Alert archive / Nebraska / Severe Thunderstorm Warnings in 1993

Severe Thunderstorm Warning 2, NWS North Platte, NE

May 7, 1993Boyd County, Holt County, Nebraska

NWS North Platte, NE issued this severe thunderstorm warning at May 7, 1993, 3:37 PM CDT for Boyd County, Holt County, Nebraska. It was in force for 68 min.

The area

The counties it named.

The facts

Issued
May 7, 1993, 3:37 PM CDT (20:37 UTC)
Expired
May 7, 1993, 4:45 PM CDT
In force
68 min
Issued by
NWS North Platte, NE
Area
Whole counties

Counties Boyd County, NE, Holt County, NE

The nearest sounding before it

N. Platte/Lee Bi, NE (KLBF), launched 12:00Z, 8.6 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-pSkew-T log-p diagram, N. Platte/Lee Bi, NE at 12:00Z on 1993-05-07Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 0 joules per kilogram.LCL10008507005003002001001 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, N. Platte/Lee Bi, NE at 12:00Z on 1993-05-07The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 45 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
0 J/kg
Mixed-layer CIN
No buoyant parcel
Mixed-layer LCL
1888 m above ground
0-6 km bulk shear
42 kt
0-1 km storm-relative helicity
45 m²/s²
0-3 km storm-relative helicity
163 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 
WUUS1 KOFK 072039 RRA
SVROFK
NEC015-089-072145-
 
BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE NORFOLK NE
337 PM CDT FRI MAY 7 1993
 
THE NATIONAL WEATHER SERVICE IN NORFOLK HAS ISSUED A
SEVERE THUNDERSTORM WARNING EFFECTIVE UNTIL  445 PM CDT
FOR PEOPLE IN THE FOLLOWING LOCATIONS...
 
IN NORTH CENTRAL NEBRASKA
 
   ...BOYD COUNTY...NORTH CENTRAL HOLT COUNTY
 
WEATHER RADAR AT NORFOLK SHOWS A SEVERE THUNDERSTORM 20 MILES NORTHWEST
OF O NEILL JUST NORTHEAST OF ATKINSON.. THE STORM WAS MOVING TOWARD
SPENCER.
 
 
 
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 THUNDERSTORMS CAN PRODUCE A TORNADO WITH LITTLE OR NO WARNING.

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, 1 hour 23 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

The office that day

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

IssuedProductOfficeCountiesLasted
May 7, 4:08 PM CDTSevere Thunderstorm WarningLBFHolt52 min
May 7, 4:57 PM CDTSevere Thunderstorm WarningLBFBoyd, Holt48 min
May 7, 6:59 PM CDTSevere Thunderstorm WarningLBFWheeler46 min

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.