Alert archive / Iowa / Tornado Warnings in 2016

Tornado Warning 5, NWS Des Moines, IA

May 9, 2016Guthrie County, Iowa

NWS Des Moines, IA issued this tornado warning at May 9, 2016, 8:05 PM CDT for Guthrie County, Iowa. It was in force for 25 min. 3 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 9, 2016, 8:05 PM CDT (01:05 UTC)
Expired: May 9, 2016, 8:30 PM CDT
In force: 25 min
Issued by: NWS Des Moines, IA
Area: Storm-based polygon
Tornado: Observed
Hail: 0.75 in

County Guthrie County, IA

The radar

The Des Moines radar (KDMX), 79 km from the middle of the area, began a volume at 01:08 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

Time	Report	Where	Remark
May 9, 8:18 PM CDT	TORNADO	10 S Coon Rapids, IA	190TH AND DOGWOOD - ROPE TORNADO CONTINUES TO CYCLE BETWEEN FUNNEL AND TORNADO. SAME STORM AS BEFORE.
May 9, 8:22 PM CDT	TORNADO	7 S Coon Rapids, IA	TRAINED SPOTTER REPORTED ROPE TORNADO ON THE GROUND AND ONGOING.
May 9, 8:23 PM CDT	TORNADO	7 S Coon Rapids, IA	ROPE TORNADO HAS MOVED TO NEAR 155TH AND DOGWOOD AT 823 PM. CONTINUES TO FORM AND LIFT. SAME STORM AS BEFORE.

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.

Issued	Product	Office	Lasted
May 9, 5:13 PM CDT	Severe Thunderstorm Watch	SPC	6 hr

The nearest sounding before it

Omaha, NE (KOAX), launched 00:00Z, 1.1 hours before the alert went out and 151 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: 37 J/kg
Mixed-layer CIN: -85 J/kg
Mixed-layer LCL: 2626 m above ground
0-6 km bulk shear: 26 kt
0-1 km storm-relative helicity: 51 m²/s²
0-3 km storm-relative helicity: 202 m²/s²
Significant tornado parameter: 0.0
Supercell composite: -0.4

Open this sounding in Storm Lab

The text

As transmitted.

919 
WFUS53 KDMX 100105
TORDMX
IAC077-100130-
/O.NEW.KDMX.TO.W.0005.160510T0105Z-160510T0130Z/

BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE DES MOINES IA
805 PM CDT MON MAY 9 2016

THE NATIONAL WEATHER SERVICE IN DES MOINES  HAS ISSUED A

* TORNADO WARNING FOR...
  NORTHWESTERN GUTHRIE COUNTY IN WEST CENTRAL IOWA...

* UNTIL 830 PM CDT

* AT 805 PM CDT...A CONFIRMED TORNADO WAS LOCATED 8 MILES NORTHWEST
  OF GUTHRIE CENTER...MOVING NORTH AT 10 MPH.

  HAZARD...DAMAGING TORNADO. 

  SOURCE...EMERGENCY MANAGEMENT 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. 

* THIS TORNADIC THUNDERSTORM WILL REMAIN OVER MAINLY RURAL AREAS OF
  NORTHWESTERN GUTHRIE COUNTY...INCLUDING THE FOLLOWING LOCATIONS:
  BAYARD.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

TO REPEAT...A TORNADO IS ON THE GROUND. 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 4186 9474 4186 9456 4170 9458 4170 9473
TIME...MOT...LOC 0105Z 171DEG 11KT 4173 9465 

TORNADO...OBSERVED
HAIL...<.75IN

$$

ZOGG

2 follow-up statements

563 
WWUS53 KDMX 100119
SVSDMX

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE DES MOINES IA
819 PM CDT MON MAY 9 2016

IAC077-100130-
/O.CON.KDMX.TO.W.0005.000000T0000Z-160510T0130Z/
GUTHRIE IA-
819 PM CDT MON MAY 9 2016

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 830 PM CDT FOR
NORTHWESTERN GUTHRIE COUNTY...
    
AT 819 PM CDT...A CONFIRMED TORNADO WAS LOCATED 6 MILES SOUTH OF COON
RAPIDS...OR 10 MILES NORTHWEST OF GUTHRIE CENTER...MOVING NORTH AT
15 MPH. THE TORNADO HAS A HISTORY OF LIFTING AND THEN DROPPING TO
THE GROUND AGAIN.

HAZARD...DAMAGING TORNADO. 

SOURCE...EMERGENCY MANAGEMENT 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...
BAYARD.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

TO REPEAT...A TORNADO IS ON THE GROUND. 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 4186 9474 4186 9456 4175 9458 4175 9473
TIME...MOT...LOC 0119Z 174DEG 13KT 4178 9466 

TORNADO...OBSERVED
HAIL...<.75IN

$$

ZOGG

148 
WWUS53 KDMX 100129
SVSDMX

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE DES MOINES IA
829 PM CDT MON MAY 9 2016

IAC077-100139-
/O.EXP.KDMX.TO.W.0005.000000T0000Z-160510T0130Z/
GUTHRIE IA-
829 PM CDT MON MAY 9 2016

...THE TORNADO WARNING FOR NORTHWESTERN GUTHRIE COUNTY WILL EXPIRE AT
830 PM CDT...
    
THE TORNADO THREAT HAS DIMINISHED...THEREFORE THE TORNADO WARNING
WILL BE ALLOWED TO EXPIRE. HOWEVER...LARGE HAIL AND DAMAGING WINDS
REMAIN LIKELY AND A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT
FOR THE AREA.

REMEMBER...A SEVERE THUNDERSTORM WARNING STILL REMAINS IN EFFECT
UNTIL 845 PM CDT.

LAT...LON 4186 9474 4186 9456 4175 9458 4175 9473
TIME...MOT...LOC 0126Z 171DEG 11KT 4178 9466 

$$

ZOGG

The office that day

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

Issued	Product	Office	Counties	Lasted
May 9, 7:15 PM CDT	Severe Thunderstorm Warning	DMX	Audubon, Guthrie	45 min
May 9, 8:00 PM CDT	Severe Thunderstorm Warning	DMX	Audubon, Carroll, Greene, Guthrie	45 min
May 9, 8:37 PM CDT	Severe Thunderstorm Warning	DMX	Audubon, Carroll, Crawford	37 min
May 9, 8:50 PM CDT	Special Weather Statement	DMX	Adams, Taylor	40 min
May 9, 10:26 PM CDT	Flash Flood Warning	DMX	Audubon, Carroll, Guthrie	6 hr
May 9, 11:41 PM CDT	Special Weather Statement	DMX	Audubon	49 min

Nearby

Tornado Warnings in Iowa, 2016 Every tornado warning in 2016 Tornadoes in 2016

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.