Alert archive / Oregon / Severe Thunderstorm Warnings in 1992

Severe Thunderstorm Warning 4, NWS Medford, OR

September 3, 1992Lake County, Oregon

NWS Medford, OR issued this severe thunderstorm warning at Sep 3, 1992, 5:27 PM PDT for Lake County, Oregon. It was in force for 48 min.

The area

The counties it named.

The facts

Issued
Sep 3, 1992, 5:27 PM PDT (00:27 UTC)
Expired
Sep 3, 1992, 6:15 PM PDT
In force
48 min
Issued by
NWS Medford, OR
Area
Whole counties

County Lake County, OR

The nearest sounding before it

Medford/Jackson, OR (KMFR), launched 00:00Z, 0.5 hours before the alert went out and 203 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, Medford/Jackson, OR at 00:00Z on 1992-09-04Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 509 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Medford/Jackson, OR at 00:00Z on 1992-09-04The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 47 square meters per square second.1939Sfc1 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
509 J/kg
Mixed-layer CIN
-16 J/kg
Mixed-layer LCL
1089 m above ground
0-6 km bulk shear
16 kt
0-1 km storm-relative helicity
47 m²/s²
0-3 km storm-relative helicity
72 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

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, Sep 3, 2:55 PM PDT, 2 hours 32 minutes before
ORZ003-005-009-013-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE MEDFORD OREGON
235 PM PDT THU SEP 3 1992

...THUNDERSTORMS CONTINUE OVER SOUTHERN OREGON THIS AFTERNOON...

AN UPPER LEVEL LOW PRESSURE SYSTEM OFF THE NORTHERN CALIFORNIA COAST
CONTINUES TO PRODUCE NUMEROUS THUNDERSTORMS THIS AFTERNOON.

AT 210 PM THIS AFTERNOON THE WEATHER SERVICE OFFICE AT MEDFORD RECEIVED
REPORTS FROM THE PARK SERVICE AT CRATER LAKE NATIONAL PARK THAT A
THUNDERSTORM HAD PRODUCED ONE-HALF INCH DIAMETER HAIL NEAR THE NORTH
PARK ENTRANCE. AT 220 PM A REPORT WAS RECEIVED FROM AN OBSERVER NEAR
CRESENT LAKE ALONG OREGON HIGHWAY 97 OF HEAVY RAIN AND FREQUENT LIGHTNING.

THE THUNDERSTORMS THROUGHOUT SOUTHERN OREGON THIS AFTERNOON ARE MOVING
TOWARDS THE WEST AT 5 TO 10 MPH. THUNDERSTORM ACTIVITY IS OCCURRING OVER T
THE COASTAL RANGES AND SOME ISOLATED THUNDERSTORMS ARE SHOWING UP OFF THE
COAST SO BOATERS SHOULD STAY ALERT.
IF THREATENING WEATHER APPROACHES YOUR AREA...TAKE SHELTER IN A BUILDING
OR CAR. AVOIDING LOW LYING AREAS...ALSO AVOID NATURAL LIGHTNING RODS SUCH
AS TALL TREES OR OTHER ISOLATED OBJECTS.

REMEMBER...THUNDERSTORMS MAY PRODUCE STRONG WINDS...SMALL HAIL...FREQUENT
LIGHTNING AN8D BRIEF HEAVY RAIN.

STAY ABREAST OF THE LATEST WEATHER INFORMATION BY MONITORING NOAA
WEATHER RADIO.

PRITCHETT
WSO MEDFORD
Special weather statement, Sep 3, 4:00 PM PDT, 1 hour 27 minutes before
ORZ003-005-009-013-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE MEDFORD OREGON
400 PM PDT THU SEP 3 1992

...THUNDERSTORMS WITH HAIL OVER SOUTHERN OREGON THIS AFTERNOON...

AN UPPER LEVEL LOW PRESSURE SYSTEM OFF THE NORTHERN CALIFORNIA COAST
CONTINUES TO PRODUCE NUMEROUS THUNDERSTORMS THIS AFTERNOON.

AT 349 PM THIS AFTERNOON THE WEATHER SERVICE OFFICE AT MEDFORD RECEIVED
A REPORT FROM A SPOTTER NEAR SAMS VALLEY THAT A THUNDERSTORM HAD
PRODUCED ONE-HALF INCH DIAMETER HAIL.  AT 344 PM A SPOTTER NEAR EAGLE
POINT REPORTED ONE-QUARTER INCH DIAMETER HAIL.

THE THUNDERSTORMS THROUGHOUT SOUTHERN OREGON THIS AFTERNOON ARE MOVING
TOWARDS THE SOUTHEAST AT 10 MPH. THUNDERSTORM ACTIVITY IS OCCURRING OVER
THE COASTAL RANGES AND SOME ISOLATED THUNDERSTORMS ARE SHOWING UP OFF THE
COAST SO BOATERS SHOULD STAY ALERT.
IF THREATENING WEATHER APPROACHES YOUR AREA...TAKE SHELTER IN A BUILDING

OR CAR. AVOIDING LOW LYING AREAS...ALSO AVOID NATURAL LIGHTNING RODS SUCH
AS TALL TREES OR OTHER ISOLATED OBJECTS.

REMEMBER...THUNDERSTORMS MAY PRODUCE STRONG WINDS...SMALL HAIL...FREQUENT
LIGHTNING AND BRIEF HEAVY RAIN.

STAY ABREAST OF THE LATEST WEATHER INFORMATION BY MONITORING NOAA
WEATHE:R RADIO.

KALENIAN
WSO MEDFORD

The office that day

Everything else NWS Medford, OR issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Sep 3, 5:18 PM PDTSevere Thunderstorm WarningMFRJackson57 min

Nearby

Severe Thunderstorm Warnings in Oregon, 1992Every severe thunderstorm warning in 1992

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.