Alert archive / Oregon / Wind Advisories in 2011
Wind Advisory 39, NWS Pendleton, OR
NWS Pendleton, OR issued this wind advisory at Dec 17, 2011, 11:30 PM PST for Union County, Oregon. It was in force for 7 hr.
The area
The counties it named.
The facts
- Issued
- Dec 17, 2011, 11:30 PM PST (07:30 UTC)
- Expired
- Dec 18, 2011, 6:21 AM PST
- In force
- 7 hr
- Issued by
- NWS Pendleton, OR
County Union County, OR
The radar
The Pendleton radar (KPDT), 78 km from the middle of the area, began a volume at 07:33 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
Boise Airport, ID (KBOI), launched 00:00Z, 7.5 hours before the alert went out and 241 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
- 1403 m above ground
- 0-6 km bulk shear
- 10 kt
- 0-1 km storm-relative helicity
- -32 m²/s²
- 0-3 km storm-relative helicity
- -10 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
129 WWUS76 KPDT 180730 NPWPDT URGENT - WEATHER MESSAGE NATIONAL WEATHER SERVICE PENDLETON OR 1130 PM PST SAT DEC 17 2011 .HIGH PRESSURE WITH LIGHT WINDS WILL CONTINUE TO PRODUCE STAGNANT AIR CONDITIONS THROUGH THE WEEKEND AND INTO NEXT WEEK. AREAS OF DENSE FREEZING FOG ARE ALSO POSSIBLE AT TIMES. TIGHT SURFACE PRESSURE GRADIENTS BETWEEN THE BAKER AND GRANDE RONDE VALLEYS WILL CAUSE STRONG WINDS THERE OVERNIGHT AND EARLY SUNDAY MORNING. ORZ049-181500- /O.NEW.KPDT.WI.Y.0039.111218T0730Z-111218T1500Z/ GRANDE RONDE VALLEY- INCLUDING THE CITIES OF...COVE...ELGIN...LA GRANDE 1130 PM PST SAT DEC 17 2011 ...WIND ADVISORY IN EFFECT UNTIL 7 AM PST SUNDAY FOR THE SOUTHERN GRANDE RONDE VALLEY... THE NATIONAL WEATHER SERVICE IN PENDLETON HAS ISSUED A WIND ADVISORY...WHICH IS IN EFFECT UNTIL 7 AM PST SUNDAY FOR THE SOUTHERN GRANDE RONDE VALLEY. * TIMING: THE STRONGEST WINDS WILL OCCUR BETWEEN NOW AND 5 AM AND THEN WILL DIMINISH RAPIDLY AFTER 5 AM. * WINDS: WIND SPEEDS OF 30 TO 40 MPH WITH GUSTS TO 55 MPH CAN BE EXPECTED. THE STRONGEST WINDS WILL BE NEAR THE BASE OF LADD AND PYLES CANYONS. * IMPACTS: STRONG WINDS WILL CAUSE DIFFICULT DRIVING CONDITIONS. THIS IS ESPECIALLY TRUE FOR HIGH PROFILE VEHICLES. AREAS THAT WILL BE MOST IMPACTED WILL BE INTERSTATE 84 OVER LADD CANYON AND HIGHWAY 237 OVER PYLES CANYON. PRECAUTIONARY/PREPAREDNESS ACTIONS... A WIND ADVISORY IS ISSUED WHEN SUSTAINED WINDS ARE FORECAST BETWEEN 30 AND 39 MPH OR GUSTS RANGING FROM 45 TO 57 MPH. WINDS OF THESE MAGNITUDES CAN MAKE DRIVING DIFFICULT...ESPECIALLY FOR HIGH PROFILE VEHICLES. MINOR PROPERTY DAMAGE MAY ALSO OCCUR. FOR ADDITIONAL WEATHER INFORMATION...CHECK OUR WEB SITE AT WWW.WEATHER.GOV/PENDLETON. && $$ ORZ507-WAZ026-029-181500- /O.CON.KPDT.AS.Y.0003.000000T0000Z-111220T2000Z/ /O.CON.KPDT.ZF.Y.0004.000000T0000Z-111218T1900Z/ FOOTHILLS OF THE NORTHERN BLUE MOUNTAINS OF OREGON- KITTITAS VALLEY-FOOTHILLS OF THE BLUE MOUNTAINS OF WASHINGTON- INCLUDING THE CITIES OF...PENDLETON...PILOT ROCK...ELLENSBURG... THORP...DAYTON...WAITSBURG...WALLA WALLA 1130 PM PST SAT DEC 17 2011 ...AIR STAGNATION ADVISORY REMAINS IN EFFECT UNTIL NOON PST TUESDAY... ...FREEZING FOG ADVISORY REMAINS IN EFFECT UNTIL 11 AM PST SUNDAY... AN AIR STAGNATION ADVISORY REMAINS IN EFFECT UNTIL NOON PST TUESDAY. A FREEZING FOG ADVISORY REMAINS IN EFFECT UNTIL 11 AM PST SUNDAY. * TIMING: STAGNANT AIR WILL REMAIN IN PLACE THROUGH AT LEAST TUESDAY. A WEAK WEATHER SYSTEM MOVING THROUGH SUNDAY COULD RESULT IN SOME MINOR IMPROVEMENT LATER IN THE DAY. HOWEVER THIS SYSTEM WILL NOT PROVIDE ANY SIGNIFICANT LONG TERM IMPROVEMENT IN CONDITIONS. LOW LEVEL INVERSIONS AND LIGHT SURFACE WINDS WILL CONTINUE TO RESULT IN LITTLE MIXING OF THE AIR MASS. * VISIBILITY: VISIBILITIES OF ONE QUARTER MILE OR LESS CAN BE EXPECTED IN AREAS THROUGH SUNDAY MORNING. * IMPACTS: AIR QUALITY WILL CONTINUE TO BE POOR DUE TO PARTICULATE MATTER TRAPPED NEAR THE SURFACE. PERSONS SENSITIVE TO POOR AIR CONDITIONS SHOULD TAKE PRECAUTIONS. FOG DROPLETS MAY COLLECT AND FREEZE ON ROAD SURFACES MAKING THEM SLICK. MOTORISTS SHOULD BE PREPARED FOR SUDDEN CHANGES IN VISIBILITY AND ROAD CONDITIONS. PRECAUTIONARY/PREPAREDNESS ACTIONS... AN AIR STAGNATION ADVISORY INDICATES THAT DUE TO LIMITED MOVEMENT OF AN AIR MASS ACROSS THE ADVISORY AREA...POLLUTION WILL INCREASE. CHECK WITH YOUR LOCAL AIR QUALITY AGENCY FOR POSSIBLE RESTRICTIONS IN YOUR AREA. FOR ADDITIONAL WEATHER INFORMATION... CHECK OUR WEBSITE AT WWW.WEATHER.GOV/PENDLETON. A FREEZING FOG ADVISORY MEANS VISIBILITIES WILL FREQUENTLY BE REDUCED TO LESS THAN ONE QUARTER MILE. IF DRIVING...SLOW DOWN... USE YOUR HEADLIGHTS...AND LEAVE PLENTY OF DISTANCE AHEAD OF YOU. ALSO...BE ALERT FOR FROST ON BRIDGE DECKS CAUSING SLIPPERY ROADS. && $$ ORZ041-042-044-050-505-508-WAZ024-027-028-521-181500- /O.CON.KPDT.AS.Y.0003.000000T0000Z-111220T2000Z/ EASTERN COLUMBIA RIVER GORGE OF OREGON-NORTH CENTRAL OREGON- LOWER COLUMBIA BASIN OF OREGON-WALLOWA COUNTY-JOHN DAY BASIN- FOOTHILLS OF THE SOUTHERN BLUE MOUNTAINS OF OREGON- EASTERN COLUMBIA RIVER GORGE OF WASHINGTON-YAKIMA VALLEY- LOWER COLUMBIA BASIN OF WASHINGTON-SIMCOE HIGHLANDS- INCLUDING THE CITIES OF...ARLINGTON...THE DALLES...DUFUR... MADRAS...MAUPIN...MORO...PRINEVILLE...REDMOND...BOARDMAN... HERMISTON...IONE...ENTERPRISE...JOSEPH...WALLOWA...DAYVILLE... JOHN DAY...MITCHELL...MONUMENT...SPRAY...HEPPNER...CONDON... FOSSIL...WHITE SALMON...NACHES...SUNNYSIDE...TOPPENISH...YAKIMA... CONNELL...PROSSER...TRI-CITIES...BICKLETON...GOLDENDALE 1130 PM PST SAT DEC 17 2011 ...AIR STAGNATION ADVISORY REMAINS IN EFFECT UNTIL NOON PST TUESDAY... AN AIR STAGNATION ADVISORY REMAINS IN EFFECT UNTIL NOON PST TUESDAY. * TIMING: STAGNANT AIR WILL REMAIN IN PLACE THROUGH AT LEAST TUESDAY. A WEAK WEATHER SYSTEM MOVING THROUGH SUNDAY COULD RESULT IN SOME MINOR IMPROVEMENT LATER IN THE DAY. HOWEVER THIS SYSTEM WILL NOT PROVIDE ANY SIGNIFICANT LONG TERM IMPROVEMENT IN CONDITIONS. LOW LEVEL INVERSIONS AND LIGHT SURFACE WINDS WILL CONTINUE TO RESULT IN LITTLE MIXING OF THE AIR MASS. * IMPACTS: AIR QUALITY WILL CONTINUE TO BE POOR DUE TO PARTICULATE MATTER TRAPPED NEAR THE SURFACE. PERSONS SENSITIVE TO POOR AIR CONDITIONS SHOULD TAKE PRECAUTIONS. PRECAUTIONARY/PREPAREDNESS ACTIONS... AN AIR STAGNATION ADVISORY INDICATES THAT DUE TO LIMITED MOVEMENT OF AN AIR MASS ACROSS THE ADVISORY AREA...POLLUTION WILL INCREASE. CHECK WITH YOUR LOCAL AIR QUALITY AGENCY FOR POSSIBLE RESTRICTIONS IN YOUR AREA. FOR ADDITIONAL WEATHER INFORMATION... CHECK OUR WEBSITE AT WWW.WEATHER.GOV/PENDLETON. && $$
1 follow-up statement
385 WWUS76 KPDT 181421 NPWPDT URGENT - WEATHER MESSAGE NATIONAL WEATHER SERVICE PENDLETON OR 621 AM PST SUN DEC 18 2011 .HIGH PRESSURE ALOFT WITH LIGHT WINDS WILL CONTINUE TO PRODUCE STAGNANT AIR CONDITIONS THROUGH THE WEEKEND AND INTO NEXT WEEK OVER THE LOWER COLUMBIA BASIN AND SURROUNDING VALLEYS. ALSO INCLUDED IS THE EASTERN COLUMBIA RIVER GORGE...THE JOHN DAY BASIN AND WALLOWA COUNTY. ORZ507-WAZ026-029-182300- /O.CAN.KPDT.ZF.Y.0004.000000T0000Z-111218T1900Z/ /O.CON.KPDT.AS.Y.0003.000000T0000Z-111220T2000Z/ FOOTHILLS OF THE NORTHERN BLUE MOUNTAINS OF OREGON- KITTITAS VALLEY-FOOTHILLS OF THE BLUE MOUNTAINS OF WASHINGTON- INCLUDING THE CITIES OF...PENDLETON...PILOT ROCK...ELLENSBURG... THORP...DAYTON...WAITSBURG...WALLA WALLA 621 AM PST SUN DEC 18 2011 ...AIR STAGNATION ADVISORY REMAINS IN EFFECT UNTIL NOON PST TUESDAY... ...FREEZING FOG ADVISORY IS CANCELLED... THE NATIONAL WEATHER SERVICE IN PENDLETON HAS CANCELLED THE FREEZING FOG ADVISORY. AN AIR STAGNATION ADVISORY REMAINS IN EFFECT UNTIL NOON PST TUESDAY. * TIMING: STAGNANT AIR WILL REMAIN IN PLACE THROUGH AT LEAST TUESDAY. A WEAK WEATHER SYSTEM MOVING THROUGH TODAY COULD RESULT IN SOME MINOR IMPROVEMENT LATER IN THE DAY. HOWEVER THIS SYSTEM WILL NOT PROVIDE ANY SIGNIFICANT LONG TERM IMPROVEMENT IN CONDITIONS. LOW LEVEL INVERSIONS AND LIGHT SURFACE WINDS WILL CONTINUE TO RESULT IN LITTLE MIXING OF THE AIR MASS. * VISIBILITY: VISIBILITIES HAVE IMPROVED TO GREATER THAN 3 MILES IN MOST LOCATIONS DUE TO THE EFFECTS OF A WEATHER DISTURBANCE THAT IS MOVING INTO THE REGION AND CAUSING BETTER MIXING. AS A RESULT THE FREEZING FOG ADVISORY HAS BEEN CANCELLED. * IMPACTS: AIR QUALITY WILL CONTINUE TO BE POOR DUE TO PARTICULATE MATTER TRAPPED NEAR THE SURFACE. PERSONS SENSITIVE TO POOR AIR CONDITIONS SHOULD TAKE PRECAUTIONS. FOG DROPLETS MAY COLLECT AND FREEZE ON ROAD SURFACES MAKING THEM SLICK. MOTORISTS SHOULD BE PREPARED FOR SUDDEN CHANGES IN VISIBILITY AND ROAD CONDITIONS. PRECAUTIONARY/PREPAREDNESS ACTIONS... AN AIR STAGNATION ADVISORY INDICATES THAT DUE TO LIMITED MOVEMENT OF AN AIR MASS ACROSS THE ADVISORY AREA...POLLUTION WILL INCREASE. CHECK WITH YOUR LOCAL AIR QUALITY AGENCY FOR POSSIBLE RESTRICTIONS IN YOUR AREA. FOR ADDITIONAL WEATHER INFORMATION... CHECK OUR WEBSITE AT WWW.WEATHER.GOV/PENDLETON. && $$ ORZ049-181530- /O.CAN.KPDT.WI.Y.0039.000000T0000Z-111218T1500Z/ GRANDE RONDE VALLEY- INCLUDING THE CITIES OF...COVE...ELGIN...LA GRANDE 621 AM PST SUN DEC 18 2011 ...WIND ADVISORY IS CANCELLED... THE NATIONAL WEATHER SERVICE IN PENDLETON HAS CANCELLED THE WIND ADVISORY. PRESSURE GRADIENTS BETWEEN THE BAKER AND GRANDE RONDE VALLEYS HAVE WEAKENED AND THE STRONG WINDS THAT HAVE OCCURRED OVERNIGHT ARE NOW RAPIDLY DIMINISHING. AS A RESULT THE WIND ADVISORY HAS BEEN CANCELLED. $$ ORZ041-042-044-050-505-508-WAZ024-027-028-521-182300- /O.CON.KPDT.AS.Y.0003.000000T0000Z-111220T2000Z/ EASTERN COLUMBIA RIVER GORGE OF OREGON-NORTH CENTRAL OREGON- LOWER COLUMBIA BASIN OF OREGON-WALLOWA COUNTY-JOHN DAY BASIN- FOOTHILLS OF THE SOUTHERN BLUE MOUNTAINS OF OREGON- EASTERN COLUMBIA RIVER GORGE OF WASHINGTON-YAKIMA VALLEY- LOWER COLUMBIA BASIN OF WASHINGTON-SIMCOE HIGHLANDS- INCLUDING THE CITIES OF...ARLINGTON...THE DALLES...DUFUR... MADRAS...MAUPIN...MORO...PRINEVILLE...REDMOND...BOARDMAN... HERMISTON...IONE...ENTERPRISE...JOSEPH...WALLOWA...DAYVILLE... JOHN DAY...MITCHELL...MONUMENT...SPRAY...HEPPNER...CONDON... FOSSIL...WHITE SALMON...NACHES...SUNNYSIDE...TOPPENISH...YAKIMA... CONNELL...PROSSER...TRI-CITIES...BICKLETON...GOLDENDALE 621 AM PST SUN DEC 18 2011 ...AIR STAGNATION ADVISORY REMAINS IN EFFECT UNTIL NOON PST TUESDAY... AN AIR STAGNATION ADVISORY REMAINS IN EFFECT UNTIL NOON PST TUESDAY. * TIMING: STAGNANT AIR WILL REMAIN IN PLACE THROUGH AT LEAST TUESDAY. A WEAK WEATHER SYSTEM MOVING THROUGH TODAY COULD RESULT IN SOME MINOR IMPROVEMENT LATER IN THE DAY. HOWEVER THIS SYSTEM WILL NOT PROVIDE ANY SIGNIFICANT LONG TERM IMPROVEMENT IN CONDITIONS. LOW LEVEL INVERSIONS AND LIGHT SURFACE WINDS WILL CONTINUE TO RESULT IN LITTLE MIXING OF THE AIR MASS. * IMPACTS: AIR QUALITY WILL CONTINUE TO BE POOR DUE TO PARTICULATE MATTER TRAPPED NEAR THE SURFACE. PERSONS SENSITIVE TO POOR AIR CONDITIONS SHOULD TAKE PRECAUTIONS. PRECAUTIONARY/PREPAREDNESS ACTIONS... AN AIR STAGNATION ADVISORY INDICATES THAT DUE TO LIMITED MOVEMENT OF AN AIR MASS ACROSS THE ADVISORY AREA...POLLUTION WILL INCREASE. CHECK WITH YOUR LOCAL AIR QUALITY AGENCY FOR POSSIBLE RESTRICTIONS IN YOUR AREA. FOR ADDITIONAL WEATHER INFORMATION... CHECK OUR WEBSITE AT WWW.WEATHER.GOV/PENDLETON. && $$
Nearby
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.