Alert archive / Massachusetts / Severe Thunderstorm Watches in 2016
Severe Thunderstorm Watch 31
The Storm Prediction Center issued this severe thunderstorm watch at Feb 24, 2016, 11:51 PM EST for Capitol Planning Region, Northwest Hills Planning Region, Northeastern Connecticut Planning Region, Connecticut; 5 counties in Massachusetts; Columbia County, Dutchess County, Rensselaer County, New York. It was in force for 4 hr.
The area
The outline as issued.
The facts
- Issued
- Feb 24, 2016, 11:51 PM EST (04:51 UTC)
- Expired
- Feb 25, 2016, 4:00 AM EST
- In force
- 4 hr
- Issued by
- the Storm Prediction Center
- Largest hail expected
- 0.5 in
- Strongest gust expected
- 65 kt
Counties Capitol Planning Region, CT, Northeastern Connecticut Planning Region, CT, Northwest Hills Planning Region, CT, Berkshire County, MA, Franklin County, MA, Hampden County, MA, Hampshire County, MA, Worcester County, MA, Columbia County, NY, Dutchess County, NY, Rensselaer County, NY
The radar
The Albany radar (KENX), 107 km from the middle of the area, began a volume at 04:52 UTC, the scan nearest the moment this went out.
Open the radar archive at this moment
The archived warnings, watches and discussions in force at that minute are drawn over the scan, this one among them.
What SPC expected
The probabilities SPC published with the watch, for the watch area over its life.
- Two or more tornadoes
- 10%
- One or more EF2 to EF5 tornadoes
- 2%
- Ten or more severe wind reports
- 50%
- One or more gusts of 65 knots or more
- 30%
- Ten or more severe hail reports
- 5%
- One or more hailstones of 2 inches or more
- 5%
- Six or more combined severe hail and wind reports
- 70%
Warnings issued inside it
8 tornado, severe thunderstorm and flash flood warnings for its counties while it was in force.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Feb 24, 11:57 PM EST | Severe Thunderstorm Warning | ALY | Northwest Hills Planning Region | 63 min |
| Feb 25, 12:19 AM EST | Severe Thunderstorm Warning | BOX | Capitol Planning Region | 41 min |
| Feb 25, 12:25 AM EST | Severe Thunderstorm Warning | BOX | Capitol Planning Region | 35 min |
| Feb 25, 12:55 AM EST | Severe Thunderstorm Warning | BOX | Capitol Planning Region | 50 min |
| Feb 25, 12:58 AM EST | Severe Thunderstorm Warning | BOX | Capitol Planning Region | 62 min |
| Feb 25, 1:54 AM EST | Severe Thunderstorm Warning | BOX | Capitol Planning Region, Northeastern Connecticut Planning Region | 51 min |
| Feb 25, 1:57 AM EST | Severe Thunderstorm Warning | BOX | Hampden, Middlesex, Worcester | 48 min |
| Feb 25, 2:40 AM EST | Severe Thunderstorm Warning | BOX | Bristol, Essex, Middlesex, Norfolk, Worcester | 50 min |
Discussions around it
SPC mesoscale discussions over the same counties from four hours before the watch to its end.
The nearest sounding before it
Albany, NY (KALY), launched 00:00Z, 4.9 hours before the alert went out and 92 km from the middle of its area. This is the routine balloon launch nearest before it, the air the forecaster had in hand, not a measurement taken for the alert.
- Mixed-layer CAPE
- 0 J/kg
- Mixed-layer CIN
- No buoyant parcel
- Mixed-layer LCL
- 536 m above ground
- 0-6 km bulk shear
- 44 kt
- 0-1 km storm-relative helicity
- 534 m²/s²
- 0-3 km storm-relative helicity
- 635 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.2
SPC that day
Everything else SPC issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Feb 24, 7:44 PM EST | Severe Thunderstorm Watch | SPC | Greater Bridgeport Planning Region, Lower Connecticut River Valley Planning Region, Naugatuck Valley Planning Region, Southeastern Connecticut Planning Region | 8 hr |
| Feb 24, 10:39 PM EST | Mesoscale Discussion | SPC | 66 min | |
| Feb 25, 2:40 AM EST | Mesoscale Discussion | SPC | 95 min | |
| Feb 25, 1:22 AM EST | Severe Thunderstorm Watch | SPC | Barnstable, Bristol, Dukes, Essex, Middlesex, Nantucket and 3 more | 4 hr |
Nearby
Severe Thunderstorm Watches in Massachusetts, 2016Severe Thunderstorm Watches in Connecticut, 2016Severe Thunderstorm Watches in New York, 2016Every severe thunderstorm watch in 2016
Sources
The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.