Alert archive / Nebraska / Severe Thunderstorm Warnings in 1999

Severe Thunderstorm Warning 221, NWS North Platte, NE

August 28, 1999Lincoln County, Nebraska

NWS North Platte, NE issued this severe thunderstorm warning at Aug 28, 1999, 5:58 PM CDT for Lincoln County, Nebraska. It was in force for 62 min. 1 report came from inside the area while it was in force.

The area

The counties it named, with what was reported inside it.

The facts

Issued: Aug 28, 1999, 5:58 PM CDT (22:58 UTC)
Expired: Aug 28, 1999, 7:00 PM CDT
In force: 62 min
Issued by: NWS North Platte, NE
Area: Whole counties

County Lincoln County, NE

The radar

The North Platte radar (KLNX), 102 km from the middle of the area, began a volume at 23:01 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.

What was reported inside it

Time	Report	Where	Remark
Aug 28, 6:00 PM CDT	Hail 0.75	North Platte, NE

NCEI Storm Data entries that began inside the alert's area while it was in force. Before 2003 the local storm report archive is thin, so this is the record of what happened rather than what was phoned in.

The watch it was issued in

The SPC watch in force over the same counties when this warning went out.

Issued	Product	Office	Lasted
Aug 28, 3:15 PM CDT	Severe Thunderstorm Watch	SPC	5 hr

The nearest sounding before it

Denver, CO (KDNR), launched 12:00Z, 11.0 hours before the alert went out and 248 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: 1 J/kg
Mixed-layer CIN: No buoyant parcel
Mixed-layer LCL: 1080 m above ground
0-6 km bulk shear: 23 kt
0-1 km storm-relative helicity: 62 m²/s²
0-3 km storm-relative helicity: 83 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 North Platte, NE wrote its last area forecast discussion before this severe thunderstorm warning went out at Aug 28, 2:50 PM CDT, 3 hours 8 minutes earlier.

Area forecast discussion, Aug 28, 2:50 PM CDT, 3 hours 8 minutes before

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In the hours before

Local storm report, Aug 28, 4:43 PM CDT, 1 hour 15 minutes before

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Local storm report, Aug 28, 4:43 PM CDT, 1 hour 15 minutes before

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Local storm report, Aug 28, 5:40 PM CDT, 18 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE  NORTH PLATTE NE
540 PM CDT SAT AUG 28 1999

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

0515 PM    7 S HERSHEY               NE   1.00 INCH HAIL
08/28/99   LINCOLN

0505 PM    7 NNW BIG SPRINGS         NE   0.75 INCH HAIL
08/28/99   DEUEL

SLM

Local storm report, Aug 28, 5:40 PM CDT, 18 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE  NORTH PLATTE NE
540 PM CDT SAT AUG 28 1999

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

0515 PM    7 S HERSHEY               NE   1.00 INCH HAIL
08/28/99   LINCOLN

0505 PM    7 NNW BIG SPRINGS         NE   0.75 INCH HAIL
08/28/99   DEUEL

SLM

The office that day

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

Issued	Product	Office	Counties	Lasted
Aug 28, 4:00 PM CDT	Severe Thunderstorm Warning	LBF	Keith	65 min
Aug 28, 4:53 PM CDT	Severe Thunderstorm Warning	LBF	Deuel	32 min
Aug 28, 4:59 PM CDT	Severe Thunderstorm Warning	LBF	Lincoln	61 min
Aug 28, 5:13 PM CDT	Severe Thunderstorm Warning	LBF	Keith	62 min
Aug 28, 5:50 PM CDT	Severe Thunderstorm Warning	LBF	Perkins	60 min
Aug 28, 6:24 PM CDT	Severe Thunderstorm Warning	LBF	Chase	61 min

Nearby

Severe Thunderstorm Warnings in Nebraska, 1999 Every severe thunderstorm warning in 1999

Sources

The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; verification from NCEI's Storm Data; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.