Alert archive / Massachusetts / Severe Thunderstorm Warnings in 2001
Severe Thunderstorm Warning 35, NWS Boston/Norton, MA
NWS Boston/Norton, MA issued this severe thunderstorm warning at Jun 30, 2001, 5:57 PM EDT for Worcester County, Massachusetts. It was in force for 48 min. 2 reports 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
- Jun 30, 2001, 5:57 PM EDT (21:57 UTC)
- Expired
- Jun 30, 2001, 6:45 PM EDT
- In force
- 48 min
- Issued by
- NWS Boston/Norton, MA
- Area
- Whole counties
County Worcester County, MA
The radar
The Boston radar (KBOX), 77 km from the middle of the area, began a volume at 21:58 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 |
|---|---|---|---|
| Jun 30, 6:20 PM EDT | Thunderstorm Wind 50 E | Shrewsbury, MA | |
| Jun 30, 6:30 PM EDT | Thunderstorm Wind 50 E | Westborough, 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 nearest sounding before it
Albany, NY (KALY), launched 12:00Z, 10.0 hours before the alert went out and 162 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
- 544 J/kg
- Mixed-layer CIN
- -80 J/kg
- Mixed-layer LCL
- 897 m above ground
- 0-6 km bulk shear
- 38 kt
- 0-1 km storm-relative helicity
- 110 m²/s²
- 0-3 km storm-relative helicity
- 144 m²/s²
- Significant tornado parameter
- -0.0
- Supercell composite
- -0.3
The text
As transmitted, in the capitals the NWS used until 2016.
000 WUUS51 KBOX 302159 SVRBOX MAC027-302245- BULLETIN - EAS ACTIVATION REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE TAUNTON MA 557 PM EDT SAT JUN 30 2001 THE NATIONAL WEATHER SERVICE IN TAUNTON HAS ISSUED A * SEVERE THUNDERSTORM WARNING FOR... CENTRAL WORCESTER COUNTY IN CENTRAL MASSACHUSETTS INCLUDING WARDWICK...LEOMINSTER...WORCESTER * UNTIL 645 PM EDT. * AT 552 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A LINE OF SEVERE THUNDERSTORMS FROM PALMER TO LEOMINSTER... MOVING EAST NEAR 45 MPH. * OTHER LOCATIONS IN THE WARNING AREA INCLUDE WESTBOROUGH...WEST BROOKFIELD...WEST BOYLSTON...STERLING...SPENCER...SHREWSBURY... RUTLAND...PRINCETON...PAXTON...OAKHAM...NORTHBOROUGH...NORTH BROOKFIELD...NEW BRAINTREE...LEICESTER...LANCASTER...HOLDEN... HARDWICK...EAST BROOKFIELD...CLINTON...BROOKFIELD...BOYLSTON... BERLIN...BARRE AND AUBURN. THESE STORM HAVE HAD A HISTORY OF PRODUCING LARGE HAIL AND DOWNING TREES AND POWERLINES. SEVERE THUNDERSTORMS PRODUCE LARGE HAIL AND WIND STRONG ENOUGH TO KNOCK DOWN TREES AND POWER LINES. MOVE INDOORS AND STAY AWAY FROM WINDOWS. $$ DRV/GF
The office that day
Everything else NWS Boston/Norton, MA issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jun 30, 4:19 PM EDT | Severe Thunderstorm Warning | BOX | Franklin, Hampshire | 41 min |
| Jun 30, 4:55 PM EDT | Severe Thunderstorm Warning | BOX | Hampden, Hampshire | 35 min |
| Jun 30, 5:02 PM EDT | Severe Thunderstorm Warning | BOX | Worcester | 43 min |
| Jun 30, 5:18 PM EDT | Severe Thunderstorm Warning | BOX | Essex, Middlesex | 42 min |
| Jun 30, 5:27 PM EDT | Severe Thunderstorm Warning | BOX | Essex | 48 min |
| Jun 30, 5:29 PM EDT | Severe Thunderstorm Warning | BOX | Hampden, Hampshire | 31 min |
| Jun 30, 6:01 PM EDT | Severe Thunderstorm Warning | BOX | Middlesex | 44 min |
| Jun 30, 6:07 PM EDT | Severe Thunderstorm Warning | BOX | Essex | 38 min |
| Jun 30, 6:42 PM EDT | Severe Thunderstorm Warning | BOX | Middlesex, Norfolk, Worcester | 48 min |
| Jun 30, 7:28 PM EDT | Severe Thunderstorm Warning | BOX | Bristol, Norfolk | 47 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.