Alert archive / Pennsylvania / Montgomery County / 2011
Weather alerts in Montgomery County, Pennsylvania, May 2011
25 weather alerts in May 2011, from the National Weather Service and the Storm Prediction Center. An alert counts here when it covered this county.
- Alerts
- 25
- Warnings
- 2
- Watches
- 1
- Advisories
- 4
- Busiest day
- May 19, 20117 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 3, 9:43 PM EDT | Special Weather Statement | PHI | 47 min |
| May 7, 4:29 PM EDT | Special Weather Statement | PHI | 91 min |
| May 7, 5:20 PM EDT | Special Weather Statement | PHI | 85 min |
| May 14, 11:46 PM EDT | Special Weather Statement | PHI | 89 min |
| May 15, 12:52 AM EDT | Special Weather Statement | PHI | 83 min |
| May 15, 7:28 PM EDT | Special Weather Statement | PHI | 62 min |
| May 15, 9:04 PM EDT | Special Weather Statement | PHI | 56 min |
| May 15, 9:53 PM EDT | Special Weather Statement | PHI | 67 min |
| May 15, 10:12 PM EDT | Special Weather Statement | PHI | 63 min |
| May 15, 10:16 PM EDT | Areal Flood Advisory | PHI | 3 hr |
| May 15, 10:52 PM EDT | Special Weather Statement | PHI | 53 min |
| May 15, 11:14 PM EDT | Areal Flood Advisory | PHI | 3 hr |
| May 18, 1:01 PM EDT | Special Weather Statement | PHI | 59 min |
| May 18, 1:52 PM EDT | Tornado Warning | PHI | 24 min |
| May 18, 2:34 PM EDT | Mesoscale Discussion | SPC | 56 min |
| May 18, 3:05 PM EDT | Areal Flood Advisory | PHI | 115 min |
| May 18, 3:08 PM EDT | Mesoscale Discussion | SPC | 67 min |
| May 19, 10:47 AM EDT | Mesoscale Discussion | SPC | 88 min |
| May 19, 12:20 PM EDT | Severe Thunderstorm Watch | SPC | 8 hr |
| May 19, 2:17 PM EDT | Mesoscale Discussion | SPC | 58 min |
| May 19, 3:01 PM EDT | Areal Flood Advisory | PHI | 3 hr |
| May 19, 3:15 PM EDT | Special Weather Statement | PHI | 60 min |
| May 19, 5:02 PM EDT | Mesoscale Discussion | SPC | 58 min |
| May 19, 7:23 PM EDT | Areal Flood Warning | PHI | 82 min |
| May 23, 6:21 PM EDT | Special Weather Statement | PHI | 54 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 | |
| Tornado Warning | 1 |
| Severe Thunderstorm Watch | 1 |
| Mesoscale Discussion | 5 |
| Special Weather Statement | 13 |
| Flooding | |
| Areal Flood Warning | 1 |
| Areal Flood Advisory | 4 |
Nearby
Alerts in force nowTornadoes on recordForecastThe radar archive20102012
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.