Alert archive / Rhode Island / Severe Thunderstorm Warnings in 2014

Severe Thunderstorm Warning 4, NWS Boston/Norton, MA

May 25, 2014Kent County, Washington County, Rhode Island; Northeastern Connecticut Planning Region, Connecticut

NWS Boston/Norton, MA issued this severe thunderstorm warning at May 25, 2014, 2:37 PM EDT for Kent County, Washington County, Rhode Island; Northeastern Connecticut Planning Region, Connecticut. It was in force for 38 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: May 25, 2014, 2:37 PM EDT (18:37 UTC)
Expired: May 25, 2014, 3:15 PM EDT
In force: 38 min
Issued by: NWS Boston/Norton, MA
Area: Storm-based polygon

Counties Northeastern Connecticut Planning Region, CT, Kent County, RI, Washington County, RI

The radar

The Boston radar (KBOX), 68 km from the middle of the area, began a volume at 18:36 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

Brookhaven, NY (KOKX), launched 12:00Z, 6.6 hours before the alert went out and 121 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-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

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: 10 J/kg
Mixed-layer CIN: -100 J/kg
Mixed-layer LCL: 1127 m above ground
0-6 km bulk shear: 27 kt
0-1 km storm-relative helicity: 59 m²/s²
0-3 km storm-relative helicity: 77 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

As transmitted, in the capitals the NWS used until 2016.

004 
WUUS51 KBOX 251837
SVRBOX
CTC015-RIC003-009-251915-
/O.NEW.KBOX.SV.W.0004.140525T1837Z-140525T1915Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE TAUNTON MA
237 PM EDT SUN MAY 25 2014

THE NATIONAL WEATHER SERVICE IN TAUNTON HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  SOUTHEASTERN WINDHAM COUNTY IN NORTHERN CONNECTICUT...
  NORTHWESTERN WASHINGTON COUNTY IN RHODE ISLAND...
  SOUTHWESTERN KENT COUNTY IN RHODE ISLAND...

* UNTIL 315 PM EDT

* AT 236 PM EDT...DOPPLER RADAR INDICATED A SEVERE THUNDERSTORM
  CAPABLE OF PRODUCING QUARTER SIZE HAIL. THIS STORM WAS LOCATED OVER
  PLAINFIELD...AND WAS MOVING SOUTH AT 30 MPH.

* SOME LOCATIONS IMPACTED INCLUDE...
  COVENTRY...PLAINFIELD...KILLINGLY...BROOKLYN...HOPKINTON...
  EXETER...WEST GREENWICH...CANTERBURY AND STERLING.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

SEVERE THUNDERSTORMS PRODUCE DAMAGING WINDS AND LARGE HAIL. GO
INDOORS AND STAY AWAY FROM WINDOWS.  DRIVERS SHOULD PREPARE FOR LOW
VISIBILITY AND AVOID FLOODED ROADS.

&&

LAT...LON 4164 7179 4164 7194 4176 7197 4179 7181
      4148 7171 4147 7180
TIME...MOT...LOC 1836Z 348DEG 26KT 4172 7189 
$$
FIELD

1 follow-up statement

421 
WWUS51 KBOX 251858
SVSBOX

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE TAUNTON MA
258 PM EDT SUN MAY 25 2014

RIC003-009-251906-
/O.CAN.KBOX.SV.W.0004.000000T0000Z-140525T1915Z/
WASHINGTON RI-KENT RI-
258 PM EDT SUN MAY 25 2014

...THE SEVERE THUNDERSTORM WARNING FOR NORTHWESTERN WASHINGTON AND
SOUTHWESTERN KENT COUNTIES IS CANCELED...
    
THE SEVERE THUNDERSTORM WHICH PROMPTED THE WARNING HAS TURNED TO THE 
SOUTH. THEREFORE THE WARNING HAS BEEN CANCELED FOR KENT AND 
NORTHWEST WASHINGTON COUNTIES.

LAT...LON 4166 7194 4169 7195 4170 7183 4164 7181
      4164 7194
TIME...MOT...LOC 1856Z 350DEG 22KT 4165 7190 

$$

CTC015-251915-
/O.CON.KBOX.SV.W.0004.000000T0000Z-140525T1915Z/
WINDHAM CT-
258 PM EDT SUN MAY 25 2014

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 315 PM EDT
FOR SOUTHEASTERN WINDHAM COUNTY...

AT 256 PM EDT...DOPPLER RADAR INDICATED A SEVERE THUNDERSTORM CAPABLE
OF PRODUCING HALF DOLLAR SIZE HAIL. THIS STORM WAS LOCATED NEAR
PLAINFIELD...MOVING SOUTH AT 25 MPH.

LOCATIONS IMPACTED INCLUDE...
PLAINFIELD AND STERLING. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

SEVERE THUNDERSTORMS PRODUCE DAMAGING WINDS AND DESTRUCTIVE HAIL. GO
INSIDE TO AN INTERIOR ROOM ON THE LOWEST FLOOR OF YOUR HOME OR
BUSINESS. DRIVERS SHOULD EXPECT POOR VISIBILITY AND AVOID FLOODED
ROADS.

&&

LAT...LON 4166 7194 4169 7195 4170 7183 4164 7181
      4164 7194
TIME...MOT...LOC 1856Z 350DEG 22KT 4165 7190 

$$
FIELD

The office that day

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

Issued	Product	Office	Counties	Lasted
May 25, 1:07 PM EDT	Special Weather Statement	BOX	Providence	83 min
May 25, 2:15 PM EDT	Severe Thunderstorm Warning	BOX	Providence	30 min
May 25, 2:41 PM EDT	Special Weather Statement	BOX	Washington	49 min
May 25, 1:42 PM EDT	Severe Thunderstorm Warning	BOX	Northeastern Connecticut Planning Region	33 min
May 25, 2:43 PM EDT	Severe Thunderstorm Warning	BOX	Northeastern Connecticut Planning Region	47 min
May 25, 3:32 PM EDT	Special Weather Statement	BOX		28 min

Nearby

Severe Thunderstorm Warnings in Rhode Island, 2014 Severe Thunderstorm Warnings in Connecticut, 2014 Every severe thunderstorm warning in 2014

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.