Alert archive / Maine / Severe Thunderstorm Watches in 2007
Severe Thunderstorm Watch 462
The Storm Prediction Center issued this severe thunderstorm watch at Jun 28, 2007, 2:54 PM EDT for 7 states. It was in force for 6 hr.
The area
The outline as issued.
The facts
- Issued
- Jun 28, 2007, 2:54 PM EDT (18:54 UTC)
- Expired
- Jun 28, 2007, 9:19 PM EDT
- In force
- 6 hr
- Issued by
- the Storm Prediction Center
- Largest hail expected
- 1.5 in
- Strongest gust expected
- 60 kt
All 60 counties
Capitol Planning Region, CT, Greater Bridgeport Planning Region, CT, Lower Connecticut River Valley Planning Region, CT, Naugatuck Valley Planning Region, CT, Northeastern Connecticut Planning Region, CT, Northwest Hills Planning Region, CT, Southeastern Connecticut Planning Region, CT, Berkshire County, MA, Bristol County, MA, Essex County, MA, Hampden County, MA, Middlesex County, MA, Norfolk County, MA, Plymouth County, MA, Suffolk County, MA, Worcester County, MA, Androscoggin County, ME, Cumberland County, ME, Franklin County, ME, Hancock County, ME, Kennebec County, ME, Knox County, ME, Lincoln County, ME, Oxford County, ME, Penobscot County, ME, Piscataquis County, ME, Sagadahoc County, ME, Somerset County, ME, Waldo County, ME, Washington County, ME, York County, ME, Belknap County, NH, Carroll County, NH, Hillsborough County, NH, Merrimack County, NH, Rockingham County, NH, Strafford County, NH, Bergen County, NJ, Essex County, NJ, Hudson County, NJ, Passaic County, NJ, Union County, NJ, Bronx County, NY, Columbia County, NY, Dutchess County, NY, Kings County, NY, Nassau County, NY, New York County, NY, Orange County, NY, Putnam County, NY, Queens County, NY, Richmond County, NY, Rockland County, NY, Ulster County, NY, Westchester County, NY, Bristol County, RI, Kent County, RI, Newport County, RI, Providence County, RI, Washington County, RI
The radar
The Boston radar (KBOX), 99 km from the middle of the area, began a volume at 18:56 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
- 20%
- One or more EF2 to EF5 tornadoes
- 5%
- Ten or more severe wind reports
- 30%
- One or more gusts of 65 knots or more
- 30%
- Ten or more severe hail reports
- 30%
- One or more hailstones of 2 inches or more
- 20%
- Six or more combined severe hail and wind reports
- 70%
Warnings issued inside it
15 tornado, severe thunderstorm and flash flood warnings for its counties while it was in force.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jun 28, 3:20 PM EDT | Severe Thunderstorm Warning | ALY | Northwest Hills Planning Region | 40 min |
| Jun 28, 3:21 PM EDT | Severe Thunderstorm Warning | GYX | Lincoln | 34 min |
| Jun 28, 3:32 PM EDT | Severe Thunderstorm Warning | OKX | Kings, Nassau, Queens | 28 min |
| Jun 28, 3:48 PM EDT | Severe Thunderstorm Warning | BOX | Plymouth | 32 min |
| Jun 28, 3:56 PM EDT | Severe Thunderstorm Warning | ALY | Dutchess | 64 min |
| Jun 28, 4:13 PM EDT | Severe Thunderstorm Warning | BOX | Worcester | 47 min |
| Jun 28, 4:46 PM EDT | Severe Thunderstorm Warning | BOX | Providence | 44 min |
| Jun 28, 5:29 PM EDT | Severe Thunderstorm Warning | BOX | Norfolk, Suffolk | 41 min |
| Jun 28, 5:30 PM EDT | Severe Thunderstorm Warning | BOX | Bristol | 30 min |
| Jun 28, 6:04 PM EDT | Severe Thunderstorm Warning | BOX | Bristol, Plymouth | 56 min |
| Jun 28, 6:16 PM EDT | Flash Flood Warning | OKX | Westchester | 119 min |
| Jun 28, 7:03 PM EDT | Flash Flood Warning | OKX | Nassau | 87 min |
| Jun 28, 7:06 PM EDT | Severe Thunderstorm Warning | OKX | Nassau, Suffolk | 24 min |
| Jun 28, 7:33 PM EDT | Severe Thunderstorm Warning | BOX | Kent, Providence | 57 min |
| Jun 28, 7:44 PM EDT | Severe Thunderstorm Warning | BOX | Plymouth | 19 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
Chatham, MA (KCHH), launched 12:00Z, 6.9 hours before the alert went out and 187 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
- 4 J/kg
- Mixed-layer CIN
- -285 J/kg
- Mixed-layer LCL
- 1089 m above ground
- 0-6 km bulk shear
- 15 kt
- 0-1 km storm-relative helicity
- 79 m²/s²
- 0-3 km storm-relative helicity
- 66 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
SPC that day
Everything else SPC issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jun 27, 10:03 PM EDT | Mesoscale Discussion | SPC | 57 min | |
| Jun 28, 12:52 PM EDT | Mesoscale Discussion | SPC | 83 min | |
| Jun 28, 4:04 PM EDT | Mesoscale Discussion | SPC | 86 min | |
| Jun 27, 9:07 PM EDT | Mesoscale Discussion | SPC | Androscoggin, Cumberland, Franklin, Hancock, Kennebec, Knox and 9 more | 53 min |
| Jun 28, 12:37 AM EDT | Mesoscale Discussion | SPC | Franklin, Oxford | 53 min |
| Jun 28, 2:07 PM EDT | Severe Thunderstorm Watch | SPC | Atlantic, Burlington, Camden, Cape May, Cumberland, Gloucester and 10 more | 8 hr |
| Jun 28, 7:30 PM EDT | Mesoscale Discussion | SPC | Atlantic, Bergen, Burlington, Camden, Cape May, Cumberland and 13 more | 60 min |
Nearby
Severe Thunderstorm Watches in Maine, 2007Severe Thunderstorm Watches in New York, 2007Severe Thunderstorm Watches in Massachusetts, 2007Every severe thunderstorm watch in 2007
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.