Alert archive / New Hampshire / Severe Thunderstorm Warnings in 2012
Severe Thunderstorm Warning 44, NWS Boston/Norton, MA
NWS Boston/Norton, MA issued this severe thunderstorm warning at Jul 17, 2012, 7:22 PM EDT for Hillsborough County, New Hampshire. 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
- Jul 17, 2012, 7:22 PM EDT (23:22 UTC)
- Expired
- Jul 17, 2012, 8:00 PM EDT
- In force
- 38 min
- Issued by
- NWS Boston/Norton, MA
- Area
- Storm-based polygon
County Hillsborough County, NH
The radar
The Boston radar (KBOX), 129 km from the middle of the area, began a volume at 23:24 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
Gray, ME (KGYX), launched 12:00Z, 11.4 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.
- Mixed-layer CAPE
- 61 J/kg
- Mixed-layer CIN
- -39 J/kg
- Mixed-layer LCL
- 1274 m above ground
- 0-6 km bulk shear
- 28 kt
- 0-1 km storm-relative helicity
- 54 m²/s²
- 0-3 km storm-relative helicity
- 113 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
290
WUUS51 KBOX 172322
SVRBOX
NHC011-180000-
/O.NEW.KBOX.SV.W.0044.120717T2322Z-120718T0000Z/
BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE TAUNTON MA
722 PM EDT TUE JUL 17 2012
THE NATIONAL WEATHER SERVICE IN TAUNTON HAS ISSUED A
* SEVERE THUNDERSTORM WARNING FOR...
NORTHEASTERN HILLSBOROUGH COUNTY IN SOUTHERN NEW HAMPSHIRE...
* UNTIL 800 PM EDT
* AT 718 PM EDT...DOPPLER RADAR INDICATED A SEVERE THUNDERSTORM
CAPABLE OF PRODUCING DAMAGING WINDS IN EXCESS OF 60 MPH. THIS
STORM WAS LOCATED NEAR BRADFORD...OR 6 MILES SOUTH OF NEW LONDON...
AND MOVING SOUTHEAST AT 50 MPH.
* LOCATIONS IMPACTED INCLUDE...
MANCHESTER...AMHERST...MONT VERNON...BEDFORD...GOFFSTOWN...
LITCHFIELD...MERRIMACK...DEERING...HILLSBOROUGH...WEARE...
NEW BOSTON AND FRANCESTOWN.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
SEVERE THUNDERSTORMS PRODUCE DAMAGING WINDS IN EXCESS OF 60 MPH...
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 4312 7185 4315 7167 4305 7164 4307 7152
4305 7151 4304 7146 4302 7145 4301 7139
4294 7137 4293 7145 4285 7143 4277 7153
4314 7203 4316 7202 4318 7204 4321 7191
TIME...MOT...LOC 2318Z 306DEG 42KT 4333 7195
$$
KJC1 follow-up statement
341
WWUS51 KBOX 172348
SVSBOX
SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE TAUNTON MA
748 PM EDT TUE JUL 17 2012
NHC011-180000-
/O.CON.KBOX.SV.W.0044.000000T0000Z-120718T0000Z/
HILLSBOROUGH NH-
748 PM EDT TUE JUL 17 2012
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 800 PM
EDT FOR NORTHEASTERN HILLSBOROUGH COUNTY...
AT 745 PM EDT...DOPPLER RADAR INDICATED A SEVERE THUNDERSTORM
CAPABLE OF PRODUCING DAMAGING WINDS IN EXCESS OF 60 MPH. THIS
STORM WAS LOCATED NEAR CONCORD...MOVING SOUTHEAST AT 50 MPH.
LOCATIONS IMPACTED INCLUDE...
MANCHESTER...AMHERST...MONT VERNON...BEDFORD...GOFFSTOWN...
LITCHFIELD...MERRIMACK...WEARE...NEW BOSTON AND FRANCESTOWN.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
SEVERE THUNDERSTORMS PRODUCE DAMAGING WINDS IN EXCESS OF 60 MILES
PER HOUR...DEADLY LIGHTNING AND VERY HEAVY RAIN. FOR YOUR PROTECTION
MOVE TO AN INTERIOR ROOM ON THE LOWEST FLOOR OF YOUR HOME OR
BUSINESS. HEAVY RAINS FLOOD ROADS QUICKLY SO DO NOT DRIVE INTO AREAS
WHERE WATER COVERS THE ROAD.
&&
LAT...LON 4305 7164 4307 7152 4305 7151 4304 7148
4304 7145 4302 7145 4301 7139 4294 7137
4293 7145 4285 7143 4277 7153 4302 7187
4312 7184 4315 7167
TIME...MOT...LOC 2345Z 306DEG 42KT 4314 7160
$$
SIPPRELLThe office that day
Everything else NWS Boston/Norton, MA issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 17, 3:56 AM EDT | Heat Advisory | BOX | Cheshire, Hillsborough | 15 hr |
| Jul 17, 6:52 PM EDT | Special Weather Statement | BOX | Hillsborough | 53 min |
Nearby
Severe Thunderstorm Warnings in New Hampshire, 2012Every severe thunderstorm warning 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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.