Alert archive / Oklahoma / Frost Advisories in 2022

Frost Advisory 3, NWS Norman, OK

April 25, 20228 counties in Oklahoma

NWS Norman, OK issued this frost advisory at Apr 25, 2022, 5:31 PM CDT for 8 counties in Oklahoma. It took effect at Apr 26, 2022, 1:00 AM CDT. It was in force for 8 hr.

The area

The counties it named.

The facts

Issued: Apr 25, 2022, 5:31 PM CDT (22:31 UTC)
In effect from: Apr 26, 2022, 1:00 AM CDT
Expired: Apr 26, 2022, 9:00 AM CDT
In force: 8 hr
Issued by: NWS Norman, OK

Counties Beckham County, OK, Custer County, OK, Dewey County, OK, Ellis County, OK, Harper County, OK, Roger Mills County, OK, Washita County, OK, Woodward County, OK

The radar

The Vance AFB radar (KVNX), 145 km from the middle of the area, began a volume at 22:31 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

Dodge City, (KDDC), launched 12:00Z, 10.5 hours before the alert went out and 212 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.

Skew-T log-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

The wind turning with height, colored by layer: ground to 1 km, 1 to 3 km, 3 to 6 km, 6 to 10 km.

Mixed-layer CAPE: 0 J/kg
Mixed-layer CIN: No buoyant parcel
Mixed-layer LCL: 1579 m above ground
0-6 km bulk shear: 40 kt
0-1 km storm-relative helicity: -74 m²/s²
0-3 km storm-relative helicity: 7 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

What forecasters said that day

The local office's own words before this frost advisory went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.

NWS Norman, OK wrote its last area forecast discussion before this frost advisory went out at Apr 24, 5:56 PM CDT, 23 hours 35 minutes earlier.

Area forecast discussion, Apr 24, 5:56 PM CDT, 23 hours 35 minutes before

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The office that day

Everything else NWS Norman, OK issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Apr 24, 10:14 PM CDT	Areal Flood Advisory	OUN	Atoka, Bryan, Marshall	6 hr
Apr 24, 11:23 PM CDT	River Flood Advisory	OUN	Comanche, Cotton	12 hr

Nearby

Frost Advisories in Oklahoma, 2022 Every frost advisory in 2022

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.