Alert archive / Oklahoma / Special Weather Statements in 2021

Special Weather Statement, NWS Norman, OK

March 24, 2021Bryan County, Oklahoma

NWS Norman, OK issued this special weather statement at Mar 24, 2021, 11:39 PM CDT for Bryan County, Oklahoma. It was in force for 21 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
Mar 24, 2021, 11:39 PM CDT (04:39 UTC)
Expired
Mar 25, 2021, 12:00 AM CDT
In force
21 min
Issued by
NWS Norman, OK

County Bryan County, OK

The radar

The Dallas/Ft Worth radar (KFWS), 194 km from the middle of the area, began a volume at 04:42 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 00:00Z, 4.7 hours before the alert went out and 202 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 00:00Z on 2021-03-25Temperature 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, Norman, OK at 00:00Z on 2021-03-25The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 77 square meters per square second.1939587897Sfc1 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
1550 m above ground
0-6 km bulk shear
62 kt
0-1 km storm-relative helicity
77 m²/s²
0-3 km storm-relative helicity
353 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

As transmitted.

985 
WWUS84 KOUN 250439
SPSOUN

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE Norman OK
1139 PM CDT Wed Mar 24 2021
 
OKZ052-250500-
Bryan OK-
1139 PM CDT Wed Mar 24 2021

...SIGNIFICANT WEATHER ADVISORY FOR east central Bryan County Until
midnight CDT...

AT 1137 PM CDT, a strong thunderstorm was located 9 miles south of
Bennington, moving northeast at 40 MPH.

HAZARDS INCLUDE...
Hail up to the size of nickels... 
Wind gusts to 50 MPH...

Locations impacted include...
Wade.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Monitor the weather situation closely and be alert for threatening
weather conditions.

&&

LAT...LON 3385 9578 3386 9580 3386 9582 3383 9584
      3389 9593 3386 9595 3385 9598 3387 9600
      3384 9601 3384 9602 3386 9603 3384 9606
      3390 9613 3405 9594 3394 9594 3393 9592
      3392 9588 3387 9584 3387 9576 3386 9575
TIME...MOT...LOC 0437Z 238DEG 33KT 3387 9600 

$$

11

The office that day

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

IssuedProductOfficeCountiesLasted
Mar 24, 9:34 PM CDTSpecial Weather StatementOUNJohnston26 min
Mar 24, 9:36 PM CDTSpecial Weather StatementOUNGarvin24 min
Mar 24, 9:55 PM CDTSevere Thunderstorm WarningOUNAtoka, Coal, Johnston, Pontotoc35 min
Mar 24, 10:01 PM CDTSpecial Weather StatementOUNPontotoc29 min
Mar 24, 10:05 PM CDTSpecial Weather StatementOUNBryan25 min
Mar 24, 10:21 PM CDTSevere Thunderstorm WarningOUNAtoka, Coal, Hughes39 min
Mar 24, 11:11 PM CDTSpecial Weather StatementOUNBryan34 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.