Alert archive / Oklahoma / Severe Thunderstorm Warnings in 2020

Severe Thunderstorm Warning 607, NWS Norman, OK

July 30, 2020Atoka County, Coal County, Pontotoc County, Oklahoma

NWS Norman, OK issued this severe thunderstorm warning at Jul 30, 2020, 6:19 PM CDT for Atoka County, Coal County, Pontotoc County, Oklahoma. It was in force for 26 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
Jul 30, 2020, 6:19 PM CDT (23:19 UTC)
Expired
Jul 30, 2020, 6:45 PM CDT
In force
26 min
Issued by
NWS Norman, OK
Area
Storm-based polygon
Hail
1.0 in
Wind
60.0 mph

Counties Atoka County, OK, Coal County, OK, Pontotoc County, OK

The radar

The Norman radar (KTLX), 123 km from the middle of the area, began a volume at 23:22 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 watch it was issued in

The SPC watch in force over the same counties when this warning went out.

IssuedProductOfficeLasted
Jul 30, 4:35 PM CDTSevere Thunderstorm WatchSPC6 hr

The nearest sounding before it

Norman, OK (KOUN), launched 12:00Z, 11.3 hours before the alert went out and 125 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 2020-07-30Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 386 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 2020-07-30The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -119 square meters per square second.193958Sfc1 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
386 J/kg
Mixed-layer CIN
-23 J/kg
Mixed-layer LCL
659 m above ground
0-6 km bulk shear
9 kt
0-1 km storm-relative helicity
-119 m²/s²
0-3 km storm-relative helicity
-145 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

As transmitted.

688 
WUUS54 KOUN 302319
SVROUN
OKC005-029-123-302345-
/O.NEW.KOUN.SV.W.0607.200730T2319Z-200730T2345Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Norman OK
619 PM CDT Thu Jul 30 2020

The National Weather Service in Norman has issued a

* Severe Thunderstorm Warning for...
  Coal County in southeastern Oklahoma...
  Southeastern Pontotoc County in east central Oklahoma...
  North central Atoka County in southeastern Oklahoma...

* Until 645 PM CDT.

* At 619 PM CDT, severe thunderstorms were located along a line
  extending from 4 miles southwest of Blanco to 3 miles north of
  Tupelo, moving southeast at 30 mph.

  HAZARD...60 mph wind gusts and quarter size hail.

  SOURCE...Radar indicated.

  IMPACT...Hail damage to vehicles is expected. Expect wind damage 
           to roofs, siding, and trees.

* Locations impacted include...
  Coalgate, Stonewall, Tupelo, Centrahoma, Wardville, Jesse, Chockie
  and northeastern Atoka Reservoir.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

For your protection move to an interior room on the lowest floor of a
building.

&&

LAT...LON 3452 9649 3465 9659 3473 9658 3476 9610
      3468 9609 3468 9589 3466 9588 3457 9588
TIME...MOT...LOC 2319Z 298DEG 27KT 3469 9582 3465 9643 

HAIL...1.00IN
WIND...60MPH
 
$$

WR

The office that day

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

IssuedProductOfficeCountiesLasted
Jul 29, 8:49 PM CDTSpecial Weather StatementOUNHarper26 min
Jul 29, 9:15 PM CDTSpecial Weather StatementOUNHarper30 min
Jul 29, 9:45 PM CDTSevere Thunderstorm WarningOUNAlfalfa, Woods, Woodward45 min
Jul 29, 10:23 PM CDTSevere Thunderstorm WarningOUNAlfalfa, Woods36 min
Jul 29, 10:36 PM CDTSpecial Weather StatementOUNAlfalfa24 min
Jul 29, 11:51 PM CDTSpecial Weather StatementOUNGrant, Kay, Noble24 min
Jul 30, 12:15 AM CDTSpecial Weather StatementOUNKay, Noble30 min
Jul 30, 1:53 AM CDTSpecial Weather StatementOUNPayne37 min
Jul 30, 2:37 AM CDTSpecial Weather StatementOUNHarper38 min
Jul 30, 3:18 AM CDTSpecial Weather StatementOUNHarper27 min
Jul 30, 3:57 AM CDTSpecial Weather StatementOUNAlfalfa, Grant, Woods33 min
Jul 30, 4:14 AM CDTSevere Thunderstorm WarningOUNAlfalfa, Garfield, Grant46 min
Jul 30, 4:38 AM CDTSevere Thunderstorm WarningOUNAlfalfa, Blaine, Garfield, Kingfisher, Major37 min
Jul 30, 4:56 AM CDTSevere Thunderstorm WarningOUNGarfield, Grant, Kay, Kingfisher, Logan, Noble and 1 more49 min
Jul 30, 5:46 AM CDTSpecial Weather StatementOUNLincoln, Logan, Oklahoma, Payne29 min
Jul 30, 6:15 AM CDTSpecial Weather StatementOUNLincoln, Oklahoma30 min
Jul 30, 6:48 AM CDTAreal Flood AdvisoryOUNKay3 hr
Jul 30, 3:23 PM CDTSpecial Weather StatementOUNWashita22 min
Jul 30, 4:18 PM CDTSpecial Weather StatementOUNKiowa27 min
Jul 30, 4:22 PM CDTSevere Thunderstorm WarningOUNGreer, Jackson, Kiowa23 min
Jul 30, 4:28 PM CDTSevere Thunderstorm WarningOUNKiowa17 min
Jul 30, 4:43 PM CDTSpecial Weather StatementOUNHughes17 min
Jul 30, 4:48 PM CDTSevere Thunderstorm WarningOUNComanche, Greer, Jackson, Kiowa, Tillman42 min
Jul 30, 4:51 PM CDTSpecial Weather StatementOUNGrady24 min
Jul 30, 5:00 PM CDTSpecial Weather StatementOUNTillman15 min
Jul 30, 5:03 PM CDTSpecial Weather StatementOUNCoal27 min
Jul 30, 5:07 PM CDTSevere Thunderstorm WarningOUNComanche, Grady, Stephens38 min
Jul 30, 5:28 PM CDTSevere Thunderstorm WarningOUNCoal, Hughes32 min
Jul 30, 5:29 PM CDTSevere Thunderstorm WarningOUNComanche, Cotton, Tillman46 min
Jul 30, 5:35 PM CDTSevere Thunderstorm WarningOUNGarvin, McClain40 min
Jul 30, 5:40 PM CDTSevere Thunderstorm WarningOUNComanche, Cotton, Stephens50 min
Jul 30, 5:43 PM CDTSpecial Weather StatementOUNMcClain17 min
Jul 30, 6:07 PM CDTSevere Thunderstorm WarningOUNCarter, Garvin, Grady, McClain, Stephens23 min
Jul 30, 6:14 PM CDTSevere Thunderstorm WarningOUNComanche, Cotton, Jefferson, Stephens, Tillman16 min
Jul 30, 6:27 PM CDTSevere Thunderstorm WarningOUNCarter, Cotton, Garvin, Jefferson, Johnston, Love and 4 more48 min
Jul 30, 6:30 PM CDTAreal Flood AdvisoryOUNCoal, Hughes3 hr
Jul 30, 6:31 PM CDTSevere Thunderstorm WarningOUNComanche, Cotton, Tillman44 min
Jul 30, 6:36 PM CDTSpecial Weather StatementOUNPontotoc24 min
Jul 30, 6:52 PM CDTSpecial Weather StatementOUNEllis23 min
Jul 30, 6:56 PM CDTSevere Thunderstorm WarningOUNAtoka, Coal, Hughes, Johnston, Pontotoc19 min

Nearby

Severe Thunderstorm Warnings in Oklahoma, 2020Every severe thunderstorm warning in 2020

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.