Alert archive / Massachusetts / Heat Advisories in 2019
Heat Advisory 5, NWS Boston/Norton, MA
NWS Boston/Norton, MA issued this heat advisory at Aug 18, 2019, 3:27 PM EDT for 5 counties in Massachusetts; Capitol Planning Region, Connecticut. It took effect at Aug 19, 2019, 11:00 AM EDT. It was in force for 7 hr.
The area
The counties it named.
The facts
- Issued
- Aug 18, 2019, 3:27 PM EDT (19:27 UTC)
- In effect from
- Aug 19, 2019, 11:00 AM EDT
- Expired
- Aug 19, 2019, 5:31 PM EDT
- In force
- 7 hr
- Issued by
- NWS Boston/Norton, MA
Counties Capitol Planning Region, CT, Bristol County, MA, Hampden County, MA, Middlesex County, MA, Norfolk County, MA, Plymouth County, MA
The radar
The Boston radar (KBOX), 40 km from the middle of the area, began a volume at 19:29 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, 7.5 hours before the alert went out and 142 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
- 112 J/kg
- Mixed-layer CIN
- -49 J/kg
- Mixed-layer LCL
- 621 m above ground
- 0-6 km bulk shear
- 32 kt
- 0-1 km storm-relative helicity
- 26 m²/s²
- 0-3 km storm-relative helicity
- 64 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.1
What forecasters said that day
The local office's own words before this heat advisory 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 heat advisory went out at Aug 18, 10:36 AM EDT, 4 hours 51 minutes earlier.
Area forecast discussion, Aug 18, 10:36 AM EDT, 4 hours 51 minutes before
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</html>Hazardous weather outlook, Aug 18, 4:16 AM EDT, 11 hours 11 minutes before
Hazardous Weather Outlook National Weather Service Boston/Norton MA 416 AM EDT Sun Aug 18 2019 CTZ002>004-MAZ002>019-026-RIZ001>003-190830- Hartford CT-Tolland CT-Windham CT-Western Franklin MA- Eastern Franklin MA-Northern Worcester MA-Central Middlesex MA- Western Essex MA-Eastern Essex MA-Western Hampshire MA- Western Hampden MA-Eastern Hampshire MA-Eastern Hampden MA- Southern Worcester MA-Western Norfolk MA-Southeast Middlesex MA- Suffolk MA-Eastern Norfolk MA-Northern Bristol MA- Western Plymouth MA-Eastern Plymouth MA-Northern Middlesex MA- Northwest Providence RI-Southeast Providence RI-Western Kent RI- 416 AM EDT Sun Aug 18 2019 This Hazardous Weather Outlook is for northern Connecticut, all of Massachusetts east of the Berkshires except for southeastern Massachusetts, and northern Rhode Island. .DAY ONE...Today and tonight. A few strong thunderstorms are possible this afternoon and evening, mainly to the northwest of the Boston to Providence corridor. .DAYS TWO THROUGH SEVEN...Monday through Saturday. A few strong thunderstorms are also possible Tuesday and Wednesday. Heat advisories may be needed early next week, especially for portions of the Connecticut and Merrimack valleys. .SPOTTER INFORMATION STATEMENT... Spotter activation is not expected at this time. MAZ020>024-RIZ004>008-190830- Southern Bristol MA-Southern Plymouth MA-Barnstable MA-Dukes MA- Nantucket MA-Eastern Kent RI-Bristol RI-Washington RI-Newport RI- Block Island RI- 416 AM EDT Sun Aug 18 2019 ...DENSE FOG ADVISORY IN EFFECT UNTIL 9 AM EDT THIS MORNING... This Hazardous Weather Outlook is for southeastern Massachusetts and southern 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. Dense Fog Advisory. .DAYS TWO THROUGH SEVEN...Monday through Saturday. A few strong thunderstorms are also possible Tuesday and Wednesday. .SPOTTER INFORMATION STATEMENT... Spotter activation is not expected at this time. ANZ230>237-250-251-254>256-190830- 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- 416 AM EDT Sun Aug 18 2019 This Hazardous Weather Outlook is for Massachusetts and Rhode Island coastal waters. .DAY ONE...Today and tonight. No hazardous weather is expected at this time. .DAYS TWO THROUGH SEVEN...Monday through Saturday. A few strong thunderstorms are possible Tuesday and Wednesday. .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
Local storm report, Aug 18, 3:14 PM EDT, 13 minutes before
PRELIMINARY LOCAL STORM REPORT...SUMMARY
NATIONAL WEATHER SERVICE BOSTON/NORTON MA
314 PM EDT SUN AUG 18 2019
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0330 PM FLASH FLOOD WESTERLY 41.37N 71.81W
08/17/2019 WASHINGTON RI EMERGENCY MNGR
FLOODING ON SUNSET DRIVE, ATLANTIC AVE, AND OCEAN VIEW
AVE
&&
EVENT NUMBER BOX1902860
AEDThe office that day
Everything else NWS Boston/Norton, MA issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 17, 8:08 PM EDT | Severe Thunderstorm Warning | BOX | Franklin | 42 min |
| Aug 17, 8:13 PM EDT | Severe Thunderstorm Warning | BOX | Franklin, Middlesex, Worcester | 62 min |
| Aug 17, 8:28 PM EDT | Severe Thunderstorm Warning | BOX | Franklin, Hampden, Hampshire, Worcester | 47 min |
| Aug 17, 9:12 PM EDT | Special Weather Statement | BOX | Worcester | 48 min |
| Aug 17, 9:55 PM EDT | Special Weather Statement | BOX | Middlesex | 50 min |
| Aug 18, 3:03 AM EDT | Dense Fog Advisory | BOX | Barnstable, Bristol, Dukes, Nantucket, Plymouth | 6 hr |
| Aug 18, 5:39 PM EDT | Severe Thunderstorm Warning | BOX | Worcester | 51 min |
| Aug 18, 6:24 PM EDT | Severe Thunderstorm Warning | BOX | Norfolk, Worcester | 40 min |
| Aug 18, 7:24 PM EDT | Special Weather Statement | BOX | Hampden | 36 min |
| Aug 18, 6:33 PM EDT | Special Weather Statement | BOX | 27 min | |
| Aug 18, 6:48 PM EDT | Special Weather Statement | BOX | 27 min |
Nearby
Heat Advisories in Massachusetts, 2019Heat Advisories in Connecticut, 2019Every heat advisory 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.