Alert archive / Iowa / Tornado Warnings in 2014
Tornado Warning 32, NWS Sioux Falls, SD
NWS Sioux Falls, SD issued this tornado warning at Jun 17, 2014, 11:08 PM CDT for Lyon County, Sioux County, Iowa. It was in force for 52 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 17, 2014, 11:08 PM CDT (04:08 UTC)
- Expired
- Jun 18, 2014, 12:00 AM CDT
- In force
- 52 min
- Issued by
- NWS Sioux Falls, SD
- Area
- Storm-based polygon
- Tornado
- Radar indicated
- Hail
- 1.25 in
Counties Lyon County, IA, Sioux County, IA
The radar
The Sioux Falls radar (KFSD), 66 km from the middle of the area, began a volume at 04:08 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 |
|---|---|---|---|
| Jun 17, 11:27 PM CDT | TORNADO | 5 S George, IA | BRIEF TOUCHDOWN |
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 17, 6:48 PM CDT | Tornado Watch | SPC | 6 hr |
The nearest sounding before it
Omaha, NE (KOAX), launched 00:00Z, 4.1 hours before the alert went out and 227 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.
- Mixed-layer CAPE
- 4092 J/kg
- Mixed-layer CIN
- -70 J/kg
- Mixed-layer LCL
- 1440 m above ground
- 0-6 km bulk shear
- 28 kt
- 0-1 km storm-relative helicity
- 98 m²/s²
- 0-3 km storm-relative helicity
- 163 m²/s²
- Significant tornado parameter
- 1.0
- Supercell composite
- 14.4
The text
As transmitted, in the capitals the NWS used until 2016.
858
WFUS53 KFSD 180408
TORFSD
IAC119-167-180500-
/O.NEW.KFSD.TO.W.0032.140618T0408Z-140618T0500Z/
BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE SIOUX FALLS SD
1108 PM CDT TUE JUN 17 2014
THE NATIONAL WEATHER SERVICE IN SIOUX FALLS HAS ISSUED A
* TORNADO WARNING FOR...
SOUTHEASTERN LYON COUNTY IN NORTHWEST IOWA...
NORTH CENTRAL SIOUX COUNTY IN NORTHWEST IOWA...
* UNTIL MIDNIGHT CDT
* AT 1105 PM CDT...A SEVERE THUNDERSTORM CAPABLE OF PRODUCING A
TORNADO WAS LOCATED NEAR BOYDEN...AND MOVING NORTHEAST AT 15 MPH.
HAZARD...TORNADO AND HALF DOLLAR 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.
* THIS DANGEROUS STORM WILL BE NEAR...
MATLOCK AROUND 1115 PM CDT.
GEORGE AROUND 1130 PM CDT.
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 4344 9600 4343 9586 4326 9587 4321 9604
4325 9613
TIME...MOT...LOC 0408Z 213DEG 15KT 4326 9604
TORNADO...RADAR INDICATED
HAIL...1.25IN
$$
SCHUMACHER3 follow-up statements
826
WWUS53 KFSD 180427
SVSFSD
SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE SIOUX FALLS SD
1127 PM CDT TUE JUN 17 2014
IAC167-180437-
/O.CAN.KFSD.TO.W.0032.000000T0000Z-140618T0500Z/
SIOUX IA-
1127 PM CDT TUE JUN 17 2014
...THE TORNADO WARNING FOR NORTH CENTRAL SIOUX COUNTY IS CANCELLED...
THE STORM WHICH PROMPTED THE WARNING HAS MOVED OUT OF THE WARNED
AREA.
LAT...LON 4326 9613 4344 9600 4343 9586 4326 9587
TIME...MOT...LOC 0427Z 219DEG 14KT 4329 9602
$$
IAC119-180500-
/O.CON.KFSD.TO.W.0032.000000T0000Z-140618T0500Z/
LYON IA-
1127 PM CDT TUE JUN 17 2014
...A TORNADO WARNING REMAINS IN EFFECT FOR SOUTHEASTERN LYON COUNTY
UNTIL MIDNIGHT CDT...
AT 1124 PM CDT...A SEVERE THUNDERSTORM CAPABLE OF PRODUCING A TORNADO
WAS LOCATED NEAR GEORGE...AND MOVING NORTHEAST AT 15 MPH.
HAZARD...TORNADO AND QUARTER 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.
THIS DANGEROUS STORM WILL BE NEAR...
GEORGE AROUND 1140 PM CDT.
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 4326 9613 4344 9600 4343 9586 4326 9587
TIME...MOT...LOC 0427Z 219DEG 14KT 4329 9602
TORNADO...RADAR INDICATED
HAIL...1.00IN
$$
SCHUMACHER881
WWUS53 KFSD 180436
SVSFSD
SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE SIOUX FALLS SD
1136 PM CDT TUE JUN 17 2014
IAC119-180500-
/O.CON.KFSD.TO.W.0032.000000T0000Z-140618T0500Z/
LYON IA-
1136 PM CDT TUE JUN 17 2014
...A TORNADO WARNING REMAINS IN EFFECT FOR SOUTHEASTERN LYON COUNTY
UNTIL MIDNIGHT CDT...
AT 1134 PM CDT...A CONFIRMED TORNADO WAS LOCATED NEAR GEORGE...AND
MOVING NORTHEAST AT 10 MPH.
HAZARD...DAMAGING TORNADO AND QUARTER SIZE HAIL.
SOURCE...WEATHER SPOTTERS CONFIRMED A TORNADO AT 1127 PM 5 MILES
SOUTH OF GEORGE.
IMPACT...FLYING DEBRIS WILL BE DANGEROUS TO THOSE CAUGHT WITHOUT
SHELTER. MOBILE HOMES WILL BE DAMAGED OR DESTROYED. DAMAGE
TO ROOFS...WINDOWS AND VEHICLES WILL OCCUR. TREE DAMAGE IS
LIKELY.
THIS TORNADIC STORM WILL BE NEAR...
GEORGE AROUND 1155 PM CDT.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
TO REPEAT...A TORNADO IS ON THE GROUND. TAKE COVER NOW. MOVE TO AN
INTERIOR ROOM ON THE LOWEST FLOOR OF A STURDY BUILDING. AVOID
WINDOWS. IF IN A MOBILE HOME...A VEHICLE OR OUTDOORS...MOVE TO THE
CLOSEST SUBSTANTIAL SHELTER AND PROTECT YOURSELF FROM FLYING DEBRIS.
&&
LAT...LON 4326 9612 4344 9600 4343 9586 4326 9587
TIME...MOT...LOC 0436Z 215DEG 7KT 4329 9599
TORNADO...OBSERVED
HAIL...1.00IN
$$
SCHUMACHER804 WWUS53 KFSD 180455 SVSFSD SEVERE WEATHER STATEMENT NATIONAL WEATHER SERVICE SIOUX FALLS SD 1155 PM CDT TUE JUN 17 2014 IAC119-180504- /O.EXP.KFSD.TO.W.0032.000000T0000Z-140618T0500Z/ LYON IA- 1155 PM CDT TUE JUN 17 2014 ...THE TORNADO WARNING FOR SOUTHEASTERN LYON COUNTY WILL EXPIRE AT MIDNIGHT CDT... THE STORM WHICH PROMPTED THE WARNING HAS WEAKENED BELOW SEVERE LIMITS...AND NO LONGER POSES AN IMMEDIATE THREAT TO LIFE OR PROPERTY. HOWEVER...HEAVY RAIN IS STILL POSSIBLE WITH THIS THUNDERSTORM. IN ADDITION...STRONG THUNDERSTORMS MAY REDEVELOP...AND A TORNADO WATCH REMAINS IN EFFECT UNTIL 5 AM CDT. LAT...LON 4326 9612 4344 9600 4343 9586 4326 9587 TIME...MOT...LOC 0454Z 215DEG 7KT 4332 9596 $$ SCHUMACHER
The office that day
Everything else NWS Sioux Falls, SD issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jun 17, 9:41 PM CDT | Severe Thunderstorm Warning | FSD | Sioux | 49 min |
| Jun 17, 10:28 PM CDT | Severe Thunderstorm Warning | FSD | Lyon, Sioux | 47 min |
| Jun 17, 11:03 PM CDT | Severe Thunderstorm Warning | FSD | Lyon, Sioux | 42 min |
| Jun 17, 11:29 PM CDT | Flash Flood Warning | FSD | Woodbury | 9 hr |
| Jun 18, 12:22 AM CDT | Severe Thunderstorm Warning | FSD | O'Brien, Osceola | 23 min |
| Jun 18, 1:06 AM CDT | Tornado Warning | FSD | Clay | 24 min |
| Jun 18, 1:19 AM CDT | Severe Thunderstorm Warning | FSD | Buena Vista, Clay | 41 min |
| Jun 18, 1:26 AM CDT | Tornado Warning | FSD | Clay | 49 min |
| Jun 18, 7:29 AM CDT | River Flood Warning | FSD | O'Brien, Sioux | 46 hr |
| Jun 18, 1:01 PM CDT | River Flood Warning | FSD | Clay, Dickinson | 12 hr |
Nearby
Tornado Warnings in Iowa, 2014Every tornado warning in 2014Tornadoes 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.