Alert archive / Pennsylvania / Delaware County / 2018
Weather alerts in Delaware County, Pennsylvania, May 2018
30 weather alerts in May 2018, from the National Weather Service and the Storm Prediction Center. An alert counts here when it covered this county.
- Alerts
- 30
- Warnings
- 9
- Watches
- 5
- Advisories
- 10
- Busiest day
- May 12, 20188 alerts
Over time
By day
Days in UTC, the clock the archive keeps.
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 |
|---|---|---|---|
| May 2, 3:42 AM EDT | Red Flag Warning | PHI | 17 hr |
| May 3, 3:35 AM EDT | Red Flag Warning | PHI | 16 hr |
| May 3, 6:03 PM EDT | Mesoscale Discussion | SPC | 2 hr |
| May 4, 10:28 PM EDT | Special Weather Statement | PHI | 62 min |
| May 12, 3:59 PM EDT | Mesoscale Discussion | SPC | 3 hr |
| May 12, 4:58 PM EDT | Tornado Watch | SPC | 5 hr |
| May 12, 7:00 PM EDT | Severe Thunderstorm Warning | PHI | 45 min |
| May 12, 7:10 PM EDT | Areal Flood Advisory | PHI | 2 hr |
| May 12, 7:16 PM EDT | Mesoscale Discussion | SPC | 59 min |
| May 12, 7:30 PM EDT | Severe Thunderstorm Warning | PHI | 45 min |
| May 12, 7:37 PM EDT | Areal Flood Advisory | PHI | 2 hr |
| May 12, 7:45 PM EDT | Severe Thunderstorm Warning | PHI | 45 min |
| May 12, 8:00 PM EDT | Areal Flood Advisory | PHI | 3 hr |
| May 13, 10:17 PM EDT | Special Weather Statement | PHI | 28 min |
| May 15, 3:40 AM EDT | Flash Flood Watch | PHI | 21 hr |
| May 15, 1:46 PM EDT | Severe Thunderstorm Watch | SPC | 9 hr |
| May 15, 3:33 PM EDT | Mesoscale Discussion | SPC | 117 min |
| May 15, 5:22 PM EDT | Severe Thunderstorm Warning | PHI | 38 min |
| May 15, 5:35 PM EDT | Areal Flood Advisory | PHI | 4 hr |
| May 15, 5:38 PM EDT | Severe Thunderstorm Warning | PHI | 67 min |
| May 15, 5:53 PM EDT | Severe Thunderstorm Warning | PHI | 52 min |
| May 16, 3:35 PM EDT | Flood Watch | PHI | 3 days |
| May 17, 2:32 AM EDT | Areal Flood Advisory | PHI | 4 hr |
| May 17, 6:29 AM EDT | Areal Flood Advisory | PHI | 2 hr |
| May 17, 10:04 AM EDT | River Flood Warning | PHI | 8 hr |
| May 18, 4:04 AM EDT | Coastal Flood Advisory | PHI | 27 hr |
| May 26, 11:38 PM EDT | Flash Flood Watch | PHI | 23 hr |
| May 27, 9:39 AM EDT | Areal Flood Advisory | PHI | 2 hr |
| May 27, 3:22 PM EDT | Coastal Flood Advisory | PHI | 12 hr |
| May 30, 4:43 AM EDT | Dense Fog Advisory | PHI | 4 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 | 6 |
| Severe Thunderstorm Watch | 1 |
| Tornado Watch | 1 |
| Mesoscale Discussion | 4 |
| Special Weather Statement | 2 |
| Flooding | |
| River Flood Warning | 1 |
| Flash Flood Watch | 2 |
| Flood Watch | 1 |
| Areal Flood Advisory | 7 |
| Fire | |
| Red Flag Warning | 2 |
| Fog and smoke | |
| Dense Fog Advisory | 1 |
| Coast and beach | |
| Coastal Flood Advisory | 2 |
Nearby
Alerts in force nowTornadoes on recordForecastThe radar archive20172019
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.