Alert archive / Rhode Island / Special Weather Statements in 2016

Special Weather Statement, NWS Boston/Norton, MA

July 7, 2016Kent County, Rhode Island

NWS Boston/Norton, MA issued this special weather statement at Jul 7, 2016, 2:21 PM EDT for Kent County, Rhode Island. It was in force for 39 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
Jul 7, 2016, 2:21 PM EDT (18:21 UTC)
Expired
Jul 7, 2016, 3:00 PM EDT
In force
39 min
Issued by
NWS Boston/Norton, MA

County Kent County, RI

The radar

The Boston radar (KBOX), 34 km from the middle of the area, began a volume at 18:25 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, 6.4 hours before the alert went out and 120 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 2016-07-07Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 21 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Chatham, MA at 12:00Z on 2016-07-07The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 11 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
21 J/kg
Mixed-layer CIN
-89 J/kg
Mixed-layer LCL
1358 m above ground
0-6 km bulk shear
22 kt
0-1 km storm-relative helicity
11 m²/s²
0-3 km storm-relative helicity
-2 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

As transmitted.

555 
WWUS81 KBOX 071821
SPSBOX

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE TAUNTON MA
221 PM EDT THU JUL 7 2016
 
RIZ001>004-071900-
SOUTHEAST PROVIDENCE RI-EASTERN KENT RI-WESTERN KENT RI-
NORTHWEST PROVIDENCE RI-
221 PM EDT THU JUL 7 2016

...STRONG THUNDERSTORM IN WESTERN BRISTOL...NORTHEASTERN KENT AND
SOUTHEASTERN PROVIDENCE COUNTIES...

AT 220 PM EDT...DOPPLER RADAR WAS TRACKING A STRONG THUNDERSTORM NEAR
CRANSTON...MOVING EAST AT 10 MPH.

DIME SIZE HAIL AND WINDS IN EXCESS OF 40 MPH ARE POSSIBLE WITH THIS
STORM.

LOCATIONS IMPACTED INCLUDE...
PROVIDENCE...WARWICK...CRANSTON...EAST PROVIDENCE...COVENTRY...WEST
WARWICK...JOHNSTON...SEEKONK AND SCITUATE.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

DO NOT DRIVE THROUGH FLOODED ROADS OR UNDERPASSES. AVOID LOW LYING
AREAS NEAR SMALL STREAMS.

THIS STORM MAY INTENSIFY AND BECOME CAPABLE OF PRODUCING DAMAGE. STAY
TUNED FOR UPDATED STATEMENTS AND POSSIBLE WARNINGS.

&&

LAT...LON 4168 7139 4169 7145 4167 7145 4171 7166
      4184 7165 4183 7134 4179 7133 4175 7136
      4179 7137 4179 7138 4178 7139 4173 7138
      4172 7135 4167 7137 4167 7138
TIME...MOT...LOC 1820Z 285DEG 7KT 4175 7157 

$$

DUNTEN

The office that day

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

IssuedProductOfficeCountiesLasted
Jul 7, 3:17 PM EDTSevere Thunderstorm WarningBOXMiddlesex, Norfolk, Worcester35 min
Jul 7, 4:40 PM EDTSpecial Weather StatementBOXFranklin50 min
Jul 7, 1:14 PM EDTSpecial Weather StatementBOXProvidence46 min
Jul 7, 1:17 PM EDTSevere Thunderstorm WarningBOXKent, Providence58 min
Jul 7, 1:23 PM EDTFlash Flood WarningBOXProvidence112 min
Jul 7, 2:29 PM EDTSpecial Weather StatementBOXProvidence46 min
Jul 7, 3:13 PM EDTSpecial Weather StatementBOXProvidence47 min
Jul 7, 3:20 PM EDTSpecial Weather StatementBOXProvidence40 min
Jul 7, 3:43 PM EDTAreal Flood WarningBOXProvidence3 hr
Jul 7, 1:28 PM EDTSpecial Weather StatementBOX47 min
Jul 7, 1:46 PM EDTSpecial Weather StatementBOX44 min
Jul 7, 2:17 PM EDTSpecial Weather StatementBOX43 min
Jul 7, 2:19 PM EDTSpecial Weather StatementBOX41 min
Jul 7, 2:44 PM EDTSpecial Weather StatementBOX46 min
Jul 7, 3:32 PM EDTSpecial Weather StatementBOX88 min

Nearby

Special Weather Statements in Rhode Island, 2016Every special weather statement in 2016

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.