Alert archive / New Hampshire / Severe Thunderstorm Warnings in 1998

Severe Thunderstorm Warning 81, NWS Boston/Norton, MA

August 25, 1998Hillsborough County, New Hampshire

NWS Boston/Norton, MA issued this severe thunderstorm warning at Aug 25, 1998, 5:00 PM EDT for Hillsborough County, New Hampshire. It was in force for 30 min. 1 report came from inside the area while it was in force.

The area

The counties it named, with what was reported inside it.

The facts

Issued
Aug 25, 1998, 5:00 PM EDT (21:00 UTC)
Expired
Aug 25, 1998, 5:30 PM EDT
In force
30 min
Issued by
NWS Boston/Norton, MA
Area
Whole counties

County Hillsborough County, NH

The radar

The Boston radar (KBOX), 117 km from the middle of the area, began a volume at 21:03 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

TimeReportWhereRemark
Aug 25, 5:11 PM EDTThunderstorm Wind 50Weare, NH

NCEI Storm Data entries that began inside the alert's area while it was in force. Before 2003 the local storm report archive is thin, so this is the record of what happened rather than what was phoned in.

The nearest sounding before it

Gray, ME (KGYX), launched 12:00Z, 9.0 hours before the alert went out and 160 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 12:00Z on 1998-08-25Temperature 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°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Gray, ME at 12:00Z on 1998-08-25The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 28 square meters per square second.1939587897117Sfc1 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
1531 m above ground
0-6 km bulk shear
39 kt
0-1 km storm-relative helicity
28 m²/s²
0-3 km storm-relative helicity
56 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

As transmitted, in the capitals the NWS used until 2016.

568 
WUUS1 KBOS 252101 RRA
SVRBOS
NHC011-252130-

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE TAUNTON MA
500 PM EDT TUE AUG 25 1998

THE NATIONAL WEATHER SERVICE IN TAUNTON HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
     NORTHERN HILLSBOROUGH COUNTY IN NEW HAMPSHIRE

* UNTIL 530 PM EDT

* AT 453 PM EDT NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM 2 MILES SOUTHWEST OF HILLSBOROUGH...OR ABOUT 20
  MILES NORTH OF JAFFREY...MOVING EAST AT 30 MILES PER HOUR.

* THE SEVERE THUNDERSTORM WILL BE NEAR...
  WEARE AT 505 PM EDT
  10 MILES EAST OF WEARE AT 525 PM EDT

SEVERE THUNDERSTORMS PRODUCE LARGE HAIL AND/OR WINDS STRONG ENOUGH TO
KNOCK DOWN TREES AND POWER LINES. MOVE INDOORS AND STAY AWAY FROM
WINDOWS.

What forecasters said that day

The local office's own words before this severe thunderstorm warning went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.

In the hours before

Special weather statement, Aug 25, 2:00 PM EDT, 3 hours before
MAZ007-015-016-019>024-RIZ002-004>007-ANZ230>235-237-250-261200-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE TAUNTON MA
2 PM EDT TUE AUG 25 1998

...PEOPLE IN SOUTHEASTERN NEW ENGLAND SHOULD MONITOR LATER
ADVISORIES ON HURRICANE BONNIE...

EARLY INDICATIONS SUGGEST THAT HURRICANE BONNIE MAY MAKE A CLOSE
APPROACH TO SOUTHEAST NEW ENGLAND WITH THE CENTER PASSING JUST SOUTH
AND EAST OF NANTUCKET THURSDAY.  RESIDENTS AND VISITORS ALONG THE
MASSACHUSETTS AND RHODE ISLAND COASTS...BUT ESPECIALLY OVER CAPE
COD...NANTUCKET AND MARTHAS VINEYARD SHOULD BE PREPARED TO TAKE
APPROPRIATE ACTION SHOULD A HURRICANE WATCH NEED TO BE ISSUED.

A HEAVY SURF ADVISORY REMAINS IN EFFECT FOR THE MASSACHUSETTS AND
RHODE ISLAND COASTS.  EXPOSED SOUTH COASTAL BEACHES WILL BE
ESPECIALLY VULNERABLE TO LARGE BREAKERS AND DANGEROUS RIP CURRENTS.
DO NOT STAND TOO NEAR HEAVY BREAKING SURF AS LARGER WAVES CAN SNEAK
UP SUDDENLY.

MARINERS SHOULD NOT VENTURE FAR FROM PORT.  MARINERS SHOULD ALSO
HAVE A PLAN READY TO SECURE MOORINGS OR TAKE OTHER PROTECTIVE ACTION
FOR THEIR BOATS SHOULD A HURRICANE WATCH BE ISSUED.  THIS IS
ESPECIALLY TRUE FOR BOATS ALONG CAPE COD...NANTUCKET AND MARTHAS
VINEYARD.

ALTHOUGH THERE IS UNCERTAINTY IN THE TRACK AND TIMING OF HURRICANE
BONNIE...THERE IS AN INCREASING RISK THAT BONNIE WILL PASS CLOSE
ENOUGH TO PRODUCE WINDS OF AT LEAST TROPICAL STORM FORCE AND
RAINFALL IN EXCESS OF 4 INCHES OVER CAPE COD AND THE ISLANDS.  THE
GREATEST IMPACT FROM BONNIE WILL LIKELY BE LATE WEDNESDAY NIGHT AND
THURSDAY.  TROPICAL STORM FORCE GUSTS MAY REACH AS FAR NORTH AND
WEST AS THE BOSTON AND PROVIDENCE METRO AREAS.

MARINERS AND OTHERS ALONG THE MASSACHUSETTS AND RHODE ISLAND COASTS
SHOULD CLOSELY MONITOR LATER STATEMENTS FROM THE NATIONAL WEATHER
SERVICE.  STAY AWAY FROM BREAKING SURF TO AVOID RISKING YOUR LIFE OR
THAT OF A POTENTIAL RESCUER.

THOMPSON
Special weather statement, Aug 25, 2:00 PM EDT, 3 hours before
MAZ007-015-016-019>024-RIZ002-004>007-ANZ230>235-237-250-261200-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE TAUNTON MA
2 PM EDT TUE AUG 25 1998

...PEOPLE IN SOUTHEASTERN NEW ENGLAND SHOULD MONITOR LATER
ADVISORIES ON HURRICANE BONNIE...

EARLY INDICATIONS SUGGEST THAT HURRICANE BONNIE MAY MAKE A CLOSE
APPROACH TO SOUTHEAST NEW ENGLAND WITH THE CENTER PASSING JUST SOUTH
AND EAST OF NANTUCKET THURSDAY.  RESIDENTS AND VISITORS ALONG THE
MASSACHUSETTS AND RHODE ISLAND COASTS...BUT ESPECIALLY OVER CAPE
COD...NANTUCKET AND MARTHAS VINEYARD SHOULD BE PREPARED TO TAKE
APPROPRIATE ACTION SHOULD A HURRICANE WATCH NEED TO BE ISSUED.

A HEAVY SURF ADVISORY REMAINS IN EFFECT FOR THE MASSACHUSETTS AND
RHODE ISLAND COASTS.  EXPOSED SOUTH COASTAL BEACHES WILL BE
ESPECIALLY VULNERABLE TO LARGE BREAKERS AND DANGEROUS RIP CURRENTS.
DO NOT STAND TOO NEAR HEAVY BREAKING SURF AS LARGER WAVES CAN SNEAK
UP SUDDENLY.

MARINERS SHOULD NOT VENTURE FAR FROM PORT.  MARINERS SHOULD ALSO
HAVE A PLAN READY TO SECURE MOORINGS OR TAKE OTHER PROTECTIVE ACTION
FOR THEIR BOATS SHOULD A HURRICANE WATCH BE ISSUED.  THIS IS
ESPECIALLY TRUE FOR BOATS ALONG CAPE COD...NANTUCKET AND MARTHAS
VINEYARD.

ALTHOUGH THERE IS UNCERTAINTY IN THE TRACK AND TIMING OF HURRICANE
BONNIE...THERE IS AN INCREASING RISK THAT BONNIE WILL PASS CLOSE
ENOUGH TO PRODUCE WINDS OF AT LEAST TROPICAL STORM FORCE AND
RAINFALL IN EXCESS OF 4 INCHES OVER CAPE COD AND THE ISLANDS.  THE
GREATEST IMPACT FROM BONNIE WILL LIKELY BE LATE WEDNESDAY NIGHT AND
THURSDAY.  TROPICAL STORM FORCE GUSTS MAY REACH AS FAR NORTH AND
WEST AS THE BOSTON AND PROVIDENCE METRO AREAS.

MARINERS AND OTHERS ALONG THE MASSACHUSETTS AND RHODE ISLAND COASTS
SHOULD CLOSELY MONITOR LATER STATEMENTS FROM THE NATIONAL WEATHER
SERVICE.  STAY AWAY FROM BREAKING SURF TO AVOID RISKING YOUR LIFE OR
THAT OF A POTENTIAL RESCUER.

THOMPSON

Nearby

Severe Thunderstorm Warnings in New Hampshire, 1998Every severe thunderstorm warning in 1998

Sources

The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; verification from NCEI's Storm Data; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.