Alert archive / Oregon / Severe Thunderstorm Warnings in 2017

Severe Thunderstorm Warning 8, NWS Portland, OR

May 4, 2017Clackamas County, Oregon

NWS Portland, OR issued this severe thunderstorm warning at May 4, 2017, 4:31 PM PDT for Clackamas County, Oregon. It was in force for 29 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, 2017, 4:31 PM PDT (23:31 UTC)
Expired: May 4, 2017, 5:00 PM PDT
In force: 29 min
Issued by: NWS Portland, OR
Area: Storm-based polygon

County Clackamas County, OR

The watch it was issued in

The SPC watch in force over the same counties when this warning went out.

Issued	Product	Office	Lasted
May 4, 4:05 PM PDT	Severe Thunderstorm Watch	SPC	7 hr

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 Portland, OR wrote its last area forecast discussion before this severe thunderstorm warning went out at May 4, 3:06 PM PDT, 1 hour 25 minutes earlier.

Area forecast discussion, May 4, 3:06 PM PDT, 1 hour 25 minutes before

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Hazardous weather outlook, May 4, 8:06 AM PDT, 8 hours 25 minutes before

Hazardous Weather Outlook
National Weather Service Portland OR
806 AM PDT Thu May 4 2017

ORZ003>008-010>016-WAZ019-020-022-039-040-045-046-050330-
Coast Range of Northwest Oregon-
Central Coast Range of Western Oregon-Lower Columbia-
Greater Portland Metro Area-Central Willamette Valley-
South Willamette Valley-Northern Oregon Cascade Foothills-
Northern Oregon Cascades-Cascade Foothills in Lane County-
Cascades in Lane County-Upper Hood River Valley-
Western Columbia River Gorge-Central Columbia River Gorge-
South Washington Cascades-Willapa Hills-I-
5 Corridor in Cowlitz County-Greater Vancouver Area-
South Washington Cascade Foothills-
806 AM PDT Thu May 4 2017

This Hazardous Weather Outlook is for portions of Northwest
Oregon and Southwest Washington.

.DAY ONE...Today and Tonight
Thunderstorms are expected to develop later this afternoon into
this evening. Stronger storms are most likely over the Cascades
and may produce damaging hail and strong winds.

.DAYS TWO THROUGH SEVEN...Friday through Wednesday
No hazardous weather is expected at this time.

.SPOTTER INFORMATION STATEMENT...
Weather spotters are encouraged to report significant weather
conditions according to standard operating procedures.

In the hours before

Special weather statement, May 4, 1:02 PM PDT, 3 hours 29 minutes before

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Special weather statement, May 4, 1:18 PM PDT, 3 hours 13 minutes before

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Special weather statement, May 4, 1:47 PM PDT, 2 hours 44 minutes before

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Special weather statement, May 4, 2:34 PM PDT, 1 hour 57 minutes before

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Special weather statement, May 4, 3:08 PM PDT, 1 hour 23 minutes before

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Local storm report, May 4, 4:09 PM PDT, 22 minutes before

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The office that day

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

Issued	Product	Office	Counties	Lasted
May 4, 12:35 PM PDT	Special Weather Statement	PQR	Lincoln	25 min
May 4, 12:54 PM PDT	Special Marine Warning	PQR		36 min
May 4, 1:02 PM PDT	Special Weather Statement	PQR	Tillamook	28 min
May 4, 1:18 PM PDT	Special Weather Statement	PQR	Polk	27 min
May 4, 1:28 PM PDT	Severe Thunderstorm Warning	PQR	Lincoln, Tillamook, Yamhill	32 min
May 4, 1:29 PM PDT	Special Marine Warning	PQR		31 min
May 4, 1:47 PM PDT	Special Weather Statement	PQR	Clatsop	28 min
May 4, 2:04 PM PDT	Severe Thunderstorm Warning	PQR	Clatsop	41 min
May 4, 2:25 PM PDT	Severe Thunderstorm Warning	PQR	Clatsop, Tillamook	35 min
May 4, 2:34 PM PDT	Special Weather Statement	PQR	Hood River	41 min
May 4, 3:04 PM PDT	Severe Thunderstorm Warning	PQR	Clatsop	41 min
May 4, 3:08 PM PDT	Special Weather Statement	PQR	Clackamas	37 min
May 4, 3:32 PM PDT	Severe Thunderstorm Warning	PQR	Clackamas, Hood River, Multnomah	28 min
May 4, 3:52 PM PDT	Severe Thunderstorm Warning	PQR	Clackamas, Hood River, Multnomah	23 min
May 4, 4:45 PM PDT	Special Weather Statement	PQR	Linn	30 min
May 4, 12:59 PM PDT	Special Weather Statement	PQR	Clark	31 min
May 4, 4:16 PM PDT	Severe Thunderstorm Warning	PQR	Clark, Cowlitz, Skamania	29 min

Nearby

Severe Thunderstorm Warnings in Oregon, 2017 Every severe thunderstorm warning in 2017

Sources

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