Alert archive / Oregon / Special Weather Statements in 2012

Special Weather Statement, NWS Pendleton, OR

July 8, 2012Deschutes County, Oregon

NWS Pendleton, OR issued this special weather statement at Jul 8, 2012, 3:39 PM PDT for Deschutes County, Oregon. It was in force for 66 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
Jul 8, 2012, 3:39 PM PDT (22:39 UTC)
Expired
Jul 8, 2012, 4:45 PM PDT
In force
66 min
Issued by
NWS Pendleton, OR

County Deschutes County, OR

The radar

The Medford radar (KMAX), 228 km from the middle of the area, began a volume at 22:40 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

Salem/Mcnary, OR (KSLE), launched 12:00Z, 10.7 hours before the alert went out and 166 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, Salem/Mcnary, OR at 12:00Z on 2012-07-08Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 0 joules per kilogram.LCL10008507005003002001001 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, Salem/Mcnary, OR at 12:00Z on 2012-07-08The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -51 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
0 J/kg
Mixed-layer CIN
No buoyant parcel
Mixed-layer LCL
1050 m above ground
0-6 km bulk shear
31 kt
0-1 km storm-relative helicity
-51 m²/s²
0-3 km storm-relative helicity
54 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

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 Pendleton, OR wrote its last area forecast discussion before this special weather statement went out at Jul 8, 3:27 PM PDT, 12 minutes earlier.

Area forecast discussion, Jul 8, 3:27 PM PDT, 12 minutes before
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Hazardous weather outlook, Jul 8, 9:20 AM PDT, 6 hours 19 minutes before
HAZARDOUS WEATHER OUTLOOK...UPDATED
NATIONAL WEATHER SERVICE PENDLETON OR
920 AM PDT SUN JUL 8 2012

UPDATED TO ADD MENTION OF THE HEAT ADVISORY

ORZ041-042-044-049-050-502-503-505>509-WAZ024-026>030-520-521-
091115-
EASTERN COLUMBIA RIVER GORGE OF OREGON-NORTH CENTRAL OREGON-
LOWER COLUMBIA BASIN OF OREGON-GRANDE RONDE VALLEY-WALLOWA COUNTY-
NORTHERN BLUE MOUNTAINS OF OREGON-
SOUTHERN BLUE MOUNTAINS OF OREGON-JOHN DAY BASIN-OCHOCO-
JOHN DAY HIGHLANDS-
FOOTHILLS OF THE NORTHERN BLUE MOUNTAINS OF OREGON-
FOOTHILLS OF THE SOUTHERN BLUE MOUNTAINS OF OREGON-
EAST SLOPES OF THE OREGON CASCADES-
EASTERN COLUMBIA RIVER GORGE OF WASHINGTON-KITTITAS VALLEY-
YAKIMA VALLEY-LOWER COLUMBIA BASIN OF WASHINGTON-
FOOTHILLS OF THE BLUE MOUNTAINS OF WASHINGTON-
NORTHWEST BLUE MOUNTAINS OF WASHINGTON-
EAST SLOPES OF THE WASHINGTON CASCADES-SIMCOE HIGHLANDS-
920 AM PDT SUN JUL 8 2012

THIS HAZARDOUS WEATHER OUTLOOK IS FOR CENTRAL AND NORTHEAST OREGON
AS WELL AS SOUTH CENTRAL AND SOUTHEAST WASHINGTON.

.DAY ONE...TODAY AND TONIGHT

RED FLAG WARNING AND THUNDERSTORMS AREAWIDE

HOT AND DRY CONDITIONS AT THE SURFACE WITH UNSTABLE AIR AND SOME
MOISTURE IN THE MID LEVELS WILL LEAD TO ISOLATED TO SCATTERED
AFTERNOON AND EVENING THUNDERSTORMS IN ALL OF THE FORECAST AREA
TODAY AND TONIGHT. SOME THUNDERSTORMS MAY BECOME SEVERE BUT MOST
STORMS WILL NOT BE SEVERE. THE MAIN THREAT OF THUNDERSTORMS WILL BE
ABUNDANT LIGHTNING WITH POSSIBLY LITTLE RAINFALL...ESPECIALLY ON THE
EDGES OF THE THUNDERSTORM CELLS. THIS WILL CREATE A DANGEROUS FIRE
THREAT DUE TO THE HOT AND DRY SURFACE CONDITIONS WITH DRY
VEGETATION. AS A RESULT A RED FLAG WARNING WILL BECOME IN EFFECT
THIS AFTERNOON FOR ALL AREAS OF THE FIRE WEATHER DISTRICT. PLEASE
REFER TO NWS HAZARD PRODUCT ID PDXRFWPDT FOR MORE DETAILS.

UPDATE...HOT TEMPERATURES CONTINUE TODAY...WITH DAYTIME HIGHS
EXPECTED TO EXCEED 100 DEGREES IN SEVERAL AREAS. WITH HOT DAYTIME
TEMPERATURES AND WARM NIGHT TIME TEMPERATURES THERE WILL BE LITTLE
TO NO RELIEF FROM THE HEAT.  THEREFORE A HEAT ADVISORY IS IN EFFECT
FOR THE LOWER ELEVATIONS...WITH EXCEPTION OF THE COLUMBIA RIVER
GORGE AND THE SOUTHERN OREGON FOOTHILLS.  PLEASE REFER TO PRODUCT
PDXNPWPDT FOR FURTHER DETAILS.

.DAYS TWO THROUGH SEVEN...MONDAY THROUGH SATURDAY

RED FLAG WARNING AND THUNDERSTORMS AREAWIDE MONDAY AND TUESDAY

THUNDERSTORMS ARE EXPECTED AGAIN ON MONDAY AND TUESDAY MAINLY DURING
THE AFTERNOONS AND EVENINGS. THUNDERSTORMS MAY CONTAIN ABUNDANT
LIGHTNING WHICH MAY CAUSE ADDITIONAL FIRE STARTS DUE TO HOT AND DRY
CONDITIONS WITH DRY VEGETATION AT THE SURFACE. A RED FLAG WARNING
WILL REMAIN IN EFFECT THROUGH TUESDAY EVENING. PLEASE REFER TO NWS
HAZARD PRODUCT ID PDXRFWPDT FOR MORE DETAILS. ALSO, SOME
THUNDERSTORMS MAY BECOME SEVERE BUT MOST STORMS WILL NOT BE SEVERE.
THERE WILL BE SOME IMPROVEMENT BEGINNING LATE TUESDAY OR TUESDAY
NIGHT WITH SLIGHTLY COOLER CONDITIONS AND A MORE STABLE ATMOSPHERE.
HOWEVER ISOLATED AFTERNOON AND EVENING THUNDERSTORMS WILL STILL BE
POSSIBLE EACH DAY OVER MAINLY THE EASTERN AND SOUTHERN HIGHER
ELEVATIONS THROUGH THE REST OF THE WEEK.

.SPOTTER INFORMATION STATEMENT...

SPOTTER ACTIVATION MAY BE REQUIRED.

WEATHER SPOTTERS ARE ENCOURAGED TO REPORT SIGNIFICANT WEATHER
CONDITIONS ACCORDING TO STANDARD OPERATING PROCEDURES.

GRAPHICAL FORECASTS OF WEATHER HAZARDS OUT TO SEVEN DAYS
ARE DISPLAYED ON THE WORLD WIDE WEB AT:

WWW.WRH.NOAA.GOV/PDT/CURRENTHAZARDS/HWO.HTML

ALL LETTERS IN THE ABOVE URL ARE LOWER CASE.

In the hours before

Special weather statement, Jul 8, 3:39 PM PDT, 0 minutes before
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE PENDLETON OR
339 PM PDT SUN JUL 8 2012

ORZ506-509-082345-
EAST SLOPES OF THE OREGON CASCADES OR-OCHOCO-JOHN DAY HIGHLANDS OR-
339 PM PDT SUN JUL 8 2012

...SIGNIFICANT WEATHER ADVISORY FOR CENTRAL DESCHUTES COUNTY UNTIL
445 PM PDT...

AT 336 PM PDT...NATIONAL WEATHER SERVICE DOPPLER RADAR WAS TRACKING A
STRONG THUNDERSTORM 5 MILES SOUTHEAST OF LA PINE...OR 31 MILES SOUTH
OF BEND...MOVING NORTH AT 20 MPH.

HAIL UP TO THE SIZE OF PENNIES AND WIND GUSTS UP TO 50 MPH ARE
EXPECTED WITH THIS STORM...ALONG WITH HEAVY RAIN.

IF THREATENING WEATHER APPROACHES YOUR AREA...TAKE SHELTER IN A
STURDY BUILDING.

LAT...LON 4411 12176 4411 12103 4362 12115 4362 12162
TIME...MOT...LOC 2239Z 180DEG 16KT 4364 12143

The office that day

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

IssuedProductOfficeCountiesLasted
Jul 7, 5:12 PM PDTSpecial Weather StatementPDTWallowa63 min
Jul 8, 3:55 PM PDTSevere Thunderstorm WarningPDTWheeler65 min
Jul 8, 4:46 PM PDTSpecial Weather StatementPDTCrook59 min
Jul 8, 4:51 PM PDTSpecial Weather StatementPDTDeschutes54 min
Jul 7, 6:30 PM PDTSpecial Weather StatementPDTColumbia60 min
Jul 7, 6:38 PM PDTAreal Flood WarningPDTColumbia95 min
Jul 7, 6:39 PM PDTSevere Thunderstorm WarningPDTColumbia53 min

Nearby

Special Weather Statements in Oregon, 2012Every special weather statement in 2012

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.