Alert archive / Idaho / Flash Flood Watches in 2008
Flash Flood Watch 1, NWS Missoula, MT
NWS Missoula, MT issued this flash flood watch at May 28, 2008, 11:11 AM PDT for Idaho County, Lemhi County, Idaho. It was in force for 8 hr.
The area
The counties it named.
The facts
- Issued
- May 28, 2008, 11:11 AM PDT (18:11 UTC)
- Expired
- May 28, 2008, 7:18 PM PDT
- In force
- 8 hr
- Issued by
- NWS Missoula, MT
- Flood severity
- None
Counties Idaho County, ID, Lemhi County, ID
The radar
The Missoula radar (KMSX), 191 km from the middle of the area, began a volume at 18:14 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 12:00Z, 6.2 hours before the alert went out and 235 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
- 1330 m above ground
- 0-6 km bulk shear
- 20 kt
- 0-1 km storm-relative helicity
- 48 m²/s²
- 0-3 km storm-relative helicity
- 28 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
What forecasters said that day
The local office's own words before this flash flood 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 flash flood watch went out at May 28, 7:12 AM PDT, 3 hours 59 minutes earlier.
Area forecast discussion, May 28, 7:12 AM PDT, 3 hours 59 minutes before
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</html>Hazardous weather outlook, May 28, 3:29 AM PDT, 7 hours 42 minutes before
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Flash Flood Watches in Idaho, 2008Every flash flood watch in 2008
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.