Alert archive / New Hampshire / Special Weather Statements in 2011

Special Weather Statement, NWS Boston/Norton, MA

July 4, 2011Cheshire County, New Hampshire

NWS Boston/Norton, MA issued this special weather statement at Jul 4, 2011, 2:21 PM EDT for Cheshire County, New Hampshire. It was in force for 54 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 4, 2011, 2:21 PM EDT (18:21 UTC)
Expired: Jul 4, 2011, 3:15 PM EDT
In force: 54 min
Issued by: NWS Boston/Norton, MA

County Cheshire County, NH

The radar

The Boston radar (KBOX), 133 km from the middle of the area, began a volume at 18:21 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

Albany, NY (KALY), launched 12:00Z, 6.4 hours before the alert went out and 135 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: 0 J/kg
Mixed-layer CIN: No buoyant parcel
Mixed-layer LCL: 1072 m above ground
0-6 km bulk shear: 17 kt
0-1 km storm-relative helicity: 26 m²/s²
0-3 km storm-relative helicity: 49 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.

594 
WWUS81 KBOX 041821
SPSBOX

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE TAUNTON MA
221 PM EDT MON JUL 4 2011

NHZ011-041915-
CHESHIRE NH-
221 PM EDT MON JUL 4 2011

AT 216 PM EDT NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
STRONG THUNDERSTORM CAPABLE OF PRODUCING WIND GUSTS TO 40 MPH AND
PENNY SIZED HAIL 3 MILES WEST OF SWANZEY...OR ABOUT 6 MILES SOUTH OF
KEENE...MOVING SOUTHEAST AT 5 MPH.

* SOME LOCATIONS AFFECTED INCLUDE...SWANZEY...ROXBURY...
  MARLBOROUGH...TROY...FITZWILLIAM AND DUBLIN.

FOR YOUR SAFETY...GET INSIDE WHEN THESE STORMS APPROACH. THESE STORMS
MAY STRENGTHEN AND COULD PRODUCE DAMAGING WINDS OR LARGE HAIL. STAY
TUNED TO NOAA WEATHER RADIO OR YOUR LOCAL MEDIA FOR POSSIBLE
WARNINGS.

HEAVY RAIN MAY CAUSE MINOR STREET FLOODING AND PONDING OF WATER IN
LOW LYING AREAS SUCH AS UNDERPASSES. DO NOT DRIVE THROUGH FLOODED
ROADS.

&&

LAT...LON 4291 7202 4272 7209 4280 7246 4298 7237

$$

DOODY

The office that day

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

Issued	Product	Office	Counties	Lasted
Jul 3, 8:35 PM EDT	Special Marine Warning	BOX		55 min
Jul 4, 4:59 PM EDT	Special Weather Statement	BOX	Middlesex	61 min
Jul 4, 5:45 PM EDT	Special Weather Statement	BOX	Essex	60 min
Jul 4, 5:53 PM EDT	Special Marine Warning	BOX		67 min
Jul 4, 5:54 PM EDT	Severe Thunderstorm Warning	BOX	Essex	51 min
Jul 4, 6:28 PM EDT	Special Marine Warning	BOX		62 min
Jul 4, 6:40 PM EDT	Areal Flood Advisory	BOX	Essex	92 min
Jul 4, 6:42 PM EDT	Severe Thunderstorm Warning	BOX	Essex	44 min
Jul 4, 6:57 PM EDT	Areal Flood Advisory	BOX	Worcester	53 min
Jul 4, 7:08 PM EDT	Special Weather Statement	BOX	Essex	52 min
Jul 4, 7:13 PM EDT	Flash Flood Warning	BOX	Essex	59 min
Jul 4, 7:45 PM EDT	Special Weather Statement	BOX	Worcester	60 min
Jul 4, 7:46 PM EDT	Special Marine Warning	BOX		31 min
Jul 4, 1:12 PM EDT	Special Weather Statement	BOX	Cheshire	63 min
Jul 4, 2:52 PM EDT	Special Weather Statement	BOX	Hillsborough	53 min
Jul 4, 4:41 PM EDT	Special Weather Statement	BOX	Hillsborough	64 min
Jul 4, 6:00 PM EDT	Special Weather Statement	BOX	Cheshire, Hillsborough	60 min
Jul 4, 6:13 PM EDT	Special Weather Statement	BOX	Cheshire, Hillsborough	92 min

Nearby

Special Weather Statements in New Hampshire, 2011 Every special weather statement in 2011

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.