Alert archive / Oregon / Tornado Warnings in 2004

Tornado Warning 4, NWS Pendleton, OR

July 19, 2004Grant County, Oregon

NWS Pendleton, OR issued this tornado warning at Jul 19, 2004, 3:02 PM PDT for Grant County, Oregon. It was in force for 43 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: Jul 19, 2004, 3:02 PM PDT (22:02 UTC)
Expired: Jul 19, 2004, 3:45 PM PDT
In force: 43 min
Issued by: NWS Pendleton, OR
Area: Counties, with a storm outline in the text

County Grant County, OR

The radar

The Pendleton radar (KPDT), 90 km from the middle of the area, began a volume at 22:04 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

Boise Airport, ID (KBOI), launched 12:00Z, 10.0 hours before the alert went out and 269 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: 73 J/kg
Mixed-layer CIN: -283 J/kg
Mixed-layer LCL: 1998 m above ground
0-6 km bulk shear: 25 kt
0-1 km storm-relative helicity: 24 m²/s²
0-3 km storm-relative helicity: 71 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.

000 
WFUS56 KPDT 192202
TORPDT
ORC023-192245-

BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE PENDLETON OR
302 PM PDT MON JUL 19 2004

THE NATIONAL WEATHER SERVICE IN PENDLETON HAS ISSUED A

* TORNADO WARNING FOR...
  GRANT COUNTY IN EAST CENTRAL OREGON
  
* UNTIL 345 PM PDT

* AT 259 PM PDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM CAPABLE OF PRODUCING A TORNADO 14 MILES
  SOUTHWEST OF DALE...OR ABOUT 33 MILES NORTH OF JOHN DAY...MOVING
  NORTHEAST AT 40 MPH.

* THE TORNADO IS EXPECTED TO BE NEAR...
  DALE BY 320 PM PDT

THIS IS A DANGEROUS SITUATION. IF YOU ARE IN THE PATH OF THE 
TORNADO...TAKE COVER IMMEDIATELY.

THE SAFEST PLACE TO BE DURING A TORNADO IS IN A BASEMENT. GET UNDER A
WORKBENCH OR OTHER PIECE OF STURDY FURNITURE. IF NO BASEMENT IS
AVAILABLE...SEEK SHELTER ON THE LOWEST FLOOR OF THE BUILDING IN AN
INTERIOR HALLWAY OR ROOM SUCH AS A CLOSET. USE BLANKETS OR PILLOWS TO
COVER YOUR BODY AND ALWAYS STAY AWAY FROM WINDOWS.

IF IN MOBILE HOMES OR VEHICLES...EVACUATE THEM AND GET INSIDE A
SUBSTANTIAL SHELTER. IF NO SHELTER IS AVAILABLE...LIE FLAT IN THE
NEAREST DITCH OR OTHER LOW SPOT AND COVER YOUR HEAD WITH YOUR HANDS.

LAT...LON 4493 11944 4476 11920 4479 11845 4503 11861

$$

The office that day

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

Issued	Product	Office	Counties	Lasted
Jul 19, 12:34 PM PDT	Severe Thunderstorm Warning	PDT	Grant	41 min
Jul 19, 12:48 PM PDT	Severe Thunderstorm Warning	PDT	Crook	57 min
Jul 19, 1:28 PM PDT	Severe Thunderstorm Warning	PDT	Wheeler	62 min
Jul 19, 2:05 PM PDT	Severe Thunderstorm Warning	PDT	Union	55 min
Jul 19, 2:14 PM PDT	Severe Thunderstorm Warning	PDT	Grant	61 min
Jul 19, 2:38 PM PDT	Severe Thunderstorm Warning	PDT	Morrow	67 min
Jul 19, 3:08 PM PDT	Severe Thunderstorm Warning	PDT	Umatilla	67 min
Jul 19, 3:41 PM PDT	Severe Thunderstorm Warning	PDT	Union	64 min
Jul 19, 4:44 PM PDT	Severe Thunderstorm Warning	PDT	Union	61 min

Nearby

Tornado Warnings in Oregon, 2004 Every tornado warning in 2004 Tornadoes in 2004

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.