Alert archive / Oregon / Severe Thunderstorm Warnings in 1998

Severe Thunderstorm Warning 11, NWS Pendleton, OR

May 4, 1998Crook County, Deschutes County, Oregon

NWS Pendleton, OR issued this severe thunderstorm warning at May 4, 1998, 5:31 PM PDT for Crook County, Deschutes County, Oregon. It was in force for 49 min. No storm report in the archive falls inside the area while it was in force.

The area

The counties it named.

The facts

Issued: May 4, 1998, 5:31 PM PDT (00:31 UTC)
Expired: May 4, 1998, 6:20 PM PDT
In force: 49 min
Issued by: NWS Pendleton, OR
Area: Whole counties

Counties Crook County, OR, Deschutes County, OR

The radar

The Pendleton radar (KPDT), 240 km from the middle of the area, began a volume at 00:30 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 text

The text of this product is not in the archive. The NWS text archive before 2002 is incomplete.

What forecasters said that day

The local office's own words before this severe thunderstorm warning went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.

NWS Pendleton, OR wrote its last area forecast discussion before this severe thunderstorm warning went out at May 4, 2:00 PM PDT, 3 hours 31 minutes earlier.

Area forecast discussion, May 4, 2:00 PM PDT, 3 hours 31 minutes before

NORTHEAST OREGON/SOUTHEAST WASHINGTON FORECAST DISCUSSION
NATIONAL WEATHER SERVICE PENDLETON OR
200 PM PDT MON MAY 04 1998

KPDT RADAR AND VISIBLE LOOPS SHOW BUILDUPS FORMING ALONG THE
SOUTHERN BLUE MOUNTAINS.  ALTHOUGH NO LIGHTNING STRIKES OBSERVED AT
THIS HOUR IN NE OREGON...BELIEVE CONVECTIVE SHOWERS AND
THUNDERSTORMS WILL SOON TAKE PLACE.  QUESTION REMAINS IS HOW FAR
NORTH TO EXPECT THE CONVECTIVE ACTIVITY.  HIGH PRESSURE AND AN
EASTERLY FLOW ALOFT WILL KEEP THE WASHINGTON PORTION OF OUR COUNTY
WARNING AREA DRY AND STABLE.  EASTERLY FLOW ALOFT WILL ALSO KEEP
THE SHORTWAVE AND MOISTURE MAINLY OVER SOUTHERN OREGON.  YET...WILL
NOT RULE OUT THUNDERSTORMS ALONG THE FOOTHILLS OF BLUE MTNS
TONIGHT.  WILL MENTION SLIGHT CHANCE FOR WALLA WALLA.

THE PERSISTANT CUTOFF LOW WILL FINALLY SHIFT EASTWARD AND FILL OVER
THE NEXT SEVERAL DAYS.  AN UPPER LEVEL TROF OFF THE ALEUTIAN
ISLANDS WILL DROP SOUTHEASTWARD AND KICK THE CUTOFF LOW INLAND.
MORE WRAP-AROUND MOISTURE WILL PROVIDE SHOWERS AND THUNDERSTORMS
TUESDAY YET SHOULD TAPER OFF BY WEDNESDAY.  MRF AND NOGAPS SHOW
SPLIT FLOW OFF THE EASTERN PACIFIC WITH THE NEXT SHORTWAVE AT END
OF EXTENDED PERIOD.   SMITH

PDT 3221  ALW 2110  PSC 0000  YKM 0000

.KPDT-88D...VCP31/CSR21.

.KPDT...SEE PDXFLSPDT STATEMENT NO. 10

The office that day

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

Issued	Product	Office	Counties	Lasted
May 4, 6:15 PM PDT	Severe Thunderstorm Warning	PDT	Umatilla, Union	50 min
May 4, 7:06 PM PDT	Severe Thunderstorm Warning	PDT	Umatilla	44 min

Nearby

Severe Thunderstorm Warnings in Oregon, 1998 Every severe thunderstorm warning in 1998

Sources

The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; radar from the NEXRAD Level II archive.