Alert archive / Iowa / Tornado Warnings in 2018

Tornado Warning 30, NWS Des Moines, IA

June 25, 2018Ringgold County, Union County, Iowa

NWS Des Moines, IA issued this tornado warning at Jun 25, 2018, 5:21 PM CDT for Ringgold County, Union County, Iowa. It was in force for 24 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: Jun 25, 2018, 5:21 PM CDT (22:21 UTC)
Expired: Jun 25, 2018, 5:45 PM CDT
In force: 24 min
Issued by: NWS Des Moines, IA
Area: Storm-based polygon
Tornado: Radar indicated
Hail: 0.0 in

Counties Ringgold County, IA, Union County, IA

The radar

The Des Moines radar (KDMX), 108 km from the middle of the area, began a volume at 22:25 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.

The nearest sounding before it

Omaha, NE (KOAX), launched 12:00Z, 10.4 hours before the alert went out and 174 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-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

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: 118 J/kg
Mixed-layer CIN: -61 J/kg
Mixed-layer LCL: 796 m above ground
0-6 km bulk shear: 9 kt
0-1 km storm-relative helicity: -89 m²/s²
0-3 km storm-relative helicity: -80 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

As transmitted.

216 
WFUS53 KDMX 252221
TORDMX
IAC159-175-252245-
/O.NEW.KDMX.TO.W.0030.180625T2221Z-180625T2245Z/

BULLETIN - EAS ACTIVATION REQUESTED
Tornado Warning
National Weather Service Des Moines IA
521 PM CDT MON JUN 25 2018

The National Weather Service in Des Moines  has issued a

* Tornado Warning for...
  Southwestern Union County in south central Iowa...
  Northwestern Ringgold County in south central Iowa...

* Until 545 PM CDT.
    
* At 521 PM CDT, a severe thunderstorm capable of producing a tornado
  was located 9 miles east of Lenox, or 11 miles northwest of Mount
  Ayr, moving northeast at 25 mph.

  HAZARD...Tornado.

  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...
  Diagonal, Arispe, Shannon City and Creston Municipal Airport. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

TAKE COVER NOW! Move to a basement 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 4083 9445 4105 9442 4095 9417 4080 9437
TIME...MOT...LOC 2221Z 211DEG 22KT 4084 9438 

TORNADO...RADAR INDICATED
HAIL...0.00IN

$$

Lee

1 follow-up statement

277 
WWUS53 KDMX 252233 RRA
SVSDMX

Severe Weather Statement
National Weather Service Des Moines IA
533 PM CDT MON JUN 25 2018

IAC159-175-252245-
/O.CON.KDMX.TO.W.0030.000000T0000Z-180625T2245Z/
Union IA-Ringgold IA-
533 PM CDT MON JUN 25 2018

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 545 PM CDT FOR
SOUTHWESTERN UNION AND NORTH CENTRAL RINGGOLD COUNTIES...
    
At 533 PM CDT, a severe thunderstorm capable of producing a tornado
was located 10 miles south of Creston, moving northeast at 25 mph.

HAZARD...Tornado.

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...
Arispe, Shannon City and Creston Municipal Airport. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

TAKE COVER NOW! Move to a basement 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 4105 9442 4095 9417 4083 9433 4089 9444
TIME...MOT...LOC 2233Z 211DEG 22KT 4091 9433 

TORNADO...RADAR INDICATED
HAIL...0.00IN

$$

Lee

The office that day

Everything else NWS Des Moines, IA issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Jun 24, 8:46 PM CDT	Flash Flood Warning	DMX	Kossuth	4 hr
Jun 24, 9:43 PM CDT	River Flood Watch	DMX	Boone, Hamilton, Webster	37 hr
Jun 24, 9:46 PM CDT	Flash Flood Warning	DMX	Hancock, Wright	6 hr
Jun 25, 12:24 AM CDT	Flash Flood Warning	DMX	Hancock	7 hr
Jun 25, 12:47 AM CDT	Areal Flood Warning	DMX	Kossuth	9 hr
Jun 25, 1:08 PM CDT	Flash Flood Watch	DMX	Calhoun, Carroll, Cerro Gordo, Crawford, Emmet, Greene and 10 more	14 hr
Jun 25, 4:56 PM CDT	Tornado Warning Tornado observed	DMX	Ringgold	34 min
Jun 25, 5:19 PM CDT	Tornado Warning Tornado observed	DMX	Ringgold	26 min
Jun 25, 5:26 PM CDT	Tornado Warning	DMX	Ringgold	34 min
Jun 25, 5:58 PM CDT	Tornado Warning	DMX	Decatur, Ringgold	32 min
Jun 25, 6:47 PM CDT	Tornado Warning	DMX	Madison	28 min

Nearby

Tornado Warnings in Iowa, 2018 Every tornado warning in 2018 Tornadoes 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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.