Alert archive / Nebraska / Severe Thunderstorm Warnings in 2001

Severe Thunderstorm Warning 310, NWS Omaha, NE

June 19, 2001Cass County, Otoe County, Nebraska

NWS Omaha, NE issued this severe thunderstorm warning at Jun 19, 2001, 4:22 AM CDT for Cass County, Otoe County, Nebraska. It was in force for 38 min. No storm report in the archive falls inside the area while it was in force.

The area

The outline the Iowa Environmental Mesonet reconstructed for it; the warning itself named whole counties.

The facts

Issued
Jun 19, 2001, 4:22 AM CDT (09:22 UTC)
Expired
Jun 19, 2001, 5:00 AM CDT
In force
38 min
Issued by
NWS Omaha, NE
Area
Whole counties; the outline is the Mesonet’s reconstruction

Counties Cass County, NE, Otoe County, NE

The radar

The Omaha radar (KOAX), 59 km from the middle of the area, began a volume at 09:24 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 00:00Z, 9.4 hours before the alert went out and 59 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 2001-06-19Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 2637 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 2001-06-19The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 65 square meters per square second.193958Sfc1 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
2637 J/kg
Mixed-layer CIN
-44 J/kg
Mixed-layer LCL
2202 m above ground
0-6 km bulk shear
28 kt
0-1 km storm-relative helicity
65 m²/s²
0-3 km storm-relative helicity
346 m²/s²
Significant tornado parameter
0.0
Supercell composite
16.5

Open this sounding in Storm Lab

The text

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

000 
WUUS53 KOAX 190923
SVROMA

NEC025-131-191000-

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE OMAHA NE
422 AM CDT TUE JUN 19 2001

THE NATIONAL WEATHER SERVICE IN OMAHA HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  CASS COUNTY IN SOUTHEAST NEBRASKA
  OTOE COUNTY IN SOUTHEAST NEBRASKA

* UNTIL 500 AM CDT

* AT 422 AM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED   
  A LINE OF SEVERE THUNDERSTORMS FROM NEAR WEEPING WATER TO 4 MILES
  SOUTH OF UNADILLA...OR FROM 27 MILES EAST OF LINCOLN TO 24 MILES  
  SOUTHEAST OF LINCOLN...MOVING EAST AT 30 MPH.

* SOME LOCATIONS AFFECTED...
  WEEPING WATER
  NEHAWKA
  MURRAY...PLATTSMOUTH...
  DUNBAR...LORTON VILLAGE

FOR YOUR PROTECTION...MOVE TO AN INTERIOR ROOM ON THE LOWEST LEVEL OF
YOUR HOME OR BUSINESS. STAY AWAY FROM WINDOWS AND GLASS DOORS.

LAT...LON 4100 9628 4054 9641 4052 9587 4104 9587

MILLER

The office that day

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

IssuedProductOfficeCountiesLasted
Jun 18, 7:05 PM CDTSevere Thunderstorm WarningOAXBurt40 min
Jun 18, 7:18 PM CDTSevere Thunderstorm WarningOAXButler27 min
Jun 18, 7:31 PM CDTTornado WarningOAXBurt29 min
Jun 18, 7:32 PM CDTSevere Thunderstorm WarningOAXDodge, Washington43 min
Jun 18, 7:45 PM CDTSevere Thunderstorm WarningOAXButler, Seward30 min
Jun 18, 8:01 PM CDTSevere Thunderstorm WarningOAXBurt14 min
Jun 18, 8:07 PM CDTSevere Thunderstorm WarningOAXLancaster, Saunders38 min
Jun 18, 8:16 PM CDTSevere Thunderstorm WarningOAXWashington44 min
Jun 18, 8:41 PM CDTSevere Thunderstorm WarningOAXLancaster49 min
Jun 18, 8:51 PM CDTSevere Thunderstorm WarningOAXDouglas39 min
Jun 18, 8:56 PM CDTSevere Thunderstorm WarningOAXSaline19 min
Jun 18, 9:50 PM CDTSevere Thunderstorm WarningOAXJefferson, Saline40 min
Jun 18, 10:34 PM CDTSevere Thunderstorm WarningOAXGage, Jefferson41 min
Jun 18, 11:19 PM CDTSevere Thunderstorm WarningOAXJefferson26 min
Jun 18, 11:39 PM CDTSevere Thunderstorm WarningOAXSaline, Seward51 min
Jun 19, 12:43 AM CDTSevere Thunderstorm WarningOAXSaline32 min
Jun 19, 1:14 AM CDTSevere Thunderstorm WarningOAXLancaster, Saline31 min

Nearby

Severe Thunderstorm Warnings in Nebraska, 2001Every severe thunderstorm warning in 2001

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.