Alert archive / Massachusetts / Severe Thunderstorm Warnings in 2019
Severe Thunderstorm Warning 54, NWS Boston/Norton, MA
NWS Boston/Norton, MA issued this severe thunderstorm warning at Jul 23, 2019, 10:45 AM EDT for Barnstable County, Dukes County, Massachusetts. It was in force for 45 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 23, 2019, 10:45 AM EDT (14:45 UTC)
- Expired
- Jul 23, 2019, 11:30 AM EDT
- In force
- 45 min
- Issued by
- NWS Boston/Norton, MA
- Area
- Storm-based polygon
- Hail
- 0.75 in
- Wind
- 60.0 mph
Counties Barnstable County, MA, Dukes County, MA
The radar
The Boston radar (KBOX), 71 km from the middle of the area, began a volume at 14:49 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
Chatham, MA (KCHH), launched 12:00Z, 2.8 hours before the alert went out and 45 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
- 15 J/kg
- Mixed-layer CIN
- -248 J/kg
- Mixed-layer LCL
- 794 m above ground
- 0-6 km bulk shear
- 52 kt
- 0-1 km storm-relative helicity
- 16 m²/s²
- 0-3 km storm-relative helicity
- 70 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- -0.0
What forecasters said that day
The local office's own words before this severe thunderstorm warning went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.
NWS Boston/Norton, MA wrote its last area forecast discussion before this severe thunderstorm warning went out at Jul 23, 9:31 AM EDT, 1 hour 14 minutes earlier.
Area forecast discussion, Jul 23, 9:31 AM EDT, 1 hour 14 minutes before
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</html>Hazardous weather outlook, Jul 23, 5:02 AM EDT, 5 hours 43 minutes before
Hazardous Weather Outlook National Weather Service Boston/Norton MA 502 AM EDT Tue Jul 23 2019 MAZ002>004-008>011-026-240915- Western Franklin MA-Eastern Franklin MA-Northern Worcester MA- Western Hampshire MA-Western Hampden MA-Eastern Hampshire MA- Eastern Hampden MA-Northern Middlesex MA- 502 AM EDT Tue Jul 23 2019 This Hazardous Weather Outlook is for central Massachusetts, eastern Massachusetts and western Massachusetts. .DAY ONE...Today and tonight. No hazardous weather is expected at this time. .DAYS TWO THROUGH SEVEN...Wednesday through Monday. No hazardous weather is expected at this time. .SPOTTER INFORMATION STATEMENT... Spotter activation is not expected at this time. CTZ002>004-MAZ005>007-012>016-240915- Hartford CT-Tolland CT-Windham CT-Central Middlesex MA- Western Essex MA-Eastern Essex MA-Southern Worcester MA- Western Norfolk MA-Southeast Middlesex MA-Suffolk MA- Eastern Norfolk MA- 502 AM EDT Tue Jul 23 2019 This Hazardous Weather Outlook is for northern Connecticut, central Massachusetts, eastern Massachusetts and northeastern Massachusetts. .DAY ONE...Today and tonight. Through this afternoon there is the risk of locally heavy downpours which may produce urban and poor drainage flooding. .DAYS TWO THROUGH SEVEN...Wednesday through Monday. Hazardous weather is not expected at this time. .SPOTTER INFORMATION STATEMENT... Spotter activation is not expected at this time. MAZ017>024-RIZ001>008-240915- Northern Bristol MA-Western Plymouth MA-Eastern Plymouth MA- Southern Bristol MA-Southern Plymouth MA-Barnstable MA-Dukes MA- Nantucket MA-Northwest Providence RI-Southeast Providence RI- Western Kent RI-Eastern Kent RI-Bristol RI-Washington RI-Newport RI- Block Island RI- 502 AM EDT Tue Jul 23 2019 ...FLASH FLOOD WATCH IN EFFECT UNTIL 2 PM EDT THIS AFTERNOON... This Hazardous Weather Outlook is for southeastern Massachusetts, and Rhode Island. .DAY ONE...Today and tonight. Please listen to NOAA Weather Radio or go to weather.gov on the Internet for more information about the following hazards. Flash Flood Watch. .DAYS TWO THROUGH SEVEN...Wednesday through Monday. Hazardous weather is not expected at this time. .SPOTTER INFORMATION STATEMENT... Weather spotters are encouraged to report significant weather conditions according to Standard Operating Procedures. ANZ230>237-250-251-254>256-240915- Boston Harbor-Cape Cod Bay-Nantucket Sound-Vineyard Sound- Buzzards Bay-Rhode Island Sound-Narragansett Bay-Block Island Sound- Coastal waters east of Ipswich Bay and the Stellwagen Bank National Marine Sanctuary-Massachusetts Bay and Ipswich Bay- Coastal waters from Provincetown MA to Chatham MA to Nantucket MA out 20 nm- Coastal Waters extending out to 25 nm South of Marthas Vineyard and Nantucket- Coastal Waters from Montauk NY to Marthas Vineyard extending out to 20 nm South of Block Island- 502 AM EDT Tue Jul 23 2019 This Hazardous Weather Outlook is for Massachusetts and Rhode Island coastal waters. .DAY ONE...Today and tonight. Showers and scattered thunderstorms continue. There is the threat of gale force winds. In addition, fog and / or local downpours may cause visibility of 1 to 3 nm. .DAYS TWO THROUGH SEVEN...Wednesday through Monday. Hazardous weather is not expected at this time. .SPOTTER INFORMATION STATEMENT... Spotter activation is not expected at this time. For the latest updates...please visit our webpage at www.weather.gov/boston You can follow us on Facebook at www.facebook.com/us.nationalweatherservice.boston.gov You can follow us on Twitter at @NWSBoston
In the hours before
Special weather statement, Jul 23, 9:32 AM EDT, 1 hour 13 minutes before
Special Weather Statement National Weather Service Boston/Norton MA 932 AM EDT Tue Jul 23 2019 MAZ017>021-RIZ001>008-231545- Northern Bristol MA-Western Plymouth MA-Eastern Plymouth MA- Southern Bristol MA-Southern Plymouth MA-Northwest Providence RI- Southeast Providence RI-Western Kent RI-Eastern Kent RI- Bristol RI-Washington RI-Newport RI-Block Island RI- Including the cities of Taunton, Brockton, Plymouth, Fall River, New Bedford, Mattapoisett, Foster, Smithfield, Providence, Coventry, West Greenwich, East Greenwich, Warwick, West Warwick, Bristol, Narragansett, Westerly, Newport, and New Shoreham 932 AM EDT Tue Jul 23 2019 ...MODERATE TO HEAVY RAINFALL WILL HAVE THE POTENTIAL TO CAUSE MINOR FLOODING... Moderate to heavy rain is moving into Rhode Island and southeastern Massachusetts this morning which could drop an additional 1 to 2 inches of rain over a short period of time. Overflowing poor drainage areas may result in minor flooding.
The office that day
Everything else NWS Boston/Norton, MA issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 22, 8:09 PM EDT | Special Marine Warning | BOX | 96 min | |
| Jul 22, 8:31 PM EDT | Areal Flood Warning | BOX | Bristol, Plymouth | 2 hr |
| Jul 22, 8:40 PM EDT | Severe Thunderstorm Warning | BOX | Bristol | 65 min |
| Jul 22, 9:03 PM EDT | Areal Flood Warning | BOX | Bristol, Plymouth | 91 min |
| Jul 22, 9:12 PM EDT | Special Marine Warning | BOX | 63 min | |
| Jul 22, 9:33 PM EDT | Severe Thunderstorm Warning | BOX | Barnstable, Bristol, Dukes, Plymouth | 35 min |
| Jul 22, 9:36 PM EDT | Special Marine Warning | BOX | 54 min | |
| Jul 22, 9:55 PM EDT | Tornado Warning | BOX | Barnstable | 24 min |
| Jul 22, 10:17 PM EDT | Severe Thunderstorm Warning | BOX | Barnstable | 26 min |
| Jul 22, 10:21 PM EDT | Tornado Warning | BOX | Barnstable | 12 min |
| Jul 22, 10:23 PM EDT | Special Marine Warning | BOX | 52 min | |
| Jul 23, 3:27 AM EDT | Flash Flood Watch | BOX | Barnstable, Bristol, Dukes, Nantucket, Norfolk, Plymouth | 10 hr |
| Jul 23, 5:06 AM EDT | Special Marine Warning | BOX | 24 min | |
| Jul 23, 5:59 AM EDT | Special Marine Warning | BOX | 46 min | |
| Jul 23, 6:29 AM EDT | Special Marine Warning | BOX | 30 min | |
| Jul 23, 9:45 AM EDT | Special Marine Warning | BOX | 60 min | |
| Jul 23, 10:00 AM EDT | Special Marine Warning | BOX | 45 min | |
| Jul 23, 10:39 AM EDT | Special Marine Warning | BOX | 51 min | |
| Jul 23, 11:13 AM EDT | Tornado Warning | BOX | Barnstable, Dukes | 32 min |
| Jul 23, 11:26 AM EDT | Special Marine Warning | BOX | 34 min | |
| Jul 23, 11:39 AM EDT | Tornado Warning | BOX | Barnstable | 36 min |
| Jul 23, 11:44 AM EDT | Special Marine Warning | BOX | 31 min | |
| Jul 23, 12:12 PM EDT | Tornado Warning | BOX | Barnstable | 21 min |
| Jul 23, 12:16 PM EDT | Special Marine Warning | BOX | 29 min | |
| Jul 23, 12:43 PM EDT | Special Marine Warning | BOX | 32 min | |
| Jul 22, 8:01 PM EDT | Areal Flood Warning | BOX | Bristol, Kent, Newport, Providence, Washington | 3 hr |
| Jul 22, 8:36 PM EDT | Special Weather Statement | BOX | Bristol, Newport, Washington | 39 min |
| Jul 22, 9:09 PM EDT | Severe Thunderstorm Warning | BOX | Newport, Washington | 20 min |
Nearby
Severe Thunderstorm Warnings in Massachusetts, 2019Every severe thunderstorm warning in 2019
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.