Alert archive / Rhode Island / Areal Flood Advisories in 2018

Areal Flood Advisory 13, NWS Boston/Norton, MA

July 15, 2018Bristol County, Kent County, Providence County, Rhode Island

NWS Boston/Norton, MA issued this areal flood advisory at Jul 15, 2018, 4:13 PM EDT for Bristol County, Kent County, Providence County, Rhode Island. It was in force for 62 min.

The area

The counties it named.

The facts

Issued
Jul 15, 2018, 4:13 PM EDT (20:13 UTC)
Expired
Jul 15, 2018, 5:15 PM EDT
In force
62 min
Issued by
NWS Boston/Norton, MA
Area
Storm-based polygon

Counties Bristol County, RI, Kent County, RI, Providence County, RI

The radar

The Boston radar (KBOX), 37 km from the middle of the area, began a volume at 20:16 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, 8.2 hours before the alert went out and 126 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.

Skew-T log-pSkew-T log-p diagram, Chatham, MA at 12:00Z on 2018-07-15Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 0 joules per kilogram.LCL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Chatham, MA at 12:00Z on 2018-07-15The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 44 square meters per square second.193958Sfc1 km3 km6 km9 kmRMLM
The wind turning with height, colored by layer: ground to 1 km, 1 to 3 km, 3 to 6 km, 6 to 10 km.
Mixed-layer CAPE
0 J/kg
Mixed-layer CIN
No buoyant parcel
Mixed-layer LCL
1028 m above ground
0-6 km bulk shear
26 kt
0-1 km storm-relative helicity
44 m²/s²
0-3 km storm-relative helicity
95 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

What forecasters said that day

The local office's own words before this areal flood 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 areal flood advisory went out at Jul 15, 3:38 PM EDT, 35 minutes earlier.

Area forecast discussion, Jul 15, 3:38 PM EDT, 35 minutes before
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Hazardous weather outlook, Jul 15, 3:23 PM EDT, 50 minutes before
Hazardous Weather Outlook
National Weather Service Boston/Norton MA
323 PM EDT Sun Jul 15 2018

CTZ002>004-MAZ002>024-026-RIZ001>008-161930-
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-Southern Bristol MA-
Southern Plymouth MA-Barnstable MA-Dukes MA-Nantucket MA-
Northern Middlesex MA-Northwest Providence RI-
Southeast Providence RI-Western Kent RI-Eastern Kent RI-Bristol RI-
Washington RI-Newport RI-Block Island RI-
323 PM EDT Sun Jul 15 2018

This Hazardous Weather Outlook is for northern Connecticut, all of
Massachusetts east of Berkshire County, and Rhode Island.

.DAY ONE...This Afternoon and Tonight.

Hazardous weather is not expected at this time.

.DAYS TWO THROUGH SEVEN...Monday through Saturday.

Monday and Tuesday...

Some locations may see heat index values reach into the middle 90s
on both Monday and Tuesday. The greatest risk for this will be across
the Connecticut and Merrimack Valleys. If this were to occur...heat
advisories would be needed.

Tuesday and Tuesday night...

Widespread showers and thunderstorms Tuesday afternoon and Tuesday
night will contain heavy rainfall. This may result in a localized
urban flash flood threat. A few strong thunderstorms with localized
strong wind gusts are also possible.

.SPOTTER INFORMATION STATEMENT...

Spotter activation is not expected at this time.

ANZ230>237-250-251-254>256-161930-
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-
323 PM EDT Sun Jul 15 2018

This Hazardous Weather Outlook is for Massachusetts and Rhode
Island coastal waters.

.DAY ONE...This Afternoon and Tonight.

No hazardous weather is expected at this time.

.DAYS TWO THROUGH SEVEN...Monday through Saturday.

No hazardous weather is expected at this time.

.SPOTTER INFORMATION STATEMENT...

Spotter activation is not expected at this time.

Frank

For the latest updates, please visit our webpage at
www.weather.gov/boston

You can follow us on Facebook at
www.facebook.com/NWSBoston

You can follow us on Twitter at
@NWSBoston

In the hours before

Special weather statement, Jul 15, 1:14 PM EDT, 2 hours 59 minutes before
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The office that day

Everything else NWS Boston/Norton, MA issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Jul 15, 6:14 PM EDTSpecial Weather StatementBOXWorcester46 min
Jul 15, 6:26 PM EDTSpecial Weather StatementBOXWorcester49 min
Jul 15, 7:44 PM EDTSpecial Weather StatementBOXWorcester46 min
Jul 15, 5:13 PM EDTSpecial Weather StatementBOXKent47 min
Jul 15, 1:14 PM EDTSpecial Weather StatementBOX46 min

Nearby

Areal Flood Advisories in Rhode Island, 2018Every areal flood advisory 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.