Alert archive / Nebraska / Flash Flood Warnings in 1993

Flash Flood Warning 4, NWS North Platte, NE

May 21, 1993Colfax County, Stanton County, Nebraska

NWS North Platte, NE issued this flash flood warning at May 21, 1993, 10:47 PM CDT for Colfax County, Stanton County, Nebraska. It was in force for 3 hr.

The area

The counties it named.

The facts

Issued
May 21, 1993, 10:47 PM CDT (03:47 UTC)
Expired
May 22, 1993, 1:45 AM CDT
In force
3 hr
Issued by
NWS North Platte, NE
Area
Whole counties

Counties Colfax County, NE, Stanton County, NE

The nearest sounding before it

Omaha, NE (KOAX), launched 00:00Z, 3.8 hours before the alert went out and 80 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 1993-05-22Temperature 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, Omaha, NE at 00:00Z on 1993-05-22The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 11 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
0 J/kg
Mixed-layer CIN
No buoyant parcel
Mixed-layer LCL
2256 m above ground
0-6 km bulk shear
36 kt
0-1 km storm-relative helicity
11 m²/s²
0-3 km storm-relative helicity
141 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

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 flash flood 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 21, 6:23 PM CDT, 4 hours 24 minutes before
NEZ006-012-016-220020-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE NORTH PLATTE NE
520 PM MDT FRI MAY 21 1993

...A SEVERE THUNDERSTORM WATCH CONTINUES UNTIL 10 PM MDT FOR
   PARTS OF SOUTHWEST AND WEST CENTRAL NEBRASKA...

AT 512 PM MDT...RADAR REVEALED SCATTERED SHOWERS AND THUNDERSTORMS
MEANDERING ACROSS THE NORTHEAST CORNER OF COLORADO.  NO PRECIPITATION
HAD YET BEEN DETECTED ACROSS SOUTHWEST OR WEST CENTRAL NEBRASKA.

A THUNDERSTORM WITH VERY HEAVY RAIN WAS LOCATED ABOUT 70 MILES SOUTHWEST
OF IMPERIAL...WITH ANOTHER LOCATED 90 MILES WEST OF NORTH PLATTE.
MOVEMENT WAS TO THE EAST AT 25 MILES AN HOUR.  WITH THE PRESENT SPEED
OF MOVEMENT NO PRECIPITATION IS EXPECTED TO ENTER SOUTHWEST NEBRASKA
UNTIL AFTER 600 PM MDT.

COMMUNITIES INCLUDED IN THE SEVERE THUNDERSTORM WATCH AREA ARE OGALLALA
...IMPERIAL...GRANT...BENKELMAN...ARTHUR...AND HYANNIS.  THIS SEVERE
THUNDERSTORM WATCH WILL REMAIN IN EFFECT UNTIL 10 PM MDT.

CONDITIONS ARE FAVORABLE ACROSS THE REGION FOR THE DEVELOPMENT
OF STRONG OR POSSIBLY SEVERE THUNDERSTORMS.  STAY TUNED TO
NOAA WEATHER RADIO OR YOUR LOCAL MEDIA FOR THE LATEST INFORMATION.

CARMEL
Special weather statement, May 21, 7:15 PM CDT, 3 hours 32 minutes before
NEZ006-012-016-220120-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE NORTH PLATTE NE
614 PM MDT FRI MAY 21 1993

...A SEVERE THUNDERSTORM WATCH CONTINUES UNTIL 10 PM MDT FOR
   PARTS OF SOUTHWEST AND WEST CENTRAL NEBRASKA...

AT 610 PM MDT...RADAR SHOWED SCATTERED SHOWERS AND THUNDERSTORMS
CONTINUING OVER NORTHEAST COLORADO.  NO SIGNIFICANT PRECIPITATION
HAD BEEN DETECTED ACROSS SOUTHWEST OR WEST CENTRAL NEBRASKA.

A THUNDERSTORM WITH VERY HEAVY RAIN WAS LOCATED ABOUT 40 MILES SOUTHWEST
OF IMPERIAL...AND WAS MOVING SOUTHEAST AT 25 MILES AN HOUR.

SCATTERED SHOWERS AND THUNDERSTORMS WILL BEGIN MOVING INTO THE SOUTHWEST
CORNER OF NEBRASKA BY 635 PM MDT.  SOME OF THE THUNDERSTORMS COULD
CONTAIN BRIEF HEAVY RAIN...SMALL HAIL...AND GUSTY WINDS.

COMMUNITIES INCLUDED IN THE SEVERE THUNDERSTORM WATCH AREA ARE...
OGALLALA...IMPERIAL...GRANT...BENKELMAN...ARTHUR...AND HYANNIS.
THE SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT THROUGH 10* PM MDT.

CONDITIONS WERE STILL FAVORABLE ACROSS THE REGION FOR THE DEVELOPMENT
OF STRONG OR POSSIBLY SEVERE THUNDERSTORMS.  STAY TUNED TO
NOAA WEATHER RADIO OR YOUR LOCAL MEDIA FOR THE LATEST INFORMATION.

CARMEL
Special weather statement, May 21, 8:06 PM CDT, 2 hours 41 minutes before
NEZ006-012-016-220210-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE NORTH PLATTE NE
705 PM MDT FRI MAY 21 1993

...A SEVERE THUNDERSTORM WATCH CONTINUES UNTIL 10 PM MDT FOR
   PARTS OF SOUTHWEST AND WEST CENTRAL NEBRASKA...

AT 700 PM MDT...RADAR SHOWED SCATTERED SHOWERS AND THUNDERSTORMS
WERE DEVELOPING ACROSS THE EXTREME SOUTHWEST CORNER OF NEBRASKA.
THE STRONGEST THUNDERSTORM WAS LOCATED ABOUT 25 MILES TO THE WEST
NORTHWEST OF BENKELMAN...OR ALONG THE BORDER WITH COLORADO.  THIS
THUNDERSTORM COULD CONTAIN VERY HEAVY RAIN...SMALL HAIL...AND GUSTY
WINDS...AND WAS MOVING EAST AROUND 25 MILES AN HOUR.

CONDITIONS WERE RIPE FOR RAPID THUNDERSTORM DEVELOPMENT ACROSS SOUTHWEST
NEBRASKA EARLY THIS EVENING.  IF THREATENING WEATHER APPROACHES FOLLOW
SAFETY RULES AND SEEK SAFE SHELTER.  LARGE HAIL...DAMAGING WINDS...
DANGEROUS LIGHTNING AND HEAVY RAINFALL ARE POSSIBLE IN THE WATCH AREA.
>
COMMUNITIES STILL INCLUDED IN THE SEVERE THUNDERSTORM WATCH AREA
WERE OGALLALA...IMPERIAL...GRANT...BENKELMAN...ARTHUR...AND HYANNIS.
THE SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT THROUGH 10 PM MDT.

STAY TUNED TO NOAA WEATHER RADIO OR YOUR LOCAL MEDIA FOR THE LATEST
INFORMATION.

CARMELf
Special weather statement, May 21, 9:41 PM CDT, 1 hour 6 minutes before
NEZ006-007-012-016-017-220340-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE NORTH PLATTE NE
840 PM MDT FRI MAY 21 1993

...THE SEVERE THUNDERSTORM WATCH ISSUED EARLIER FOR PARTS OF
   SOUTHWEST AND WEST CENTRAL NEBRASKA HAS BEEN CANCELLED...

AT 835 PM MDT RADAR SHOWED AN AREA OF SCATTERED SHOWERS AND
THUNDERSTORMS CONTINUING ACROSS PARTS OF WESTERN NEBRASKA.  THE
STRONGEST THUNDERSTORMS WERE LOCATED FROM 46 MILES WEST OF NORTH
PLATTE...NEAR KEYSTONE...AND EXTENDED NORTH THROUGH WESTERN ARTHUR
AND GRANT COUNTIES.  MOVEMENT CONTINUED TO THE EAST AT 25 MILES AN
HOUR.  OTHER SHOWERS AND A FEW THUNDERSTORMS WERE NOTED OVER SOUTHWEST
NEBRASKA.

THESE THUNDERSTORMS COULD STILL PRODUCE BRIEF HEAVY RAIN DANGEROUS
LIGHTNING AND GUSTY WINDS AS THEY CONTINUE MOVING EAST ACROSS THE
REGION.
SC
Special weather statement, May 21, 10:17 PM CDT, 30 minutes before
NEZ006-007-012-016-017-220425-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE NORTH PLATTE NE
1015 PM CDT FRI MAY 21 1993

...SCATTERED THUNDERSTORMS WERE LOCATED OVER WEST CENTRAL AND
   PARTS OF SOUTHWEST NEBRASKA...

AT 1010 PM CDT RADAR DETECTED AN AREA OF SCATTERED SHOWERS AND
THUNDERSTORMS OVER PARTS OF WEST CENTRAL AND SOUTHWEST NEBRASKA.
THUNDERSTORMS WITH HEAVY RAIN...DANGEROUS LIGHTNING AND GUSTY WINDS
WERE LOCATED FROM 50 MILES NORTHWEST OF NORTH PLATTE...OR JUST EAST
OF ARTHUR...EXTENDING SOUTH TO 35 MILES WEST NORTHWEST OF NORTH PLATTE
...OR 10 MILES NORTHEAST OF KEYSTONE.  MOVEMENT WAS TO THE EAST AROUND
30 MILES AN HOUR.

THESE THUNDERSTORMS COULD STILL PRODUCE BRIEF HEnAVY RAIN...DANGEROUS
LIGHTNING AND GUSTY WINDS AS THEY CONTINUE MOVING EAST ACROSS THE
REGION.
SC

The office that day

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

IssuedProductOfficeCountiesLasted
May 22, 5:09 PM CDTSevere Thunderstorm WarningLBFPerkins36 min
May 22, 6:58 PM CDTSevere Thunderstorm WarningLBFLincoln32 min

Nearby

Flash Flood Warnings in Nebraska, 1993Every flash flood 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.