Alert archive / Nebraska / Severe Thunderstorm Warnings in 2004

Severe Thunderstorm Warning 21, NWS North Platte, NE

May 9, 2004Holt County, Rock County, Nebraska

NWS North Platte, NE issued this severe thunderstorm warning at May 9, 2004, 6:02 PM CDT for Holt County, Rock County, Nebraska. It was in force for 58 min. 1 report came from inside the area while it was in force.

The area

The outline as issued, with what was reported inside it.

The facts

Issued: May 9, 2004, 6:02 PM CDT (23:02 UTC)
Expired: May 9, 2004, 7:00 PM CDT
In force: 58 min
Issued by: NWS North Platte, NE
Area: Counties, with a storm outline in the text

Counties Holt County, NE, Rock County, NE

The radar

The North Platte radar (KLNX), 121 km from the middle of the area, began a volume at 23:04 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
May 9, 6:31 PM CDT	HAIL 1	19 Sw Atkinson, NE

Local storm reports filed while the alert was in force, from inside its polygon or its counties.

The watch it was issued in

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

Issued	Product	Office	Lasted
May 9, 3:30 PM CDT	Severe Thunderstorm Watch	SPC	6 hr

The nearest sounding before it

N. Platte/Lee Bi, NE (KLBF), launched 12:00Z, 11.0 hours before the alert went out and 178 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: 639 J/kg
Mixed-layer CIN: -440 J/kg
Mixed-layer LCL: 1809 m above ground
0-6 km bulk shear: 26 kt
0-1 km storm-relative helicity: 191 m²/s²
0-3 km storm-relative helicity: 240 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

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

000 
WUUS53 KLBF 092302
SVRLBF
NEC089-149-100000-

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE NORTH PLATTE NE
601 PM CDT SUN MAY 9 2004

THE NATIONAL WEATHER SERVICE IN NORTH PLATTE HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  ROCK COUNTY IN NORTH CENTRAL NEBRASKA
  HOLT COUNTY IN NORTH CENTRAL NEBRASKA

* UNTIL 700 PM CDT

* AT 559 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM CAPABLE OF PRODUCING QUARTER SIZE HAIL.  THIS
  STORM WAS LOCATED 13 MILES WEST OF AMELIA...OR ABOUT 29 MILES NORTH
  OF BURWELL...AND MOVING EAST AT 20 MPH. SOUTHERN ROCK AND SOUTHERN 
  HOLT COUNTIES ARE IN THE PATH OF THIS STORM.

* THE SEVERE THUNDERSTORM WILL BE NEAR...
  AMELIA AROUND 630 PM CDT
  CHAMBERS AROUND 650 PM CDT

LAT...LON 4245 9959 4211 9961 4213 9855 4256 9868

$$

BUTTLER

The office that day

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

Issued	Product	Office	Counties	Lasted
May 8, 10:51 PM CDT	Severe Thunderstorm Warning	LBF	Boyd, Holt	39 min
May 9, 5:33 PM CDT	Severe Thunderstorm Warning	LBF	Blaine, Loup	42 min
May 9, 6:13 PM CDT	Severe Thunderstorm Warning	LBF	Blaine	47 min

Nearby

Severe Thunderstorm Warnings in Nebraska, 2004 Every severe thunderstorm warning in 2004

Sources

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