Alert archive / Massachusetts / Severe Thunderstorm Warnings in 2001
Severe Thunderstorm Warning 57, NWS Boston/Norton, MA
NWS Boston/Norton, MA issued this severe thunderstorm warning at Jul 10, 2001, 5:49 PM EDT for Middlesex County, Massachusetts. It was in force for 41 min. 1 report came from inside the area while it was in force.
The area
The counties it named, with what was reported inside it.
The facts
- Issued
- Jul 10, 2001, 5:49 PM EDT (21:49 UTC)
- Expired
- Jul 10, 2001, 6:30 PM EDT
- In force
- 41 min
- Issued by
- NWS Boston/Norton, MA
- Area
- Whole counties
County Middlesex County, MA
The radar
The Boston radar (KBOX), 63 km from the middle of the area, began a volume at 21:53 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 was reported inside it
| Time | Report | Where | Remark |
|---|---|---|---|
| Jul 10, 6:00 PM EDT | Thunderstorm Wind 50 E | Marlborough, MA |
NCEI Storm Data entries that began inside the alert's area while it was in force. Before 2003 the local storm report archive is thin, so this is the record of what happened rather than what was phoned in.
The watch it was issued in
The SPC watch in force over the same counties when this warning went out.
| Issued | Product | Office | Lasted |
|---|---|---|---|
| Jul 10, 3:00 PM EDT | Severe Thunderstorm Watch | SPC | 5 hr |
The nearest sounding before it
Chatham, MA (KCHH), launched 12:00Z, 9.8 hours before the alert went out and 148 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
- 128 J/kg
- Mixed-layer CIN
- -168 J/kg
- Mixed-layer LCL
- 1264 m above ground
- 0-6 km bulk shear
- 28 kt
- 0-1 km storm-relative helicity
- 37 m²/s²
- 0-3 km storm-relative helicity
- 81 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
458
WUUS51 KBOX 102149
SVRBOX
MAC017-102230-
BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE TAUNTON MA
549 PM EDT TUE JUL 10 2001
THE NATIONAL WEATHER SERVICE IN TAUNTON HAS ISSUED A
* SEVERE THUNDERSTORM WARNING FOR...
SOUTHERN MIDDLESEX COUNTY IN EASTERN MASSACHUSETTS
INCLUDING FRAMINGHAM...WALTHAM
* UNTIL 630 PM EDT.
* AT 548 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
SEVERE THUNDERSTORM OVER MARLBOROUGH...OR ABOUT 8 MILES WEST OF
FRAMINGHAM...MOVING EAST AT 30 MPH.
* OTHER LOCATIONS IN THE WARNING AREA INCLUDE WESTON...WAYLAND...
SUDBURY...LINCOLN...HOPKINTON AND ASHLAND.
SEVERE THUNDERSTORMS PRODUCE LARGE HAIL AND/OR WIND STRONG ENOUGH TO
KNOCK DOWN TREES AND POWER LINES. MOVE INDOORS AND STAY AWAY FROM
WINDOWS.
$$
DUNHAM
NOTCHEYThe office that day
Everything else NWS Boston/Norton, MA issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 10, 3:50 PM EDT | Severe Thunderstorm Warning | BOX | Hampshire | 40 min |
| Jul 10, 4:30 PM EDT | Severe Thunderstorm Warning | BOX | Hampden, Hampshire | 30 min |
| Jul 10, 4:52 PM EDT | Severe Thunderstorm Warning | BOX | Worcester | 38 min |
| Jul 10, 5:13 PM EDT | Severe Thunderstorm Warning | BOX | Hampden, Hampshire | 47 min |
| Jul 10, 5:29 PM EDT | Severe Thunderstorm Warning | BOX | Worcester | 46 min |
| Jul 10, 6:16 PM EDT | Severe Thunderstorm Warning | BOX | Norfolk, Worcester | 44 min |
Nearby
Severe Thunderstorm Warnings in Massachusetts, 2001Every severe thunderstorm warning in 2001
Sources
The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; verification from NCEI's Storm Data; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.