Alert archive / Idaho / Red Flag Warnings in 2018
Red Flag Warning 12, NWS Boise, ID
NWS Boise, ID issued this red flag warning at Sep 17, 2018, 8:40 AM MDT for Boise County, Camas County, Elmore County, Idaho. It took effect at Sep 17, 2018, 2:00 PM MDT. It was in force for 6 hr. No storm report in the archive falls inside the area while it was in force.
The area
The counties it named.
The facts
- Issued
- Sep 17, 2018, 8:40 AM MDT (14:40 UTC)
- In effect from
- Sep 17, 2018, 2:00 PM MDT
- Expired
- Sep 17, 2018, 8:00 PM MDT
- In force
- 6 hr
- Issued by
- NWS Boise, ID
Counties Boise County, ID, Camas County, ID, Elmore County, ID
The radar
The Boise radar (KCBX), 74 km from the middle of the area, began a volume at 14:42 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, 2.7 hours before the alert went out and 70 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
- 2702 m above ground
- 0-6 km bulk shear
- 35 kt
- 0-1 km storm-relative helicity
- 6 m²/s²
- 0-3 km storm-relative helicity
- 85 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
Nearby
Red Flag Warnings in Idaho, 2018Every red flag warning in 2018
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.