Alert archive / Oklahoma / Special Weather Statements in 2021

Special Weather Statement, NWS Norman, OK

May 19, 2021Greer County, Oklahoma

NWS Norman, OK issued this special weather statement at May 19, 2021, 1:07 AM CDT for Greer County, Oklahoma. It was in force for 23 min. No storm report in the archive falls inside the area while it was in force.

The area

The outline as issued.

The facts

Issued
May 19, 2021, 1:07 AM CDT (06:07 UTC)
Expired
May 19, 2021, 1:30 AM CDT
In force
23 min
Issued by
NWS Norman, OK

County Greer County, OK

The radar

The Altus AFB radar (KFDR), 87 km from the middle of the area, began a volume at 06:08 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 00:00Z, 6.1 hours before the alert went out and 305 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 00:00Z on 2021-05-19Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 93 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, Dodge City, at 00:00Z on 2021-05-19The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 12 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
93 J/kg
Mixed-layer CIN
-16 J/kg
Mixed-layer LCL
1281 m above ground
0-6 km bulk shear
22 kt
0-1 km storm-relative helicity
12 m²/s²
0-3 km storm-relative helicity
24 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

As transmitted.

416 
WWUS84 KOUN 190607
SPSOUN

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE Norman OK
107 AM CDT Wed May 19 2021
 
OKZ034-035-190630-
Kiowa OK-Greer OK-
107 AM CDT Wed May 19 2021

...SIGNIFICANT WEATHER ADVISORY FOR northwestern Kiowa and
northeastern Greer Counties Until 130 AM CDT...

AT 103 AM CDT, a strong thunderstorm was located near Granite, moving
north at 25 MPH.

HAZARDS INCLUDE...
Wind gusts to 40 MPH...
Heavy rain can lead to reduced visibility... 
Frequent cloud to ground lightning... 

Locations impacted include...
Mangum, Granite, Lone Wolf, Willow, Altus-Lugert Lake and Brinkman. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Severe weather is not expected and no warnings are anticipated at
this time.

&&

LAT...LON 3512 9950 3512 9944 3511 9944 3511 9941
      3512 9941 3512 9915 3481 9933 3486 9954
TIME...MOT...LOC 0603Z 197DEG 21KT 3491 9941 

$$

03

The office that day

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

IssuedProductOfficeCountiesLasted
May 18, 11:50 PM CDTSpecial Weather StatementOUNHarmon, Jackson40 min
May 19, 12:25 AM CDTSpecial Weather StatementOUNJackson35 min
May 19, 12:39 AM CDTSpecial Weather StatementOUNCoal36 min
May 18, 10:30 PM CDTSpecial Weather StatementOUNHardeman45 min
May 18, 11:11 PM CDTSpecial Weather StatementOUNFoard, Hardeman, Knox64 min
May 18, 11:48 PM CDTSpecial Weather StatementOUNBaylor, Wilbarger42 min

Nearby

Special Weather Statements in Oklahoma, 2021Every special weather statement 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.