Alert archive / Massachusetts / Severe Thunderstorm Warnings in 2001
Severe Thunderstorm Warning 23, NWS Boston/Norton, MA
NWS Boston/Norton, MA issued this severe thunderstorm warning at Jun 20, 2001, 6:24 PM EDT for Hampden County, Massachusetts. It was in force for 51 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 20, 2001, 6:24 PM EDT (22:24 UTC)
- Expired
- Jun 20, 2001, 7:15 PM EDT
- In force
- 51 min
- Issued by
- NWS Boston/Norton, MA
- Area
- Whole counties
County Hampden County, MA
The radar
The Boston radar (KBOX), 125 km from the middle of the area, began a volume at 22:27 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 20, 6:25 PM EDT | Hail 1.75 | Ludlow, MA | |
| Jun 20, 6:32 PM EDT | Thunderstorm Wind 50 E | Wilbraham, 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 |
|---|---|---|---|
| Jun 20, 2:30 PM EDT | Severe Thunderstorm Watch | SPC | 7 hr |
The nearest sounding before it
Albany, NY (KALY), launched 12:00Z, 10.4 hours before the alert went out and 116 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
- 226 J/kg
- Mixed-layer CIN
- -207 J/kg
- Mixed-layer LCL
- 1047 m above ground
- 0-6 km bulk shear
- 52 kt
- 0-1 km storm-relative helicity
- 14 m²/s²
- 0-3 km storm-relative helicity
- 18 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.1
The text
As transmitted, in the capitals the NWS used until 2016.
000
WUUS51 KBOX 202227
SVRBOX
MAC013-202315-
BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE TAUNTON MA
624 PM EDT WED JUN 20 2001
THE NATIONAL WEATHER SERVICE IN TAUNTON HAS ISSUED A
* SEVERE THUNDERSTORM WARNING FOR...
EASTERN HAMPDEN COUNTY IN WESTERN MASSACHUSETTS
INCLUDING CHICOPEE...SPRINGFIELD
* UNTIL 715 PM EDT.
* AT 622 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
SEVERE THUNDERSTORM OVER LUDLOW...OR ABOUT 7 MILES NORTHEAST OF
SPRINGFIELD...MOVING NORTHEAST AT 35 MPH.
* OTHER LOCATIONS IN THE WARNING AREA INCLUDE WILBRAHAM AND PALMER.
DIME SIZED HAIL IS OCCURRING AT THIS TIME IN LUDLOW.
THIS THUNDERSTORM IS CAPABLE OF PRODUCING BOTH DAMAGING WIND AND HAIL
LARGE ENOUGH TO CAUSE SERIOUS INJURY AND SMASHED WINDOWS.
$$
JN/DRVThe office that day
Everything else NWS Boston/Norton, MA issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jun 20, 5:17 PM EDT | Severe Thunderstorm Warning | BOX | Hampden, Hampshire | 43 min |
| Jun 20, 6:00 PM EDT | Severe Thunderstorm Warning | BOX | Hampshire | 45 min |
| Jun 20, 6:23 PM EDT | Severe Thunderstorm Warning | BOX | Franklin, Hampshire, Worcester | 52 min |
| Jun 20, 7:13 PM EDT | Severe Thunderstorm Warning | BOX | Hampden, Worcester | 47 min |
| Jun 20, 7:37 PM EDT | Severe Thunderstorm Warning | BOX | Middlesex | 38 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.