Alert archive / Oklahoma / Tornado Warnings in 2018

Tornado Warning 3, NWS Norman, OK

May 2, 2018Greer County, Kiowa County, Oklahoma

NWS Norman, OK issued this tornado warning at May 2, 2018, 4:23 PM CDT for Greer County, Kiowa County, Oklahoma. It was in force for 39 min. 4 reports came from inside the area while it was in force.

The area

The outline as issued, with what was reported inside it.

The facts

Issued
May 2, 2018, 4:23 PM CDT (21:23 UTC)
Expired
May 2, 2018, 5:02 PM CDT
In force
39 min
Issued by
NWS Norman, OK
Area
Storm-based polygon
Tornado
Radar indicated
Hail
1.75 in

Counties Greer County, OK, Kiowa County, OK

The radar

The Altus AFB radar (KFDR), 71 km from the middle of the area, began a volume at 21:25 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.

What was reported inside it

TimeReportWhereRemark
May 2, 4:30 PM CDTTSTM WND DMGGranite, OKMULTIPLE BARNS AND PORTABLE BUILDINGS DAMAGED. SHINGLE DAMAGE TO HOMES.
May 2, 4:30 PM CDTTSTM WND GST 605 Ese Lone Wolf, OK12 INCH DIAMETER TREE DOWN AS WELL.
May 2, 4:30 PM CDTTSTM WND GST 605 W Lone Wolf, OKSEVERAL TREES BLOWN DOWN.
May 2, 4:38 PM CDTTORNADO1 S Lone Wolf, OKTORNADO LASTED APPROXIMATELY 2 MINUTES.

Local storm reports filed while the alert was in force, from inside its polygon or its counties.

The watch it was issued in

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

IssuedProductOfficeLasted
May 2, 12:59 PM CDTTornado WatchSPC9 hr

The nearest sounding before it

Norman, OK (KOUN), launched 12:00Z, 9.4 hours before the alert went out and 170 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 2018-05-02Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 517 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 2018-05-02The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 139 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
517 J/kg
Mixed-layer CIN
-198 J/kg
Mixed-layer LCL
695 m above ground
0-6 km bulk shear
29 kt
0-1 km storm-relative helicity
139 m²/s²
0-3 km storm-relative helicity
115 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.4

Open this sounding in Storm Lab

The text

As transmitted.

279 
WFUS54 KOUN 022123
TOROUN
OKC055-075-022215-
/O.NEW.KOUN.TO.W.0003.180502T2123Z-180502T2215Z/

BULLETIN - EAS ACTIVATION REQUESTED
Tornado Warning
National Weather Service Norman OK
423 PM CDT WED MAY 2 2018

The National Weather Service in Norman has issued a

* Tornado Warning for...
  Northwestern Kiowa County in southwestern Oklahoma...
  East central Greer County in southwestern Oklahoma...

* Until 515 PM CDT
    
* At 423 PM CDT, a severe thunderstorm capable of producing a tornado
  was located near Granite, moving east at 20 mph.

  HAZARD...Tornado and golf ball size hail. 

  SOURCE...Radar indicated rotation. 

  IMPACT...Flying debris will be dangerous to those caught without 
           shelter. Mobile homes will be damaged or destroyed. 
           Damage to roofs, windows, and vehicles will occur.  Tree 
           damage is likely. 

* Locations impacted include...
  Hobart, Granite, Lone Wolf and Altus-Lugert Lake. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

TAKE COVER NOW! Move to a storm shelter, safe room or an interior
room on the lowest floor of a sturdy building. Avoid windows. If you
are outdoors, in a mobile home, or in a vehicle, move to the closest
substantial shelter and protect yourself from flying debris.

&&

LAT...LON 3488 9942 3496 9946 3510 9908 3501 9902
      3494 9904
TIME...MOT...LOC 2123Z 252DEG 19KT 3493 9936 

TORNADO...RADAR INDICATED
HAIL...1.75IN

$$

MAHALE
3 follow-up statements
183 
WWUS54 KOUN 022133
SVSOUN

Severe Weather Statement
National Weather Service Norman OK
433 PM CDT WED MAY 2 2018

OKC055-075-022215-
/O.CON.KOUN.TO.W.0003.000000T0000Z-180502T2215Z/
Kiowa OK-Greer OK-
433 PM CDT WED MAY 2 2018

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 515 PM CDT FOR
NORTHWESTERN KIOWA AND EAST CENTRAL GREER COUNTIES...
    
At 432 PM CDT, a severe thunderstorm capable of producing a tornado
was located near Lone Wolf, moving east at 25 mph.

HAZARD...Tornado and two inch hail. 

SOURCE...Radar indicated rotation. 

IMPACT...Flying debris will be dangerous to those caught without 
         shelter. Mobile homes will be damaged or destroyed. Damage 
         to roofs, windows, and vehicles will occur.  Tree damage is 
         likely. 

Locations impacted include...
Hobart, Granite, Lone Wolf and Altus-Lugert Lake. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

TAKE COVER NOW! Move to a storm shelter, safe room, or an interior
room on the lowest floor of a sturdy building. Avoid windows. If you
are outdoors, in a mobile home, or in a vehicle, move to the closest
substantial shelter and protect yourself from flying debris.

&&

LAT...LON 3489 9933 3499 9938 3510 9908 3501 9902
      3494 9904
TIME...MOT...LOC 2132Z 251DEG 22KT 3495 9928 

TORNADO...RADAR INDICATED
HAIL...2.00IN

$$

MAHALE
321 
WWUS54 KOUN 022143
SVSOUN

Severe Weather Statement
National Weather Service Norman OK
443 PM CDT WED MAY 2 2018

OKC055-022153-
/O.CAN.KOUN.TO.W.0003.000000T0000Z-180502T2215Z/
Greer OK-
443 PM CDT WED MAY 2 2018

...THE TORNADO WARNING FOR EAST CENTRAL GREER COUNTY IS CANCELLED...
    
The tornadic thunderstorm which prompted the warning has moved out 
of the warned area. Therefore, the warning has been cancelled.

LAT...LON 3501 9933 3510 9908 3501 9902 3494 9904
      3490 9928 3499 9934
TIME...MOT...LOC 2143Z 252DEG 19KT 3497 9921 

$$

OKC075-022215-
/O.CON.KOUN.TO.W.0003.000000T0000Z-180502T2215Z/
Kiowa OK-
443 PM CDT WED MAY 2 2018

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 515 PM CDT FOR
NORTHWESTERN KIOWA COUNTY...
    
At 443 PM CDT, a confirmed tornado was located near Lone Wolf, moving
east at 20 mph.

HAZARD...Tornado and two inch hail. 

SOURCE...Weather spotters confirmed tornado. 

IMPACT...Flying debris will be dangerous to those caught without 
         shelter. Mobile homes will be damaged or destroyed. Damage 
         to roofs, windows, and vehicles will occur.  Tree damage is 
         likely. 

Locations impacted include...
Hobart, Lone Wolf and eastern Altus-Lugert Lake. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

To repeat, a tornado is on the ground. TAKE COVER NOW! Move to a
storm shelter, safe room, or an interior room on the lowest floor of
a sturdy building. Avoid windows. If you are outdoors, in a mobile
home, or in a vehicle, move to the closest substantial shelter and
protect yourself from flying debris.

&&

LAT...LON 3501 9933 3510 9908 3501 9902 3494 9904
      3490 9928 3499 9934
TIME...MOT...LOC 2143Z 252DEG 19KT 3497 9921 

TORNADO...OBSERVED
HAIL...2.00IN

$$

MAHALE
021 
WWUS54 KOUN 022202
SVSOUN

Severe Weather Statement
National Weather Service Norman OK
502 PM CDT WED MAY 2 2018

OKC075-022212-
/O.CAN.KOUN.TO.W.0003.000000T0000Z-180502T2215Z/
Kiowa OK-
502 PM CDT WED MAY 2 2018

...THE TORNADO WARNING FOR NORTHWESTERN KIOWA COUNTY IS CANCELLED...
    
The tornado threat has diminished and the Tornado Warning has been
cancelled. However, large hail and damaging winds remain likely and a
Severe Thunderstorm Warning remains in effect for the area.

LAT...LON 3501 9933 3510 9908 3501 9902 3494 9904
      3490 9928 3499 9934
TIME...MOT...LOC 2201Z 252DEG 19KT 3500 9909 

$$

MAHALE

The office that day

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

IssuedProductOfficeCountiesLasted
May 2, 2:36 PM CDTSpecial Weather StatementOUNBeckham24 min
May 2, 2:39 PM CDTSpecial Weather StatementOUNHarmon21 min
May 2, 2:46 PM CDTSpecial Weather StatementOUNHarper29 min
May 2, 2:52 PM CDTSevere Thunderstorm WarningOUNHarper19 min
May 2, 2:54 PM CDTSevere Thunderstorm WarningOUNHarmon51 min
May 2, 3:08 PM CDTSevere Thunderstorm WarningOUNBeckham, Roger Mills52 min
May 2, 3:16 PM CDTSpecial Weather StatementOUNHarper44 min
May 2, 3:20 PM CDTSevere Thunderstorm WarningOUNBeckham, Greer, Harmon25 min
May 2, 3:24 PM CDTSevere Thunderstorm WarningOUNGreer, Harmon, Jackson36 min
May 2, 3:39 PM CDTSevere Thunderstorm WarningOUNBeckham, Roger Mills51 min
May 2, 3:48 PM CDTSpecial Weather StatementOUNHarmon27 min
May 2, 3:55 PM CDTSpecial Weather StatementOUNHarper65 min
May 2, 3:55 PM CDTSevere Thunderstorm WarningOUNBeckham, Greer, Kiowa, Washita50 min
May 2, 4:04 PM CDTSevere Thunderstorm WarningOUNGreer, Harmon, Jackson, Kiowa41 min
May 2, 4:10 PM CDTSevere Thunderstorm WarningOUNCuster, Dewey, Roger Mills50 min
May 2, 4:27 PM CDTSevere Thunderstorm WarningOUNJackson, Tillman48 min
May 2, 4:42 PM CDTSevere Thunderstorm WarningOUNHarper, Woods31 min
May 2, 4:43 PM CDTSevere Thunderstorm WarningOUNJackson47 min
May 2, 4:56 PM CDTSevere Thunderstorm WarningOUNKiowa, Washita49 min
May 2, 4:59 PM CDTSevere Thunderstorm WarningOUNBlaine, Custer, Dewey46 min
May 2, 5:14 PM CDTSevere Thunderstorm WarningOUNComanche, Jackson, Kiowa, Tillman46 min
May 2, 5:15 PM CDTTornado WarningOUNCaddo, Kiowa, Washita45 min
May 2, 5:29 PM CDTSevere Thunderstorm WarningOUNJackson, Tillman46 min
May 2, 5:35 PM CDTSevere Thunderstorm WarningOUNGreer, Jackson, Kiowa29 min
May 2, 5:57 PM CDTSevere Thunderstorm WarningOUNCaddo, Canadian, Grady48 min
May 2, 5:58 PM CDTSevere Thunderstorm WarningOUNCaddo, Comanche, Kiowa, Tillman62 min
May 2, 6:00 PM CDTSevere Thunderstorm WarningOUNBlaine, Garfield, Kingfisher, Major, Noble45 min
May 2, 6:01 PM CDTSevere Thunderstorm WarningOUNCaddo, Kiowa, Washita44 min
May 2, 6:15 PM CDTSevere Thunderstorm WarningOUNComanche, Cotton, Tillman45 min
May 2, 6:18 PM CDTSevere Thunderstorm WarningOUNCaddo42 min
May 2, 6:23 PM CDTTornado WarningOUNTillman37 min
May 2, 6:36 PM CDTSevere Thunderstorm WarningOUNCaddo, Grady39 min
May 2, 6:43 PM CDTSevere Thunderstorm WarningOUNCaddo, Canadian, Grady47 min
May 2, 6:44 PM CDTSevere Thunderstorm WarningOUNGarfield, Noble35 min
May 2, 6:47 PM CDTTornado Warning Considerable damage threatOUNComanche, Cotton, Tillman28 min
May 2, 6:58 PM CDTSevere Thunderstorm WarningOUNCaddo, Comanche47 min

Nearby

Tornado Warnings in Oklahoma, 2018Every tornado warning in 2018Tornadoes in 2018

Sources

The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.