RECREATION SITE...OR ALONG A LINE EXTENDING
  FROM 10 MILES EAST OF ROSEBURG TO 19 MILES SOUTHEAST OF ROSEBURG...
  AND MOVING NORTHEAST AT 30 MPH.

* OTHER LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO
  GLIDE...WOLF CREEK FALLS...SWIFTWATER TRAILHEAD...BAKER MEMORIAL
  PARK AND SUSAN CREEK FALLS TRAIL

PRECAUTIONARY/PREPAREDNESS ACTIONS...

THIS IS A DANGEROUS STORM. IF YOU ARE IN ITS PATH...PREPARE
IMMEDIATELY FOR DAMAGING WINDS...DESTRUCTIVE HAIL...AND DEADLY CLOUD
TO GROUND LIGHTNING. PEOPLE OUTSIDE SHOULD MOVE TO A SHELTER...
PREFERABLY INSIDE A STRONG BUILDING BUT AWAY FROM WINDOWS.

&&

LAT...LON 4348 12301 4317 12283 4294 12308 4321 12324
TIME...MOT...LOC 2114Z 213DEG 25KT 4320 12314 4305 12306

$$

CC

1 follow-up statement

267 
WWUS56 KMFR 042145
SVSMFR

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE MEDFORD OR
245 PM PDT MON JUN 4 2012

ORC019-042154-
/O.EXP.KMFR.SV.W.0013.000000T0000Z-120604T2145Z/
DOUGLAS OR-
245 PM PDT MON JUN 4 2012

...THE SEVERE THUNDERSTORM WARNING FOR CENTRAL DOUGLAS COUNTY WILL
EXPIRE AT 245 PM PDT...

HEAVY RAIN AND OCCASIONAL LIGHTING WILL CONTINUE FOR THESE STORMS 
LOCATED ABOUT 7 MILES EAST OF GLIDE INCLUDING NEAR ROCK CREEK 
CAMPGROUND AND SUSAN CREEK FALLS. 

LAT...LON 4348 12301 4317 12283 4294 12308 4321 12324
TIME...MOT...LOC 2144Z 213DEG 25KT 4337 12298 4322 12290

$$

CC

The office that day

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

Issued	Product	Office	Counties	Lasted
Jun 4, 3:29 AM PDT	Small Craft Advisory for Winds	MFR		17 hr
Jun 4, 10:35 AM PDT	Special Marine Warning	MFR		25 min
Jun 4, 1:40 PM PDT	Special Weather Statement	MFR	Douglas	35 min
Jun 4, 1:42 PM PDT	Severe Thunderstorm Warning	MFR	Jackson, Josephine	23 min
Jun 4, 1:43 PM PDT	Severe Thunderstorm Warning	MFR	Douglas	32 min
Jun 4, 1:52 PM PDT	Severe Thunderstorm Warning	MFR	Douglas	23 min
Jun 4, 2:42 PM PDT	Severe Thunderstorm Warning	MFR	Jackson	33 min
Jun 4, 2:54 PM PDT	Areal Flood Advisory	MFR	Jackson	4 hr
Jun 4, 3:04 PM PDT	Frost Advisory	MFR	Klamath, Lake	16 hr
Jun 4, 3:04 PM PDT	Freeze Watch	MFR	Klamath, Lake	12 hr

Nearby

Severe Thunderstorm Warnings in Oregon, 2012 Every severe thunderstorm warning in 2012

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.