Alert archive / Massachusetts / Severe Thunderstorm Warnings in 2017
Severe Thunderstorm Warning 80, NWS Boston/Norton, MA
NWS Boston/Norton, MA issued this severe thunderstorm warning at Sep 30, 2017, 6:28 AM EDT for Essex County, Suffolk County, Massachusetts. It was in force for 47 min. 1 report 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
- Sep 30, 2017, 6:28 AM EDT (10:28 UTC)
- Expired
- Sep 30, 2017, 7:15 AM EDT
- In force
- 47 min
- Issued by
- NWS Boston/Norton, MA
- Area
- Storm-based polygon
- Hail
- 1.0 in
- Wind
- 50.0 mph
Counties Essex County, MA, Suffolk County, MA
The radar
The Boston radar (KBOX), 59 km from the middle of the area, began a volume at 10:28 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 |
|---|---|---|---|
| Sep 30, 6:35 AM EDT | HAIL 1 | Lynn, MA |
Local storm reports filed while the alert was in force, from inside its polygon or its counties.
The nearest sounding before it
Chatham, MA (KCHH), launched 00:00Z, 10.5 hours before the alert went out and 118 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
- 0 J/kg
- Mixed-layer CIN
- No buoyant parcel
- Mixed-layer LCL
- 999 m above ground
- 0-6 km bulk shear
- 73 kt
- 0-1 km storm-relative helicity
- 104 m²/s²
- 0-3 km storm-relative helicity
- 137 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
260
WUUS51 KBOX 301028
SVRBOX
MAC009-025-301115-
/O.NEW.KBOX.SV.W.0080.170930T1028Z-170930T1115Z/
BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Taunton MA
628 AM EDT SAT SEP 30 2017
The National Weather Service in Taunton has issued a
* Severe Thunderstorm Warning for...
Northeastern Suffolk County in eastern Massachusetts...
South central Essex County in northeastern Massachusetts...
* Until 715 AM EDT
* At 627 AM EDT, a severe thunderstorm was located over Lynn, and is
nearly stationary.
HAZARD...Quarter size hail.
SOURCE...Radar indicated.
IMPACT...Damage to vehicles is possible.
* Locations impacted include...
Lynn, Revere, Peabody, Salem, Saugus, Marblehead, Swampscott and
Nahant.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
For your protection move to an interior room on the lowest floor of a
building.
&&
LAT...LON 4249 7084 4242 7094 4242 7096 4241 7097
4248 7103 4254 7090
TIME...MOT...LOC 1027Z 250DEG 2KT 4247 7095
HAIL...1.00IN
WIND...<50MPH
$$
FrankThe office that day
Everything else NWS Boston/Norton, MA issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Sep 30, 4:06 AM EDT | Small Craft Advisory | BOX | 21 hr | |
| Sep 30, 5:37 AM EDT | Special Weather Statement | BOX | Essex | 38 min |
| Sep 30, 6:04 AM EDT | Areal Flood Warning | BOX | Essex, Suffolk | 116 min |
| Sep 30, 6:07 AM EDT | Flash Flood Warning | BOX | Essex, Suffolk | 113 min |
| Sep 30, 6:24 AM EDT | Special Weather Statement | BOX | Suffolk | 51 min |
| Sep 30, 6:32 AM EDT | Special Marine Warning | BOX | 43 min | |
| Sep 30, 8:00 AM EDT | Areal Flood Advisory | BOX | Middlesex, Suffolk | 2 hr |
| Sep 30, 9:00 AM EDT | Areal Flood Advisory | BOX | Norfolk, Plymouth, Suffolk | 2 hr |
| Sep 30, 9:24 AM EDT | Special Weather Statement | BOX | Suffolk | 66 min |
Nearby
Severe Thunderstorm Warnings in Massachusetts, 2017Every severe thunderstorm warning in 2017
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.