Alert archive / Massachusetts / Severe Thunderstorm Warnings in 2003

Severe Thunderstorm Warning 25, NWS Boston/Norton, MA

August 22, 2003Middlesex County, Massachusetts

NWS Boston/Norton, MA issued this severe thunderstorm warning at Aug 22, 2003, 4:59 PM EDT for Middlesex County, Massachusetts. It was in force for 46 min. No storm report in the archive falls inside the area while it was in force.

The area

The outline as issued.

The facts

Issued: Aug 22, 2003, 4:59 PM EDT (20:59 UTC)
Expired: Aug 22, 2003, 5:45 PM EDT
In force: 46 min
Issued by: NWS Boston/Norton, MA
Area: Counties, with a storm outline in the text

County Middlesex County, MA

The radar

The Boston radar (KBOX), 92 km from the middle of the area, began a volume at 21:03 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
Aug 22, 1:15 PM EDT	Severe Thunderstorm Watch	SPC	7 hr

The nearest sounding before it

Gray, ME (KGYX), launched 12:00Z, 9.0 hours before the alert went out and 166 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: 0 J/kg
Mixed-layer CIN: No buoyant parcel
Mixed-layer LCL: 1651 m above ground
0-6 km bulk shear: 33 kt
0-1 km storm-relative helicity: -11 m²/s²
0-3 km storm-relative helicity: 47 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.

000 
WUUS51 KBOX 222059
SVRBOX
MAC017-NHC011-222145-

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE TAUNTON MA
459 PM EDT FRI AUG 22 2003

THE NATIONAL WEATHER SERVICE IN TAUNTON HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  NORTHERN MIDDLESEX COUNTY IN EASTERN MASSACHUSETTS
  SOUTHERN HILLSBOROUGH COUNTY IN SOUTHERN NEW HAMPSHIRE
  INCLUDING NASHUA

* UNTIL 545 PM.

* AT 458 PM...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM OVER HOLLIS...OR ABOUT 7 MILES SOUTHWEST OF
  NASHUA...MOVING EAST AT 35 MPH.

* THE SEVERE THUNDERSTORM WILL BE NEAR...
  NASHUA AND DUNSTABLE AROUND 510 PM
  TYNGSBORO AND HUDSON AROUND 515 PM
  PELHAM AND LOWELL AROUND 525 PM.

SEVERE THUNDERSTORMS PRODUCE LARGE HAIL AND/OR WIND STRONG ENOUGH TO
KNOCK DOWN TREES AND POWER LINES. MOVE INDOORS AND STAY AWAY FROM
WINDOWS.

IN ADDITION TO LARGE HAIL AND DAMAGING WIND...VERY FREQUENT
CLOUD-TO-GROUND LIGHTNING IS ALSO LIKELY WITH THIS STORM. GET AWAY
FROM OPEN FIELDS...BODIES OF WATER...AND TALL OBJECTS.

$$

LAT...LON 4277 7174 4263 7173 4264 7124 4282 7129

The office that day

Everything else NWS Boston/Norton, MA issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Aug 22, 4:08 PM EDT	Severe Thunderstorm Warning	BOX	Franklin, Hampshire, Worcester	52 min
Aug 22, 5:16 PM EDT	Severe Thunderstorm Warning	BOX	Middlesex, Worcester	44 min
Aug 22, 5:50 PM EDT	Special Marine Warning	BOX		115 min
Aug 22, 5:50 PM EDT	Special Marine Warning	BOX		115 min
Aug 22, 5:51 PM EDT	Special Marine Warning	BOX		22 hr
Aug 22, 5:51 PM EDT	Special Marine Warning	BOX		22 hr
Aug 22, 5:55 PM EDT	Severe Thunderstorm Warning	BOX	Middlesex, Norfolk, Suffolk, Worcester	65 min
Aug 22, 6:30 PM EDT	Flash Flood Warning	BOX	Middlesex, Norfolk, Suffolk	2 hr
Aug 22, 6:56 PM EDT	Severe Thunderstorm Warning	BOX	Bristol, Norfolk, Plymouth	49 min

Nearby

Severe Thunderstorm Warnings in Massachusetts, 2003 Every severe thunderstorm warning in 2003

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.