Alert archive / Massachusetts / Tornado Warnings in 2019

Tornado Warning 3, NWS Boston/Norton, MA

July 22, 2019Barnstable County, Massachusetts

NWS Boston/Norton, MA issued this tornado warning at Jul 22, 2019, 9:55 PM EDT for Barnstable County, Massachusetts. It was in force for 24 min. 3 reports 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
Jul 22, 2019, 9:55 PM EDT (01:55 UTC)
Expired
Jul 22, 2019, 10:19 PM EDT
In force
24 min
Issued by
NWS Boston/Norton, MA
Area
Storm-based polygon
Tornado
Radar indicated
Hail
0.75 in

County Barnstable County, MA

The radar

The Boston radar (KBOX), 70 km from the middle of the area, began a volume at 01:54 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
Jul 22, 10:13 PM EDTTSTM WND DMGBarnstable, MATREE DOWN ON ASA MEIGS ROAD IN MARSTONS MILLS. OAK STREET WITH TREE DOWN BLOCKING ONE LANE OF THE ROAD IN WEST BARNSTABLE.
Jul 22, 10:13 PM EDTTSTM WND DMGMashpee, MATREE DOWN ON GREAT NECK ROAD SOUTH
Jul 22, 10:24 PM EDTMARINE TSTM WIND 43Chapin, MA

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

The nearest sounding before it

Chatham, MA (KCHH), launched 00:00Z, 1.9 hours before the alert went out and 38 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 00:00Z on 2019-07-23Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 32 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 00:00Z on 2019-07-23The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 126 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
32 J/kg
Mixed-layer CIN
-160 J/kg
Mixed-layer LCL
943 m above ground
0-6 km bulk shear
47 kt
0-1 km storm-relative helicity
126 m²/s²
0-3 km storm-relative helicity
199 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

As transmitted.

381 
WFUS51 KBOX 230155
TORBOX
MAC001-230245-
/O.NEW.KBOX.TO.W.0003.190723T0155Z-190723T0245Z/

BULLETIN - EAS ACTIVATION REQUESTED
Tornado Warning
National Weather Service Boston/Norton MA
955 PM EDT Mon Jul 22 2019

The National Weather Service in Boston/Norton has issued a

* Tornado Warning for...
  Southwestern Barnstable County in southeastern Massachusetts...

* Until 1045 PM EDT.
    
* At 954 PM EDT, a severe thunderstorm capable of producing a tornado
  was located near Mashpee, or near Falmouth, moving northeast at 30
  mph.

  HAZARD...Tornado.

  SOURCE...Radar indicated rotation.

  IMPACT...Flying debris will be dangerous to those caught without 
           shelter. Mobile homes will be damaged or destroyed. 
           Damage to roofs, windows, and vehicles will occur.  Tree 
           damage is likely.

* This dangerous storm will be near...
  Mashpee around 1010 PM EDT.
  Barnstable and Yarmouth around 1025 PM EDT.
  Dennis around 1030 PM EDT.

Other locations impacted by this tornadic thunderstorm include
Hyannis.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

TAKE COVER NOW! Move to a basement or an interior room on the lowest
floor of a sturdy building. Avoid windows. If you are outdoors, in a
mobile home, or in a vehicle, move to the closest substantial shelter
and protect yourself from flying debris.

Torrential rainfall is occurring with this storm, and may lead to
flash flooding. Do not drive your vehicle through flooded roadways.

&&

LAT...LON 4163 7018 4160 7025 4162 7029 4159 7042
      4154 7047 4154 7057 4149 7057 4148 7055
      4146 7054 4156 7067 4158 7065 4165 7067
      4179 7049 4177 7046 4173 7028 4175 7022
      4165 7011
TIME...MOT...LOC 0154Z 227DEG 24KT 4156 7050 

TORNADO...RADAR INDICATED
HAIL...<.75IN

$$

Frank
3 follow-up statements
552 
WWUS51 KBOX 230205
SVSBOX

Severe Weather Statement
National Weather Service Boston/Norton MA
1005 PM EDT Mon Jul 22 2019

MAC001-230245-
/O.CON.KBOX.TO.W.0003.000000T0000Z-190723T0245Z/
Barnstable MA-
1005 PM EDT Mon Jul 22 2019

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 1045 PM EDT FOR
SOUTHWESTERN BARNSTABLE COUNTY...
    
At 1005 PM EDT, a severe thunderstorm capable of producing a tornado
was located near Barnstable, moving northeast at 30 mph.

HAZARD...Tornado.

SOURCE...Radar indicated rotation.

IMPACT...Flying debris will be dangerous to those caught without 
         shelter. Mobile homes will be damaged or destroyed. Damage 
         to roofs, windows, and vehicles will occur.  Tree damage is 
         likely.

This dangerous storm will be near...
  Barnstable and Yarmouth around 1015 PM EDT.
  Dennis around 1025 PM EDT.

Other locations impacted by this tornadic thunderstorm include
Hyannis.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

TAKE COVER NOW! Move to a basement or an interior room on the lowest
floor of a sturdy building. Avoid windows. If you are outdoors, in a
mobile home, or in a vehicle, move to the closest substantial shelter
and protect yourself from flying debris.

Torrential rainfall is occurring with this storm, and may lead to
flash flooding. Do not drive your vehicle through flooded roadways.

&&

LAT...LON 4165 7011 4163 7018 4160 7025 4162 7029
      4159 7042 4154 7047 4154 7055 4160 7053
      4164 7054 4174 7051 4177 7044 4173 7029
      4174 7021
TIME...MOT...LOC 0205Z 235DEG 26KT 4165 7041 

TORNADO...RADAR INDICATED
HAIL...<.75IN

$$

Frank
772 
WWUS51 KBOX 230213
SVSBOX

Severe Weather Statement
National Weather Service Boston/Norton MA
1013 PM EDT Mon Jul 22 2019

MAC001-230245-
/O.CON.KBOX.TO.W.0003.000000T0000Z-190723T0245Z/
Barnstable MA-
1013 PM EDT Mon Jul 22 2019

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 1045 PM EDT FOR SOUTH
CENTRAL BARNSTABLE COUNTY...
    
At 1012 PM EDT, a severe thunderstorm capable of producing a tornado
was located over Yarmouth, or near Barnstable, moving northeast at 35
mph.

HAZARD...Tornado.

SOURCE...Radar indicated rotation.

IMPACT...Flying debris will be dangerous to those caught without 
         shelter. Mobile homes will be damaged or destroyed. Damage 
         to roofs, windows, and vehicles will occur.  Tree damage is 
         likely.

This tornadic thunderstorm will remain over mainly rural areas of
SOUTH CENTRAL BARNSTABLE COUNTY, including the following locations...
Hyannis.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

TAKE COVER NOW! Move to a basement or an interior room on the lowest
floor of a sturdy building. Avoid windows. If you are outdoors, in a
mobile home, or in a vehicle, move to the closest substantial shelter
and protect yourself from flying debris.

Torrential rainfall is occurring with this storm, and may lead to
flash flooding. Do not drive your vehicle through flooded roadways.

&&

LAT...LON 4165 7011 4164 7016 4163 7018 4160 7025
      4162 7029 4161 7033 4161 7034 4167 7032
      4173 7029 4174 7021
TIME...MOT...LOC 0212Z 243DEG 30KT 4167 7023 

TORNADO...RADAR INDICATED
HAIL...<.75IN

$$

Frank
383 
WWUS51 KBOX 230219
SVSBOX

Severe Weather Statement
National Weather Service Boston/Norton MA
1019 PM EDT Mon Jul 22 2019

MAC001-230228-
/O.CAN.KBOX.TO.W.0003.000000T0000Z-190723T0245Z/
Barnstable MA-
1019 PM EDT Mon Jul 22 2019

...THE TORNADO WARNING FOR SOUTH CENTRAL BARNSTABLE COUNTY IS
CANCELLED...
        
The storm which prompted the warning has moved out of the area.
Therefore, the warning has been cancelled.

LAT...LON 4165 7011 4164 7016 4163 7018 4160 7025
      4162 7029 4161 7033 4161 7034 4167 7032
      4173 7029 4174 7021
TIME...MOT...LOC 0217Z 227DEG 24KT 4170 7019 

$$

Frank

The office that day

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

IssuedProductOfficeCountiesLasted
Jul 22, 8:09 PM EDTSpecial Marine WarningBOX96 min
Jul 22, 8:31 PM EDTAreal Flood WarningBOXBristol, Plymouth2 hr
Jul 22, 8:40 PM EDTSevere Thunderstorm WarningBOXBristol65 min
Jul 22, 9:03 PM EDTAreal Flood WarningBOXBristol, Plymouth91 min
Jul 22, 9:12 PM EDTSpecial Marine WarningBOX63 min
Jul 22, 9:33 PM EDTSevere Thunderstorm WarningBOXBarnstable, Bristol, Dukes, Plymouth35 min
Jul 22, 9:36 PM EDTSpecial Marine WarningBOX54 min
Jul 22, 10:17 PM EDTSevere Thunderstorm WarningBOXBarnstable26 min
Jul 22, 10:21 PM EDTTornado WarningBOXBarnstable12 min
Jul 22, 10:23 PM EDTSpecial Marine WarningBOX52 min
Jul 23, 3:27 AM EDTFlash Flood WatchBOXBarnstable, Bristol, Dukes, Nantucket, Norfolk, Plymouth10 hr
Jul 23, 5:06 AM EDTSpecial Marine WarningBOX24 min
Jul 23, 5:59 AM EDTSpecial Marine WarningBOX46 min
Jul 23, 6:29 AM EDTSpecial Marine WarningBOX30 min
Jul 23, 9:45 AM EDTSpecial Marine WarningBOX60 min
Jul 23, 10:00 AM EDTSpecial Marine WarningBOX45 min
Jul 23, 10:39 AM EDTSpecial Marine WarningBOX51 min
Jul 23, 10:45 AM EDTSevere Thunderstorm WarningBOXBarnstable, Dukes45 min
Jul 23, 11:13 AM EDTTornado WarningBOXBarnstable, Dukes32 min
Jul 23, 11:26 AM EDTSpecial Marine WarningBOX34 min
Jul 23, 11:39 AM EDTTornado WarningBOXBarnstable36 min
Jul 23, 11:44 AM EDTSpecial Marine WarningBOX31 min
Jul 23, 12:12 PM EDTTornado Warning Tornado observedBOXBarnstable21 min
Jul 23, 12:16 PM EDTSpecial Marine WarningBOX29 min
Jul 23, 12:43 PM EDTSpecial Marine WarningBOX32 min

Nearby

Tornado Warnings in Massachusetts, 2019Every tornado warning in 2019Tornadoes 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; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.