Alert archive / Florida / Osceola County
Weather alerts in Osceola County, Florida, 2019
98 weather alerts in 2019, 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 2019. Tap one for its archive.
- Alerts
- 98
- Warnings
- 12
- Watches
- 4
- Advisories
- 21
- Busiest month
- June24 alerts
- Busiest day
- April 19, 20199 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 1 tornado warnings covering Osceola County in 2019 had a tornado report inside them.
Osceola County, 2019
| Warnings | With a report | False alarm ratio | Reports | Inside a warning | Mean lead time | |
|---|---|---|---|---|---|---|
| Tornado warnings | 1 | 0 | 100% | 0 | ||
| Severe thunderstorm warnings | 10 | 9 | 10% | 8 | 100% | 12 min |
| Flash flood warnings | 0 | 0 |
Each office's whole area, 2019
| Warnings | With a report | False alarm ratio | Reports | Inside a warning | Mean lead time | |
|---|---|---|---|---|---|---|
| NWS Melbourne, FL: tornado warnings | 8 | 0 | 100% | 2 | 0% | |
| NWS Melbourne, FL: severe thunderstorm warnings | 76 | 29 | 62% | 87 | 72% | 18 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, Eastern Time. Each opens its own page with the text, the map, the radar and the sounding.
| Issued | Product | Office | Lasted |
|---|---|---|---|
| Jan 1, 1:41 AM EST | Dense Fog Advisory | MLB | 6 hr |
| Jan 20, 2:30 AM EST | Lake Wind Advisory | MLB | 16 hr |
| Jan 24, 7:11 AM EST | Special Weather Statement | MLB | 64 min |
| Feb 25, 2:31 AM EST | Lake Wind Advisory | MLB | 15 hr |
| Mar 27, 4:07 AM EDT | Wind Advisory | MLB | 19 hr |
| Mar 27, 9:59 AM EDT | Mesoscale Discussion | SPC | 91 min |
| Mar 28, 3:29 AM EDT | Lake Wind Advisory | MLB | 17 hr |
| Apr 8, 5:46 PM EDT | Special Weather Statement | MLB | 29 min |
| Apr 8, 6:23 PM EDT | Special Weather Statement | MLB | 37 min |
| Apr 9, 1:56 PM EDT | Mesoscale Discussion | SPC | 2 hr |
| Apr 14, 3:23 AM EDT | Lake Wind Advisory | MLB | 17 hr |
| Apr 19, 3:55 AM EDT | Wind Advisory | MLB | 16 hr |
| Apr 19, 12:54 PM EDT | Special Weather Statement | MLB | 51 min |
| Apr 19, 1:20 PM EDT | Mesoscale Discussion | SPC | 85 min |
| Apr 19, 1:36 PM EDT | Severe Thunderstorm Watch | SPC | 8 hr |
| Apr 19, 3:14 PM EDT | Special Weather Statement | MLB | 31 min |
| Apr 19, 3:40 PM EDT | Mesoscale Discussion | SPC | 95 min |
| Apr 19, 4:00 PM EDT | Special Weather Statement | MLB | 45 min |
| Apr 19, 4:22 PM EDT | Severe Thunderstorm Warning | MLB | 23 min |
| Apr 19, 4:47 PM EDT | Special Weather Statement | MLB | 28 min |
| Apr 20, 12:09 PM EDT | Lake Wind Advisory | MLB | 6 hr |
| May 4, 2:05 PM EDT | Mesoscale Discussion | SPC | 2 hr |
| May 5, 11:59 AM EDT | Mesoscale Discussion | SPC | 2 hr |
| May 5, 1:24 PM EDT | Special Weather Statement | MLB | 96 min |
| May 5, 2:14 PM EDT | Severe Thunderstorm Warning | MLB | 31 min |
| May 5, 2:46 PM EDT | Special Weather Statement | MLB | 29 min |
| May 7, 4:09 PM EDT | Special Weather Statement | MLB | 36 min |
| May 13, 9:46 AM EDT | Mesoscale Discussion | SPC | 119 min |
| May 13, 1:16 PM EDT | Special Weather Statement | MLB | 44 min |
| May 14, 12:39 PM EDT | Severe Thunderstorm Warning | MLB | 34 min |
| Jun 1, 6:04 PM EDT | Special Weather Statement | TBW | 26 min |
| Jun 1, 6:42 PM EDT | Special Weather Statement | TBW | 33 min |
| Jun 1, 6:51 PM EDT | Areal Flood Advisory | MLB | 84 min |
| Jun 2, 2:51 PM EDT | Special Weather Statement | MLB | 39 min |
| Jun 6, 3:56 PM EDT | Special Weather Statement | MLB | 49 min |
| Jun 8, 4:22 PM EDT | Special Weather Statement | MLB | 53 min |
| Jun 9, 2:08 PM EDT | Special Weather Statement | MLB | 52 min |
| Jun 9, 2:30 PM EDT | Special Weather Statement | MLB | 60 min |
| Jun 11, 12:37 PM EDT | Special Weather Statement | MLB | 38 min |
| Jun 11, 1:16 PM EDT | Special Weather Statement | MLB | 29 min |
| Jun 12, 1:06 PM EDT | Severe Thunderstorm Warning | MLB | 54 min |
| Jun 12, 2:11 PM EDT | Special Weather Statement | MLB | 64 min |
| Jun 12, 2:43 PM EDT | Severe Thunderstorm Warning | MLB | 62 min |
| Jun 13, 12:41 PM EDT | Special Weather Statement | MLB | 64 min |
| Jun 15, 1:22 PM EDT | Special Weather Statement | MLB | 38 min |
| Jun 18, 1:57 PM EDT | Special Weather Statement | MLB | 63 min |
| Jun 19, 3:13 PM EDT | Severe Thunderstorm Warning | MLB | 47 min |
| Jun 19, 3:53 PM EDT | Severe Thunderstorm Warning | MLB | 67 min |
| Jun 19, 4:22 PM EDT | Special Weather Statement | MLB | 23 min |
| Jun 19, 5:13 PM EDT | Severe Thunderstorm Warning | MLB | 47 min |
| Jun 19, 5:18 PM EDT | Tornado Warning | MLB | 27 min |
| Jun 19, 6:14 PM EDT | Special Weather Statement | MLB | 61 min |
| Jun 25, 7:06 PM EDT | Severe Thunderstorm Warning | MLB | 27 min |
| Jun 26, 3:38 PM EDT | Special Weather Statement | MLB | 37 min |
| Jul 3, 4:34 AM EDT | Heat Advisory | MLB | 14 hr |
| Jul 3, 4:43 PM EDT | Special Weather Statement | MLB | 32 min |
| Jul 3, 5:23 PM EDT | Special Weather Statement | MLB | 37 min |
| Jul 6, 4:50 PM EDT | Special Weather Statement | MLB | 55 min |
| Jul 6, 5:33 PM EDT | Areal Flood Advisory | MLB | 57 min |
| Jul 8, 5:55 PM EDT | Areal Flood Advisory | MLB | 95 min |
| Jul 11, 4:31 PM EDT | Special Weather Statement | TBW | 29 min |
| Jul 11, 5:25 PM EDT | Special Weather Statement | MLB | 50 min |
| Jul 18, 5:06 PM EDT | Special Weather Statement | MLB | 39 min |
| Jul 18, 5:17 PM EDT | Special Weather Statement | MLB | 88 min |
| Jul 24, 12:53 PM EDT | Special Weather Statement | MLB | 37 min |
| Jul 28, 8:24 PM EDT | Severe Thunderstorm Warning | MLB | 36 min |
| Jul 28, 9:00 PM EDT | Special Weather Statement | MLB | 60 min |
| Jul 31, 2:11 PM EDT | Special Weather Statement | MLB | 49 min |
| Jul 31, 3:02 PM EDT | Special Weather Statement | MLB | 43 min |
| Aug 4, 2:49 PM EDT | Special Weather Statement | MLB | 41 min |
| Aug 5, 5:13 PM EDT | Special Weather Statement | MLB | 92 min |
| Aug 7, 4:25 PM EDT | Areal Flood Advisory | MLB | 69 min |
| Aug 8, 4:33 PM EDT | Special Weather Statement | MLB | 27 min |
| Aug 10, 3:37 AM EDT | Heat Advisory | MLB | 13 hr |
| Aug 17, 4:30 PM EDT | Special Weather Statement | MLB | 45 min |
| Aug 26, 6:36 PM EDT | Areal Flood Advisory | MLB | 114 min |
| Aug 31, 5:19 PM EDT | Tropical Storm Watch | MLB | 42 hr |
| Sep 1, 5:38 AM EDT | Tropical Storm Warning | MLB | 4 days |
| Sep 4, 11:29 AM EDT | Wind Advisory | MLB | 6 hr |
| Sep 19, 9:04 AM EDT | Lake Wind Advisory | MLB | 11 hr |
| Sep 20, 3:13 AM EDT | Lake Wind Advisory | MLB | 17 hr |
| Oct 18, 10:54 PM EDT | Mesoscale Discussion | SPC | 2 hr |
| Oct 19, 1:26 AM EDT | Mesoscale Discussion | SPC | 64 min |
| Oct 19, 1:52 AM EDT | Tornado Watch | SPC | 12 hr |
| Oct 19, 5:01 AM EDT | Mesoscale Discussion | SPC | 89 min |
| Oct 19, 6:30 AM EDT | Special Weather Statement | MLB | 45 min |
| Oct 19, 8:49 AM EDT | Mesoscale Discussion | SPC | 86 min |
| Oct 19, 8:52 AM EDT | Areal Flood Advisory | MLB | 113 min |
| Oct 19, 10:41 AM EDT | Special Weather Statement | MLB | 34 min |
| Oct 19, 11:17 AM EDT | Mesoscale Discussion | SPC | 58 min |
| Dec 11, 5:38 AM EST | Dense Fog Advisory | MLB | 4 hr |
| Dec 14, 3:17 AM EST | Mesoscale Discussion | SPC | 2 hr |
| Dec 14, 3:47 AM EST | Severe Thunderstorm Watch | SPC | 6 hr |
| Dec 14, 6:42 AM EST | Mesoscale Discussion | SPC | 2 hr |
| Dec 14, 7:23 AM EST | Special Weather Statement | MLB | 52 min |
| Dec 14, 8:14 AM EST | Special Weather Statement | MLB | 61 min |
| Dec 17, 3:04 PM EST | Mesoscale Discussion | SPC | 116 min |
| Dec 29, 12:35 AM EST | Areal Flood Advisory | MLB | 85 min |
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 | 10 |
| Tornado Warning | 1 |
| Severe Thunderstorm Watch | 2 |
| Tornado Watch | 1 |
| Mesoscale Discussion | 15 |
| Special Weather Statement | 46 |
| Flooding | |
| Areal Flood Advisory | 7 |
| Heat | |
| Heat Advisory | 2 |
| Wind and dust | |
| Lake Wind Advisory | 7 |
| Wind Advisory | 3 |
| Fog and smoke | |
| Dense Fog Advisory | 2 |
| Tropical | |
| Tropical Storm Warning | 1 |
| Tropical Storm Watch | 1 |
The busiest days
Days with the most alerts issued, by UTC date.
Nearby
Alerts in force nowTornadoes on recordForecastThe radar archive20182020
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.