Alert archive / Nebraska / Severe Thunderstorm Warnings in 1993

Severe Thunderstorm Warning 150, NWS North Platte, NE

August 29, 1993Cedar County, Madison County, Pierce County, Nebraska

NWS North Platte, NE issued this severe thunderstorm warning at Aug 29, 1993, 7:30 PM CDT for Cedar County, Madison County, Pierce County, Nebraska. It was in force for 45 min.

The area

The counties it named.

The facts

Issued
Aug 29, 1993, 7:30 PM CDT (00:30 UTC)
Expired
Aug 29, 1993, 8:15 PM CDT
In force
45 min
Issued by
NWS North Platte, NE
Area
Whole counties

Counties Cedar County, NE, Madison County, NE, Pierce County, NE

The nearest sounding before it

Omaha, NE (KOAX), launched 00:00Z, 0.5 hours before the alert went out and 140 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 1993-08-30Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 4054 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 1993-08-30The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 172 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
4054 J/kg
Mixed-layer CIN
-7 J/kg
Mixed-layer LCL
760 m above ground
0-6 km bulk shear
29 kt
0-1 km storm-relative helicity
172 m²/s²
0-3 km storm-relative helicity
263 m²/s²
Significant tornado parameter
4.0
Supercell composite
22.5

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, Aug 29, 7:15 PM CDT, 15 minutes before
NEZ016-017-300100-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE NORTH PLATTE NE
715 PM CDT SUN AUG 29 1993

...STRONG THUNDERSTORMS WILL BE MOVING INTO SOUTHERN RED WILLOW
   COUNTY BY 725 PM CDT...

AT 710 PM CDT RADAR REVEALED AN AREA OF SCATTERED THUNDERSTORMS
ACROSS NORTH CENTRAL KANSAS WHICH WERE POISED TO ENTER SOUTHERN
RED WILLOW COUNTY.  THESE THUNDERSTORMS WERE LOCATED APPROXIMATELY
65 TO 75 MILES SOUTH OF NORTH PLATTE...OR NEAR THE KANSAS BORDER.

OTHER THUNDERSTORMS WERE OVER SOUTHERN AND EASTERN SECTIONS OF
FRONTIER COUNTY...OR FROM 40 MILES SOUTHEAST TO 45 MILES SOUTH
OF NORTH PLATTE.

PERSONS NEAR THE TOWN OF DANBURY...WHICH IS LOCATED ABOUT 66 MILES
SOUTH SOUTHEAST OF NORTH PLATTE...SHOULD PREPARE FOR THREATENING
WEATHER NOW.
>
MOVEMENT OF THE THUNDERSTORMS WAS TO THE NORTH NORTHEAST AROUND
30 MILES AN HOUR.  THE THUNDERSTORMS COULD PRODUCE LARGE HAIL...
DAMAGING WINDS...DEADLY BOLTS OF LIGHTNING AND HEAVY R&AINS.

SC

The office that day

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

IssuedProductOfficeCountiesLasted
Aug 29, 7:30 PM CDTSevere Thunderstorm WarningLBFBoone45 min
Aug 29, 8:06 PM CDTFlash Flood WarningLBFBoone3 hr
Aug 29, 10:00 PM CDTFlash Flood WarningLBFBoone, Madison, Pierce, Wayne4 hr
Aug 29, 10:00 PM CDTFlash Flood WarningLBFCedar4 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.