Alert archive / Nebraska / Severe Thunderstorm Warnings in 2014

Severe Thunderstorm Warning 310, NWS Omaha, NE

July 26, 2014Antelope County, Madison County, Nebraska

NWS Omaha, NE issued this severe thunderstorm warning at Jul 26, 2014, 1:30 PM CDT for Antelope County, Madison County, Nebraska. It was in force for 30 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
Jul 26, 2014, 1:30 PM CDT (18:30 UTC)
Expired
Jul 26, 2014, 2:00 PM CDT
In force
30 min
Issued by
NWS Omaha, NE
Area
Storm-based polygon
Hail
1.0 in
Wind
60.0 mph

Counties Antelope County, NE, Madison County, NE

The radar

The Omaha radar (KOAX), 136 km from the middle of the area, began a volume at 18:30 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
Jul 26, 10:15 AM CDTSevere Thunderstorm WatchSPC6 hr

The nearest sounding before it

Omaha, NE (KOAX), launched 12:00Z, 6.5 hours before the alert went out and 136 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 12:00Z on 2014-07-26Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1367 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 12:00Z on 2014-07-26The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -63 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
1367 J/kg
Mixed-layer CIN
-442 J/kg
Mixed-layer LCL
1152 m above ground
0-6 km bulk shear
33 kt
0-1 km storm-relative helicity
-63 m²/s²
0-3 km storm-relative helicity
23 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

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

255 
WUUS53 KOAX 261830
SVROAX
NEC003-119-261900-
/O.NEW.KOAX.SV.W.0310.140726T1830Z-140726T1900Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE OMAHA/VALLEY NEBRASKA
130 PM CDT SAT JUL 26 2014

THE NATIONAL WEATHER SERVICE IN OMAHA HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  SOUTHEASTERN ANTELOPE COUNTY IN NORTHEAST NEBRASKA...
  MADISON COUNTY IN NORTHEAST NEBRASKA...

* UNTIL 200 PM CDT

* AT 130 PM CDT...A SEVERE THUNDERSTORM WAS LOCATED NEAR MEADOW
  GROVE...OR 20 MILES WEST OF NORFOLK...MOVING SOUTHEAST AT 30 MPH.

  HAZARD...60 MPH WIND GUSTS AND QUARTER SIZE HAIL. 

  SOURCE...RADAR INDICATED. 

  IMPACT...HAIL DAMAGE TO VEHICLES IS EXPECTED. EXPECT WIND DAMAGE 
           TO ROOFS...SIDING AND TREES. 

* LOCATIONS IMPACTED INCLUDE...
  MADISON...MEADOW GROVE AND TILDEN. 

THIS INCLUDES THE FOLLOWING HIGHWAYS...
 HIGHWAY 275 IN NEBRASKA BETWEEN MILE MARKERS 53 AND 61.
 HIGHWAY 81 IN NEBRASKA NEAR MILEMARKER 146.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 4209 9779 4186 9737 4175 9781 4179 9784
      4191 9783 4191 9793 4197 9797
TIME...MOT...LOC 1830Z 315DEG 26KT 4198 9781 

HAIL...1.00IN
WIND...60MPH

$$

FOBERT
1 follow-up statement
524 
WWUS53 KOAX 261855
SVSOAX

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE OMAHA/VALLEY NEBRASKA
155 PM CDT SAT JUL 26 2014

NEC003-119-261904-
/O.EXP.KOAX.SV.W.0310.000000T0000Z-140726T1900Z/
ANTELOPE NE-MADISON NE-
155 PM CDT SAT JUL 26 2014

...THE SEVERE THUNDERSTORM WARNING FOR SOUTHEASTERN ANTELOPE AND
MADISON COUNTIES WILL EXPIRE AT 200 PM CDT...
                
THE STORM WHICH PROMPTED THE WARNING HAS WEAKENED BELOW SEVERE
LIMITS...AND NO LONGER POSE AN IMMEDIATE THREAT TO LIFE OR PROPERTY.
THEREFORE THE WARNING WILL BE ALLOWED TO EXPIRE.  HOWEVER GUSTY WINDS
AND HEAVY RAIN ARE STILL POSSIBLE WITH THIS THUNDERSTORM.

A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL 300 PM CDT
SATURDAY AFTERNOON FOR SOUTHWEST IOWA AND NORTHEAST NEBRASKA.

LAT...LON 4209 9779 4186 9737 4175 9781 4179 9784
      4191 9783 4191 9793 4197 9797
TIME...MOT...LOC 1850Z 315DEG 26KT 4198 9781 

$$

FOBERT

The office that day

Everything else NWS Omaha, NE issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Jul 26, 10:52 AM CDTSevere Thunderstorm WarningOAXCedar, Knox38 min
Jul 26, 11:29 AM CDTSevere Thunderstorm WarningOAXCedar13 min
Jul 26, 11:40 AM CDTSevere Thunderstorm WarningOAXKnox35 min
Jul 26, 11:49 AM CDTSevere Thunderstorm WarningOAXKnox26 min
Jul 26, 12:08 PM CDTSevere Thunderstorm WarningOAXAntelope, Knox52 min
Jul 26, 12:12 PM CDTSevere Thunderstorm WarningOAXCedar, Knox, Pierce, Wayne48 min
Jul 26, 12:42 PM CDTSevere Thunderstorm WarningOAXAntelope, Boone, Cuming, Madison, Pierce, Stanton and 1 more48 min
Jul 26, 2:04 PM CDTSpecial Weather StatementOAXBoone, Colfax, Cuming, Dodge, Platte41 min
Jul 26, 2:30 PM CDTSevere Thunderstorm WarningOAXColfax, Platte15 min
Jul 26, 3:14 PM CDTSevere Thunderstorm WarningOAXButler31 min
Jul 26, 3:43 PM CDTSevere Thunderstorm WarningOAXButler, Seward32 min
Jul 26, 4:17 PM CDTSpecial Weather StatementOAXLancaster, Saline, Seward43 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.