Alert archive / Connecticut / Severe Thunderstorm Warnings in 1998
Severe Thunderstorm Warning 71, NWS Boston/Norton, MA
NWS Boston/Norton, MA issued this severe thunderstorm warning at Jul 20, 1998, 5:38 PM EDT for Capitol Planning Region, Connecticut. It was in force for 47 min. No storm report in the archive falls inside the area while it was in force.
The area
The counties it named.
The facts
- Issued
- Jul 20, 1998, 5:38 PM EDT (21:38 UTC)
- Expired
- Jul 20, 1998, 6:25 PM EDT
- In force
- 47 min
- Issued by
- NWS Boston/Norton, MA
- Area
- Whole counties
County Capitol Planning Region, CT
The radar
The Brookhaven radar (KOKX), 109 km from the middle of the area, began a volume at 21:41 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 nearest sounding before it
Brookhaven, NY (KOKX), launched 12:00Z, 9.6 hours before the alert went out and 109 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
- 1004 J/kg
- Mixed-layer CIN
- -48 J/kg
- Mixed-layer LCL
- 719 m above ground
- 0-6 km bulk shear
- 30 kt
- 0-1 km storm-relative helicity
- 175 m²/s²
- 0-3 km storm-relative helicity
- 231 m²/s²
- Significant tornado parameter
- 0.6
- Supercell composite
- 4.5
The text
As transmitted, in the capitals the NWS used until 2016.
000 TTAA00 KBOS 202137 RRA SVRBOS CTC003-202215- BULLETIN - EAS ACTIVATION REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE TAUNTON MA 538 PM EDT MON JUL 20 1998 THE NATIONAL WEATHER SERVICE IN TAUNTON HAS ISSUED A * SEVERE THUNDERSTORM WARNING FOR... HARTFORD COUNTY IN NORTH CENTRAL CONNECTICUT * UNTIL 625 PM EDT * AT 535 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A SEVERE THUNDERSTORM OVER TOLLAND IN SOUTHWEST HAMPDEN COUNTY WITH A SECOND STORM OVER COLEBROOK...MOVING SOUTHEAST AT 30 MPH. * TOWNS IN/NEAR THE PATH OF THIS STORM INCLUDE... HARTLAND AT 545 PM EAST GRANDBY AT 545 PM SIMSBURY AT 550 PM WINDSOR LOCKS AT 555 PM BLOOMFIELD AT 600 PM THESE STORMS HAVE HAD A HISTORY OF PRODUCING WIND DAMAGE AND LARGE HAIL. SEVERE THUNDERSTORMS PRODUCE LARGE HAIL AND/OR WINDS STRONG ENOUGH TO KNOCK DOWN TREES AND POWER LINES. MOVE INDOORS AND STAY AWAY FROM WINDOWS. DRV/JN
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, Jul 20, 11:38 AM EDT, 6 hours before
MAZ002>019-CTZ002>004-RIZ001>006-202300- SEVERE WEATHER OUTLOOK NATIONAL WEATHER SERVICE BOSTON MA 1138 AM EDT MON JUL 20 1998 ...ISOLATED SEVERE THUNDERSTORMS WITH DAMAGING WIND AND LARGE HAIL ARE EXPECTED IN THE REGION FROM NEAR BOSTON TO WILLIMANTIC AND HARTFORD CONNECTICUT NORTHWARD TO WORCESTER AND NASHUA NEW HAMPSHIRE THIS AFTERNOON... THUNDERSTORMS HAVE ALREADY PRODUCED ONE-HALF INCH DIAMETER HAIL IN NORTH CENTRAL CONNECTICUT. THESE STORMS ARE LIKELY TO BECOME EVEN STRONGER BETWEEN NOON AND 4 PM...ESPECIALLY FROM NORTHEAST CONNECTICUT INTO CENTRAL AND NORTHEAST MASSACHUSETTS. IN ADDITION TO THE THREAT FOR LARGE HAIL AND DAMAGING WIND GUSTS...BRIEF STREET FLOODING FROM TORRENTIAL RAINS WILL OCCUR IN A FEW LOCATIONS FROM NEAR WORCESTER INTO THE BOSTON METRO AREA. MARINE INTERESTS IN THE EASTERN MASSACHUSETTS COASTAL WATERS FROM MARSHFIELD TO BOSTON HARBOR NORTH TO THE MOUTH OF THE MERRIMACK RIVER SHOULD BE PREPARED FOR THE POSSIBILITY OF SUDDEN STRONG WIND GUSTS OVER 35 KNOTS NEAR 1 OR 2 STORMS THIS AFTERNOON. ELSEWHERE...IF THUNDERSTORMS DEVELOP AGAIN IN WESTERN MASSACHUSETTS DURING MID OR LATE AFTERNOON INTO THE MONADNOCKS...A FEW OF THOSE WOULD LIKELY PRODUCE LARGE HAIL AND DAMAGING WIND. STAY TUNED TO NOAA WEATHER RADIO AND YOUR LOCAL MEDIA FOR ANY ADDITIONAL STATEMENTS...WATCHES AND WARNINGS. DRAG
Local storm report, Jul 20, 1:09 PM EDT, 4 hours 29 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE TAUNTON MASSACHUSETTS
109 PM EDT MON JUL 20 1998
TIME(EDT) .....CITY LOCATION..... STATE ...EVENT/REMARKS...
....COUNTY LOCATION....
0105 PM WEST BRIDGEWATER MA 1 INCH HAIL
07/20/98 PLYMOUTH DIME TO 1 INCH DIAMTER
HAIL VIA SKYWARN REPORTLocal storm report, Jul 20, 3:03 PM EDT, 2 hours 35 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE TAUNTON MASSACHUSETTS
303 PM EDT MON JUL 20 1998
TIME(EDT) .....CITY LOCATION..... STATE ...EVENT/REMARKS...
....COUNTY LOCATION....
0105 PM WEST BRIDGEWATER MA 1 INCH HAIL
07/20/98 PLYMOUTH DIME TO 1 INCH DIAMTER
HAIL VIA SKYWARN REPORT
0115 PM MARSHFIELD MA WIND DAMAGE
07/20/98 PLYMOUTH 40 TO 50 TREE BRANCHES
BLOWN DOWN AS REPORTED BY
DPW.Local storm report, Jul 20, 5:25 PM EDT, 13 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE TAUNTON MASSACHUSETTS
525 PM EDT MON JUL 20 1998
TIME(EDT) .....CITY LOCATION..... STATE ...EVENT/REMARKS...
....COUNTY LOCATION....
0105 PM WEST BRIDGEWATER MA 1 INCH HAIL
07/20/98 PLYMOUTH DIME TO 1 INCH DIAMTER
HAIL VIA SKYWARN REPORT
0115 PM MARSHFIELD MA WIND DAMAGE
07/20/98 PLYMOUTH 40 TO 50 TWO-INCH DIAMETER
BRANCHES BLOWN DOWN...PER
DPW
0459 PM EASTHAMPTON MA WIND DAMAGE
07/20/98 HAMPSHIRE NUMEROUS 4 INCH DIAMETER
TREE LIMBS COVERING
ROAD...PER AMATEUR RADIO
0513 PM SPRINGFIELD MA .88 INCH HAIL
07/20/98 HAMPDEN NICKEL SIZE HAIL IN
SPRINGFIELD PER AMATEUR
RADIO OPERATOR.Nearby
Severe Thunderstorm Warnings in Connecticut, 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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.