Alert archive / New Hampshire / Severe Thunderstorm Warnings in 2012
Severe Thunderstorm Warning 12, NWS Boston/Norton, MA
NWS Boston/Norton, MA issued this severe thunderstorm warning at May 29, 2012, 6:13 PM EDT for Cheshire County, Hillsborough County, New Hampshire. It was in force for 62 min. 6 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
- May 29, 2012, 6:13 PM EDT (22:13 UTC)
- Expired
- May 29, 2012, 7:15 PM EDT
- In force
- 62 min
- Issued by
- NWS Boston/Norton, MA
- Area
- Storm-based polygon
Counties Cheshire County, NH, Hillsborough County, NH
The radar
The Boston radar (KBOX), 149 km from the middle of the area, began a volume at 22:12 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 |
|---|---|---|---|
| May 29, 6:29 PM EDT | TSTM WND DMG | Alstead, NH | TREES AND WIRES DOWN ON PLEASANT STREET |
| May 29, 6:58 PM EDT | TSTM WND DMG | Walpole, NH | TREE DOWN ON BOOK CELLAR ROAD |
| May 29, 7:01 PM EDT | TSTM WND DMG | Keene, NH | TREES AND WIRES DOWN ON ARCH STREET |
| May 29, 7:06 PM EDT | TSTM WND DMG | Hancock, NH | TREES AND WIRES DOWN BLOCKING CAVENDAR ROAD |
| May 29, 7:06 PM EDT | HAIL 1.75 | Antrim, NH | FLOODED ROAD ON MT GILBOA ROAD |
| May 29, 7:25 PM EDT | HAIL 0.75 | West Swanzey, NH |
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.
| Issued | Product | Office | Lasted |
|---|---|---|---|
| May 29, 3:44 PM EDT | Severe Thunderstorm Watch | SPC | 5 hr |
The nearest sounding before it
Albany, NY (KALY), launched 12:00Z, 10.2 hours before the alert went out and 144 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
- 1908 J/kg
- Mixed-layer CIN
- -96 J/kg
- Mixed-layer LCL
- 1026 m above ground
- 0-6 km bulk shear
- 42 kt
- 0-1 km storm-relative helicity
- 123 m²/s²
- 0-3 km storm-relative helicity
- 141 m²/s²
- Significant tornado parameter
- 0.1
- Supercell composite
- 0.7
The text
As transmitted, in the capitals the NWS used until 2016.
601
WUUS51 KBOX 292213
SVRBOX
NHC005-011-292315-
/O.NEW.KBOX.SV.W.0012.120529T2213Z-120529T2315Z/
BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE TAUNTON MA
613 PM EDT TUE MAY 29 2012
THE NATIONAL WEATHER SERVICE IN TAUNTON HAS ISSUED A
* SEVERE THUNDERSTORM WARNING FOR...
CHESHIRE COUNTY IN SOUTHERN NEW HAMPSHIRE...
THIS INCLUDES THE CITY OF KEENE...
NORTHERN HILLSBOROUGH COUNTY IN SOUTHERN NEW HAMPSHIRE...
* UNTIL 715 PM EDT
* AT 609 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
SEVERE THUNDERSTORM CAPABLE OF PRODUCING QUARTER SIZE HAIL...AND
DAMAGING WINDS IN EXCESS OF 60 MPH. THIS STORM WAS LOCATED NEAR
STODDARD...OR 14 MILES NORTHEAST OF KEENE...AND WAS MOVING
NORTHEAST AT 30 MPH.
* SOME LOCATIONS IN THE WARNING INCLUDE...BENNINGTON...WINDSOR...
GREENFIELD...HILLSBOROUGH...DEERING...FRANCESTOWN...NEW BOSTON...
WEARE AND GOFFSTOWN.
IN ADDITION TO LARGE HAIL AND DAMAGING WINDS...FREQUENT LIGHTNING WAS
OCCURRING WITH THIS STORM. GET INDOORS OR INSIDE A VEHICLE NOW! DO
NOT SEEK SHELTER UNDER TREES. IF YOU CAN HEAR THUNDER...YOU ARE CLOSE
ENOUGH TO BE STRUCK BY LIGHTNING.
&&
LAT...LON 4312 7185 4315 7167 4306 7164 4307 7152
4302 7143 4278 7251 4285 7256 4292 7253
4295 7254 4301 7245 4305 7247 4308 7245
4316 7246 4314 7238 4316 7238 4319 7217
4314 7217 4313 7205 4319 7203 4321 7191
TIME...MOT...LOC 2213Z 243DEG 32KT 4306 7201
$$
FRANK1 follow-up statement
158
WWUS51 KBOX 292244
SVSBOX
SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE TAUNTON MA
644 PM EDT TUE MAY 29 2012
NHC005-011-292315-
/O.CON.KBOX.SV.W.0012.000000T0000Z-120529T2315Z/
CHESHIRE NH-HILLSBOROUGH NH-
644 PM EDT TUE MAY 29 2012
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 715 PM EDT
FOR NORTHERN HILLSBOROUGH AND CHESHIRE COUNTIES...
AT 642 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUED TO
INDICATE A SEVERE THUNDERSTORM CAPABLE OF PRODUCING QUARTER SIZE
HAIL...AND DAMAGING WINDS IN EXCESS OF 60 MPH. THIS STORM WAS
LOCATED NEAR DEERING...OR 6 MILES SOUTH OF HENNIKER...MOVING
NORTHEAST AT 35 MPH.
OTHER LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO NEW
BOSTON...WEARE AND GOFFSTOWN
PRECAUTIONARY/PREPAREDNESS ACTIONS...
A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL 1000 PM EDT
TUESDAY EVENING FOR NORTHERN CONNECTICUT AND WESTERN MASSACHUSETTS
AND SOUTHERN NEW HAMPSHIRE.
&&
LAT...LON 4312 7185 4315 7167 4306 7164 4307 7152
4302 7144 4278 7250 4285 7256 4294 7246
4295 7254 4299 7243 4307 7234 4316 7245
4313 7234 4314 7234 4316 7238 4318 7217
4314 7217 4313 7205 4319 7202 4321 7191
TIME...MOT...LOC 2244Z 243DEG 32KT 4310 7182
$$
FRANKThe office that day
Everything else NWS Boston/Norton, MA issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| May 29, 3:04 PM EDT | Special Weather Statement | BOX | Cheshire | 41 min |
| May 29, 3:16 PM EDT | Special Weather Statement | BOX | Cheshire | 44 min |
| May 29, 3:19 PM EDT | Severe Thunderstorm Warning | BOX | Cheshire | 41 min |
| May 29, 3:30 PM EDT | Tornado Warning | BOX | Cheshire | 45 min |
| May 29, 3:42 PM EDT | Special Weather Statement | BOX | Cheshire | 48 min |
| May 29, 3:51 PM EDT | Severe Thunderstorm Warning | BOX | Cheshire, Hillsborough | 54 min |
| May 29, 4:24 PM EDT | Areal Flood Advisory | BOX | Cheshire, Hillsborough | 3 hr |
| May 29, 4:37 PM EDT | Tornado Warning | BOX | Cheshire | 38 min |
| May 29, 4:45 PM EDT | Flash Flood Warning | BOX | Cheshire | 3 hr |
| May 29, 5:09 PM EDT | Severe Thunderstorm Warning | BOX | Cheshire, Hillsborough | 66 min |
| May 29, 6:39 PM EDT | Severe Thunderstorm Warning | BOX | Cheshire | 66 min |
| May 29, 7:09 PM EDT | Severe Thunderstorm Warning | BOX | Cheshire, Hillsborough | 25 min |
| May 29, 7:32 PM EDT | Areal Flood Advisory | BOX | Hillsborough | 3 hr |
| May 29, 7:44 PM EDT | Areal Flood Warning | BOX | Cheshire | 6 hr |
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; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.