Alert archive / New Hampshire / Severe Thunderstorm Warnings in 2016

Severe Thunderstorm Warning 13, NWS Gray, ME

April 1, 2016Rockingham County, Strafford County, New Hampshire

NWS Gray, ME issued this severe thunderstorm warning at Apr 1, 2016, 8:55 PM EDT for Rockingham County, Strafford County, New Hampshire. It was in force for 25 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
Apr 1, 2016, 8:55 PM EDT (00:55 UTC)
Expired
Apr 1, 2016, 9:20 PM EDT
In force
25 min
Issued by
NWS Gray, ME
Area
Storm-based polygon

Counties Rockingham County, NH, Strafford County, NH

The radar

The Boston radar (KBOX), 120 km from the middle of the area, began a volume at 00:58 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 00:00Z, 0.9 hours before the alert went out and 123 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-pSkew-T log-p diagram, Gray, ME at 00:00Z on 2016-04-02Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 0 joules per kilogram.LCL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Gray, ME at 00:00Z on 2016-04-02The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -153 square meters per square second.1939587897117136156Sfc1 km3 km6 km9 kmRMLM
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
0 J/kg
Mixed-layer CIN
No buoyant parcel
Mixed-layer LCL
1113 m above ground
0-6 km bulk shear
86 kt
0-1 km storm-relative helicity
-153 m²/s²
0-3 km storm-relative helicity
-30 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

As transmitted.

827 
WUUS51 KGYX 020055
SVRGYX
NHC015-017-020145-
/O.NEW.KGYX.SV.W.0013.160402T0055Z-160402T0145Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE GRAY ME
855 PM EDT FRI APR 1 2016

THE NATIONAL WEATHER SERVICE IN GRAY MAINE HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  SOUTHEASTERN STRAFFORD COUNTY IN CENTRAL NEW HAMPSHIRE...
  CENTRAL ROCKINGHAM COUNTY IN SOUTHERN NEW HAMPSHIRE...

* UNTIL 945 PM EDT

* AT 855 PM EDT...DOPPLER RADAR INDICATED A SEVERE THUNDERSTORM
  CAPABLE OF PRODUCING QUARTER SIZE HAIL AND DAMAGING WINDS IN EXCESS
  OF 60 MPH. THIS STORM WAS LOCATED OVER AUBURN...AND MOVING EAST AT
  60 MPH.

* LOCATIONS IMPACTED INCLUDE...
  DERRY...PORTSMOUTH...DURHAM...EXETER...DOVER...BARRINGTON...EPPING...
  BRENTWOOD...GREENLAND...STRATHAM...NEWINGTON...NEWMARKET...RAYMOND...RYE...
  KINGSTON...CHESTER...DANVILLE...LEE...FREMONT AND DEERFIELD.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

SEVERE THUNDERSTORMS PRODUCE DAMAGING WINDS...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.

TORRENTIAL RAINFALL IS ALSO OCCURRING WITH THIS STORM...AND MAY LEAD
TO FLASH FLOODING. DO NOT DRIVE YOUR VEHICLE THROUGH FLOODED
ROADWAYS.

&&

LAT...LON 4301 7140 4304 7140 4305 7138 4322 7087
      4299 7077 4293 7133
TIME...MOT...LOC 0055Z 254DEG 52KT 4301 7140 

$$
MLE
2 follow-up statements
374 
WWUS51 KGYX 020104
SVSGYX

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE GRAY ME
904 PM EDT FRI APR 1 2016

NHC015-017-020145-
/O.CON.KGYX.SV.W.0013.000000T0000Z-160402T0145Z/
STRAFFORD NH-ROCKINGHAM NH-
904 PM EDT FRI APR 1 2016

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 945 PM EDT
FOR SOUTHEASTERN STRAFFORD AND CENTRAL ROCKINGHAM COUNTIES...

AT 904 PM EDT...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 EPPING...OR NEAR DURHAM...MOVING EAST
AT 65 MPH.

LOCATIONS IMPACTED INCLUDE...
PORTSMOUTH...DURHAM...EXETER...DOVER...BARRINGTON...EPPING...BRENTWOOD...
GREENLAND...NEWMARKET...RAYMOND...STRATHAM...NEWINGTON...CHESTER...LEE...
FREMONT...MADBURY...NEWFIELDS...NOTTINGHAM AND ROLLINSFORD.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

SEVERE THUNDERSTORMS PRODUCE DAMAGING WINDS...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.

TORRENTIAL RAINFALL IS ALSO OCCURRING WITH THIS STORM...AND MAY LEAD
TO FLASH FLOODING. DO NOT DRIVE YOUR VEHICLE THROUGH FLOODED
ROADWAYS.

&&

LAT...LON 4304 7122 4309 7117 4322 7087 4302 7078
      4297 7117
TIME...MOT...LOC 0104Z 255DEG 58KT 4308 7102 

$$
MLE
927 
WWUS51 KGYX 020120
SVSGYX

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE GRAY ME
920 PM EDT FRI APR 1 2016

NHC015-017-020130-
/O.CAN.KGYX.SV.W.0013.000000T0000Z-160402T0145Z/
STRAFFORD NH-ROCKINGHAM NH-
920 PM EDT FRI APR 1 2016

...THE SEVERE THUNDERSTORM WARNING FOR SOUTHEASTERN STRAFFORD AND
CENTRAL ROCKINGHAM COUNTIES IS CANCELLED...
                
THE STORM WHICH PROMPTED THE WARNING HAS WEAKENED BELOW SEVERE
LIMITS...AND NO LONGER POSES AN IMMEDIATE THREAT TO LIFE OR PROPERTY.
THEREFORE THE WARNING HAS BEEN CANCELLED.

LAT...LON 4304 7122 4309 7117 4322 7087 4302 7078
      4297 7117
TIME...MOT...LOC 0117Z 254DEG 52KT 4314 7071 

$$

The office that day

Everything else NWS Gray, ME issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Apr 1, 8:23 PM EDTSpecial Weather StatementGYXHillsborough52 min
Apr 1, 9:15 PM EDTSpecial Weather StatementGYXStrafford30 min
Apr 2, 3:18 PM EDTWind AdvisoryGYXBelknap, Carroll, Cheshire, Coos, Grafton, Hillsborough and 4 more29 hr
Apr 2, 4:26 PM EDTSpecial Weather StatementGYXCheshire, Sullivan34 min
Apr 2, 4:50 PM EDTSpecial Weather StatementGYXBelknap, Hillsborough, Merrimack, Rockingham, Strafford70 min

Nearby

Severe Thunderstorm Warnings in New Hampshire, 2016Every severe thunderstorm warning in 2016

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.