Alert archive / Nebraska / Tornado Warnings in 2003

Tornado Warning 9, NWS North Platte, NE

May 13, 2003Boyd County, Holt County, Nebraska

NWS North Platte, NE issued this tornado warning at May 13, 2003, 2:45 PM CDT for Boyd County, Holt County, Nebraska. It was in force for 45 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: May 13, 2003, 2:45 PM CDT (19:45 UTC)
Expired: May 13, 2003, 3:30 PM CDT
In force: 45 min
Issued by: NWS North Platte, NE
Area: Counties, with a storm outline in the text

Counties Boyd County, NE, Holt County, NE

The radar

The Sioux Falls radar (KFSD), 176 km from the middle of the area, began a volume at 19:47 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
May 13, 1:45 PM CDT	Severe Thunderstorm Watch	SPC	5 hr

The nearest sounding before it

Aberdeen, SD (KABR), launched 12:00Z, 7.8 hours before the alert went out and 229 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: 2177 m above ground
0-6 km bulk shear: 40 kt
0-1 km storm-relative helicity: 44 m²/s²
0-3 km storm-relative helicity: 197 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 
WFUS53 KLBF 131945
TORLBF
NEC015-089-132030-

BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE NORTH PLATTE NE
244 PM CDT TUE MAY 13 2003

THE NATIONAL WEATHER SERVICE IN NORTH PLATTE HAS ISSUED A

* TORNADO WARNING FOR...
  EASTERN BOYD COUNTY IN NORTH CENTRAL NEBRASKA
  NORTHEASTERN HOLT COUNTY IN NORTH CENTRAL NEBRASKA

* UNTIL 330 PM CDT

* AT 242 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED
  THE MOST DANGEROUS PART OF A SEVERE THUNDERSTORM WITH STRONG
  ROTATION 6 MILES SOUTH OF SPENCER...MOVING EAST AT 35 MPH. THIS
  STORM IS CAPABLE OF PRODUCING A TORNADO AT ANY TIME.

* THE DEVELOPING TORNADO WILL BE NEAR...
  2 MILES SOUTH OF BRISTOW AROUND 255 PM CDT
  OVER LYNCH AROUND 305 PM CDT

LAT...LON 4298 9890 4264 9892 4263 9832 4288 9834
          4297 9854

$$

JWS

The office that day

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

Issued	Product	Office	Counties	Lasted
May 13, 1:03 PM CDT	Severe Thunderstorm Warning	LBF	Keya Paha	57 min
May 13, 1:58 PM CDT	Severe Thunderstorm Warning	LBF	Boyd, Garfield	62 min
May 13, 1:59 PM CDT	Severe Thunderstorm Warning	LBF	Holt	46 min
May 13, 2:24 PM CDT	Severe Thunderstorm Warning	LBF	Wheeler	51 min
May 13, 2:31 PM CDT	Severe Thunderstorm Warning	LBF	Boyd, Holt	29 min
May 13, 2:50 PM CDT	Severe Thunderstorm Warning	LBF	Holt	40 min
May 13, 3:33 PM CDT	Severe Thunderstorm Warning	LBF	Holt	57 min
May 13, 4:01 PM CDT	Severe Thunderstorm Warning	LBF	Wheeler	44 min
May 13, 4:06 PM CDT	Severe Thunderstorm Warning	LBF	Garfield	39 min
May 13, 4:44 PM CDT	Severe Thunderstorm Warning	LBF	Wheeler	31 min

Nearby

Tornado Warnings in Nebraska, 2003 Every tornado warning in 2003 Tornadoes in 2003

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.