Alert archive / Nebraska / Tornado Warnings in 2003

Tornado Warning 40, NWS Hastings, NE

July 20, 2003Howard County, Nebraska

NWS Hastings, NE issued this tornado warning at Jul 20, 2003, 7:08 PM CDT for Howard County, Nebraska. It was in force for 37 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: Jul 20, 2003, 7:08 PM CDT (00:08 UTC)
Expired: Jul 20, 2003, 7:45 PM CDT
In force: 37 min
Issued by: NWS Hastings, NE
Area: Counties, with a storm outline in the text

County Howard County, NE

The radar

The Grand Island radar (KUEX), 101 km from the middle of the area, began a volume at 00:08 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
Jul 20, 4:50 PM CDT	Severe Thunderstorm Watch	SPC	4 hr

The nearest sounding before it

Omaha, NE (KOAX), launched 00:00Z, 0.1 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: 4827 J/kg
Mixed-layer CIN: -30 J/kg
Mixed-layer LCL: 1616 m above ground
0-6 km bulk shear: 43 kt
0-1 km storm-relative helicity: 92 m²/s²
0-3 km storm-relative helicity: 162 m²/s²
Significant tornado parameter: 1.4
Supercell composite: 28.6

Open this sounding in Storm Lab

The text

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

345 
WFUS53 KGID 210008
TORGID
NEC093-210045-

BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE HASTINGS NE
707 PM CDT SUN JUL 20 2003

THE NATIONAL WEATHER SERVICE IN HASTINGS HAS ISSUED A

* TORNADO WARNING FOR...
  HOWARD COUNTY IN CENTRAL NEBRASKA

* UNTIL 745 PM CDT

* AT 703 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  DEVELOPING TORNADO 4 MILES SOUTH OF CUSHING...OR ABOUT 22 MILES
  NORTH OF GRAND ISLAND...MOVING SOUTH AT 30 MPH.

* THE TORNADO IS EXPECTED TO BE NEAR...
  ST. LIBORY AT 725 PM CDT...

PEOPLE IN SOUTHEASTERN HOWARD COUNTY SHOULD TAKE SHELTER IMMEDIATELY
IN A BASEMENT OR SMALL INTERIOR ROOM ON THE LOWEST FLOOR.

IF YOU ARE CAUGHT OUTSIDE...SEEK SHELTER IN A NEARBY BUILDING. AS A
LAST RESORT...SEEK SHELTER IN A DITCH OR LOW SPOT AND COVER YOUR HEAD
WITH YOUR HANDS.

LAT...LON 4128 9846 4105 9841 4105 9829 4130 9831
          4129 9846 4105 9841 4105 9829 4132 9829
$$
10

The office that day

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

Issued	Product	Office	Counties	Lasted
Jul 20, 7:11 PM CDT	Tornado Warning	GID	Hamilton, York	64 min
Jul 20, 7:32 PM CDT	Tornado Warning	GID	Merrick, Polk	28 min
Jul 20, 7:39 PM CDT	Severe Thunderstorm Warning	GID	Hall	51 min
Jul 20, 8:01 PM CDT	Severe Thunderstorm Warning	GID	Merrick	29 min
Jul 20, 8:14 PM CDT	Severe Thunderstorm Warning	GID	Hamilton, York	61 min
Jul 20, 8:26 PM CDT	Severe Thunderstorm Warning	GID	Adams, Hall	64 min
Jul 20, 8:32 PM CDT	Severe Thunderstorm Warning	GID	Clay, Fillmore	73 min
Jul 20, 9:25 PM CDT	Severe Thunderstorm Warning	GID	Adams, Webster	65 min
Jul 20, 10:30 PM CDT	Severe Thunderstorm Warning	GID	Webster	60 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.