Alert archive / Massachusetts / Tornado Warnings in 2018
Tornado Warning 7, NWS Boston/Norton, MA
NWS Boston/Norton, MA issued this tornado warning at Aug 3, 2018, 5:20 PM EDT for Franklin County, Worcester County, Massachusetts. It was in force for 25 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 3, 2018, 5:20 PM EDT (21:20 UTC)
- Expired
- Aug 3, 2018, 5:45 PM EDT
- In force
- 25 min
- Issued by
- NWS Boston/Norton, MA
- Area
- Storm-based polygon
- Tornado
- Radar indicated
- Hail
- 0.0 in
Counties Franklin County, MA, Worcester County, MA
The radar
The Boston radar (KBOX), 121 km from the middle of the area, began a volume at 21:21 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 nearest sounding before it
Albany, NY (KALY), launched 12:00Z, 9.3 hours before the alert went out and 131 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
- 98 J/kg
- Mixed-layer CIN
- -31 J/kg
- Mixed-layer LCL
- 716 m above ground
- 0-6 km bulk shear
- 49 kt
- 0-1 km storm-relative helicity
- 29 m²/s²
- 0-3 km storm-relative helicity
- 54 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.5
The text
As transmitted.
892
WFUS51 KBOX 032120
TORBOX
MAC011-027-032145-
/O.NEW.KBOX.TO.W.0007.180803T2120Z-180803T2145Z/
BULLETIN - EAS ACTIVATION REQUESTED
Tornado Warning
National Weather Service Boston/Norton MA
520 PM EDT FRI AUG 3 2018
The National Weather Service in Boston/Norton has issued a
* Tornado Warning for...
Northwestern Worcester County in central Massachusetts...
Northeastern Franklin County in western Massachusetts...
* Until 545 PM EDT.
* At 520 PM EDT, a severe thunderstorm capable of producing a tornado
was located over Erving, or near Orange, moving northeast at 35
mph.
HAZARD...Tornado.
SOURCE...Radar indicated rotation.
IMPACT...Flying debris will be dangerous to those caught without
shelter. Mobile homes will be damaged or destroyed.
Damage to roofs, windows, and vehicles will occur. Tree
damage is likely.
* This dangerous storm will be near...
Warwick around 525 PM EDT.
Orange around 535 PM EDT.
Fitzwilliam, Royalston and Fitzwilliam around 545 PM EDT.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
TAKE COVER NOW! Move to a basement or an interior room on the lowest
floor of a sturdy building. Avoid windows. If you are outdoors, in a
mobile home, or in a vehicle, move to the closest substantial shelter
and protect yourself from flying debris.
&&
LAT...LON 4272 7203 4271 7199 4257 7244 4264 7249
4272 7239
TIME...MOT...LOC 2120Z 235DEG 29KT 4263 7240
TORNADO...RADAR INDICATED
HAIL...0.00IN
$$
Sipprell1 follow-up statement
799
WWUS51 KBOX 032144
SVSBOX
Severe Weather Statement
National Weather Service Boston/Norton MA
544 PM EDT FRI AUG 3 2018
MAC011-027-032153-
/O.EXP.KBOX.TO.W.0007.000000T0000Z-180803T2145Z/
Worcester MA-Franklin MA-
544 PM EDT FRI AUG 3 2018
...THE TORNADO WARNING FOR NORTHWESTERN WORCESTER AND NORTHEASTERN
FRANKLIN COUNTIES WILL EXPIRE AT 545 PM EDT...
The storm which prompted the warning has weakened below severe
limits, and no longer appears capable of producing a tornado.
Therefore, the warning will be allowed to expire.
LAT...LON 4272 7203 4271 7199 4257 7244 4264 7249
4272 7239
TIME...MOT...LOC 2143Z 270DEG 29KT 4274 7219
$$
SipprellThe office that day
Everything else NWS Boston/Norton, MA issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 3, 3:30 AM EDT | Heat Advisory | BOX | Bristol, Essex, Middlesex, Norfolk, Plymouth, Suffolk | 15 hr |
| Aug 3, 12:56 PM EDT | Special Weather Statement | BOX | Worcester | 34 min |
| Aug 3, 1:02 PM EDT | Special Weather Statement | BOX | Worcester | 28 min |
| Aug 3, 1:07 PM EDT | Severe Thunderstorm Warning | BOX | Worcester | 23 min |
| Aug 3, 1:11 PM EDT | Special Weather Statement | BOX | Norfolk | 34 min |
| Aug 3, 1:43 PM EDT | Areal Flood Advisory | BOX | Suffolk | 62 min |
| Aug 3, 1:47 PM EDT | Special Weather Statement | BOX | Norfolk, Suffolk | 43 min |
| Aug 3, 1:53 PM EDT | Special Marine Warning | BOX | 42 min | |
| Aug 3, 2:41 PM EDT | Flash Flood Watch | BOX | Bristol, Essex, Franklin, Hampden, Hampshire, Middlesex and 3 more | 25 hr |
| Aug 3, 2:58 PM EDT | Special Weather Statement | BOX | Franklin | 47 min |
| Aug 3, 3:05 PM EDT | Special Marine Warning | BOX | 25 min | |
| Aug 3, 3:35 PM EDT | Small Craft Advisory | BOX | 32 hr | |
| Aug 3, 3:59 PM EDT | Special Weather Statement | BOX | Franklin | 46 min |
| Aug 3, 5:08 PM EDT | Flash Flood Warning | BOX | Franklin, Hampden, Hampshire | 112 min |
| Aug 3, 5:14 PM EDT | Special Weather Statement | BOX | Franklin | 31 min |
| Aug 3, 5:16 PM EDT | Special Weather Statement | BOX | Franklin | 29 min |
| Aug 3, 5:19 PM EDT | Severe Thunderstorm Warning | BOX | Franklin, Worcester | 27 min |
| Aug 3, 5:34 PM EDT | Severe Thunderstorm Warning | BOX | Franklin, Worcester | 13 min |
| Aug 3, 5:50 PM EDT | Special Weather Statement | BOX | Hampden, Hampshire | 55 min |
| Aug 3, 5:59 PM EDT | Flash Flood Warning | BOX | Franklin, Hampshire, Worcester | 71 min |
| Aug 3, 6:03 PM EDT | Severe Thunderstorm Warning | BOX | Franklin, Hampshire, Worcester | 27 min |
| Aug 3, 6:04 PM EDT | Severe Thunderstorm Warning | BOX | Franklin, Hampshire, Worcester | 41 min |
| Aug 3, 6:27 PM EDT | Severe Thunderstorm Warning | BOX | Middlesex, Worcester | 48 min |
| Aug 3, 7:08 PM EDT | Areal Flood Advisory | BOX | Worcester | 21 min |
Nearby
Tornado Warnings in Massachusetts, 2018Every tornado warning in 2018Tornadoes in 2018
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.