Alert archive / Nebraska / Severe Thunderstorm Warnings in 2014

Severe Thunderstorm Warning 113, NWS Sioux Falls, SD

June 17, 2014Dixon County, Nebraska

NWS Sioux Falls, SD issued this severe thunderstorm warning at Jun 17, 2014, 1:48 AM CDT for Dixon County, Nebraska. It was in force for 27 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 17, 2014, 1:48 AM CDT (06:48 UTC)
Expired
Jun 17, 2014, 2:15 AM CDT
In force
27 min
Issued by
NWS Sioux Falls, SD
Area
Storm-based polygon
Hail
1.25 in
Wind
50.0 mph

County Dixon County, NE

The radar

The Sioux Falls radar (KFSD), 107 km from the middle of the area, began a volume at 06:49 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 watch it was issued in

The SPC watch in force over the same counties when this warning went out.

IssuedProductOfficeLasted
Jun 16, 9:56 PM CDTSevere Thunderstorm WatchSPC5 hr

The nearest sounding before it

Omaha, NE (KOAX), launched 00:00Z, 6.8 hours before the alert went out and 150 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-pSkew-T log-p diagram, Omaha, NE at 00:00Z on 2014-06-17Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 3563 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Omaha, NE at 00:00Z on 2014-06-17The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 248 square meters per square second.19395878Sfc1 km3 km6 km9 kmRMLM
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
3563 J/kg
Mixed-layer CIN
-14 J/kg
Mixed-layer LCL
1174 m above ground
0-6 km bulk shear
43 kt
0-1 km storm-relative helicity
248 m²/s²
0-3 km storm-relative helicity
362 m²/s²
Significant tornado parameter
4.8
Supercell composite
28.3

Open this sounding in Storm Lab

The text

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

946 
WUUS53 KFSD 170648
SVRFSD
NEC051-170715-
/O.NEW.KFSD.SV.W.0113.140617T0648Z-140617T0715Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE SIOUX FALLS SD
148 AM CDT TUE JUN 17 2014

THE NATIONAL WEATHER SERVICE IN SIOUX FALLS HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  NORTHERN DIXON COUNTY IN NORTHEAST NEBRASKA...

* UNTIL 215 AM CDT

* AT 146 AM CDT...A SEVERE THUNDERSTORM WAS LOCATED 7 MILES NORTHWEST
  OF DIXON...AND MOVING NORTHEAST AT 40 MPH.

  HAZARD...HALF DOLLAR SIZE HAIL.

  SOURCE...RADAR INDICATED.

  IMPACT...DAMAGE TO VEHICLES IS EXPECTED.

* LOCATIONS IMPACTED INCLUDE...
  PONCA...MARTINSBURG AND NEWCASTLE.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

FOR YOUR PROTECTION MOVE TO AN INTERIOR ROOM ON THE LOWEST FLOOR OF A
BUILDING.

&&

LAT...LON 4263 9702 4272 9685 4270 9681 4267 9679
      4266 9670 4265 9668 4263 9671 4260 9671
      4256 9665 4241 9702
TIME...MOT...LOC 0649Z 239DEG 35KT 4252 9703

HAIL...1.25IN
WIND...<50MPH

$$

BT
2 follow-up statements
007 
WWUS53 KFSD 170657
SVSFSD

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE SIOUX FALLS SD
157 AM CDT TUE JUN 17 2014

NEC051-170715-
/O.CON.KFSD.SV.W.0113.000000T0000Z-140617T0715Z/
DIXON NE-
157 AM CDT TUE JUN 17 2014

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT FOR NORTHERN DIXON
COUNTY UNTIL 215 AM CDT...

AT 154 AM CDT...A SEVERE THUNDERSTORM WAS LOCATED 8 MILES WEST OF
MARTINSBURG...AND MOVING NORTHEAST AT 40 MPH.

HAZARD...HALF DOLLAR SIZE HAIL.

SOURCE...RADAR INDICATED.

IMPACT...DAMAGE TO VEHICLES IS EXPECTED.

LOCATIONS IMPACTED INCLUDE...
PONCA...MARTINSBURG AND NEWCASTLE.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

FOR YOUR PROTECTION MOVE TO AN INTERIOR ROOM ON THE LOWEST FLOOR OF A
BUILDING.

&&

LAT...LON 4263 9702 4272 9685 4270 9681 4267 9679
      4266 9670 4265 9668 4263 9671 4260 9671
      4256 9665 4241 9702
TIME...MOT...LOC 0657Z 239DEG 35KT 4256 9694

HAIL...1.25IN
WIND...<50MPH

$$

BT
306 
WWUS53 KFSD 170712
SVSFSD

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE SIOUX FALLS SD
212 AM CDT TUE JUN 17 2014

NEC051-170722-
/O.EXP.KFSD.SV.W.0113.000000T0000Z-140617T0715Z/
DIXON NE-
212 AM CDT TUE JUN 17 2014

...THE SEVERE THUNDERSTORM WARNING FOR NORTHERN DIXON COUNTY WILL
EXPIRE AT 215 AM CDT...

THE STORM WHICH PROMPTED THE WARNING HAS WEAKENED BELOW SEVERE
LIMITS...AND NO LONGER POSES AN IMMEDIATE THREAT TO LIFE OR PROPERTY.
 HOWEVER...SMALL HAIL IS STILL POSSIBLE WITH THIS THUNDERSTORM.

LAT...LON 4263 9702 4272 9685 4270 9681 4267 9679
      4266 9670 4265 9668 4263 9671 4260 9671
      4256 9665 4241 9702
TIME...MOT...LOC 0712Z 239DEG 35KT 4263 9677

$$

BT

The office that day

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

IssuedProductOfficeCountiesLasted
Jun 16, 8:18 PM CDTRiver Flood WarningFSDDakota6 days
Jun 16, 9:06 PM CDTAreal Flood WarningFSDDakota, Dixon12 hr
Jun 16, 9:34 PM CDTSevere Thunderstorm WarningFSDDakota, Dixon41 min
Jun 16, 10:15 PM CDTSevere Thunderstorm WarningFSDDakota45 min
Jun 16, 10:34 PM CDTSevere Thunderstorm WarningFSDDakota26 min
Jun 17, 12:40 AM CDTSevere Thunderstorm WarningFSDDixon50 min

Nearby

Severe Thunderstorm Warnings in Nebraska, 2014Every severe thunderstorm warning 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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.