Alert archive / Nebraska / Severe Thunderstorm Warnings in 1991

Severe Thunderstorm Warning 48, NWS North Platte, NE

June 13, 1991Platte County, Nebraska

NWS North Platte, NE issued this severe thunderstorm warning at Jun 13, 1991, 10:56 PM CDT for Platte County, Nebraska. It was in force for 64 min.

The area

The counties it named.

The facts

Issued
Jun 13, 1991, 10:56 PM CDT (03:56 UTC)
Expired
Jun 14, 1991, 12:00 AM CDT
In force
64 min
Issued by
NWS North Platte, NE
Area
Whole counties

County Platte County, NE

The nearest sounding before it

Omaha, NE (KOVN), launched 00:00Z, 3.9 hours before the alert went out and 100 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 1991-06-14Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1980 joules per kilogram.LCLEL10008507005003002001001 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 1991-06-14The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 98 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
1980 J/kg
Mixed-layer CIN
-5 J/kg
Mixed-layer LCL
1429 m above ground
0-6 km bulk shear
27 kt
0-1 km storm-relative helicity
98 m²/s²
0-3 km storm-relative helicity
309 m²/s²
Significant tornado parameter
0.8
Supercell composite
9.6

Open this sounding in Storm Lab

The text

The text of this product is not in the archive. The NWS text archive before 2002 is incomplete.

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, Jun 13, 9:49 PM CDT, 1 hour 7 minutes before
NEZ006-140350-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE NORTH PLATTE NE
850 PM MDT THU JUN 13 1991

...SEVERE THUNDERSTORM WATCH FOR ARTHUR AND GRANT COUNTIES UNTIL 11 PM
   MDT...

AT 845 PM MDT...RADAR SHOWED THUNDERSTORMS WITH BRIEF HEAVY RAIN AND
POSSIBLY SMALL HAIL 15 MILES SOUTHWEST OF HYANNIS...OR 70 MILES
NORTHWEST OF NORTH PLATTE.  THE STORM WAS MOVING EAST AT 15 MPH.

THIS THUNDERSTORM WILL BE MOVING ACROSS GRANT COUNTY DURING THE NEXT
HOUR.  PERSONS IN HYANNIS AND WHITMAN CAN EXPECT BRIEF HEAVY RAIN...
SMALL HAIL...GUSTY WINDS AND DEADLY LIGHTNING WITH THIS STORM.

IF THREATENING WEATHER APPROACHES...MOVE TO A PLACE OF SHELTER.

WALAWENDER

The office that day

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

IssuedProductOfficeCountiesLasted
Jun 14, 12:03 AM CDTSevere Thunderstorm WarningLBFPlatte42 min
Jun 14, 4:32 PM CDTSevere Thunderstorm WarningLBFPierce58 min
Jun 14, 4:48 PM CDTSevere Thunderstorm WarningLBFCedar, Wayne27 min
Jun 14, 5:18 PM CDTSevere Thunderstorm WarningLBFCedar, Pierce, Wayne57 min
Jun 14, 5:57 PM CDTSevere Thunderstorm WarningLBFCedar, Madison, Pierce, Wayne78 min

Nearby

Severe Thunderstorm Warnings in Nebraska, 1991Every severe thunderstorm warning in 1991

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.