Alert archive / Iowa / Tornado Warnings in 2014

Tornado Warning 25, NWS Sioux Falls, SD

June 16, 2014Plymouth County, Woodbury County, Iowa; Union County, South Dakota; Dakota County, Nebraska

NWS Sioux Falls, SD issued this tornado warning at Jun 16, 2014, 5:47 PM CDT for Plymouth County, Woodbury County, Iowa; Union County, South Dakota; Dakota County, Nebraska. It was in force for 43 min. 1 report 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: Jun 16, 2014, 5:47 PM CDT (22:47 UTC)
Expired: Jun 16, 2014, 6:30 PM CDT
In force: 43 min
Issued by: NWS Sioux Falls, SD
Area: Storm-based polygon
Tornado: Observed
Hail: 1.5 in

Counties Plymouth County, IA, Woodbury County, IA, Dakota County, NE, Union County, SD

The radar

The Sioux Falls radar (KFSD), 107 km from the middle of the area, began a volume at 22:46 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
Jun 16, 5:53 PM CDT	HAIL 1.25	1 N Sioux City, IA

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
Jun 16, 12:25 PM CDT	Tornado Watch	SPC	8 hr
Jun 16, 5:37 PM CDT	Tornado Watch	SPC	6 hr
Jun 16, 3:07 PM CDT	Tornado Watch PDS	SPC	7 hr

The nearest sounding before it

Omaha, NE (KOAX), launched 12:00Z, 10.8 hours before the alert went out and 147 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: 33 J/kg
Mixed-layer CIN: -485 J/kg
Mixed-layer LCL: 1667 m above ground
0-6 km bulk shear: 37 kt
0-1 km storm-relative helicity: 137 m²/s²
0-3 km storm-relative helicity: 236 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.1

Open this sounding in Storm Lab

The text

As transmitted, in the capitals the NWS used until 2016.

415 
WFUS53 KFSD 162247
TORFSD
IAC149-193-NEC043-SDC127-162330-
/O.NEW.KFSD.TO.W.0025.140616T2247Z-140616T2330Z/

BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE SIOUX FALLS SD
547 PM CDT MON JUN 16 2014

THE NATIONAL WEATHER SERVICE IN SIOUX FALLS HAS ISSUED A

* TORNADO WARNING FOR...
  SOUTHWESTERN PLYMOUTH COUNTY IN NORTHWEST IOWA...
  NORTHWESTERN WOODBURY COUNTY IN WEST CENTRAL IOWA...
  NORTHEASTERN DAKOTA COUNTY IN NORTHEAST NEBRASKA...
  SOUTHEASTERN UNION COUNTY IN SOUTHEAST SOUTH DAKOTA...

* UNTIL 630 PM CDT

* AT 543 PM CDT...A CONFIRMED TORNADO WAS LOCATED NEAR JACKSON...AND
  MOVING NORTHEAST AT 30 MPH.

  HAZARD...DAMAGING TORNADO AND PING PONG BALL SIZE 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.

* THE TORNADO WILL BE NEAR...
  SOUTH SIOUX CITY AROUND 555 PM CDT.
  NORTH SIOUX CITY AND STONE STATE PARK AROUND 600 PM CDT.
  JEFFERSON AROUND 605 PM CDT.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

THIS STORM HAS A HISTORY OF PRODUCING TORNADOES. TAKE COVER IN A
BASEMENT OR STORM SHELTER NOW!

&&

LAT...LON 4279 9649 4271 9625 4243 9643 4249 9663
TIME...MOT...LOC 2247Z 205DEG 28KT 4245 9656

TORNADO...OBSERVED
HAIL...1.50IN

$$

CHAPMAN

2 follow-up statements

110 
WWUS53 KFSD 162306
SVSFSD

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE SIOUX FALLS SD
606 PM CDT MON JUN 16 2014

NEC043-SDC127-162315-
/O.CAN.KFSD.TO.W.0025.000000T0000Z-140616T2330Z/
DAKOTA NE-UNION SD-
606 PM CDT MON JUN 16 2014

...THE TORNADO WARNING FOR SOUTHEASTERN UNION AND NORTHEASTERN DAKOTA
COUNTIES IS CANCELLED...

THE STORM WHICH PROMPTED THE WARNING HAS MOVED OUT OF THE WARNED 
AREA.

LAT...LON 4253 9648 4255 9647 4256 9650 4273 9639
      4271 9625 4248 9639 4248 9641
TIME...MOT...LOC 2305Z 215DEG 20KT 4256 9643

$$

IAC149-193-162330-
/O.CON.KFSD.TO.W.0025.000000T0000Z-140616T2330Z/
PLYMOUTH IA-WOODBURY IA-
606 PM CDT MON JUN 16 2014

...A TORNADO WARNING REMAINS IN EFFECT FOR NORTHWESTERN WOODBURY AND
SOUTH CENTRAL PLYMOUTH COUNTIES UNTIL 630 PM CDT...

AT 605 PM CDT...NATIONAL WEATHER SERVICE METEOROLOGISTS WERE TRACKING
A SEVERE THUNDERSTORM CAPABLE OF PRODUCING A TORNADO.  THIS DANGEROUS
STORM WAS LOCATED NEAR STONE STATE PARK...OR NEAR SIOUX CITY...MOVING
NORTHEAST AT 25 MPH.

THIS TORNADO WILL AFFECT FAR NORTHERN PORTIONS OF SIOUX CITY...ALONG 
WITH MAINLY RURAL AREAS OF SOUTHWEST AND SOUTH CENTRAL PLYMOUTH 
COUNTIES NEAR HINTON.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

TAKE COVER NOW. MOVE TO AN INTERIOR ROOM ON THE LOWEST FLOOR OF A
STURDY BUILDING. AVOID WINDOWS. IF IN A MOBILE HOME...A VEHICLE OR
OUTDOORS...MOVE TO THE CLOSEST SUBSTANTIAL SHELTER AND PROTECT
YOURSELF FROM FLYING DEBRIS.

&&

LAT...LON 4253 9648 4255 9647 4256 9650 4273 9639
      4271 9625 4248 9639 4248 9641
TIME...MOT...LOC 2305Z 215DEG 20KT 4256 9643

$$

CHAPMAN

760 
WWUS53 KFSD 162312 RRA
SVSFSD

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE SIOUX FALLS SD
612 PM CDT MON JUN 16 2014

IAC149-193-162322-
/O.CAN.KFSD.TO.W.0025.000000T0000Z-140616T2330Z/
PLYMOUTH IA-WOODBURY IA-
612 PM CDT MON JUN 16 2014

...THE TORNADO WARNING FOR NORTHWESTERN WOODBURY AND SOUTH CENTRAL
PLYMOUTH COUNTIES IS CANCELLED...

THE STORM WHICH PROMPTED THE WARNING HAS WEAKENED BELOW SEVERE
LIMITS...AND NO LONGER POSES AN IMMEDIATE THREAT TO LIFE OR PROPERTY.

ADDITIONAL STRONG THUNDERSTORMS ARE STILL POSSIBLE...AND A TORNADO 
WATCH REMAINS IN EFFECT UNTIL MIDNIGHT CDT.

LAT...LON 4253 9648 4255 9647 4256 9650 4273 9639
      4271 9625 4248 9639 4248 9641
TIME...MOT...LOC 2312Z 215DEG 20KT 4259 9640

$$

CHAPMAN

The office that day

Everything else NWS Sioux Falls, SD issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Jun 16, 3:39 AM CDT	Flash Flood Watch	FSD	Buena Vista, Cherokee, Clay, Dickinson, Ida, Lyon and 5 more	20 hr
Jun 16, 10:07 AM CDT	Severe Thunderstorm Warning	FSD	Woodbury	38 min
Jun 16, 10:51 AM CDT	Severe Thunderstorm Warning	FSD	Lyon, Sioux	39 min
Jun 16, 10:53 AM CDT	Flash Flood Warning	FSD	Lyon, Plymouth, Sioux	3 hr
Jun 16, 11:07 AM CDT	Flash Flood Warning	FSD	Cherokee, Clay, Dickinson, Lyon, O'Brien, Osceola and 3 more	9 hr
Jun 16, 12:02 PM CDT	Severe Thunderstorm Warning	FSD	Woodbury	43 min
Jun 16, 12:58 PM CDT	Flash Flood Warning	FSD	Buena Vista, Cherokee, Ida, Woodbury	3 hr
Jun 16, 1:06 PM CDT	Severe Thunderstorm Warning	FSD	Plymouth, Sioux	39 min
Jun 16, 1:34 PM CDT	Severe Thunderstorm Warning	FSD	O'Brien, Sioux	26 min
Jun 16, 1:45 PM CDT	Severe Thunderstorm Warning	FSD	Lyon, Sioux	30 min
Jun 16, 1:50 PM CDT	Severe Thunderstorm Warning	FSD	O'Brien	25 min
Jun 16, 2:15 PM CDT	Severe Thunderstorm Warning	FSD	Lyon, Osceola	30 min
Jun 16, 2:35 PM CDT	Tornado Warning	FSD	Osceola	25 min
Jun 16, 2:54 PM CDT	Tornado Warning	FSD	Dickinson, Osceola	21 min
Jun 16, 3:15 PM CDT	Severe Thunderstorm Warning	FSD	Lyon	45 min
Jun 16, 3:24 PM CDT	Flash Flood Warning	FSD	Lyon, Sioux	4 hr
Jun 16, 3:41 PM CDT	Tornado Warning	FSD	Lyon	34 min
Jun 16, 3:54 PM CDT	Severe Thunderstorm Warning	FSD	Lyon	51 min
Jun 16, 4:10 PM CDT	Severe Thunderstorm Warning	FSD	Clay, Dickinson	35 min
Jun 16, 4:37 PM CDT	Severe Thunderstorm Warning	FSD	Lyon, O'Brien, Osceola, Sioux	23 min
Jun 16, 4:39 PM CDT	Severe Thunderstorm Warning	FSD	Dickinson	36 min
Jun 16, 4:40 PM CDT	Tornado Warning	FSD	Buena Vista, Cherokee, Clay, O'Brien	50 min
Jun 16, 4:58 PM CDT	Severe Thunderstorm Warning	FSD	Dickinson, Lyon, Osceola	47 min
Jun 16, 4:58 PM CDT	Tornado Warning Tornado observed	FSD	Woodbury	32 min
Jun 16, 5:05 PM CDT	Tornado Warning	FSD	Osceola	25 min
Jun 16, 5:11 PM CDT	Flash Flood Warning	FSD	Buena Vista, Cherokee, Clay, Dickinson, O'Brien	3 hr
Jun 16, 5:22 PM CDT	Severe Thunderstorm Warning	FSD	Buena Vista, Cherokee, Clay	68 min
Jun 16, 5:24 PM CDT	River Flood Warning	FSD	Lyon	57 hr
Jun 16, 5:27 PM CDT	Tornado Warning	FSD	Woodbury	33 min
Jun 16, 5:57 PM CDT	Severe Thunderstorm Warning	FSD	Clay, Dickinson, O'Brien	48 min
Jun 16, 6:34 PM CDT	Severe Thunderstorm Warning	FSD	Buena Vista, Clay	26 min
Jun 16, 10:21 AM CDT	Severe Thunderstorm Warning	FSD	Brule, Jerauld	54 min
Jun 16, 11:08 AM CDT	Severe Thunderstorm Warning	FSD	Aurora, Jerauld, Sanborn	52 min
Jun 16, 11:52 AM CDT	Severe Thunderstorm Warning	FSD	Davison, Hanson, Miner, Sanborn	38 min
Jun 16, 12:17 PM CDT	Severe Thunderstorm Warning	FSD	McCook, Minnehaha	43 min
Jun 16, 12:31 PM CDT	Flash Flood Warning	FSD	Brookings, Minnehaha, Moody	6 hr
Jun 16, 12:33 PM CDT	Severe Thunderstorm Warning	FSD	Lake, Miner	42 min
Jun 16, 12:59 PM CDT	Severe Thunderstorm Warning	FSD	Minnehaha	46 min
Jun 16, 1:11 PM CDT	Severe Thunderstorm Warning	FSD	Minnehaha	49 min
Jun 16, 1:34 PM CDT	Severe Thunderstorm Warning	FSD	Moody	41 min
Jun 16, 1:39 PM CDT	Flash Flood Warning	FSD	Brookings, Lake, Lincoln, McCook, Miner, Minnehaha and 2 more	3 hr
Jun 16, 1:52 PM CDT	Severe Thunderstorm Warning	FSD	Minnehaha, Moody	38 min
Jun 16, 2:00 PM CDT	Severe Thunderstorm Warning	FSD	Hutchinson, McCook, Minnehaha, Turner	45 min
Jun 16, 2:17 PM CDT	Severe Thunderstorm Warning	FSD	Minnehaha	43 min
Jun 16, 2:41 PM CDT	Severe Thunderstorm Warning	FSD	Lincoln, Minnehaha, Turner	34 min
Jun 16, 4:26 PM CDT	Flash Flood Warning	FSD	Lincoln, McCook, Minnehaha, Turner	2 hr
Jun 16, 5:24 PM CDT	River Flood Warning	FSD	Minnehaha, Moody	38 hr
Jun 16, 5:24 PM CDT	River Flood Warning	FSD	Minnehaha	44 hr
Jun 16, 5:45 PM CDT	Severe Thunderstorm Warning	FSD	Lincoln, Turner	45 min
Jun 16, 6:12 PM CDT	Flash Flood Warning	FSD	Clay, Turner, Yankton	3 hr
Jun 16, 6:23 PM CDT	Flash Flood Warning	FSD	Minnehaha, Moody	3 hr
Jun 16, 6:27 PM CDT	Severe Thunderstorm Warning	FSD	Clay, Lincoln, Turner	48 min
Jun 16, 6:35 PM CDT	River Flood Warning	FSD	Minnehaha	3 days
Jun 16, 6:51 PM CDT	Severe Thunderstorm Warning	FSD	Clay	24 min

Nearby

Tornado Warnings in Iowa, 2014 Tornado Warnings in South Dakota, 2014 Tornado Warnings in Nebraska, 2014 Every tornado warning in 2014 Tornadoes in 2014

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.