Alert archive / Idaho / Winter Storm Watches in 2017
Winter Storm Watch 3, NWS Missoula, MT
NWS Missoula, MT issued this winter storm watch at Jan 30, 2017, 12:07 PM MST for Lemhi County, Idaho. It took effect at Jan 31, 2017, 5:00 PM MST. It was in force for .
The area
The counties it named.
The facts
- Issued
- Jan 30, 2017, 12:07 PM MST (19:07 UTC)
- In effect from
- Jan 31, 2017, 5:00 PM MST
- Expired
- Jan 31, 2017, 1:22 PM MST
- In force
- Issued by
- NWS Missoula, MT
County Lemhi County, ID
The radar
The Pocatello radar (KSFX), 227 km from the middle of the area, began a volume at 19:13 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, 7.1 hours before the alert went out and 360 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
- 603 m above ground
- 0-6 km bulk shear
- 83 kt
- 0-1 km storm-relative helicity
- 163 m²/s²
- 0-3 km storm-relative helicity
- 166 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
What forecasters said that day
The local office's own words before this winter storm watch went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.
NWS Missoula, MT wrote its last area forecast discussion before this winter storm watch went out at Jan 29, 2:46 PM MST, 21 hours 21 minutes earlier.
Area forecast discussion, Jan 29, 2:46 PM MST, 21 hours 21 minutes before
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</html>The office that day
Everything else NWS Missoula, MT issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jan 30, 12:07 PM MST | Winter Storm Warning | MSO | Deer Lodge, Granite, Lake, Mineral, Missoula, Powell and 3 more | 40 hr |
| Jan 30, 12:07 PM MST | Winter Weather Advisory | MSO | Flathead, Granite, Lake, Missoula, Ravalli, Sanders | 40 hr |
Nearby
Winter Storm Watches in Idaho, 2017Every winter storm watch 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.