Alert archive / Massachusetts / Severe Thunderstorm Warnings in 2001

Severe Thunderstorm Warning 59, NWS Boston/Norton, MA

July 10, 2001Norfolk County, Worcester County, Massachusetts

NWS Boston/Norton, MA issued this severe thunderstorm warning at Jul 10, 2001, 6:16 PM EDT for Norfolk County, Worcester County, Massachusetts. It was in force for 44 min. No storm report in the archive falls inside the area while it was in force.

The area

The counties it named.

The facts

Issued: Jul 10, 2001, 6:16 PM EDT (22:16 UTC)
Expired: Jul 10, 2001, 7:00 PM EDT
In force: 44 min
Issued by: NWS Boston/Norton, MA
Area: Whole counties

Counties Norfolk County, MA, Worcester County, MA

The radar

The Boston radar (KBOX), 48 km from the middle of the area, began a volume at 22:18 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.

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, 10.3 hours before the alert went out and 146 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.

Skew-T log-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

The wind turning with height, colored by layer: ground to 1 km, 1 to 3 km, 3 to 6 km, 6 to 10 km.

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

Open this sounding in Storm Lab

The text

As transmitted, in the capitals the NWS used until 2016.

404 
WUUS51 KBOX 102216
SVRBOX
MAC021-027-102300-

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE TAUNTON MA
616 PM EDT TUE JUL 10 2001

THE NATIONAL WEATHER SERVICE IN TAUNTON HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  SOUTHEASTERN WORCESTER COUNTY IN CENTRAL MASSACHUSETTS
    INCLUDING MILFORD
  SOUTHWESTERN NORFOLK COUNTY IN EASTERN MASSACHUSETTS
    INCLUDING FRANKLIN

* UNTIL 700 PM EDT.

* AT 613 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM OVER DOUGLAS...OR ABOUT 11 MILES SOUTHWEST OF
  MILFORD...MOVING EAST AT 25 MPH.

* OTHER LOCATIONS IN THE WARNING AREA INCLUDE WRENTHAM...
  WHITINSVILLE...UXBRIDGE...UPTON...NORTHBRIDGE...NORFOLK...
  MILLVILLE...MILLIS...MENDON...MEDWAY...HOPEDALE AND BELLINGHAM.

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
NOTCHEY

The 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, 5:49 PM EDT	Severe Thunderstorm Warning	BOX	Middlesex	41 min

Nearby

Severe Thunderstorm Warnings in Massachusetts, 2001 Every 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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.