Weather alerts in Jackson County, Oregon, 2009

102 weather alerts in 2009, from the National Weather Service and the Storm Prediction Center. An alert counts here when it covered this county.

Jackson County and its neighbors

Each county as a circle sized by its count in 2009. Tap one for its archive.

Alerts: 102
Warnings: 23
Watches: 13
Advisories: 59
Busiest month: August20 alerts
Busiest day: August 2, 200913 alerts

Over time

By month

Warning verification

How often warnings here had a storm report inside them, and how much warning the reports had.

Jackson County, 2009

	Warnings	With a report	False alarm ratio	Reports	Inside a warning	Mean lead time
Tornado warnings	0			0
Severe thunderstorm warnings	9	7	22%	14	50%	9 min
Flash flood warnings	2	1	50%	5	20%	0 min

Each office's whole area, 2009

	Warnings	With a report	False alarm ratio	Reports	Inside a warning	Mean lead time
NWS Medford, OR: severe thunderstorm warnings	21	10	52%	30	43%	11 min
NWS Medford, OR: flash flood warnings	3	1	67%	6	17%	0 min

An office's figures cover every county it serves, including across state lines.

Verified by the Iowa Environmental Mesonet's Cow, which matches each storm-based warning with the local storm reports inside its polygon while it was in force, within 15 km of its edge: a tornado warning counts as verified on a tornado report, a severe thunderstorm warning on hail of 1 inch or more, a gust of 58 mph or more, or wind damage, a flash flood warning on a flash flood report. The false alarm ratio is the share of warnings with no such report; "inside a warning" is the probability of detection, the share of reports that fell inside one; lead time runs from the warning's issue to each report inside it, counting zero for a report that came first. A warning with no report is not proof nothing happened: reports come from spotters, the public and damage surveys, and are thin where few people live.

The alerts

Every alert, in the order issued. Times are local, Pacific Time. Each opens its own page with the text, the map, the radar and the sounding.

Issued	Product	Office	Lasted
Jan 4, 3:28 AM PST	Winter Weather Advisory	MFR	33 hr
Jan 8, 2:14 PM PST	Air Stagnation Advisory	MFR	13 days
Jan 13, 7:27 PM PST	Dense Fog Advisory	MFR	13 hr
Jan 14, 6:18 PM PST	Dense Fog Advisory	MFR	15 hr
Jan 15, 7:00 PM PST	Dense Fog Advisory	MFR	14 hr
Jan 16, 1:48 PM PST	Dense Fog Advisory	MFR	19 hr
Jan 17, 1:23 PM PST	Dense Fog Advisory	MFR	19 hr
Jan 30, 12:38 PM PST	Air Stagnation Advisory	MFR	6 days
Feb 9, 2:03 PM PST	Winter Weather Advisory	MFR	54 hr
Feb 11, 1:59 PM PST	Winter Storm Watch	MFR	12 hr
Feb 12, 2:23 AM PST	Winter Storm Warning	MFR	32 hr
Feb 12, 2:03 PM PST	Winter Weather Advisory	MFR	20 hr
Feb 14, 3:04 AM PST	Winter Weather Advisory	MFR	31 hr
Feb 14, 2:40 PM PST	Wind Advisory	MFR	19 hr
Feb 25, 2:30 AM PST	Winter Weather Advisory	MFR	30 hr
Mar 1, 2:08 AM PST	Wind Advisory	MFR	20 hr
Mar 2, 3:02 PM PST	Winter Weather Advisory	MFR	21 hr
Mar 5, 3:21 AM PST	Winter Weather Advisory	MFR	23 hr
Mar 7, 2:32 PM PST	Winter Weather Advisory	MFR	29 hr
Mar 14, 3:30 AM PDT	Winter Weather Advisory	MFR	56 hr
Mar 22, 3:30 AM PDT	Frost Advisory	MFR	29 hr
Mar 24, 2:41 PM PDT	Frost Advisory	MFR	15 hr
Mar 29, 3:07 AM PDT	Frost Advisory	MFR	30 hr
Mar 31, 3:33 AM PDT	Frost Advisory	MFR	4 hr
Apr 2, 3:32 AM PDT	Frost Advisory	MFR	11 hr
Apr 2, 2:53 PM PDT	Freeze Watch	MFR	14 hr
Apr 3, 5:12 AM PDT	Freeze Warning	MFR	28 hr
Apr 4, 2:52 PM PDT	Frost Advisory	MFR	18 hr
Apr 13, 3:14 AM PDT	Frost Advisory	MFR	30 hr
Apr 13, 2:02 PM PDT	Freeze Watch	MFR	19 hr
Apr 14, 9:27 AM PDT	Freeze Warning	MFR	24 hr
Apr 15, 3:41 AM PDT	Frost Advisory	MFR	29 hr
Apr 15, 3:41 AM PDT	Freeze Watch	MFR	11 hr
Apr 16, 12:29 AM PDT	Freeze Warning	MFR	9 hr
Apr 23, 2:32 PM PDT	Frost Advisory	MFR	18 hr
Apr 24, 2:37 AM PDT	Frost Advisory	MFR	30 hr
Apr 25, 2:54 AM PDT	Frost Advisory	MFR	24 hr
Apr 29, 1:10 PM PDT	Frost Advisory	MFR	19 hr
May 3, 1:29 PM PDT	Wind Advisory	MFR	30 hr
Jun 2, 11:14 AM PDT	Flash Flood Watch	MFR	8 hr
Jun 2, 4:45 PM PDT	Flash Flood Warning	MFR	30 min
Jun 2, 7:19 PM PDT	Flash Flood Watch	MFR	22 hr
Jun 3, 4:44 PM PDT	Mesoscale Discussion	SPC	91 min
Jun 12, 8:56 AM PDT	Flash Flood Watch	MFR	13 hr
Jun 12, 7:12 PM PDT	Areal Flood Advisory	MFR	3 hr
Jun 12, 7:22 PM PDT	Areal Flood Advisory	MFR	3 hr
Jun 12, 7:23 PM PDT	Areal Flood Advisory	MFR	3 hr
Jun 12, 8:16 PM PDT	Flash Flood Warning	MFR	59 min
Jun 12, 9:23 PM PDT	Areal Flood Advisory	MFR	2 hr
Jul 19, 3:04 PM PDT	Fire Weather Watch	MFR	18 hr
Jul 29, 1:02 PM PDT	Fire Weather Watch	MFR	4 days
Jul 30, 10:26 AM PDT	Red Flag Warning	MFR	13 hr
Aug 1, 2:03 PM PDT	Red Flag Warning	MFR	8 hr
Aug 1, 3:34 PM PDT	Mesoscale Discussion	SPC	56 min
Aug 1, 5:55 PM PDT	Severe Thunderstorm Warning	MFR	44 min
Aug 1, 5:59 PM PDT	Special Weather Statement	MFR	31 min
Aug 1, 6:50 PM PDT	Severe Thunderstorm Warning	MFR	29 min
Aug 1, 7:07 PM PDT	Severe Thunderstorm Warning	MFR	23 min
Aug 1, 7:30 PM PDT	Severe Thunderstorm Warning	MFR	30 min
Aug 1, 8:08 PM PDT	Severe Thunderstorm Warning	MFR	37 min
Aug 1, 8:32 PM PDT	Severe Thunderstorm Warning	MFR	28 min
Aug 1, 8:44 PM PDT	Severe Thunderstorm Warning	MFR	19 min
Aug 1, 8:46 PM PDT	Severe Thunderstorm Warning	MFR	29 min
Aug 2, 12:53 PM PDT	Red Flag Warning	MFR	9 hr
Aug 2, 1:18 PM PDT	Mesoscale Discussion	SPC	117 min
Aug 2, 2:39 PM PDT	Severe Thunderstorm Watch	SPC	6 hr
Aug 2, 3:48 PM PDT	Mesoscale Discussion	SPC	57 min
Aug 2, 5:27 PM PDT	Mesoscale Discussion	SPC	63 min
Aug 2, 6:55 PM PDT	Mesoscale Discussion	SPC	65 min
Aug 2, 7:33 PM PDT	Severe Thunderstorm Warning	MFR	31 min
Aug 4, 3:59 PM PDT	Fire Weather Watch	MFR	31 hr
Aug 5, 3:15 PM PDT	Red Flag Warning	MFR	6 hr
Sep 11, 11:56 AM PDT	Fire Weather Watch	MFR	16 hr
Sep 12, 3:55 AM PDT	Red Flag Warning	MFR	19 hr
Sep 19, 1:24 PM PDT	Fire Weather Watch	MFR	16 hr
Sep 20, 5:38 AM PDT	Red Flag Warning	MFR	55 hr
Sep 27, 2:34 PM PDT	Red Flag Warning	MFR	28 hr
Sep 30, 2:18 AM PDT	Frost Advisory	MFR	31 hr
Oct 5, 2:28 AM PDT	Frost Advisory	MFR	30 hr
Oct 6, 3:08 AM PDT	Frost Advisory	MFR	29 hr
Oct 10, 2:41 PM PDT	Frost Advisory	MFR	18 hr
Oct 12, 1:31 PM PDT	Wind Advisory	MFR	30 hr
Oct 27, 2:09 PM PDT	Frost Advisory	MFR	19 hr
Nov 19, 2:21 PM PST	Winter Weather Advisory	MFR	37 hr
Nov 21, 2:10 PM PST	Winter Weather Advisory	MFR	17 hr
Nov 26, 3:23 AM PST	Dense Fog Advisory	MFR	7 hr
Nov 30, 9:38 AM PST	Air Stagnation Advisory	MFR	6 days
Dec 4, 3:11 AM PST	Dense Fog Advisory	MFR	6 hr
Dec 4, 9:05 AM PST	Dense Fog Advisory	MFR	115 min
Dec 4, 8:27 PM PST	Dense Fog Advisory	MFR	12 hr
Dec 5, 8:04 AM PST	Dense Fog Advisory	MFR	56 min
Dec 11, 2:13 PM PST	Winter Weather Advisory	MFR	4 hr
Dec 14, 3:51 AM PST	Winter Weather Advisory	MFR	51 hr
Dec 19, 6:57 AM PST	Dense Fog Advisory	MFR	3 hr
Dec 21, 3:15 AM PST	Winter Weather Advisory	MFR	36 hr
Dec 23, 2:34 PM PST	Air Stagnation Advisory	MFR	3 days
Dec 24, 5:03 PM PST	Dense Fog Advisory	MFR	17 hr
Dec 25, 2:55 PM PST	Dense Fog Advisory	MFR	19 hr
Dec 26, 2:19 PM PST	Winter Weather Advisory	MFR	14 hr
Dec 28, 3:08 PM PST	Winter Weather Advisory	MFR	37 hr
Dec 28, 8:43 PM PST	Dense Fog Advisory	MFR	13 hr
Dec 30, 4:00 AM PST	Winter Storm Warning	MFR	32 hr

By product

Every kind of product issued here, grouped by hazard. Each opens the same place narrowed to that product.

Product	Alerts
Severe storms
Severe Thunderstorm Warning	9
Severe Thunderstorm Watch	1
Mesoscale Discussion	6
Special Weather Statement	1
Flooding
Flash Flood Warning	2
Flash Flood Watch	3
Areal Flood Advisory	4
Winter
Winter Storm Warning	2
Winter Storm Watch	1
Winter Weather Advisory	16
Cold
Freeze Warning	3
Freeze Watch	3
Frost Advisory	17
Wind and dust
Wind Advisory	4
Fire
Red Flag Warning	7
Fire Weather Watch	5
Fog and smoke
Air Stagnation Advisory	4
Dense Fog Advisory	14

The busiest days

Days with the most alerts issued, by UTC date.

Nearby

Alerts in force now Tornadoes on record Forecast The radar archive 2008 2010

Sources

National Weather Service watches, warnings, advisories and statements from the Iowa Environmental Mesonet's VTEC archive, which reconstructs tornado, severe thunderstorm, flash flood and marine warnings back to 1986 from the NWS text archive. Storm Prediction Center watches and mesoscale discussions from SPC's archive through the Mesonet. County centers from the US Census Bureau. Warning verification from the Mesonet's Cow. Rebuilt daily.