Alert archive / Montana / Wind Advisories in 2015
Wind Advisory 7, NWS Missoula, MT
NWS Missoula, MT issued this wind advisory at Sep 19, 2015, 1:56 PM MDT for Flathead County, Lake County, Sanders County, Montana. It took effect at Sep 20, 2015, 12:00 PM MDT. It was in force for 8 hr.
The area
The counties it named.
The facts
- Issued
- Sep 19, 2015, 1:56 PM MDT (19:56 UTC)
- In effect from
- Sep 20, 2015, 12:00 PM MDT
- Expired
- Sep 20, 2015, 8:10 PM MDT
- In force
- 8 hr
- Issued by
- NWS Missoula, MT
Counties Flathead County, MT, Lake County, MT, Sanders County, MT
The radar
The Missoula radar (KMSX), 98 km from the middle of the area, began a volume at 19:58 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, 7.9 hours before the alert went out and 149 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
- 1683 m above ground
- 0-6 km bulk shear
- 36 kt
- 0-1 km storm-relative helicity
- 63 m²/s²
- 0-3 km storm-relative helicity
- 126 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
139 WWUS75 KMSO 191956 NPWMSO URGENT - WEATHER MESSAGE NATIONAL WEATHER SERVICE MISSOULA MT 156 PM MDT SAT SEP 19 2015 MTZ003-210300- /O.NEW.KMSO.WI.Y.0007.150920T1800Z-150921T0300Z/ FLATHEAD/MISSION VALLEYS- 156 PM MDT SAT SEP 19 2015 ...WIND ADVISORY IN EFFECT FROM NOON TO 9 PM MDT SUNDAY... THE NATIONAL WEATHER SERVICE IN MISSOULA HAS ISSUED A WIND ADVISORY...WHICH IS IN EFFECT FROM NOON TO 9 PM MDT SUNDAY. * IMPACTS/TIMING: GUSTY WINDS WILL EXIST OVER THE FLATHEAD AND MISSION VALLEYS MIDDAY SUNDAY THROUGH SUNDAY EVENING. DANGEROUSLY ACTIVE WAVE CONDITIONS WILL DEVELOP ON AREA LAKES INCLUDING FLATHEAD LAKE. SMALL TREES AND LOOSE OBJECTS MAY BE DAMAGED BY SUDDEN WIND GUSTS. * WINDS: SOUTHWEST TO WEST WINDS 20 TO 30 MPH GUSTING TO 40 MPH AT TIMES. * FLATHEAD LAKE WAVES: 2 FEET, LOCALLY UP TO 3 FEET IN THE AFTERNOON AND EVENING, ESPECIALLY ON THE EAST SIDE OF THE LAKE. * LOCATIONS IMPACTED INCLUDE...FLATHEAD LAKE...FLATHEAD VALLEY... MISSION VALLEY...POLSON PRECAUTIONARY/PREPAREDNESS ACTIONS... 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. && $$
1 follow-up statement
266 WWUS75 KMSO 210210 NPWMSO URGENT - WEATHER MESSAGE NATIONAL WEATHER SERVICE MISSOULA MT 810 PM MDT SUN SEP 20 2015 MTZ003-210315- /O.CAN.KMSO.WI.Y.0007.000000T0000Z-150921T0300Z/ FLATHEAD/MISSION VALLEYS- 810 PM MDT SUN SEP 20 2015 ...WIND ADVISORY IS CANCELLED... THE NATIONAL WEATHER SERVICE IN MISSOULA HAS CANCELLED THE WIND ADVISORY. WINDS HAVE DROPPED OFF SIGNIFICANTLY THIS EVENING AND THUS THE WIND ADVISORY HAS BEEN CANCELLED. $$
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.