Alert archive / Idaho / Wind Advisories in 2009
Wind Advisory 4, NWS Missoula, MT
NWS Missoula, MT issued this wind advisory at Jan 11, 2009, 1:31 PM PST for Clearwater County, Idaho County, Idaho. It took effect at Jan 11, 2009, 2:00 PM PST. It was in force for 4 hr.
The area
The counties it named.
The facts
- Issued
- Jan 11, 2009, 1:31 PM PST (21:31 UTC)
- In effect from
- Jan 11, 2009, 2:00 PM PST
- Expired
- Jan 11, 2009, 5:39 PM PST
- In force
- 4 hr
- Issued by
- NWS Missoula, MT
Counties Clearwater County, ID, Idaho County, ID
The radar
The Missoula radar (KMSX), 148 km from the middle of the area, began a volume at 21:37 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
Spokane, WA (KOTX), launched 12:00Z, 9.5 hours before the alert went out and 172 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
- 602 m above ground
- 0-6 km bulk shear
- 79 kt
- 0-1 km storm-relative helicity
- 196 m²/s²
- 0-3 km storm-relative helicity
- 272 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
000 WWUS75 KMSO 112131 NPWMSO URGENT - WEATHER MESSAGE NATIONAL WEATHER SERVICE MISSOULA MT 231 PM MST SUN JAN 11 2009 .TIGHTENING SURFACE PRESSURE GRADIENTS WILL PRODUCE STRONG GUSTY SOUTH WINDS IN THE VICINTITY OF GRANGEVILLE AND THE CAMAS PRAIRIE. PRESSURE GRADIENTS ARE EXPECTED TO EASE BY MID TO LATE EVENING. IDZ007-120400- /O.NEW.KMSO.WI.Y.0004.090111T2200Z-090112T0400Z/ OROFINO/GRANGEVILLE REGION- 131 PM PST SUN JAN 11 2009 ...WIND ADVISORY IN EFFECT UNTIL 8 PM PST THIS EVENING... THE NATIONAL WEATHER SERVICE IN MISSOULA HAS ISSUED A WIND ADVISORY...WHICH IS IN EFFECT UNTIL 8 PM PST THIS EVENING. SUSTAINED WINDS 25 TO 35 MPH WITH GUSTS UP TO 45 MPH ARE EXPECTED. THESE SOUTH WINDS ARE EXPECTED TO PERSIST THROUGH EARLY TO MID SUNDAY EVENING THEN RELAX AS PRESSURE GRAIENTS RELAX. A WIND ADVISORY MEANS THAT WINDS OF 35 MPH ARE EXPECTED. WINDS THIS STRONG CAN MAKE DRIVING DIFFICULT...ESPECIALLY FOR HIGH PROFILE VEHICLES. USE EXTRA CAUTION. $$
1 follow-up statement
000 WWUS75 KMSO 120139 NPWMSO URGENT - WEATHER MESSAGE NATIONAL WEATHER SERVICE MISSOULA MT 639 PM MST SUN JAN 11 2009 IDZ007-120245- /O.CAN.KMSO.WI.Y.0004.000000T0000Z-090112T0400Z/ OROFINO/GRANGEVILLE REGION- 539 PM PST SUN JAN 11 2009 ...WIND ADVISORY IS CANCELLED... THE NATIONAL WEATHER SERVICE IN MISSOULA HAS CANCELLED THE WIND ADVISORY. SURFACE WINDS WILL GRADUALLY WEAKEN ACROSS THE ADVISORY AREA DURING THE REMAINDER OF THIS EVENING...AS THE SURFACE PRESSURE GRADIENT CONTINUES TO WEAKEN. $$
The office that day
Everything else NWS Missoula, MT issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jan 11, 1:08 AM PST | Winter Storm Warning | MSO | Clearwater, Idaho | 4 hr |
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.