Alert archive / New Hampshire / Severe Thunderstorm Warnings in 1990
Severe Thunderstorm Warning 10, NWS Gray, ME
NWS Gray, ME issued this severe thunderstorm warning at Jul 20, 1990, 1:46 PM EDT for Carroll County, New Hampshire. It was in force for 59 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
- Jul 20, 1990, 1:46 PM EDT (17:46 UTC)
- Expired
- Jul 20, 1990, 2:45 PM EDT
- In force
- 59 min
- Issued by
- NWS Gray, ME
- Area
- Whole counties
County Carroll County, NH
The radar
The WSR-88D network and its archive begin in 1991, so there is no radar volume for this alert.
What was reported inside it
| Time | Report | Where | Remark |
|---|---|---|---|
| Jul 20, 2:05 PM EDT | Thunderstorm Wind 0 | Carroll, 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. Storm Data before 1996 records only tornadoes, thunderstorm wind and hail.
The nearest sounding before it
Gray, ME (KGYX), launched 12:00Z, 5.8 hours before the alert went out and 76 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
- 0 J/kg
- Mixed-layer CIN
- No buoyant parcel
- Mixed-layer LCL
- 3583 m above ground
- 0-6 km bulk shear
- 43 kt
- 0-1 km storm-relative helicity
- 72 m²/s²
- 0-3 km storm-relative helicity
- 107 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
The text of this product is not in the archive. The NWS text archive before 2002 is incomplete.
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, 1:04 PM EDT, 42 minutes before
NHZALL-201900- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE CONCORD NH 100 PM EDT FRI JUL 20 1990 ...SHOWERS AND THUNDERSTORMS WERE BEGINNING TO DEVELOP ACROSS SOUTHERN AND CENTRAL NEW HAMPSHIRE... AT 1250 PM...A THUNDERSTORM WITH VERY HEAVY RAIN AND POSSIBLY STRONG GUSTY WINDS HAS RAPIDLY DEVELOPED JUST NORTHWEST OF THE DURHAM AREA IN SOUTHERN STRAFFORD COUNTY AND WILL MOVE EAST AND INTO SOUTHWEST MAINE WITHIN THE NEXT HALF HOUR. ANOTHER THUNDERSTORM WAS LOCATED NEAR PLYMOUTH IN SOUTHERN GRAFTON COUNTY AND WILL MOVE EAST AND JUST NORTH OF THE LAKE OSSIPEE AREA IN THE NEXT HOUR. OTHER THUNDERSTORMS WILL BE QUICK TO DEVELOP IN THE HOT AND HUMID AIR OVER THE STATE DURING THE AFTERNOON. IF YOU ARE INVOLVED IN ANY OUTSIDE ACTIVITY KEEP AN EYE ON THE SKY AND SEEK SHELTER AT THE FIRST SIGN OF ANY THREATENING WEATHER. WL
Special weather statement, Jul 20, 1:07 PM EDT, 39 minutes before
MEZALL-180300- SPECIAL WEATHER STATEMENT AND SPECIAL MARINE STATEMENT NATIONAL WEATHER SERVICE PORTLAND ME 105 PM EDT FRI JUL 20 1990 ...A STRONG THUNDERSTORM IS MOVING INTO YORK COUNTY OF SOUTHERN MAINE AT 100 PM... AT 100 PM NATIONAL WEATHER SERVICE RADAR IN PORTLAND SHOWED A THUNDERSTORM JUST MOVING INTO SOUTHERN YORK COUNTY. THIS STORM WILL PRODUCE HEAVY DOWNPOURS...STRONG GUSTY WINDS...FREQUENT LIGHTNING AND POSSIBLE HAIL AS IT MOVES ACROSS THE BERWICKS TO THE COAST FROM KENNEBUNKPORT TO KITTERY. THE STORM WILL CONTINUE MOVING...EAST AT ABOUT 30 MILES AN HOUR...ACROSS THE COASTAL WATERS. IF THREATENING WEATHER APPROACHES SEEK SHELTER. MOTORISTS... ESPECIALLY ALONG THE MAINE TURNPIKE...SHOULD BE PREPARED TO SLOW DOWN IF VISIBILITIES ARE QUICKLY REDUCED IN HEAVY RAIN. BOATERS SHOULD TAKE NECCESARY PRECAUTIONS FOR STRONG WINDS AND ABRUPT WIND SHIFTS. ADDITIONAL STATEMENTS WILL BE ISSUED AS NECESSARY. CAPRIOLA/WSFO PORTLAND
Special weather statement, Jul 20, 1:08 PM EDT, 38 minutes before
MEZALL-201900- SPECIAL WEATHER STATEMENT AND SPECIAL MARINE STATEMENT ... CORRECTED NATIONAL WEATHER SERVICE PORTLAND ME 105 PM EDT FRI JUL 20 1990 ...A STRONG THUNDERSTORM IS MOVING INTO YORK COUNTY OF SOUTHERN MAINE AT 100 PM... AT 100 PM NATIONAL WEATHER SERVICE RADAR IN PORTLAND SHOWED A THUNDERSTORM JUST MOVING INTO SOUTHERN YORK COUNTY. THIS STORM WILL PRODUCE HEAVY DOWNPOURS...STRONG GUSTY WINDS...FREQUENT LIGHTNING AND POSSIBLE HAIL AS IT MOVES ACROSS THE BERWICKS TO THE COAST FROM KENNEBUNKPORT TO KITTERY. THE STORM WILL CONTINUE MOVING...EAST AT ABOUT 30 MILES AN HOUR...ACROSS THE COASTAL WATERS BY 200 PM. IF THREATENING WEATHER APPROACHES SEEK SHELTER. MOTORISTS... ESPECIALLY ALONG THE MAINE TURNPIKE...SHOULD BE PREPARED TO SLOW DOWN IF VISIBILITIES ARE QUICKLY REDUCED IN HEAVY RAIN. BOATERS SHOULD TAKE NECCESARY PRECAUTIONS FOR STRONG WINDS AND ABRUPT WIND SHIFTS. ADDITIONAL STATEMENTS WILL BE ISSUED AS NECESSARY. CAPRIOLA/WSFO PORTLA
The office that day
Everything else NWS Gray, ME issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 20, 2:55 PM EDT | Severe Thunderstorm Warning | GYX | Cumberland | 65 min |
| Jul 20, 3:23 PM EDT | Tornado Warning | GYX | Cumberland, York | 52 min |
Nearby
Severe Thunderstorm Warnings in New Hampshire, 1990Every severe thunderstorm warning in 1990
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.