Alert archive / New Hampshire / Special Weather Statements in 2012

Special Weather Statement, NWS Boston/Norton, MA

August 4, 2012Hillsborough County, New Hampshire

NWS Boston/Norton, MA issued this special weather statement at Aug 4, 2012, 2:43 PM EDT for Hillsborough County, New Hampshire. It was in force for 32 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: Aug 4, 2012, 2:43 PM EDT (18:43 UTC)
Expired: Aug 4, 2012, 3:15 PM EDT
In force: 32 min
Issued by: NWS Boston/Norton, MA

County Hillsborough County, NH

The radar

The Boston radar (KBOX), 138 km from the middle of the area, began a volume at 18:42 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

Time	Report	Where	Remark
Aug 4, 2:52 PM EDT	HAIL 0.88	Weare, NH	LASTED 10 MINUTES 240 - 250 PM

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

The nearest sounding before it

Gray, ME (KGYX), launched 12:00Z, 6.7 hours before the alert went out and 146 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: 18 J/kg
Mixed-layer CIN: -285 J/kg
Mixed-layer LCL: 1552 m above ground
0-6 km bulk shear: 15 kt
0-1 km storm-relative helicity: 53 m²/s²
0-3 km storm-relative helicity: 102 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.

404 
WWUS81 KBOX 041843
SPSBOX

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE TAUNTON MA
243 PM EDT SAT AUG 4 2012

NHZ015-041915-
WESTERN AND CENTRAL HILLSBOROUGH NH-
243 PM EDT SAT AUG 4 2012

AT 238 PM EDT NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A 
STRONG THUNDERSTORM CAPABLE OF PRODUCING SMALL HAIL AND LOCALLY 
HEAVY DOWNPOURS OVER WEARE...OR ABOUT 6 MILES SOUTHEAST OF 
HENNIKER...MOVING NORTHEAST AT 10 MPH.

MINOR STREET FLOODING AND PONDING OF WATER IN POOR DRAINAGE AREAS IS 
POSSIBLE.

&&

LAT...LON 4314 7166 4310 7165 4303 7179 4311 7186
      4313 7181 4315 7169 4315 7167

$$
FIELD

The office that day

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

Issued	Product	Office	Counties	Lasted
Aug 4, 1:17 PM EDT	Heat Advisory	BOX	Norfolk, Worcester	3 hr
Aug 4, 1:42 PM EDT	Special Weather Statement	BOX	Franklin	48 min
Aug 4, 1:53 PM EDT	Areal Flood Advisory	BOX	Franklin	3 hr
Aug 4, 2:38 PM EDT	Flash Flood Warning	BOX	Franklin	3 hr
Aug 4, 4:23 PM EDT	Areal Flood Advisory	BOX	Franklin, Hampshire	2 hr
Aug 4, 5:41 PM EDT	Special Weather Statement	BOX	Middlesex	34 min
Aug 4, 5:43 PM EDT	Severe Thunderstorm Warning	BOX	Middlesex, Worcester	47 min
Aug 4, 6:02 PM EDT	Areal Flood Advisory	BOX	Franklin, Middlesex, Worcester	3 hr
Aug 4, 1:57 PM EDT	Special Weather Statement	BOX	Hillsborough	48 min
Aug 4, 3:36 PM EDT	Special Weather Statement	BOX	Hillsborough	39 min
Aug 4, 3:47 PM EDT	Severe Thunderstorm Warning	BOX	Hillsborough	43 min
Aug 4, 3:59 PM EDT	Areal Flood Advisory	BOX	Hillsborough	3 hr
Aug 4, 4:43 PM EDT	Areal Flood Advisory	BOX	Hillsborough	3 hr
Aug 4, 5:06 PM EDT	Special Weather Statement	BOX	Hillsborough	54 min
Aug 4, 5:28 PM EDT	Special Weather Statement	BOX	Hillsborough	32 min
Aug 4, 7:07 PM EDT	Special Weather Statement	BOX	Hillsborough	53 min

Nearby

Special Weather Statements in New Hampshire, 2012 Every special weather statement in 2012

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.