Alert archive / Oklahoma / Freeze Warnings in 2019

Freeze Warning 2, NWS Norman, OK

October 10, 20195 counties in Oklahoma

NWS Norman, OK issued this freeze warning at Oct 10, 2019, 10:40 AM CDT for 5 counties in Oklahoma. It took effect at Oct 11, 2019, 3:00 AM CDT. It was in force for 7 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
Oct 10, 2019, 10:40 AM CDT (15:40 UTC)
In effect from
Oct 11, 2019, 3:00 AM CDT
Expired
Oct 11, 2019, 10:00 AM CDT
In force
7 hr
Issued by
NWS Norman, OK

Counties Ellis County, OK, Harper County, OK, Roger Mills County, OK, Woods County, OK, Woodward County, OK

The radar

The Vance AFB radar (KVNX), 125 km from the middle of the area, began a volume at 15:42 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

Norman, OK (KOUN), launched 12:00Z, 3.7 hours before the alert went out and 225 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, Norman, OK at 12:00Z on 2019-10-10Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1510 joules per kilogram.LCLLFCEL10008507005003002001001 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, Norman, OK at 12:00Z on 2019-10-10The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 448 square meters per square second.19395878Sfc1 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
1510 J/kg
Mixed-layer CIN
-147 J/kg
Mixed-layer LCL
694 m above ground
0-6 km bulk shear
36 kt
0-1 km storm-relative helicity
448 m²/s²
0-3 km storm-relative helicity
485 m²/s²
Significant tornado parameter
1.0
Supercell composite
11.0

Open this sounding in Storm Lab

The office that day

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

IssuedProductOfficeCountiesLasted
Oct 9, 7:05 PM CDTSevere Thunderstorm WarningOUNGreer, Jackson, Kiowa, Washita40 min
Oct 9, 7:26 PM CDTSpecial Weather StatementOUNHarmon34 min
Oct 9, 7:45 PM CDTSpecial Weather StatementOUNCaddo30 min
Oct 9, 7:47 PM CDTSpecial Weather StatementOUNKiowa28 min
Oct 9, 7:49 PM CDTSpecial Weather StatementOUNKiowa26 min
Oct 9, 8:01 PM CDTSpecial Weather StatementOUNRoger Mills29 min
Oct 9, 8:11 PM CDTSpecial Weather StatementOUNCaddo34 min
Oct 9, 8:13 PM CDTSevere Thunderstorm WarningOUNComanche, Kiowa47 min
Oct 9, 8:20 PM CDTSevere Thunderstorm WarningOUNEllis40 min
Oct 9, 8:45 PM CDTSevere Thunderstorm WarningOUNWoodward19 min
Oct 9, 8:54 PM CDTSevere Thunderstorm WarningOUNComanche51 min
Oct 9, 9:01 PM CDTSpecial Weather StatementOUNCuster29 min
Oct 9, 9:17 PM CDTSevere Thunderstorm WarningOUNBlaine, Custer, Dewey43 min
Oct 9, 9:23 PM CDTSpecial Weather StatementOUNWoods37 min
Oct 9, 9:41 PM CDTSevere Thunderstorm WarningOUNComanche, Grady, Stephens28 min
Oct 9, 9:44 PM CDTSevere Thunderstorm WarningOUNWoods19 min
Oct 9, 10:01 PM CDTSpecial Weather StatementOUNBlaine29 min
Oct 9, 10:11 PM CDTSevere Thunderstorm WarningOUNBlaine, Canadian, Custer49 min
Oct 9, 11:02 PM CDTSpecial Weather StatementOUNKingfisher28 min
Oct 9, 11:04 PM CDTSpecial Weather StatementOUNAlfalfa41 min
Oct 9, 11:24 PM CDTSpecial Weather StatementOUNGrady51 min
Oct 9, 11:27 PM CDTSevere Thunderstorm WarningOUNAlfalfa, Grant48 min
Oct 10, 12:14 AM CDTSpecial Weather StatementOUNKay46 min
Oct 10, 12:16 AM CDTSpecial Weather StatementOUNMcClain44 min
Oct 10, 12:23 AM CDTSpecial Weather StatementOUNNoble52 min
Oct 10, 12:53 AM CDTSpecial Weather StatementOUNPottawatomie52 min
Oct 10, 1:46 AM CDTSpecial Weather StatementOUNHughes, Seminole59 min
Oct 10, 1:32 PM CDTSpecial Weather StatementOUNSeminole28 min
Oct 10, 1:50 PM CDTSpecial Weather StatementOUNSeminole25 min
Oct 10, 2:01 PM CDTSpecial Weather StatementOUNSeminole29 min
Oct 10, 2:14 PM CDTSpecial Weather StatementOUNOkfuskee16 min
Oct 10, 2:17 PM CDTSpecial Weather StatementOUNMurray28 min
Oct 10, 2:22 PM CDTSevere Thunderstorm WarningOUNHughes53 min
Oct 10, 2:39 PM CDTSpecial Weather StatementOUNMurray36 min
Oct 10, 2:56 PM CDTSpecial Weather StatementOUNCarter34 min
Oct 10, 3:15 PM CDTSpecial Weather StatementOUNHughes15 min
Oct 10, 3:19 PM CDTFreeze WatchOUNAlfalfa, Atoka, Beckham, Blaine, Bryan, Caddo and 42 more23 hr
Oct 10, 3:19 PM CDTSpecial Weather StatementOUNHughes26 min
Oct 10, 3:51 PM CDTSpecial Weather StatementOUNCarter24 min
Oct 10, 3:55 PM CDTSpecial Weather StatementOUNCoal35 min
Oct 10, 4:14 PM CDTSpecial Weather StatementOUNJohnston31 min
Oct 10, 4:15 PM CDTSpecial Weather StatementOUNCoal30 min
Oct 10, 4:18 PM CDTSevere Thunderstorm WarningOUNJohnston, Murray, Pontotoc42 min
Oct 10, 4:21 PM CDTSevere Thunderstorm WarningOUNAtoka, Coal, Hughes42 min
Oct 10, 5:57 PM CDTSpecial Weather StatementOUNAtoka33 min
Oct 10, 6:18 PM CDTSpecial Weather StatementOUNAtoka27 min
Oct 10, 6:20 PM CDTSpecial Weather StatementOUNMarshall25 min

Nearby

Freeze Warnings in Oklahoma, 2019Every freeze warning in 2019

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.