Alert archive / New Hampshire / Severe Thunderstorm Warnings in 2011
Severe Thunderstorm Warning 80, NWS Boston/Norton, MA
NWS Boston/Norton, MA issued this severe thunderstorm warning at Aug 1, 2011, 1:55 PM EDT for Cheshire County, New Hampshire. It was in force for 43 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, 1:55 PM EDT (17:55 UTC)
- Expired
- Aug 1, 2011, 2:38 PM EDT
- In force
- 43 min
- Issued by
- NWS Boston/Norton, MA
- Area
- Storm-based polygon
County Cheshire County, NH
The radar
The Boston radar (KBOX), 153 km from the middle of the area, began a volume at 17:55 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, 5.9 hours before the alert went out and 139 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.
100 WUUS51 KBOX 011755 SVRBOX NHC005-011900- /O.NEW.KBOX.SV.W.0080.110801T1755Z-110801T1900Z/ BULLETIN - EAS ACTIVATION REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE TAUNTON MA 155 PM EDT MON AUG 1 2011 THE NATIONAL WEATHER SERVICE IN TAUNTON HAS ISSUED A * SEVERE THUNDERSTORM WARNING FOR... NORTH CENTRAL CHESHIRE COUNTY IN SOUTHERN NEW HAMPSHIRE... * UNTIL 300 PM EDT * AT 150 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 GILSUM...AND WAS MOVING EAST AT 10 MPH. * SOME LOCATIONS IN THE WARNING INCLUDE...MARLOW...SULLIVAN AND STODDARD. 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. IF YOU CAN HEAR THUNDER...YOU ARE CLOSE ENOUGH TO BE STRUCK BY LIGHTNING. DRIVERS SHOULD BE ALERT FOR PONDING OF WATER AND AVOID FLOODED ROADS. && LAT...LON 4313 7208 4295 7216 4305 7238 4315 7236 TIME...MOT...LOC 1755Z 285DEG 7KT 4308 7228 $$ JWD
1 follow-up statement
368 WWUS51 KBOX 011838 SVSBOX SEVERE WEATHER STATEMENT NATIONAL WEATHER SERVICE TAUNTON MA 238 PM EDT MON AUG 1 2011 NHC005-011848- /O.CAN.KBOX.SV.W.0080.000000T0000Z-110801T1900Z/ CHESHIRE NH- 238 PM EDT MON AUG 1 2011 ...THE SEVERE THUNDERSTORM WARNING FOR NORTH CENTRAL CHESHIRE COUNTY IS CANCELLED... THE THUNDERSTORM WEAKENED OVER CHESHIRE COUNTY. A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL 1000 PM EDT MONDAY EVENING FOR NORTHERN CONNECTICUT AND MASSACHUSETTS AND SOUTHERN NEW HAMPSHIRE AND RHODE ISLAND. LAT...LON 4313 7208 4295 7216 4305 7238 4315 7236 TIME...MOT...LOC 1838Z 285DEG 7KT 4306 7217 $$ JWD
The 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, 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 |
| Aug 1, 3:38 PM EDT | Severe Thunderstorm Warning | BOX | Cheshire, Hillsborough | 40 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.