Alert archive / Oregon / Special Weather Statements in 2009

Special Weather Statement, NWS Medford, OR

August 3, 2009Lake County, Oregon

NWS Medford, OR issued this special weather statement at Aug 3, 2009, 4:02 PM PDT for Lake County, Oregon. It was in force for 43 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
Aug 3, 2009, 4:02 PM PDT (23:02 UTC)
Expired
Aug 3, 2009, 4:45 PM PDT
In force
43 min
Issued by
NWS Medford, OR

County Lake County, OR

The radar

The Medford radar (KMAX), 226 km from the middle of the area, began a volume at 23:03 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.

The nearest sounding before it

Medford/Jackson, OR (KMFR), launched 12:00Z, 11.0 hours before the alert went out and 230 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 12:00Z on 2009-08-03Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 658 joules per kilogram.LCLLFCEL10008507005003002001001 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, Medford/Jackson, OR at 12:00Z on 2009-08-03The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 6 square meters per square second.193958Sfc1 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
658 J/kg
Mixed-layer CIN
-316 J/kg
Mixed-layer LCL
1010 m above ground
0-6 km bulk shear
22 kt
0-1 km storm-relative helicity
6 m²/s²
0-3 km storm-relative helicity
13 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.1

Open this sounding in Storm Lab

The text

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

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What forecasters said that day

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

NWS Medford, OR wrote its last area forecast discussion before this special weather statement went out at Aug 3, 2:00 PM PDT, 2 hours 2 minutes earlier.

Area forecast discussion, Aug 3, 2:00 PM PDT, 2 hours 2 minutes before
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Hazardous weather outlook, Aug 3, 2:27 PM PDT, 1 hour 35 minutes before
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In the hours before

Local storm report, Aug 3, 11:13 AM PDT, 4 hours 49 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE MEDFORD OR
1113 AM PDT MON AUG 03 2009

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

&&

SPENCER
Local storm report, Aug 3, 11:14 AM PDT, 4 hours 48 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE MEDFORD OR
1114 AM PDT MON AUG 03 2009

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0430 PM     HAIL             VALLEY FALLS            42.34N 120.28W
08/02/2009  E0.50 INCH       LAKE               OR   PUBLIC

            1/2 INCH HAIL, HEAVY RAIN, AND HIGH WINDS. NO ESTIMATION
            ON RAIN OR WIND. JACKIE AT VALLEY FALLS STORE.

0630 PM     HAIL             CRATER LAKE             42.90N 122.13W
08/02/2009  E1.00 INCH       KLAMATH            OR   CO-OP OBSERVER

            QUARTER SIZE HAIL WITH HEAVY RAIN CAUSING MUD AND ROCK
            SLIDES ACROSS THE WEST RIM ROAD AND THE EAST RIM ROAD.
            EAST RIM ROAD HAD 12 CUBIC YARDS OF MATERIAL REMOVED TO
            RE-OPEN THE ROAD.

0800 PM     TSTM WND DMG     22 NNE SUMMER LAKE      43.25N 120.57W
08/02/2009                   LAKE               OR   TRAINED SPOTTER

            8 INCH TREES BLOWN DOWN. WIND DAMAGE TO A BARN. 4 TENTHS
            OF AN INCH OF RAIN. NO HAIL.

0900 PM     TSTM WND DMG     5 E FORT ROCK           43.37N 120.95W
08/02/2009                   LAKE               OR   TRAINED SPOTTER

            100X50 FT BARN BLOWN DOWN, BENDING TREES AND STREET
            SIGNS. HEAVY RAIN...ABOUT 2 INCHES IN AN HOUR.

0900 PM     TSTM WND DMG     10 N FORT ROCK          43.50N 121.05W
08/02/2009                   LAKE               OR   PUBLIC

            180X60FT HAY BARN 20 FT AT THE EAVES WAS FLATTENED. HAY
            IN FIELDS WAS FLATTENED BY THE HEAVY RAIN AND WIND.

&&

SPENCER
Local storm report, Aug 3, 1:05 PM PDT, 2 hours 57 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE MEDFORD OR
105 PM PDT MON AUG 03 2009

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0712 PM     HAIL             2 W WHITE CITY          42.43N 122.87W
08/01/2009  E1.00 INCH       JACKSON            OR   NWS EMPLOYEE

&&

SPENCER
Local storm report, Aug 3, 1:20 PM PDT, 2 hours 42 minutes before
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Local storm report, Aug 3, 3:23 PM PDT, 39 minutes before
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Special weather statement, Aug 3, 4:02 PM PDT, 0 minutes before
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The office that day

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

IssuedProductOfficeCountiesLasted
Aug 2, 5:14 PM PDTSpecial Weather StatementMFRKlamath46 min
Aug 2, 5:22 PM PDTSpecial Weather StatementMFRKlamath38 min
Aug 2, 5:56 PM PDTSevere Thunderstorm WarningMFRKlamath34 min
Aug 2, 6:54 PM PDTSevere Thunderstorm WarningMFRLake36 min
Aug 2, 7:33 PM PDTSevere Thunderstorm WarningMFRJackson, Klamath31 min
Aug 2, 11:13 PM PDTFire Weather WatchMFRHarney, Klamath, Lake14 hr
Aug 3, 1:07 PM PDTRed Flag WarningMFRHarney, Klamath, Lake10 hr

Nearby

Special Weather Statements in Oregon, 2009Every special weather statement in 2009

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.