Alert archive / Nebraska / Severe Thunderstorm Warnings in 2013

Severe Thunderstorm Warning 5, NWS Omaha, NE

April 9, 2013Platte County, Nebraska

NWS Omaha, NE issued this severe thunderstorm warning at Apr 9, 2013, 2:23 PM CDT for Platte County, Nebraska. It was in force for 37 min. No storm report in the archive falls inside the area while it was in force.

The area

The counties it named.

The facts

Issued
Apr 9, 2013, 2:23 PM CDT (19:23 UTC)
Expired
Apr 9, 2013, 3:00 PM CDT
In force
37 min
Issued by
NWS Omaha, NE
Area
Storm-based polygon
Hail
1.0 in
Wind
50.0 mph

County Platte County, NE

The radar

The Omaha radar (KOAX), 100 km from the middle of the area, began a volume at 19:27 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 nearest sounding before it

Omaha, NE (KOAX), launched 12:00Z, 7.4 hours before the alert went out and 100 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 2013-04-09Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 0 joules per kilogram.LCLEL10008507005003002001001 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 2013-04-09The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 394 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
0 J/kg
Mixed-layer CIN
No buoyant parcel
Mixed-layer LCL
457 m above ground
0-6 km bulk shear
57 kt
0-1 km storm-relative helicity
394 m²/s²
0-3 km storm-relative helicity
638 m²/s²
Significant tornado parameter
0.0
Supercell composite
5.0

Open this sounding in Storm Lab

What forecasters said that day

The local office's own words before this severe thunderstorm warning went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.

NWS Omaha, NE wrote its last area forecast discussion before this severe thunderstorm warning went out at Apr 9, 12:36 PM CDT, 1 hour 47 minutes earlier.

Area forecast discussion, Apr 9, 12:36 PM CDT, 1 hour 47 minutes before
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Hazardous weather outlook, Apr 9, 11:46 AM CDT, 2 hours 37 minutes before
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In the hours before

Local storm report, Apr 9, 9:38 AM CDT, 4 hours 45 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE OMAHA/VALLEY NEBRASKA
938 AM CDT TUE APR 09 2013

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0700 AM     HEAVY RAIN       PIERCE                  42.20N 97.53W
04/09/2013  M1.50 INCH       PIERCE             NE   CO-OP OBSERVER

0700 AM     HEAVY RAIN       HARTINGTON              42.62N 97.26W
04/09/2013  M1.61 INCH       CEDAR              NE   CO-OP OBSERVER

0700 AM     HEAVY RAIN       CASTANA                 42.07N 95.91W
04/09/2013  M1.70 INCH       MONONA             IA   CO-OP OBSERVER

0700 AM     HEAVY RAIN       COLUMBUS                41.43N 97.36W
04/09/2013  M1.70 INCH       PLATTE             NE   AWOS

0700 AM     HEAVY RAIN       OAKDALE                 42.07N 97.97W
04/09/2013  M1.73 INCH       ANTELOPE           NE   CO-OP OBSERVER

0700 AM     HEAVY RAIN       TEKAMAH                 41.78N 96.22W
04/09/2013  M1.82 INCH       BURT               NE   ASOS

0700 AM     HEAVY RAIN       9 NNE ORCHARD           42.46N 98.17W
04/09/2013  M1.63 INCH       KNOX               NE   CO-OP OBSERVER

0700 AM     HEAVY RAIN       WEST POINT              41.84N 96.71W
04/09/2013  M1.81 INCH       CUMING             NE   CO-OP OBSERVER

0700 AM     HEAVY RAIN       2 NW LITTLE SIOUX       41.83N 96.05W
04/09/2013  M2.35 INCH       HARRISON           IA   CO-OP OBSERVER

0700 AM     HEAVY RAIN       7 NE ONAWA              42.10N 95.99W
04/09/2013  M2.55 INCH       MONONA             IA   CO-OP OBSERVER

            KENNEBEC

&&

PEARSON
Local storm report, Apr 9, 9:45 AM CDT, 4 hours 38 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE OMAHA/VALLEY NEBRASKA
945 AM CDT TUE APR 09 2013

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0945 AM     FREEZING RAIN    BLOOMFIELD              42.60N 97.65W
04/09/2013  M0.12 INCH       KNOX               NE   CO-OP OBSERVER

            ABOUT 1/8 OF ICE ACCUMULATION FROM EARLIER FREEZING RAIN.
            NO PCPN FALLING AT THE PRESENT TIME.

&&

MILLER
Local storm report, Apr 9, 10:25 AM CDT, 3 hours 58 minutes before
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Special weather statement, Apr 9, 1:15 PM CDT, 1 hour 8 minutes before
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Special weather statement, Apr 9, 1:59 PM CDT, 24 minutes before
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The office that day

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

IssuedProductOfficeCountiesLasted
Apr 8, 9:57 PM CDTSpecial Weather StatementOAXMadison48 min
Apr 8, 10:50 PM CDTSpecial Weather StatementOAXDouglas, Washington25 min
Apr 8, 10:52 PM CDTSpecial Weather StatementOAXCuming38 min
Apr 8, 10:56 PM CDTSpecial Weather StatementOAXPlatte49 min
Apr 8, 11:05 PM CDTSpecial Weather StatementOAXBoone40 min
Apr 8, 11:21 PM CDTSpecial Weather StatementOAXWashington39 min
Apr 8, 11:33 PM CDTSpecial Weather StatementOAXColfax42 min
Apr 8, 11:58 PM CDTSpecial Weather StatementOAXBurt32 min
Apr 9, 2:09 AM CDTSpecial Weather StatementOAXPlatte36 min
Apr 9, 3:11 AM CDTSpecial Weather StatementOAXColfax, Platte34 min
Apr 9, 3:45 AM CDTSevere Thunderstorm WarningOAXColfax, Dodge30 min
Apr 9, 3:54 AM CDTSpecial Weather StatementOAXPlatte36 min
Apr 9, 4:02 AM CDTWinter Storm WarningOAXAntelope, Boone, Cedar, Knox, Madison, Pierce and 3 more48 hr
Apr 9, 4:02 AM CDTWinter Weather AdvisoryOAXBoone, Cedar, Madison, Pierce, Platte, Stanton and 1 more12 hr
Apr 9, 4:12 AM CDTSevere Thunderstorm WarningOAXButler, Colfax, Dodge, Platte, Saunders33 min
Apr 9, 4:32 AM CDTSevere Thunderstorm WarningOAXButler, Colfax, Dodge, Saunders43 min
Apr 9, 5:13 AM CDTSevere Thunderstorm WarningOAXBurt, Dodge, Washington32 min
Apr 9, 1:15 PM CDTSpecial Weather StatementOAXAntelope, Boone45 min
Apr 9, 1:59 PM CDTSpecial Weather StatementOAXAntelope, Boone, Madison31 min
Apr 9, 2:46 PM CDTSevere Thunderstorm WarningOAXMadison29 min
Apr 9, 3:07 PM CDTSpecial Weather StatementOAXWayne38 min
Apr 9, 3:29 PM CDTSevere Thunderstorm WarningOAXWayne31 min
Apr 9, 4:01 PM CDTSpecial Weather StatementOAXCedar, Knox, Pierce, Wayne29 min
Apr 9, 4:01 PM CDTWinter Weather AdvisoryOAXBoone, Burt, Butler, Colfax, Cuming, Jefferson and 6 more36 hr
Apr 9, 4:08 PM CDTSpecial Weather StatementOAXThurston22 min
Apr 9, 4:23 PM CDTSpecial Weather StatementOAXCedar, Pierce, Wayne22 min
Apr 9, 4:43 PM CDTSevere Thunderstorm WarningOAXCedar, Wayne32 min
Apr 9, 5:04 PM CDTSpecial Weather StatementOAXBoone, Madison, Platte26 min
Apr 9, 5:22 PM CDTSpecial Weather StatementOAXButler23 min
Apr 9, 5:28 PM CDTSevere Thunderstorm WarningOAXButler, Seward32 min
Apr 9, 5:52 PM CDTSpecial Weather StatementOAXBoone, Madison, Pierce, Platte, Stanton, Wayne23 min
Apr 9, 5:56 PM CDTSevere Thunderstorm WarningOAXButler, Colfax, Dodge, Platte, Saunders34 min
Apr 9, 6:03 PM CDTSpecial Weather StatementOAXLancaster27 min
Apr 9, 6:14 PM CDTSpecial Weather StatementOAXButler31 min
Apr 9, 6:17 PM CDTSevere Thunderstorm WarningOAXLancaster28 min
Apr 9, 6:19 PM CDTSevere Thunderstorm WarningOAXButler, Lancaster, Saunders, Seward26 min
Apr 9, 6:22 PM CDTSevere Thunderstorm WarningOAXPawnee23 min
Apr 9, 6:27 PM CDTSpecial Weather StatementOAXDodge33 min
Apr 9, 6:32 PM CDTSpecial Weather StatementOAXBurt, Dodge28 min
Apr 9, 6:40 PM CDTSevere Thunderstorm WarningOAXSaunders35 min
Apr 9, 6:41 PM CDTSpecial Weather StatementOAXDodge34 min
Apr 9, 6:45 PM CDTSevere Thunderstorm WarningOAXNemaha, Pawnee, Richardson30 min
Apr 9, 6:50 PM CDTSevere Thunderstorm WarningOAXBurt, Dodge25 min
Apr 9, 6:55 PM CDTSevere Thunderstorm WarningOAXBurt, Cuming, Dodge35 min
Apr 9, 4:47 AM CDTSpecial Weather StatementOAXMonona28 min
Apr 9, 5:40 AM CDTSpecial Weather StatementOAXHarrison, Monona35 min

Nearby

Severe Thunderstorm Warnings in Nebraska, 2013Every severe thunderstorm warning in 2013

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.