Alert archive / New Hampshire / Severe Thunderstorm Warnings in 2011
Severe Thunderstorm Warning 88, NWS Boston/Norton, MA
NWS Boston/Norton, MA issued this severe thunderstorm warning at Aug 1, 2011, 3:38 PM EDT for Cheshire County, Hillsborough County, New Hampshire. It was in force for 40 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
- Aug 1, 2011, 3:38 PM EDT (19:38 UTC)
- Expired
- Aug 1, 2011, 4:18 PM EDT
- In force
- 40 min
- Issued by
- NWS Boston/Norton, MA
- Area
- Storm-based polygon
Counties Cheshire County, NH, Hillsborough County, NH
The radar
The Boston radar (KBOX), 145 km from the middle of the area, began a volume at 19:41 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 watch it was issued in
The SPC watch in force over the same counties when this warning went out.
| Issued | Product | Office | Lasted |
|---|---|---|---|
| Aug 1, 2:34 PM EDT | Severe Thunderstorm Watch | SPC | 6 hr |
The nearest sounding before it
Albany, NY (KALY), launched 12:00Z, 7.6 hours before the alert went out and 143 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
- 1159 J/kg
- Mixed-layer CIN
- -92 J/kg
- Mixed-layer LCL
- 824 m above ground
- 0-6 km bulk shear
- 17 kt
- 0-1 km storm-relative helicity
- 96 m²/s²
- 0-3 km storm-relative helicity
- 116 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
103
WUUS51 KBOX 011938
SVRBOX
NHC005-011-012030-
/O.NEW.KBOX.SV.W.0088.110801T1938Z-110801T2030Z/
BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE TAUNTON MA
338 PM EDT MON AUG 1 2011
THE NATIONAL WEATHER SERVICE IN TAUNTON HAS ISSUED A
* SEVERE THUNDERSTORM WARNING FOR...
NORTHERN CHESHIRE COUNTY IN SOUTHERN NEW HAMPSHIRE...
WEST CENTRAL HILLSBOROUGH COUNTY IN SOUTHERN NEW HAMPSHIRE...
* UNTIL 430 PM EDT
* AT 336 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
SURRY...OR 8 MILES SOUTHEAST OF BELLOWS FALLS...AND WAS MOVING EAST
AT 25 MPH.
* SOME LOCATIONS IN THE WARNING INCLUDE...GILSUM...SULLIVAN...
STODDARD...NELSON AND HARRISVILLE.
SEVERE THUNDERSTORMS PRODUCE DAMAGING WINDS AND LARGE HAIL...AS WELL
AS DEADLY LIGHTNING AND TORRENTIAL RAIN. GET TO SAFE SHELTER NOW...
INSIDE A STURDY BUILDING OR IN A VEHICLE. DO NOT SEEK SHELTER UNDER
TREES. DRIVERS SHOULD BE ALERT FOR PONDING OF WATER AND AVOID
FLOODED ROADS.
A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL 1000 PM EDT
MONDAY EVENING FOR NORTHERN CONNECTICUT AND MASSACHUSETTS AND
SOUTHERN NEW HAMPSHIRE AND CENTRAL RHODE ISLAND.
&&
LAT...LON 4306 7192 4291 7202 4297 7226 4305 7241
4314 7233
TIME...MOT...LOC 1938Z 289DEG 20KT 4308 7230
$$
FIELD1 follow-up statement
030
WWUS51 KBOX 012018
SVSBOX
SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE TAUNTON MA
418 PM EDT MON AUG 1 2011
NHC005-011-012027-
/O.CAN.KBOX.SV.W.0088.000000T0000Z-110801T2030Z/
CHESHIRE NH-HILLSBOROUGH NH-
418 PM EDT MON AUG 1 2011
...THE SEVERE THUNDERSTORM WARNING FOR WEST CENTRAL HILLSBOROUGH AND
NORTHERN CHESHIRE COUNTIES IS CANCELLED...
SHOWERS AND THUNDERSTORMS WERE STILL OCCURING NEAR GILSUM AS OF 417
PM BUT THERE NO LONGER AN IMMINENT THREAT OF SEVERE WEATHER IN THAT
AREA.
A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL 1000 PM EDT
MONDAY EVENING FOR NORTHERN CONNECTICUT AND MASSACHUSETTS AND
SOUTHERN NEW HAMPSHIRE AND CENTRAL RHODE ISLAND.
LAT...LON 4306 7192 4291 7202 4297 7226 4305 7241
4314 7233
TIME...MOT...LOC 2017Z 295DEG 19KT 4302 7220
$$
FIELDThe office that day
Everything else NWS Boston/Norton, MA issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 1, 1:41 PM EDT | Special Weather Statement | BOX | Cheshire | 49 min |
| Aug 1, 1:55 PM EDT | Severe Thunderstorm Warning | BOX | Cheshire | 43 min |
| Aug 1, 2:08 PM EDT | Areal Flood Advisory | BOX | Cheshire, Hillsborough | 3 hr |
| Aug 1, 2:42 PM EDT | Special Weather Statement | BOX | Cheshire | 48 min |
| Aug 1, 2:50 PM EDT | Areal Flood Advisory | BOX | Cheshire | 2 hr |
| Aug 1, 3:18 PM EDT | Severe Thunderstorm Warning | BOX | Cheshire | 42 min |
| Aug 1, 3:25 PM EDT | Special Weather Statement | BOX | Cheshire | 35 min |
Nearby
Severe Thunderstorm Warnings in New Hampshire, 2011Every severe thunderstorm warning 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.