Alert archive / Arizona / Winter Weather Advisories in 2021
Winter Weather Advisory 3, NWS Flagstaff, AZ
NWS Flagstaff, AZ issued this winter weather advisory at Jan 28, 2021, 2:26 PM MST for 4 counties in Arizona. It took effect at Jan 29, 2021, 12:00 PM MST. It was in force for 12 hr.
The area
The counties it named.
The facts
- Issued
- Jan 28, 2021, 2:26 PM MST (21:26 UTC)
- In effect from
- Jan 29, 2021, 12:00 PM MST
- Expired
- Jan 30, 2021, 12:23 AM MST
- In force
- 12 hr
- Issued by
- NWS Flagstaff, AZ
Counties Apache County, AZ, Coconino County, AZ, Navajo County, AZ, Yavapai County, AZ
The radar
The Flagstaff radar (KFSX), 83 km from the middle of the area, began a volume at 21:22 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
Tuscon, AZ (KTUS), launched 12:00Z, 9.4 hours before the alert went out and 349 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
- 2887 m above ground
- 0-6 km bulk shear
- 39 kt
- 0-1 km storm-relative helicity
- 29 m²/s²
- 0-3 km storm-relative helicity
- 94 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
Nearby
Winter Weather Advisories in Arizona, 2021Every winter weather advisory in 2021
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.