Alert archive / Nebraska / Severe Thunderstorm Warnings in 2001

Severe Thunderstorm Warning 317, NWS Omaha, NE

July 2, 2001Knox County, Pierce County, Nebraska

NWS Omaha, NE issued this severe thunderstorm warning at Jul 2, 2001, 3:06 AM CDT for Knox County, Pierce County, Nebraska. It was in force for 24 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: Jul 2, 2001, 3:06 AM CDT (08:06 UTC)
Expired: Jul 2, 2001, 3:30 AM CDT
In force: 24 min
Issued by: NWS Omaha, NE
Area: Whole counties; the outline is the Mesonet’s reconstruction

Counties Knox County, NE, Pierce County, NE

The radar

The Sioux Falls radar (KFSD), 151 km from the middle of the area, began a volume at 08:06 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, 8.1 hours before the alert went out and 170 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: 0 J/kg
Mixed-layer CIN: No buoyant parcel
Mixed-layer LCL: 991 m above ground
0-6 km bulk shear: 41 kt
0-1 km storm-relative helicity: 15 m²/s²
0-3 km storm-relative helicity: 70 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

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 Jul 1, 3:41 PM CDT, 11 hours 25 minutes earlier.

Area forecast discussion, Jul 1, 3:41 PM CDT, 11 hours 25 minutes before

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In the hours before

Local storm report, Jul 2, 2:12 AM CDT, 54 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE OMAHA/VALLEY NE
212 AM CDT MON JUL 02 2001

TIME(CDT)  .....CITY LOCATION.....STATE   ...EVENT/REMARKS...
           ....COUNTY LOCATION....1

0158 AM    CREIGHTON                 NE   .88 INCH HAIL
07/02/01   KNOX                           REPORTED BY LAW
                                          ENFORCEMENT OFFICIAL.

MILLER

The office that day

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

Issued	Product	Office	Counties	Lasted
Jul 2, 1:45 AM CDT	Severe Thunderstorm Warning	OAX	Knox	45 min
Jul 2, 3:31 AM CDT	Severe Thunderstorm Warning	OAX	Pierce	29 min
Jul 2, 5:42 AM CDT	Severe Thunderstorm Warning	OAX	Cedar	48 min
Jul 2, 6:43 AM CDT	Severe Thunderstorm Warning	OAX	Cuming	32 min
Jul 2, 7:15 AM CDT	Severe Thunderstorm Warning	OAX	Burt, Cuming, Dodge	45 min

Nearby

Severe Thunderstorm Warnings in Nebraska, 2001 Every 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.