Alert archive / Texas / Frost Advisories in 2023

Frost Advisory 4, NWS Amarillo, TX

October 13, 20236 counties in Texas; Beaver County, Texas County, Oklahoma

NWS Amarillo, TX issued this frost advisory at Oct 13, 2023, 1:41 PM CDT for 6 counties in Texas; Beaver County, Texas County, Oklahoma. It took effect at Oct 14, 2023, 4:00 AM CDT. It was in force for 6 hr.

The area

The counties it named.

The facts

Issued
Oct 13, 2023, 1:41 PM CDT (18:41 UTC)
In effect from
Oct 14, 2023, 4:00 AM CDT
Expired
Oct 14, 2023, 10:00 AM CDT
In force
6 hr
Issued by
NWS Amarillo, TX

Counties Beaver County, OK, Texas County, OK, Deaf Smith County, TX, Hansford County, TX, Moore County, TX, Ochiltree County, TX, Oldham County, TX, Sherman County, TX

The radar

The Amarillo radar (KAMA), 93 km from the middle of the area, began a volume at 18:39 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, 6.7 hours before the alert went out and 245 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-pSkew-T log-p diagram, Dodge City, at 12:00Z on 2023-10-13Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 0 joules per kilogram.LCL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Dodge City, at 12:00Z on 2023-10-13The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -180 square meters per square second.1939587897117136Sfc1 km3 km6 km9 kmRMLM
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
977 m above ground
0-6 km bulk shear
37 kt
0-1 km storm-relative helicity
-180 m²/s²
0-3 km storm-relative helicity
-49 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The office that day

Everything else NWS Amarillo, TX issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Oct 13, 3:41 AM CDTFreeze WatchAMADallam, Hartley10 hr
Oct 13, 3:41 AM CDTWind AdvisoryAMAHansford, Lipscomb, Ochiltree, Sherman12 hr
Oct 13, 1:38 PM CDTFreeze WarningAMADallam, Hartley20 hr

Nearby

Frost Advisories in Texas, 2023Frost Advisories in Oklahoma, 2023Every frost advisory in 2023

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.