Alert archive / Florida / Osceola County

Weather alerts in Osceola County, Florida, 2009

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

Osceola County and its neighbors

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

Alerts: 174
Warnings: 73
Watches: 43
Advisories: 41
Busiest month: January30 alerts
Busiest day: February 4, 20097 alerts

Over time

By month

Warning verification

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

0 of 3 tornado warnings covering Osceola County in 2009 had a tornado report inside them.

Osceola County, 2009

	Warnings	With a report	False alarm ratio	Reports	Inside a warning	Mean lead time
Tornado warnings	3	0	100%	0
Severe thunderstorm warnings	17	5	71%	9	44%	5 min
Flash flood warnings	0			0

Each office's whole area, 2009

	Warnings	With a report	False alarm ratio	Reports	Inside a warning	Mean lead time
NWS Melbourne, FL: tornado warnings	29	2	93%	7	29%	15 min
NWS Melbourne, FL: severe thunderstorm warnings	106	29	73%	74	77%	21 min
NWS Melbourne, FL: flash flood warnings	2	0	100%	0

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, Eastern Time. Each opens its own page with the text, the map, the radar and the sounding.

Issued	Product	Office	Lasted
Jan 7, 4:08 AM EST	Fire Weather Watch	MLB	23 hr
Jan 7, 4:26 AM EST	Lake Wind Advisory	MLB	13 hr
Jan 7, 1:46 PM EST	Red Flag Warning	MLB	28 hr
Jan 8, 1:49 PM EST	Fire Weather Watch	MLB	15 hr
Jan 9, 4:28 AM EST	Red Flag Warning	MLB	14 hr
Jan 13, 4:02 AM EST	Fire Weather Watch	MLB	24 hr
Jan 13, 4:02 AM EST	Fire Weather Watch	MLB	48 hr
Jan 14, 4:19 AM EST	Red Flag Warning	MLB	14 hr
Jan 15, 4:11 AM EST	Fire Weather Watch	MLB	23 hr
Jan 15, 4:11 AM EST	Red Flag Warning	MLB	14 hr
Jan 15, 2:03 PM EST	Wind Chill Advisory	MLB	19 hr
Jan 19, 4:14 AM EST	Freeze Watch	MLB	24 hr
Jan 19, 2:31 PM EST	Fire Weather Watch	MLB	23 hr
Jan 20, 3:43 AM EST	Fire Weather Watch	MLB	34 hr
Jan 20, 4:10 AM EST	Freeze Watch	MLB	24 hr
Jan 20, 4:10 AM EST	Freeze Warning	MLB	29 hr
Jan 20, 4:10 AM EST	Lake Wind Advisory	MLB	14 hr
Jan 20, 1:36 PM EST	Red Flag Warning	MLB	28 hr
Jan 20, 2:14 PM EST	Wind Chill Advisory	MLB	19 hr
Jan 21, 3:13 AM EST	Fire Weather Watch	MLB	35 hr
Jan 21, 3:42 AM EST	Freeze Warning	MLB	29 hr
Jan 21, 3:42 AM EST	Hard Freeze Warning	MLB	29 hr
Jan 21, 1:54 PM EST	Red Flag Warning	MLB	28 hr
Jan 22, 4:15 AM EST	Freeze Warning	MLB	28 hr
Jan 22, 2:08 PM EST	Red Flag Warning	MLB	28 hr
Jan 24, 2:45 AM EST	Red Flag Warning	MLB	15 hr
Jan 27, 2:17 AM EST	Dense Fog Advisory	MLB	7 hr
Jan 29, 1:49 PM EST	Fire Weather Watch	MLB	24 hr
Jan 30, 1:35 PM EST	Red Flag Warning	MLB	28 hr
Jan 30, 2:36 PM EST	Wind Chill Advisory	MLB	17 hr
Feb 2, 1:51 PM EST	Red Flag Warning	MLB	28 hr
Feb 3, 4:07 AM EST	Freeze Watch	MLB	24 hr
Feb 3, 5:07 AM EST	Fire Weather Watch	MLB	10 hr
Feb 3, 2:46 PM EST	Wind Chill Advisory	MLB	18 hr
Feb 3, 3:01 PM EST	Fire Weather Watch	MLB	13 hr
Feb 3, 3:01 PM EST	Red Flag Warning	MLB	27 hr
Feb 4, 3:48 AM EST	Fire Weather Watch	MLB	25 hr
Feb 4, 3:48 AM EST	Red Flag Warning	MLB	39 hr
Feb 4, 4:13 AM EST	Hard Freeze Warning	MLB	28 hr
Feb 4, 4:13 AM EST	Lake Wind Advisory	MLB	13 hr
Feb 4, 4:39 AM EST	Wind Chill Watch	MLB	8 hr
Feb 4, 12:47 PM EST	Wind Chill Warning	MLB	19 hr
Feb 4, 5:17 PM EST	Freeze Watch	MLB	20 hr
Feb 5, 4:26 AM EST	Freeze Warning	MLB	29 hr
Feb 5, 4:31 AM EST	Red Flag Warning	MLB	37 hr
Feb 13, 2:06 AM EST	Dense Fog Advisory	MLB	4 hr
Feb 13, 11:02 AM EST	Red Flag Warning	MLB	6 hr
Feb 13, 5:19 PM EST	Red Flag Warning	MLB	101 min
Feb 16, 2:47 AM EST	Red Flag Warning	MLB	15 hr
Feb 18, 3:22 AM EST	Red Flag Warning	MLB	15 hr
Feb 18, 1:44 PM EST	Fire Weather Watch	MLB	24 hr
Feb 19, 1:17 PM EST	Red Flag Warning	MLB	30 hr
Feb 21, 4:13 AM EST	Red Flag Warning	MLB	14 hr
Feb 22, 3:06 AM EST	Fire Weather Watch	MLB	24 hr
Feb 23, 3:34 AM EST	Red Flag Warning	MLB	14 hr
Feb 26, 2:13 PM EST	Red Flag Warning	MLB	4 hr
Feb 27, 2:34 PM EST	Fire Weather Watch	MLB	14 hr
Feb 28, 4:14 AM EST	Red Flag Warning	MLB	9 hr
Feb 28, 2:19 PM EST	Fire Weather Watch	MLB	24 hr
Mar 1, 5:21 AM EST	Lake Wind Advisory	MLB	13 hr
Mar 1, 2:00 PM EST	Wind Chill Advisory	MLB	18 hr
Mar 1, 2:13 PM EST	Fire Weather Watch	MLB	24 hr
Mar 1, 2:13 PM EST	Red Flag Warning	MLB	28 hr
Mar 2, 2:25 PM EST	Red Flag Warning	MLB	28 hr
Mar 20, 1:34 PM EDT	Red Flag Warning	MLB	5 hr
Mar 22, 11:33 AM EDT	Red Flag Warning	MLB	7 hr
Mar 28, 4:03 AM EDT	Lake Wind Advisory	MLB	14 hr
Mar 29, 2:47 AM EDT	Fire Weather Watch	MLB	23 hr
Mar 30, 2:08 AM EDT	Red Flag Warning	MLB	17 hr
Apr 3, 10:54 AM EDT	Mesoscale Discussion	SPC	2 hr
Apr 4, 4:58 AM EDT	Red Flag Warning	MLB	14 hr
Apr 5, 2:56 PM EDT	Fire Weather Watch	MLB	23 hr
Apr 6, 2:04 PM EDT	Fire Weather Watch	MLB	15 hr
Apr 6, 2:04 PM EDT	Red Flag Warning	MLB	30 hr
Apr 6, 3:09 PM EDT	Wind Advisory	MLB	5 hr
Apr 7, 4:23 AM EDT	Lake Wind Advisory	MLB	7 hr
Apr 7, 4:45 AM EDT	Red Flag Warning	MLB	38 hr
Apr 7, 11:33 AM EDT	Wind Advisory	MLB	8 hr
Apr 8, 4:01 AM EDT	Fire Weather Watch	MLB	27 hr
Apr 9, 7:09 AM EDT	Red Flag Warning	MLB	12 hr
Apr 14, 3:47 AM EDT	Wind Advisory	MLB	16 hr
Apr 14, 6:15 AM EDT	Tornado Watch	SPC	6 hr
Apr 14, 7:36 AM EDT	Mesoscale Discussion	SPC	54 min
Apr 14, 8:47 AM EDT	Mesoscale Discussion	SPC	88 min
Apr 14, 9:51 AM EDT	Severe Thunderstorm Warning	MLB	54 min
Apr 14, 10:24 AM EDT	Severe Thunderstorm Warning	MLB	51 min
Apr 14, 2:45 PM EDT	Fire Weather Watch	MLB	13 hr
Apr 15, 3:34 AM EDT	Red Flag Warning	MLB	15 hr
Apr 17, 7:42 AM EDT	Lake Wind Advisory	MLB	12 hr
Apr 20, 3:18 AM EDT	Fire Weather Watch	MLB	25 hr
Apr 21, 4:04 AM EDT	Red Flag Warning	MLB	15 hr
Apr 21, 1:49 PM EDT	Fire Weather Watch	MLB	14 hr
Apr 22, 4:17 AM EDT	Fire Weather Watch	MLB	10 hr
Apr 22, 4:17 AM EDT	Red Flag Warning	MLB	16 hr
Apr 22, 2:32 PM EDT	Fire Weather Watch	MLB	24 hr
Apr 22, 2:32 PM EDT	Red Flag Warning	MLB	29 hr
Apr 23, 2:05 PM EDT	Red Flag Warning	MLB	30 hr
May 6, 3:39 PM EDT	Fire Weather Watch	MLB	13 hr
May 7, 5:06 AM EDT	Red Flag Warning	MLB	15 hr
May 7, 2:52 PM EDT	Fire Weather Watch	MLB	14 hr
May 8, 4:22 AM EDT	Red Flag Warning	MLB	16 hr
May 9, 4:30 AM EDT	Red Flag Warning	MLB	16 hr
May 10, 4:02 AM EDT	Red Flag Warning	MLB	16 hr
May 11, 4:28 AM EDT	Red Flag Warning	MLB	16 hr
May 11, 3:46 PM EDT	Mesoscale Discussion	SPC	59 min
May 11, 5:48 PM EDT	Severe Thunderstorm Warning	MLB	16 min
May 12, 2:04 PM EDT	Mesoscale Discussion	SPC	56 min
May 12, 2:59 PM EDT	Severe Thunderstorm Warning	MLB	61 min
May 12, 4:09 PM EDT	Severe Thunderstorm Warning	MLB	40 min
May 19, 5:24 AM EDT	Lake Wind Advisory	MLB	14 hr
May 19, 9:05 AM EDT	Flood Watch	MLB	3 days
May 22, 12:27 PM EDT	Mesoscale Discussion	SPC	2 hr
May 22, 1:45 PM EDT	Tornado Warning	MLB	33 min
May 22, 2:58 PM EDT	Areal Flood Advisory	MLB	92 min
May 23, 8:05 PM EDT	Areal Flood Advisory	MLB	115 min
May 24, 11:17 AM EDT	Mesoscale Discussion	SPC	58 min
May 25, 5:12 PM EDT	Severe Thunderstorm Warning	MLB	21 min
May 25, 7:49 PM EDT	Areal Flood Advisory	MLB	56 min
May 26, 5:02 PM EDT	Severe Thunderstorm Warning	MLB	43 min
Jun 2, 3:32 PM EDT	Special Weather Statement	TBW	43 min
Jun 5, 2:57 PM EDT	Severe Thunderstorm Warning	MLB	43 min
Jun 6, 10:45 AM EDT	Mesoscale Discussion	SPC	90 min
Jun 6, 3:49 PM EDT	Severe Thunderstorm Warning	MLB	56 min
Jun 6, 4:10 PM EDT	Severe Thunderstorm Warning	MLB	65 min
Jun 6, 6:43 PM EDT	Areal Flood Advisory	MLB	2 hr
Jun 7, 12:44 PM EDT	Mesoscale Discussion	SPC	2 hr
Jun 16, 7:29 PM EDT	Severe Thunderstorm Warning	MLB	61 min
Jun 16, 8:33 PM EDT	Areal Flood Advisory	MLB	117 min
Jun 18, 11:49 AM EDT	Severe Thunderstorm Watch	SPC	7 hr
Jun 18, 3:00 PM EDT	Mesoscale Discussion	SPC	60 min
Jun 18, 3:13 PM EDT	Severe Thunderstorm Warning	MLB	62 min
Jun 18, 4:10 PM EDT	Severe Thunderstorm Warning	MLB	65 min
Jun 20, 2:41 AM EDT	Heat Advisory	MLB	15 hr
Jun 20, 4:28 PM EDT	Heat Advisory	MLB	28 hr
Jun 21, 8:16 PM EDT	Heat Advisory	MLB	24 hr
Jun 22, 12:25 PM EDT	Mesoscale Discussion	SPC	2 hr
Jun 22, 7:09 PM EDT	Severe Thunderstorm Watch	SPC	6 hr
Jun 22, 10:32 PM EDT	Mesoscale Discussion	SPC	58 min
Jun 23, 4:49 AM EDT	Mesoscale Discussion	SPC	56 min
Jun 23, 2:33 PM EDT	Severe Thunderstorm Watch	SPC	8 hr
Jun 23, 5:49 PM EDT	Areal Flood Advisory	MLB	116 min
Jul 10, 3:50 PM EDT	Severe Thunderstorm Warning	MLB	22 min
Jul 11, 6:45 PM EDT	Tornado Warning	MLB	35 min
Jul 11, 7:14 PM EDT	Areal Flood Advisory	MLB	2 hr
Jul 15, 7:07 PM EDT	Severe Thunderstorm Warning	MLB	53 min
Jul 15, 7:34 PM EDT	Areal Flood Advisory	MLB	86 min
Jul 18, 3:08 PM EDT	Severe Thunderstorm Warning	MLB	52 min
Jul 24, 7:15 PM EDT	Special Weather Statement	TBW	45 min
Jul 26, 6:24 PM EDT	Areal Flood Advisory	MLB	111 min
Jul 27, 3:18 PM EDT	Special Weather Statement	TBW	27 min
Jul 30, 2:04 PM EDT	Areal Flood Advisory	MLB	86 min
Aug 3, 7:13 PM EDT	Areal Flood Advisory	MLB	2 hr
Aug 4, 5:47 PM EDT	Severe Thunderstorm Warning	MLB	58 min
Aug 4, 6:31 PM EDT	Areal Flood Advisory	MLB	119 min
Sep 29, 3:44 AM EDT	Fire Weather Watch	MLB	24 hr
Sep 30, 4:06 AM EDT	Red Flag Warning	MLB	15 hr
Nov 8, 3:46 AM EST	Lake Wind Advisory	MLB	13 hr
Nov 9, 3:55 AM EST	Lake Wind Advisory	MLB	13 hr
Nov 26, 7:30 AM EST	Fire Weather Watch	MLB	7 hr
Nov 26, 2:33 PM EST	Fire Weather Watch	MLB	37 hr
Nov 26, 2:33 PM EST	Red Flag Warning	MLB	27 hr
Nov 28, 3:11 AM EST	Red Flag Warning	MLB	14 hr
Dec 2, 4:11 AM EST	Lake Wind Advisory	MLB	15 hr
Dec 2, 7:44 PM EST	Tornado Watch	SPC	8 hr
Dec 2, 10:08 PM EST	Mesoscale Discussion	SPC	97 min
Dec 14, 4:09 AM EST	Dense Fog Advisory	MLB	5 hr
Dec 14, 5:36 PM EST	Dense Fog Advisory	MLB	15 hr
Dec 15, 9:11 AM EST	Dense Fog Advisory	MLB	49 min
Dec 18, 4:35 AM EST	Lake Wind Advisory	MLB	13 hr
Dec 18, 5:12 PM EST	Tornado Warning	MLB	48 min
Dec 20, 3:15 AM EST	Fire Weather Watch	MLB	24 hr
Dec 21, 3:03 AM EST	Red Flag Warning	MLB	14 hr
Dec 28, 1:36 PM EST	Wind Chill Advisory	MLB	19 hr
Dec 28, 1:50 PM EST	Red Flag Warning	MLB	27 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	17
Tornado Warning	3
Severe Thunderstorm Watch	3
Tornado Watch	2
Mesoscale Discussion	14
Special Weather Statement	3
Flooding
Flood Watch	1
Areal Flood Advisory	12
Heat
Heat Advisory	3
Cold
Freeze Warning	4
Hard Freeze Warning	2
Wind Chill Warning	1
Freeze Watch	4
Wind Chill Watch	1
Wind Chill Advisory	6
Wind and dust
Lake Wind Advisory	12
Wind Advisory	3
Fire
Red Flag Warning	46
Fire Weather Watch	32
Fog and smoke
Dense Fog Advisory	5

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.