Alert archive / Nebraska / Severe Thunderstorm Warnings in 2002

Severe Thunderstorm Warning 13, NWS Omaha, NE

April 16, 20024 counties in Nebraska

NWS Omaha, NE issued this severe thunderstorm warning at Apr 16, 2002, 7:38 PM CDT for 4 counties in 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 outline as issued.

The facts

Issued: Apr 16, 2002, 7:38 PM CDT (00:38 UTC)
Expired: Apr 16, 2002, 8:15 PM CDT
In force: 37 min
Issued by: NWS Omaha, NE
Area: Counties, with a storm outline in the text

Counties Madison County, NE, Pierce County, NE, Stanton County, NE, Wayne County, NE

The radar

The Omaha radar (KOAX), 114 km from the middle of the area, began a volume at 00:40 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.

Issued	Product	Office	Lasted
Apr 16, 4:00 PM CDT	Severe Thunderstorm Watch	SPC	5 hr
Apr 16, 7:15 PM CDT	Severe Thunderstorm Watch	SPC	5 hr

The nearest sounding before it

Omaha, NE (KOAX), launched 00:00Z, 0.6 hours before the alert went out and 114 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-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

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: 1974 J/kg
Mixed-layer CIN: -50 J/kg
Mixed-layer LCL: 1343 m above ground
0-6 km bulk shear: 37 kt
0-1 km storm-relative helicity: 136 m²/s²
0-3 km storm-relative helicity: 196 m²/s²
Significant tornado parameter: 1.1
Supercell composite: 8.0

Open this sounding in Storm Lab

The text

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

000 
WUUS53 KOAX 170038
SVROMA
NEC119-139-167-179-170115-

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE OMAHA NE
737 PM CDT TUE APR 16 2002

THE NATIONAL WEATHER SERVICE IN OMAHA HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  MADISON COUNTY IN NORTHEAST NEBRASKA
  THIS INCLUDES THE CITY OF NORFOLK
  SOUTHEAST PIERCE COUNTY IN NORTHEAST NEBRASKA
  STANTON COUNTY IN NORTHEAST NEBRASKA
  WAYNE COUNTY IN NORTHEAST NEBRASKA

* UNTIL 815 PM CDT

* AT 735 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED 
  A SEVERE THUNDERSTORM WITH LARGE HAIL NEAR NORFOLK...MOVING
  NORTHEAST AT 25 MPH.  A SPOTTER REPORTED 3/4 INCH HAIL WITH
  THIS STORM.

* SOME LOCATIONS AFFECTED...
  NORFOLK...HADAR...STANTON
  HOSKINS...WINSIDE...PILGER

IF YOU ARE IN THE WARNED AREA...PREPARE FOR DAMAGING WINDS...LARGE
HAIL...HEAVY RAIN AND DANGEROUS LIGHTNING. GET INTO A REINFORCED
BUILDING. STAY AWAY FROM WINDOWS AND GLASS DOORS.

LAT...LON 4197 9765 4173 9728 4219 9681 4239 9725

MILLER

The office that day

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

Issued	Product	Office	Counties	Lasted
Apr 16, 8:02 PM CDT	Severe Thunderstorm Warning	OAX	Colfax, Platte	28 min
Apr 16, 8:23 PM CDT	Severe Thunderstorm Warning	OAX	Butler	52 min
Apr 16, 8:24 PM CDT	Severe Thunderstorm Warning	OAX	Stanton	51 min
Apr 16, 8:32 PM CDT	Severe Thunderstorm Warning	OAX	Cuming, Thurston	43 min
Apr 16, 8:33 PM CDT	Severe Thunderstorm Warning	OAX	Colfax	27 min
Apr 16, 8:49 PM CDT	Severe Thunderstorm Warning	OAX	Dodge	41 min
Apr 16, 8:54 PM CDT	Severe Thunderstorm Warning	OAX	Lancaster, Saunders	36 min
Apr 16, 9:12 PM CDT	Severe Thunderstorm Warning	OAX	Burt, Washington	48 min
Apr 16, 9:16 PM CDT	Severe Thunderstorm Warning	OAX	Thurston	29 min
Apr 16, 9:32 PM CDT	Severe Thunderstorm Warning	OAX	Douglas	28 min
Apr 17, 6:59 PM CDT	Severe Thunderstorm Warning	OAX	Dodge	31 min

Nearby

Severe Thunderstorm Warnings in Nebraska, 2002 Every severe thunderstorm warning in 2002

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.