Alert archive / Oregon / Special Weather Statements in 2017

Special Weather Statement, NWS Medford, OR

May 5, 2017

NWS Medford, OR issued this special weather statement at May 5, 2017, 12:13 AM PDT. It was in force for 32 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: May 5, 2017, 12:13 AM PDT (07:13 UTC)
Expired: May 5, 2017, 12:45 AM PDT
In force: 32 min
Issued by: NWS Medford, OR

The radar

The Medford radar (KMAX), 153 km from the middle of the area, began a volume at 07:14 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 00:00Z, 7.2 hours before the alert went out and 134 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-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

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: 803 J/kg
Mixed-layer CIN: -61 J/kg
Mixed-layer LCL: 2455 m above ground
0-6 km bulk shear: 48 kt
0-1 km storm-relative helicity: 28 m²/s²
0-3 km storm-relative helicity: 113 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 2.0

Open this sounding in Storm Lab

The text

As transmitted.

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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 May 4, 10:48 PM PDT, 1 hour 25 minutes earlier.

Area forecast discussion, May 4, 10:48 PM PDT, 1 hour 25 minutes before

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In the hours before

Local storm report, May 4, 9:40 PM PDT, 2 hours 33 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE MEDFORD OR
940 PM PDT THU MAY 4 2017

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

0800 PM     HAIL             UNION CREEK             42.91N 122.44W
05/04/2017  E1.75 INCH       JACKSON            OR   PUBLIC

            TIME ESTIMATED.

&&

CZS

Local storm report, May 4, 9:48 PM PDT, 2 hours 25 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE MEDFORD OR
948 PM PDT THU MAY 4 2017

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

0645 PM     HAIL             2 SE MEDFORD            42.32N 122.82W
05/04/2017  M0.25 INCH       JACKSON            OR   NWS EMPLOYEE

&&

CZS

Local storm report, May 4, 10:08 PM PDT, 2 hours 5 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE MEDFORD OR
1008 PM PDT THU MAY 4 2017

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

0720 PM     HAIL             5 E TRAIL               42.66N 122.71W
05/04/2017  E1.00 INCH       JACKSON            OR   PUBLIC

            REPORT FROM SOCIAL MEDIA. TIME ESTIMATED
            BASED ON RADAR.

&&

CZS

Special weather statement, May 4, 10:18 PM PDT, 1 hour 55 minutes before

Special Weather Statement
National Weather Service Medford OR
1018 PM PDT THU MAY 4 2017

ORZ027>029-050545-
Siskiyou Mountains and Southern Oregon Cascades-South Central Oregon
Cascades-Klamath Basin-
1018 PM PDT THU MAY 4 2017

...AN AREA OF STRONG THUNDERSTORMS WILL AFFECT EAST CENTRAL JACKSON
AND WEST CENTRAL KLAMATH COUNTIES...

At 1017 PM PDT, strong thunderstorms were clustered near Fourmile
Lake Campground, or 27 miles south of Crater Lake, moving north at 50
mph.

Winds in excess of 30 mph and pea size hail are possible with this
storm.

Locations impacted include...
Crater Lake, Crater Lake National Park, Fourmile Lake Campground,
Annie Creek Snow Park, Crater Lake Lodge and Highway 62 Near Crater
Lake.

* This includes...
   Highway 62 in Oregon between mile markers 67 and 87.

Torrential rainfall is also occurring with this storm, and may cause
localized flooding. Do not drive your vehicle through flooded
roadways.

LAT...LON 4241 12223 4248 12245 4298 12224 4288 12190
TIME...MOT...LOC 0517Z 202DEG 42KT 4252 12231

DW

Local storm report, May 4, 10:26 PM PDT, 1 hour 47 minutes before

PRELIMINARY LOCAL STORM REPORT...CORRECTED
NATIONAL WEATHER SERVICE MEDFORD OR
1026 PM PDT THU MAY 4 2017

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

0617 PM     HAIL             2 S GREENVIEW           41.52N 122.91W
05/04/2017  M1.00 INCH       SISKIYOU           CA   TRAINED SPOTTER

            SPOTTER REPORTED HAIL ABOUT THE SIZE OF
            NICKELS.

&&

CZS

Special weather statement, May 5, 12:13 AM PDT, 0 minutes before

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The office that day

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

Issued	Product	Office	Counties	Lasted
May 4, 5:51 PM PDT	Special Weather Statement	MFR	Jackson	24 min
May 4, 6:04 PM PDT	Special Weather Statement	MFR	Jackson	26 min
May 4, 6:15 PM PDT	Severe Thunderstorm Warning	MFR	Douglas, Jackson	45 min
May 4, 6:25 PM PDT	Special Weather Statement	MFR	Jackson	35 min
May 4, 6:44 PM PDT	Special Weather Statement	MFR	Jackson	46 min
May 4, 6:51 PM PDT	Severe Thunderstorm Warning	MFR	Douglas, Jackson	24 min
May 4, 7:17 PM PDT	Special Weather Statement	MFR	Jackson	28 min
May 4, 7:23 PM PDT	Special Weather Statement	MFR		22 min
May 4, 7:23 PM PDT	Severe Thunderstorm Warning	MFR	Jackson	37 min
May 4, 7:31 PM PDT	Tornado Warning	MFR	Jackson, Klamath	14 min
May 4, 7:40 PM PDT	Tornado Warning	MFR	Jackson, Klamath	15 min
May 4, 7:54 PM PDT	Severe Thunderstorm Warning	MFR	Douglas, Jackson, Klamath	36 min
May 4, 8:13 PM PDT	Severe Thunderstorm Warning	MFR	Douglas, Klamath	17 min
May 4, 8:38 PM PDT	Special Weather Statement	MFR		22 min
May 4, 9:17 PM PDT	Special Weather Statement	MFR	Jackson	28 min
May 4, 9:33 PM PDT	Severe Thunderstorm Warning	MFR	Jackson, Klamath	27 min
May 4, 10:18 PM PDT	Special Weather Statement	MFR	Klamath	27 min
May 4, 10:36 PM PDT	Severe Thunderstorm Warning	MFR	Jackson, Klamath	24 min
May 5, 2:37 PM PDT	Hazardous Seas Warning	MFR		68 hr
May 4, 6:09 PM PDT	Special Weather Statement	MFR	Siskiyou	36 min
May 4, 6:27 PM PDT	Special Weather Statement	MFR	Siskiyou	33 min
May 4, 7:09 PM PDT	Special Weather Statement	MFR	Siskiyou	36 min
May 4, 7:13 PM PDT	Severe Thunderstorm Warning	MFR	Siskiyou	21 min
May 4, 8:09 PM PDT	Severe Thunderstorm Warning	MFR	Siskiyou	20 min
May 4, 8:37 PM PDT	Special Weather Statement	MFR	Siskiyou	23 min
May 4, 8:47 PM PDT	Severe Thunderstorm Warning	MFR	Siskiyou	28 min
May 4, 9:20 PM PDT	Special Weather Statement	MFR	Siskiyou	25 min

Nearby

Special Weather Statements in Oregon, 2017 Every special weather statement in 2017

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.