Alert archive / Oregon / Severe Thunderstorm Warnings in 2004

Severe Thunderstorm Warning 21, NWS Pendleton, OR

July 19, 2004Grant County, Oregon

NWS Pendleton, OR issued this severe thunderstorm warning at Jul 19, 2004, 2:14 PM PDT for Grant County, Oregon. It was in force for 61 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, 2:14 PM PDT (21:14 UTC)
Expired: Jul 19, 2004, 3:15 PM PDT
In force: 61 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), 104 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

Boise Airport, ID (KBOI), launched 12:00Z, 9.2 hours before the alert went out and 286 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 
WUUS56 KPDT 192114
SVRPDT
ORC023-192215-

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE PENDLETON OR
214 PM PDT MON JUL 19 2004

THE NATIONAL WEATHER SERVICE IN PENDLETON HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  GRANT COUNTY IN EAST CENTRAL OREGON

* UNTIL 315 PM PDT

* AT 209 PM PDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM.  THIS STORM WAS LOCATED 19 MILES SOUTHWEST OF
  MONUMENT...OR ABOUT 43 MILES NORTHWEST OF JOHN DAY...AND MOVING
  NORTHEAST AT 45 MPH.

* THE SEVERE THUNDERSTORM WILL BE NEAR...
  MONUMENT BY 235 PM PDT
  DALE BY 305 PM PDT

HAIL TO THE SIZE OF GOLFBALLS AND WIND GUSTS TO 80 MPH ARE LIKELY.
FOR YOUR PROTECTION MOVE TO AN INTERIOR ROOM ON THE LOWEST FLOOR OF
YOUR HOME OR BUSINESS.

LAT...LON 4495 11966 4455 11967 4463 11877 4501 11892

$$

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, 2:38 PM PDT	Severe Thunderstorm Warning	PDT	Morrow	67 min
Jul 19, 3:02 PM PDT	Tornado Warning	PDT	Grant	43 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

Severe Thunderstorm Warnings in Oregon, 2004 Every severe thunderstorm warning 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.