Alert archive / Nebraska / Severe Thunderstorm Warnings in 1994

Severe Thunderstorm Warning 9, NWS North Platte, NE

May 22, 1994Chase County, Nebraska

NWS North Platte, NE issued this severe thunderstorm warning at May 22, 1994, 6:12 PM MDT for Chase County, Nebraska. It was in force for 48 min.

The area

The counties it named.

The facts

Issued
May 22, 1994, 6:12 PM MDT (00:12 UTC)
Expired
May 22, 1994, 7:00 PM MDT
In force
48 min
Issued by
NWS North Platte, NE
Area
Whole counties

County Chase County, NE

The nearest sounding before it

N. Platte/Lee Bi, NE (KLBF), launched 00:00Z, 0.2 hours before the alert went out and 114 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 00:00Z on 1994-05-23Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1619 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, N. Platte/Lee Bi, NE at 00:00Z on 1994-05-23The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 13 square meters per square second.193958Sfc1 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
1619 J/kg
Mixed-layer CIN
-46 J/kg
Mixed-layer LCL
1859 m above ground
0-6 km bulk shear
18 kt
0-1 km storm-relative helicity
13 m²/s²
0-3 km storm-relative helicity
144 m²/s²
Significant tornado parameter
0.0
Supercell composite
2.2

Open this sounding in Storm Lab

The text

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

000 
WUUS1 KLBF 230012 RRA
SVRLBF
NEC029-230100-

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING 
NATIONAL WEATHER SERVICE NORTH PLATTE NE
612 PM MDT SUN MAY 22 1994

THE NATIONAL WEATHER SERVICE HAS ISSUED A SEVERE THUNDERSTORM 
WARNING EFFECTIVE UNTIL 700 PM MDT FOR PEOPLE IN THE FOLLOWING 
COUNTY

   IN THE SOUTHWEST PART OF NEBRASKA
      CENTRAL AND NORTHERN CHASE

AT 610 PM MDT RADAR INDICATED A SEVERE THUNDERSTORM 5 MILES
NORTHEAST OF IMPERIAL OR ABOUT 50 MILES SOUTHWEST OF NORTH PLATTE.
THIS STORM IS MOVING VERY SLOWLY NORTH NORTHEAST AND IS LIKELY
PRODUCING SOME STREET FLOODING ALONG WITH SOME LARGE HAIL.

IF YOU ARE IN THE AREA THREATENED BY THE STORM...GO TO A REINFORCED
SHELTER AND PREPARE FOR STRONG DAMAGING WIND...LARGE HAIL...VERY
HEAVY RAIN...AND DEADLY LIGHTNING.

REMEMBER...SEVERE THUNDERSTORMS CAN AND OCCASIONALLY DO PRODUCE A
TORNADO WITH LITTLE OR NO ADVANCE WARNING SO BE ON THE LOOKOUT!!

 MONSON 0011Z

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 22, 5:19 PM MDT, 53 minutes before
NEZ069-070-230015-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE NORTH PLATTE NE
617 PM CDT (517 PM MDT) SUN MAY 22 1994

...STRONG THUNDERSTORM IN THE IMPERIAL AREA...

A VERY STRONG THUNDERSTORM WAS LOCATED OVER IMPERIAL AND JUST TO THE
NORTH AND EAST OF IMPERIAL.  THIS THUNDERSTORM IS LIKELY PRODUCING VERY
HEAVY RAIN AS IT HAS SHOWN VERY LITTLE MOVEMENT.  ALONG WITH THE HEAVY R
NSMALL HAIL IS LIKELY WITH THIS STORM.

IMPERIAL IS ABOU"T 55 MILES SOUTHWEST OF NORTH PLATTE.

RESIDENTS OF IMPERIAL SHOULD BE PREPARED TO TAKE COVER IF THIS STORM
CONTINUES TO INTENSIFY.  SOME STREET FLOODING IS POSSIBLE IN TOWN ALONG
WITH DEADLY LIGHTNING.

MONSON
Special weather statement, May 22, 5:22 PM MDT, 50 minutes before
NEZ069-070-230015-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE NORTH PLATTE NE
617 PM CDT (517 PM MDT) SUN MAY 22 1994

...STRONG THUNDERSTORM IN THE IMPERIAL AREA...

A VERY STRONG THUNDERSTORM WAS LOCATED OVER IMPERIAL AND JUST TO THE
NORTH AND EAST OF IMPERIAL.  THIS THUNDERSTORM IS LIKELY PRODUCING VERY
HEAVY RAIN AS IT HAS SHOWN VERY LITTLE MOVEMENT.  ALONG WITH THE HEAVY
RAIN SMALL HAIL IS LIKELY WITH THIS STORM.

IMPERIAL IS ABOUT *55 MILES SOUTHWEST OF NORTH PLATTE.

RESIDENTS OF IMPERIAL SHOULD BE PREPARED TO TAKE COVER IF THIS STORM
CONTINUES TO INTENSIFY.  SOME STREET FLOODING IS POSSIBLE IN TOWN ALONG
WITH DEADLY LIGHTNING.

MONSON
Special weather statement, May 22, 5:55 PM MDT, 17 minutes before
NEZ005-230100-

SPECIAL WEATHER STATEMENT...CORRECTED
NATIONAL WEATHER SERVICE VALENTINE NE
ISSUED BY SCOTTSBLUFF NE
555 PM MDT SUN MAY 22 1994

...STRONG THUNDERSTORMS HAVE MOVED INTO CHERRY COUNTY...

AT 553 PM MDT...STRONG THUNDERSTORMS WERE OVER THE WESTERN PART OF
CHERRY COUNTY.  THE STORMS WERE 50 MILES WEST OF VALENTINE...OR 20
MILES SOUTH OF MERRIMAN.

THE STORMS WERE MOVING NORTHEAST AT 25 MPH.

AT SIGNS OF AN IMPENDING STORM...TOWERING THUNDERHEADS...DARKENING
SKIES...LIGHTNING AND INCREASING WINDS...MOVE TO A PLACE OF SAFETY.
KYLE

The office that day

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

IssuedProductOfficeCountiesLasted
May 23, 5:07 PM MDTTornado WarningLBFGrant38 min

Nearby

Severe Thunderstorm Warnings in Nebraska, 1994Every severe thunderstorm warning in 1994

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.