Alert archive / Nebraska / Severe Thunderstorm Warnings in 1987

Severe Thunderstorm Warning 83, NWS North Platte, NE

August 19, 19875 counties in Nebraska

NWS North Platte, NE issued this severe thunderstorm warning at Aug 19, 1987, 11:10 AM CDT for 5 counties in Nebraska. It was in force for 50 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 19, 1987, 11:10 AM CDT (16:10 UTC)
Expired: Aug 19, 1987, 12:00 PM CDT
In force: 50 min
Issued by: NWS North Platte, NE
Area: Whole counties

Counties Colfax County, NE, Cuming County, NE, Madison County, NE, Platte County, NE, Stanton County, NE

The radar

The WSR-88D network and its archive begin in 1991, so there is no radar volume for this alert.

What was reported inside it

Time	Report	Where	Remark
Aug 19, 11:40 AM CDT	Hail 1.75	Colfax, 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. Storm Data before 1996 records only tornadoes, thunderstorm wind and hail.

The nearest sounding before it

Omaha, NE (KOAX), launched 12:00Z, 4.2 hours before the alert went out and 88 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: 3585 m above ground
0-6 km bulk shear: 43 kt
0-1 km storm-relative helicity: -17 m²/s²
0-3 km storm-relative helicity: 118 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 
TTAA00 KOMA 191620 COR
SVROFK
NEC141-119-037-167-191700-

BULLETIN - IMMEDIATE BROADCAST REQUESTED ... CORRECTION TO INCLUDE
SEVERE THUNDERSTORM WARNING                      CUMING COUNTY AS WELL
NATIONAL WEATHER SERVICE NORFOLK NE
1110 AM CDT WED AUG 19 1987

THE NATIONAL WEATHER SERVICE HAS ISSUED A SEVERE THUNDERSTORM WARNING
EFFECTIVE UNTIL NOON CDT FOR PEOPLE IN THE FOLLOWING COUNTIES...

IN NORTHEAST NEBRASKA
          ...PLATTE...SOUTHERN MADISON...COLFAX
          ...SOUTHERN STANTON...AND CUMING

RADAR SHOWED A SEVERE THUNDERSTORM 10 TO 15 SOUTH OF NORFOLK MOVING
SOUTHEAST AT 25 MPH.  WIND GUSTS TO 65 MPH WERE REPORTED AT MADISON.

WHEN THUNDERSTORMS ARE OCCURRING...PEOPLE SHOULD MOVE INSIDE A
STRONG BUILDING.  DO NOT STAND BY WINDOWS.  DON'T USE TELEPHONES
OR ELECTRICAL APPLIANCES UNLESS IN AN EMERGENCY UNTIL THE STORM
HAS PASSED.  MOTORISTS SHOULD NOT DRIVE INTO LOW WATER CROSSINGS.

SMITH

The office that day

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

Issued	Product	Office	Counties	Lasted
Aug 19, 8:27 AM CDT	Severe Thunderstorm Warning	LBF	Boone, Platte	63 min
Aug 19, 9:33 AM CDT	Severe Thunderstorm Warning	LBF	Colfax, Platte	17 min
Aug 19, 10:30 AM CDT	Severe Thunderstorm Warning	LBF	Madison, Stanton	45 min

Nearby

Severe Thunderstorm Warnings in Nebraska, 1987 Every severe thunderstorm warning in 1987

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.