Alert archive / Nebraska / Severe Thunderstorm Warnings in 1998

Severe Thunderstorm Warning 155, NWS Omaha, NE

June 10, 1998Jefferson County, Nebraska

NWS Omaha, NE issued this severe thunderstorm warning at Jun 10, 1998, 7:33 AM CDT for Jefferson County, Nebraska. It was in force for 47 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: Jun 10, 1998, 7:33 AM CDT (12:33 UTC)
Expired: Jun 10, 1998, 8:20 AM CDT
In force: 47 min
Issued by: NWS Omaha, NE
Area: Whole counties

County Jefferson County, NE

The radar

The Grand Island radar (KUEX), 111 km from the middle of the area, began a volume at 12:32 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

Topeka, KS (KTOP), launched 12:00Z, 0.6 hours before the alert went out and 184 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: 186 J/kg
Mixed-layer CIN: -312 J/kg
Mixed-layer LCL: 615 m above ground
0-6 km bulk shear: 54 kt
0-1 km storm-relative helicity: 167 m²/s²
0-3 km storm-relative helicity: 241 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 4.3

Open this sounding in Storm Lab

The text

The text of this product is not in the archive. The NWS text archive before 2002 is incomplete.

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 Jun 10, 4:00 AM CDT, 3 hours 33 minutes earlier.

Area forecast discussion, Jun 10, 4:00 AM CDT, 3 hours 33 minutes before

CENTRAL NEBRASKA/NORTH CENTRAL KANSAS FORECAST DISCUSSION
NATIONAL WEATHER SERVICE HASTINGS NE
4 AM CDT WED JUN 10 1998

THUNDERSTORMS/SHOWERS MOVG OUT OF ERN CWA IN ASSOC WITH MID LEVEL
WAVE IN CNTRL NEB THIS MORNING. THIS WAVE SHOULD MOVE OUT OF THE CWA CLOSE
TO SR. THEREFORE...BROKE UP ERN CWA ZONES TO ACCOMODATE ACTIVE
WX...AND WILL UPDATE LATER AS SITUATION CHANGES. MODELS AGAIN SORT
OF IN DISARRAY AS TO BEST HANDLING OF FCST. NGM/AVN SHOWING DECENT
DYNAMICS FOR THUNDSTORMS THURSDAY MORNING WHILE ETA NOT AS HARD.
NGM/ANN GIVE BEST DYNAMICS AROUND 12Z THU WHILE THE ETA IS A BIT
MORE SUBDUED. WITH WV IMAGE SHOWING VORT MOVG OUT OF SW THIS
MORNING...NGM/AVN SOLUTION FOR PCPN FOR 12Z THU MAY NOT BE TOO FAR
OFF. BY THU AFTN...NGM INCR 1000-500 MB MOISTURE ACROSS CWA AND FWC
HIGH TEMPS DROP INTO THE L70S. THE ETA/AVN MEANWHILE GO THE OTHER
WAY AND DECRS RH'S AND THE ETA SHOOTS HIGHS INTO THE L80S. PREFERRED
THE DRIER ETA/AVN SOL BY 00Z FRI ON THIS SO WENT PCLDY AND MUCH
ABOVE FWC AFTN HIGHS.

GRI BB 083/064/084/065/086 233

DEE

In the hours before

Special weather statement, Jun 10, 5:10 AM CDT, 2 hours 23 minutes before

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Special weather statement, Jun 10, 6:10 AM CDT, 1 hour 23 minutes before

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Special weather statement, Jun 10, 7:03 AM CDT, 30 minutes before

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The office that day

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

Issued	Product	Office	Counties	Lasted
Jun 10, 8:51 AM CDT	Severe Thunderstorm Warning	OAX	Saline, Seward	64 min
Jun 10, 9:24 AM CDT	Severe Thunderstorm Warning	OAX	Lancaster	51 min

Nearby

Severe Thunderstorm Warnings in Nebraska, 1998 Every severe thunderstorm warning in 1998

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.