Alert archive / Iowa / Tornado Warnings in 2018

Tornado Warning 31, NWS Des Moines, IA

June 25, 2018Ringgold County, Iowa

NWS Des Moines, IA issued this tornado warning at Jun 25, 2018, 5:26 PM CDT for Ringgold County, Iowa. It was in force for 34 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, 5:26 PM CDT (22:26 UTC)
Expired: Jun 25, 2018, 6:00 PM CDT
In force: 34 min
Issued by: NWS Des Moines, IA
Area: Storm-based polygon
Tornado: Radar indicated
Hail: 0.0 in

County Ringgold County, IA

The radar

The Des Moines radar (KDMX), 122 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 195 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.

172 
WFUS53 KDMX 252226
TORDMX
IAC159-252300-
/O.NEW.KDMX.TO.W.0031.180625T2226Z-180625T2300Z/

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

The National Weather Service in Des Moines  has issued a

* Tornado Warning for...
  Central Ringgold County in south central Iowa...

* Until 600 PM CDT.
    
* At 526 PM CDT, a severe thunderstorm capable of producing a tornado
  was located near Mount Ayr, moving northeast at 20 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.

* This dangerous storm will be near...
  Mount Ayr around 545 PM CDT.

Other locations impacted by this tornadic thunderstorm include Mt Ayr
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 4062 9433 4083 9420 4075 9401 4074 9403
      4059 9427
TIME...MOT...LOC 2226Z 216DEG 18KT 4063 9427 

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

$$

Lee

1 follow-up statement

217 
WWUS53 KDMX 252242
SVSDMX

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

IAC159-252300-
/O.CON.KDMX.TO.W.0031.000000T0000Z-180625T2300Z/
Ringgold IA-
542 PM CDT MON JUN 25 2018

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 600 PM CDT FOR EASTERN
RINGGOLD COUNTY...
    
At 542 PM CDT, a severe thunderstorm capable of producing a tornado
was located over Mount Ayr, moving northeast at 20 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.

This tornadic thunderstorm will remain over mainly rural areas of
eastern Ringgold County, including the following locations... Mt Ayr
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 4063 9421 4068 9429 4083 9420 4075 9401
      4074 9403
TIME...MOT...LOC 2242Z 216DEG 18KT 4070 9421 

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, 5:21 PM CDT	Tornado Warning	DMX	Ringgold, Union	24 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.