Alert archive / Connecticut / Severe Thunderstorm Warnings in 2016

Severe Thunderstorm Warning 5, NWS Boston/Norton, MA

February 25, 2016Capitol Planning Region, Northeastern Connecticut Planning Region, Connecticut; Hampden County, Massachusetts

NWS Boston/Norton, MA issued this severe thunderstorm warning at Feb 25, 2016, 1:54 AM EST for Capitol Planning Region, Northeastern Connecticut Planning Region, Connecticut; Hampden County, Massachusetts. It was in force for 51 min. 1 report came from inside the area while it was in force.

The area

The outline as issued, with what was reported inside it.

The facts

Issued
Feb 25, 2016, 1:54 AM EST (06:54 UTC)
Expired
Feb 25, 2016, 2:45 AM EST
In force
51 min
Issued by
NWS Boston/Norton, MA
Area
Storm-based polygon

Counties Capitol Planning Region, CT, Northeastern Connecticut Planning Region, CT, Hampden County, MA

The radar

The Boston radar (KBOX), 97 km from the middle of the area, began a volume at 06:56 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.

What was reported inside it

TimeReportWhereRemark
Feb 25, 2:15 AM ESTTSTM WND DMGWoodstock, CTMULTIPLE TREES DOWN ON ROUTE 171. HALF OF TOWN WITHOUT POWER.

Local storm reports filed while the alert was in force, from inside its polygon or its counties.

The watch it was issued in

The SPC watch in force over the same counties when this warning went out.

IssuedProductOfficeLasted
Feb 24, 11:51 PM ESTSevere Thunderstorm WatchSPC4 hr

The nearest sounding before it

Brookhaven, NY (KOKX), launched 00:00Z, 6.9 hours before the alert went out and 105 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, Brookhaven, NY at 00:00Z on 2016-02-25Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 38 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, Brookhaven, NY at 00:00Z on 2016-02-25The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 529 square meters per square second.1939587897Sfc1 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
38 J/kg
Mixed-layer CIN
-81 J/kg
Mixed-layer LCL
479 m above ground
0-6 km bulk shear
42 kt
0-1 km storm-relative helicity
529 m²/s²
0-3 km storm-relative helicity
504 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.9

Open this sounding in Storm Lab

The text

As transmitted.

113 
WUUS51 KBOX 250654
SVRBOX
CTC003-013-015-MAC013-250745-
/O.NEW.KBOX.SV.W.0005.160225T0654Z-160225T0745Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE TAUNTON MA
154 AM EST THU FEB 25 2016

THE NATIONAL WEATHER SERVICE IN TAUNTON HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  WINDHAM COUNTY IN NORTHERN CONNECTICUT...
  TOLLAND COUNTY IN NORTHERN CONNECTICUT...
  EASTERN HARTFORD COUNTY IN NORTHERN CONNECTICUT...
  SOUTHEASTERN HAMPDEN COUNTY IN WESTERN MASSACHUSETTS...

* UNTIL 245 AM EST

* AT 153 AM EST...DOPPLER RADAR INDICATED A LINE OF SEVERE
  THUNDERSTORMS CAPABLE OF PRODUCING DESTRUCTIVE WINDS IN EXCESS OF
  70 MPH. THESE STORMS WERE LOCATED ALONG A LINE EXTENDING FROM
  MONSON TO NEAR TOLLAND TO NEAR MARLBOROUGH...AND WAS MOVING
  NORTHEAST AT 85 MPH.

* LOCATIONS IMPACTED INCLUDE...
  VERNON...MANSFIELD...WINDHAM...PLAINFIELD...WILLIMANTIC...KILLINGLY...
  ELLINGTON...TOLLAND...COVENTRY...STAFFORD...SOMERS...HEBRON...PUTNAM...
  THOMPSON...BROOKLYN...WOODSTOCK...MARLBOROUGH...WILLINGTON...COLUMBIA
  AND CANTERBURY.

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.

THIS IS AN EXTREMELY DANGEROUS SITUATION. MOBILE HOMES AND HIGH
PROFILE VEHICLES ARE ESPECIALLY SUSCEPTIBLE TO WINDS OF THIS
MAGNITUDE AND MAY BE OVERTURNED. FOR YOUR PROTECTION MOVE
IMMEDIATELY TO A SAFE SHELTER OR TO AN INTERIOR ROOM ON THE LOWEST
FLOOR OF YOUR HOME OR BUSINESS.
THESE STORMS HAVE THE POTENTIAL TO CAUSE SERIOUS INJURY AND
SIGNIFICANT PROPERTY DAMAGE.

MINOR FLOODING CAN BE EXPECTED FROM TORRENTIAL RAINFALL. DO NOT DRIVE
THROUGH FLOODED ROADS.

&&

LAT...LON 4159 7247 4179 7244 4203 7244 4202 7181
      4164 7180 4163 7196 4166 7213 4166 7216
      4171 7224 4169 7227 4167 7227 4164 7233
      4161 7233 4159 7239 4160 7241 4159 7242
TIME...MOT...LOC 0653Z 208DEG 75KT 4208 7230 4184 7237 4163 7250 

$$

MD
2 follow-up statements
573 
WWUS51 KBOX 250724
SVSBOX

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE TAUNTON MA
224 AM EST THU FEB 25 2016

CTC003-MAC013-250733-
/O.CAN.KBOX.SV.W.0005.000000T0000Z-160225T0745Z/
HARTFORD CT-HAMPDEN MA-
224 AM EST THU FEB 25 2016

...THE SEVERE THUNDERSTORM WARNING FOR EASTERN HARTFORD AND HAMPDEN
COUNTIES IS CANCELLED...

THE STORMS WHICH PROMPTED THE WARNING HAVE MOVED OUT OF THE WARNED
AREA. THEREFORE THE WARNING HAS BEEN CANCELLED.

LAT...LON 4177 7210 4202 7210 4202 7181 4164 7180
      4163 7196 4166 7213 4166 7216 4170 7213
TIME...MOT...LOC 0723Z 208DEG 75KT 4260 7192 4236 7200 4215 7213 

$$

CTC013-015-250745-
/O.CON.KBOX.SV.W.0005.000000T0000Z-160225T0745Z/
WINDHAM CT-TOLLAND CT-
224 AM EST THU FEB 25 2016

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 245 AM EST
FOR WINDHAM AND NORTHEASTERN TOLLAND COUNTIES...

AT 223 AM EST...DOPPLER RADAR INDICATED A LINE OF SEVERE THUNDERSTORMS
CAPABLE OF PRODUCING DESTRUCTIVE WINDS IN EXCESS OF 70 MPH. THESE
STORMS WERE LOCATED ALONG A LINE EXTENDING FROM NEAR ASHBURNHAM TO
NEAR RUTLAND TO NEAR BROOKFIELD...MOVING NORTHEAST AT 85 MPH.

LOCATIONS IMPACTED INCLUDE...
WINDHAM...PLAINFIELD...KILLINGLY...PUTNAM...THOMPSON...BROOKLYN...
WOODSTOCK...CANTERBURY...POMFRET...STERLING...CHAPLIN...HAMPTON...EASTFORD
AND SCOTLAND.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

SEVERE THUNDERSTORMS PRODUCE DAMAGING WINDS...DESTRUCTIVE HAIL...DEADLY
LIGHTNING AND VERY HEAVY RAIN. FOR YOUR PROTECTION MOVE TO AN
INTERIOR ROOM ON THE LOWEST FLOOR OF YOUR HOME OR BUSINESS. HEAVY
RAINS FLOOD ROADS QUICKLY SO DO NOT DRIVE INTO AREAS WHERE WATER
COVERS THE ROAD.

&&

LAT...LON 4177 7210 4202 7210 4202 7181 4164 7180
      4163 7196 4166 7213 4166 7216 4170 7213
TIME...MOT...LOC 0723Z 208DEG 75KT 4260 7192 4236 7200 4215 7213 

$$

MD
668 
WWUS51 KBOX 250742
SVSBOX

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE TAUNTON MA
242 AM EST THU FEB 25 2016

CTC013-015-250752-
/O.EXP.KBOX.SV.W.0005.000000T0000Z-160225T0745Z/
WINDHAM CT-TOLLAND CT-
242 AM EST THU FEB 25 2016

...THE SEVERE THUNDERSTORM WARNING FOR WINDHAM AND NORTHEASTERN
TOLLAND COUNTIES WILL EXPIRE AT 245 AM EST...
    
THE STORMS WHICH PROMPTED THE WARNING HAVE MOVED OUT OF THE AREA.
THEREFORE THE WARNING WILL BE ALLOWED TO EXPIRE.

LAT...LON 4177 7210 4202 7210 4202 7181 4164 7180
      4163 7196 4166 7213 4166 7216 4170 7213
TIME...MOT...LOC 0739Z 208DEG 75KT 4260 7192 4236 7200 4215 7213 

$$

MD

The office that day

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

IssuedProductOfficeCountiesLasted
Feb 24, 11:24 PM ESTSpecial Weather StatementBOX36 min
Feb 24, 11:55 PM ESTSpecial Weather StatementBOX50 min
Feb 25, 12:19 AM ESTSevere Thunderstorm WarningBOXCapitol Planning Region41 min
Feb 25, 12:25 AM ESTSevere Thunderstorm WarningBOXCapitol Planning Region35 min
Feb 25, 12:43 AM ESTAreal Flood AdvisoryBOXCapitol Planning Region3 hr
Feb 25, 12:55 AM ESTSevere Thunderstorm WarningBOXCapitol Planning Region50 min
Feb 25, 12:58 AM ESTSevere Thunderstorm WarningBOXCapitol Planning Region62 min
Feb 25, 2:21 PM ESTRiver Flood WarningBOXCapitol Planning Region71 hr
Feb 25, 2:21 PM ESTRiver Flood WarningBOXCapitol Planning Region, Lower Connecticut River Valley Planning Region4 days
Feb 25, 2:21 PM ESTRiver Flood WarningBOXLower Connecticut River Valley Planning Region4 days
Feb 24, 10:13 PM ESTSpecial Weather StatementBOXHampden32 min
Feb 24, 10:32 PM ESTSpecial Weather StatementBOXFranklin, Hampshire28 min
Feb 25, 12:38 AM ESTSpecial Weather StatementBOXHampden52 min
Feb 25, 1:11 AM ESTAreal Flood AdvisoryBOXFranklin, Hampden, Hampshire, Worcester3 hr
Feb 25, 1:25 AM ESTAreal Flood WarningBOXFranklin, Hampden, Hampshire4 hr
Feb 25, 1:57 AM ESTSevere Thunderstorm WarningBOXHampden, Middlesex, Worcester48 min
Feb 25, 2:40 AM ESTSevere Thunderstorm WarningBOXBristol, Essex, Middlesex, Norfolk, Worcester50 min
Feb 25, 2:56 AM ESTSpecial Marine WarningBOX64 min
Feb 25, 3:01 AM ESTSevere Thunderstorm WarningBOXBristol, Essex, Middlesex, Norfolk, Plymouth, Suffolk59 min
Feb 25, 3:11 AM ESTSevere Thunderstorm WarningBOXBarnstable, Bristol, Norfolk, Plymouth64 min
Feb 25, 3:52 AM ESTSevere Thunderstorm WarningBOXBristol, Essex, Middlesex, Norfolk, Plymouth, Suffolk38 min
Feb 25, 4:11 AM ESTSevere Thunderstorm WarningBOXBarnstable, Bristol, Plymouth49 min
Feb 25, 5:29 AM ESTAreal Flood WarningBOXFranklin, Hampden, Hampshire2 hr
Feb 25, 7:26 AM ESTAreal Flood WarningBOXFranklin, Hampshire2 hr
Feb 25, 8:02 AM ESTRiver Flood WarningBOXHampden, Hampshire17 hr
Feb 25, 2:21 PM ESTRiver Flood WarningBOXFranklin, Hampshire44 hr
Feb 25, 2:21 PM ESTRiver Flood WarningBOXHampden, Hampshire62 hr
Feb 25, 6:53 PM ESTSmall Craft AdvisoryBOX33 hr

Nearby

Severe Thunderstorm Warnings in Connecticut, 2016Severe Thunderstorm Warnings in Massachusetts, 2016Every severe thunderstorm warning 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; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.