Alert archive / Nebraska / Severe Thunderstorm Warnings in 1993

Severe Thunderstorm Warning 7, NWS North Platte, NE

May 7, 1993Antelope County, Pierce County, Nebraska

NWS North Platte, NE issued this severe thunderstorm warning at May 7, 1993, 7:26 PM CDT for Antelope County, Pierce County, Nebraska. It was in force for 49 min.

The area

The counties it named.

The facts

Issued
May 7, 1993, 7:26 PM CDT (00:26 UTC)
Expired
May 7, 1993, 8:15 PM CDT
In force
49 min
Issued by
NWS North Platte, NE
Area
Whole counties

Counties Antelope County, NE, Pierce County, NE

The nearest sounding before it

Omaha, NE (KOAX), launched 00:00Z, 0.4 hours before the alert went out and 157 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-pSkew-T log-p diagram, Omaha, NE at 00:00Z on 1993-05-08Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1984 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Omaha, NE at 00:00Z on 1993-05-08The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 206 square meters per square second.19395878Sfc1 km3 km6 km9 kmRMLM
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
1984 J/kg
Mixed-layer CIN
-13 J/kg
Mixed-layer LCL
835 m above ground
0-6 km bulk shear
35 kt
0-1 km storm-relative helicity
206 m²/s²
0-3 km storm-relative helicity
280 m²/s²
Significant tornado parameter
2.1
Supercell composite
12.5

Open this sounding in Storm Lab

The text

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

000 
TTAA00 KOFK 080029 RRA
SVROFK
NEC003-139-080115-
 
BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE NORFOLK NE
726 PM CDT FRI MAY 7 1993
 
THE NATIONAL WEATHER SERVICE IN NORFOLK HAS ISSUED A
SEVERE THUNDERSTORM WARNING EFFECTIVE UNTIL  815 PM CDT
FOR PEOPLE IN THE FOLLOWING LOCATIONS...
 
IN NORTHEAST NEBRASKA
 
   ...ANTELOPE COUNTY...WESTERN PIERCE COUNTY
 
AT 725 PM CDT RADAR INDICATED A SEVERE THUNDERSTORM 30 MILES NORTHWEST
OF NORFOLK...OR JUST NORTHEAST OF NELIGH. THIS STORM IS MOVING TO THE
NORTH NORTHEAST AT 30 MPH. PEOPLE IN THE WARNED AREA CAN EXPECT LARGE
HAIL AND DAMAGING WINDS.
 
A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT FOR BOONE COUNTY UNTIL
8 PM AND FOR WHEELER COUNTY UNTIL 745PM.
 
PEOPLE IN THE PATH OF THIS STORM SHOULD TAKE SHELTER IMMEDIATELY.
PREPARE FOR DAMAGING WINDS...LARGE HAIL...DEADLY LIGHTNING AND VERY
HEAVY RAIN THAT CAN QUICKLY FLOOD A LOW LYING AREA.  REMEMBER...
SEVERE THUND*ERSTORMS CAN PRODUCE A TORNADO WITH LITTLE OR NO WARNING.
 
A TORNADO WATCH CONTINUES IN EFFECT UNTIL 10 PM CDT FOR ALL OF NORTH
CENTRAL AND NORTHEAST NEBRASKA.
 
BAKER

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.

In the hours before

Special weather statement, May 7, 2:14 PM CDT, 5 hours 12 minutes before
NEZ006-007-012-016-017-072015-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE NORTH PLATTE NE
215 PM CDT FRI MAY 7 1993

...SCATTERED THUNDERSTORMS DEVELOPING IN THE BROKEN BOW AREA...

AT 210 PM CDT SCATTERED THUNDERSTORMS WERE DEVELOPING ACROSS CUSTER
COUNTY OF NORTH CENTRAL NEBRASKA.  ONE OF THESE THUNDERSTORMS WAS ABOUT
5 MILES NORTHWEST OF BROKEN BOW OR ABOUT 50 MILES NORTHEAST OF NORTH
PLATTE WHILE ANOTHER WAS IN THE SARGENT AREA ABOUT 60 MILES NORTHWEST
OF GRAND ISLAND.  THESE NEWLY DEVELOPED THUNDERSTORMS ARE LIKELY TO
PRODUCE MODERATE TO BRIEF HEAVY RAIN WITH SMALL HAIL POSSIBLE AS THEY
MOVE NORTHEAST THIS AFTERNOON.

MORE THUNDERSTORMS ARE EXPECTED TO DEVELOP THIS AFTERNOON ACROSS THE
REGION WITH THE BEST CHANCE FOR THUNDERSTORMS ACROSS THE EASTERN PARTS
OF THE REGION ESPECIALLY IN CUSTER COUNTY AND FRONTIER COUNTY.  LATER
THIS AFTERNOON THERE IS THE CHANCE THAT SOME OF THESE THUNDERSTORMS MAY
BECOME SEVERE.

RESIDENTS ACROSS SOUTHWEST AND WEST CENTRAL NEBRASKA SHOULD BE AWARE OF
RAPIDLY CHANGING WEATHER CONDITIONS ALONG WITH APPROACHING
THUNDERSTORMS WHICH COULD PRODUCE SEVERE WEATHER.

MONSON
Special weather statement, May 7, 5:14 PM CDT, 2 hours 12 minutes before
NEZ006-007-012-016-017-072315-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE NORTH PLATTE NE
515 PM CDT FRI MAY 7 1993

...LONE THUNDERSTORM DEVELOPS OVER SOUTHWEST NEBRASKA...

AT 510 PM CDT A LONE THUNDERSTORM WAS LOCATED JUST SOUTH OF BENKELMAN
OR ABOUT 40 MILES NORTH OF GOODLAND KANSAS.  THIS THUNDERSTORM WILL
MOVE NORTHEAST AND SHOULD JUST CATCH THE COMMUNITY OF BENKELMAN BEFORE
MOVING OUT ONTO OPEN COUNTRY.  BRIEF HEAVY RAIN IS LIKELY WITH THIS
THUNDERSTORM AS IT MOVES NORTHEAST.

OTHER THUNDERSTORMS ARE EXPECTED TO DEVELOP THIS EVENING ACROSS
SOUTHWEST AND WEST CENTRAL NEBRASKA WITH THE THUNDERSTORMS MOVING
NORTHEAST INTO A MORE MOIST UNSTABLE AIRMASS.

RESIDENTS ACROSS SOUTH`WEST AND WEST CENTRAL NEBRASKA SHOULD BE AWARE OF
RAPIDLY CHANGING WEATHER CONDITIONS WITH APPROACHING THUNDERSTORMS.

MONSON
Special weather statement, May 7, 6:46 PM CDT, 40 minutes before
NEZ006-007-012-016-017-080015-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE NORTH PLATTE NE
545 PM MDT FRI MAY 7 1993

...LONE THUNDERSTORM CONTINUES MOVING NORTH ACROSS SOUTHWEST
   NEBRASKA...

AT 535 PM MDT A STRONG THUNDERSTORM WAS LOCATED ABOUT 10 MILES
SOUTHEAST OF IMPERIAL OR ABOUT 60 MILES SOUTHWEST OF NORTH PLATTE.
THIS THUNDERSTORM HAS INTENSIFIED A LITTLE AND IS LIKELY PRODUCING
BRIEF HEAVY RAIN. THIS THUNDERSTORM WILL MOVE JUST TO THE EAST OF
IMPERIAL.

OTHER THUNDERSTORMS WHICH HAVE BEEN DEVELOPING ACROSS NORTHEAST
COLORADO WILL BE MOVING INTO SOUTHWEST NEBRASKA BY 615 PM MDT.

THESE THUNDERSTORMS HAVE BEEN MOVING NORTH AT 25 MILES AN HOUR.
RESIDENTS ACROSS SOUTHWESTV AND WEST CENTRAL NEBRASKA SHOULD BE AWARE OF
RAPIDLY CHANGING WEATHER CONDITIONS WITH THESE APPROACHING
THUNDERSTORMS.

MONSON

The office that day

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

IssuedProductOfficeCountiesLasted
May 7, 7:20 PM CDTSevere Thunderstorm WarningLBFBoone40 min
May 7, 9:21 PM CDTSevere Thunderstorm WarningLBFColfax, Cuming39 min
May 7, 10:47 PM CDTFlash Flood WarningLBFColfax, Stanton3 hr

Nearby

Severe Thunderstorm Warnings in Nebraska, 1993Every severe thunderstorm warning in 1993

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.