Alert archive / Massachusetts / Severe Thunderstorm Warnings in 2015
Severe Thunderstorm Warning 9, NWS Boston/Norton, MA
NWS Boston/Norton, MA issued this severe thunderstorm warning at May 28, 2015, 3:59 PM EDT for Franklin County, Worcester County, Massachusetts. It was in force for 46 min. 2 reports came from inside the area while it was in force.
The area
The outline as issued, with what was reported inside it.
The facts
- Issued
- May 28, 2015, 3:59 PM EDT (19:59 UTC)
- Expired
- May 28, 2015, 4:45 PM EDT
- In force
- 46 min
- Issued by
- NWS Boston/Norton, MA
- Area
- Storm-based polygon
Counties Franklin County, MA, Worcester County, MA
The radar
The Boston radar (KBOX), 93 km from the middle of the area, began a volume at 19:59 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 |
|---|---|---|---|
| May 28, 4:18 PM EDT | HAIL 0.75 | Gardner, MA | DIME SIZE HAIL |
| May 28, 4:26 PM EDT | HAIL 0.75 | Gardner, MA | COVERED THE GROUND. |
Local storm reports filed while the alert was in force, from inside its polygon or its counties.
The watch it was issued in
The SPC watch in force over the same counties when this warning went out.
| Issued | Product | Office | Lasted |
|---|---|---|---|
| May 28, 11:54 AM EDT | Severe Thunderstorm Watch | SPC | 7 hr |
The nearest sounding before it
Albany, NY (KALY), launched 12:00Z, 8.0 hours before the alert went out and 154 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
- 153 J/kg
- Mixed-layer CIN
- -96 J/kg
- Mixed-layer LCL
- 670 m above ground
- 0-6 km bulk shear
- 49 kt
- 0-1 km storm-relative helicity
- 171 m²/s²
- 0-3 km storm-relative helicity
- 177 m²/s²
- Significant tornado parameter
- 0.1
- Supercell composite
- 0.8
The text
As transmitted, in the capitals the NWS used until 2016.
496 WUUS51 KBOX 281959 SVRBOX MAC011-027-282045- /O.NEW.KBOX.SV.W.0009.150528T1959Z-150528T2045Z/ BULLETIN - IMMEDIATE BROADCAST REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE TAUNTON MA 359 PM EDT THU MAY 28 2015 THE NATIONAL WEATHER SERVICE IN TAUNTON HAS ISSUED A * SEVERE THUNDERSTORM WARNING FOR... NORTHERN WORCESTER COUNTY IN CENTRAL MASSACHUSETTS... EAST CENTRAL FRANKLIN COUNTY IN WESTERN MASSACHUSETTS... * UNTIL 445 PM EDT * AT 358 PM EDT...DOPPLER RADAR INDICATED A SEVERE THUNDERSTORM CAPABLE OF PRODUCING QUARTER SIZE HAIL AND DAMAGING WINDS IN EXCESS OF 60 MPH. THIS STORM WAS LOCATED OVER PHILLIPSTON...OR 7 MILES SOUTHEAST OF ORANGE...AND WAS MOVING EAST AT 35 MPH. * SOME LOCATIONS IMPACTED INCLUDE... LEOMINSTER...FITCHBURG...ORANGE...GARDNER...ATHOL...WINCHENDON... LUNENBURG...LANCASTER...TEMPLETON...STERLING...WESTMINSTER... ASHBURNHAM...BARRE...HUBBARDSTON...PRINCETON...SHUTESBURY... PHILLIPSTON...PELHAM...ROYALSTON AND PETERSHAM. PRECAUTIONARY/PREPAREDNESS ACTIONS... SEVERE THUNDERSTORMS PRODUCE DAMAGING WINDS AND LARGE HAIL. GO INDOORS AND STAY AWAY FROM WINDOWS. DRIVERS SHOULD PREPARE FOR LOW VISIBILITY AND AVOID FLOODED ROADS. && LAT...LON 4247 7167 4241 7245 4263 7231 4263 7173 TIME...MOT...LOC 1958Z 260DEG 31KT 4254 7218 $$ FRANK
The office that day
Everything else NWS Boston/Norton, MA issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| May 28, 4:03 AM EDT | Small Craft Advisory | BOX | 18 hr | |
| May 28, 2:01 PM EDT | Special Weather Statement | BOX | Franklin | 29 min |
| May 28, 2:12 PM EDT | Special Weather Statement | BOX | Franklin | 48 min |
| May 28, 2:31 PM EDT | Severe Thunderstorm Warning | BOX | Franklin, Hampshire | 44 min |
| May 28, 2:44 PM EDT | Special Weather Statement | BOX | Hampshire | 46 min |
| May 28, 2:58 PM EDT | Special Weather Statement | BOX | Franklin | 47 min |
| May 28, 3:15 PM EDT | Severe Thunderstorm Warning | BOX | Franklin, Hampshire, Worcester | 45 min |
| May 28, 3:28 PM EDT | Special Weather Statement | BOX | Hampshire | 47 min |
| May 28, 3:44 PM EDT | Severe Thunderstorm Warning | BOX | Franklin, Middlesex, Worcester | 46 min |
| May 28, 4:03 PM EDT | Severe Thunderstorm Warning | BOX | Franklin, Hampshire | 27 min |
| May 28, 4:10 PM EDT | Severe Thunderstorm Warning | BOX | Franklin, Hampshire, Worcester | 50 min |
| May 28, 4:45 PM EDT | Severe Thunderstorm Warning | BOX | Essex, Middlesex | 45 min |
| May 28, 4:48 PM EDT | Severe Thunderstorm Warning | BOX | Franklin, Hampden, Hampshire, Middlesex, Worcester | 57 min |
| May 28, 4:49 PM EDT | Special Marine Warning | BOX | 86 min | |
| May 28, 4:54 PM EDT | Special Weather Statement | BOX | Hampden | 51 min |
| May 28, 5:40 PM EDT | Severe Thunderstorm Warning | BOX | Essex | 35 min |
| May 28, 5:42 PM EDT | Special Marine Warning | BOX | 48 min | |
| May 28, 5:48 PM EDT | Special Weather Statement | BOX | Middlesex | 27 min |
| May 28, 5:56 PM EDT | Severe Thunderstorm Warning | BOX | Essex, Middlesex, Suffolk | 49 min |
| May 28, 6:01 PM EDT | Special Marine Warning | BOX | 59 min | |
| May 28, 6:13 PM EDT | Special Weather Statement | BOX | Worcester | 32 min |
| May 28, 6:30 PM EDT | Special Weather Statement | BOX | Norfolk | 30 min |
| May 28, 6:55 PM EDT | Special Weather Statement | BOX | Suffolk | 35 min |
Nearby
Severe Thunderstorm Warnings in Massachusetts, 2015Every severe thunderstorm warning in 2015
Sources
The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.