Alert archive / South Dakota / Flash Flood Warnings in 1993

Flash Flood Warning 17, NWS Sioux Falls, SD

July 3, 1993Moody County, South Dakota

NWS Sioux Falls, SD issued this flash flood warning at Jul 3, 1993, 8:50 AM CDT for Moody County, South Dakota. It was in force for 4 hr.

The area

The counties it named.

The facts

Issued
Jul 3, 1993, 8:50 AM CDT (13:50 UTC)
Expired
Jul 3, 1993, 12:45 PM CDT
In force
4 hr
Issued by
NWS Sioux Falls, SD
Area
Whole counties

County Moody County, SD

The nearest sounding before it

Aberdeen, SD (KHON), launched 12:00Z, 1.8 hours before the alert went out and 168 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, Aberdeen, SD at 12:00Z on 1993-07-03Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 208 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, Aberdeen, SD at 12:00Z on 1993-07-03The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 54 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
208 J/kg
Mixed-layer CIN
-234 J/kg
Mixed-layer LCL
853 m above ground
0-6 km bulk shear
64 kt
0-1 km storm-relative helicity
54 m²/s²
0-3 km storm-relative helicity
238 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, Jul 3, 3:47 AM CDT, 5 hours 3 minutes before
IAZ013-020-021-031-032-043-NEZ094>096-SDZ066-041015-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE SIOUX CITY IA
347 AM CDT SUN JUL 3 1993

...SHOWERS AND THUNDERSTORMS CONTINUE ACROSS THE REGION...

AT 342 AM CDT A BAND OF SHOWERS AND THUNDERSTORMS CONTINED WEST OF A
LINE FROM PAULINA IOWA...45 MILES NORTHEAST OF SIOUX CITY TO ONAWA
IOWA...40 MILES SOUTH OF SIOUX CITY.  MOVEMENT WAS EAST AT 25 MILES
AN HOUR.

A 10 TO 15 MILE WIDE BAND OF HEAVIER RAIN WAS LOCATED FROM HINTON
THROUGH SIOUX CITY SOUTHWEST TO HOMER NEBRASKA.  HEAVIER RAINS CAN BE
EXPECTED AT KINGSLEY...MOVILLE AND SALIX IOWA THROUGH 5 AM.

HUMPHREY
Special weather statement, Jul 3, 4:31 AM CDT, 4 hours 19 minutes before
SDZ001>003-006>009-013-014-031200-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE SIOUX FALLS SD
430 AM CDT SAT JUL 3 1993

...TORNADO WATCH FOR MUCH OF WESTERN SOUTH DAKOTA HAS BEEN
CANCELLED...

THE TORNADO WATCH FOR MUCH OF WESTERN SOUTH DAKOTA HAS BEEN CANCELLED.
THUNDERSTORMS HAVE MOVED OUT OF MOST OF THE WATCH AREA AND HAVE
DECREASED IN INTENSITY.

MORE SEVERE THUNDERSTORMS ARE EXPECTED TO REDEVELOP OVER SOUTH DAKOTA
THIS AFTERNOON AND TONIGHT.

BLOOM
Special weather statement, Jul 3, 5:05 AM CDT, 3 hours 45 minutes before
SDZALL-032100-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE SIOUX FALLS SD
504 AM CDT SAT JUL 3 1993

...SEVERE WEATHER EXPECTED OVER SOUTH DAKOTA THIS AFTERNOON AND
TONIGHT...

THE NATIONAL SEVERE STORMS CENTER IS EXPECTING A WIDESPREAD OUTBREAK OF
SEVERE THUNDERSTORMS AND TORNADOES OVER THE NORTHERN PLAINS THIS
AFTERNOON AND TONIGHT. ALL OF SOUTH DAKOTA EXCEPT THE EXTREME WESTERN
PART ARE INCLUDED. THE TRISTATE AREA AROUND SIOUX FALLS IS ALSO
INCLUDED.

THUNDERSTORMS PRODUCING TORNADOES...LARGE HAIL...DAMAGING WIND AND VERY
HEAVY RAIN ARE EXPECTED TO DEVELOP OVER CENTRAL SOUTH DAKOTA THIS
AFTERNOON AND SPREAD OVER EASTERN SOUTH DAKOTA TONIGHT.

PERSONS IN THESE AREAS SH8OULD REVIEW SAFETY RULES AND LISTEN TO
RADIO...TELEVISION OR NOAA WEATHER RADIO FOR LATER STATEMENTS AND
POSSIBLY WATCHES OR WARNINGS.

BLOOM

The office that day

Everything else NWS Sioux Falls, SD issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Jul 3, 6:58 AM CDTSevere Thunderstorm WarningFSDBon Homme, Yankton54 min
Jul 3, 8:46 AM CDTFlash Flood WarningFSDLake, McCook, Minnehaha, Moody4 hr
Jul 3, 8:50 AM CDTFlash Flood WarningFSDLake, McCook, Minnehaha4 hr
Jul 3, 9:32 AM CDTFlash Flood WarningFSDCottonwood, Jackson, Murray, Nobles4 hr
Jul 3, 9:32 AM CDTFlash Flood WarningFSDLincoln, Lyon, Pipestone, Rock4 hr

Nearby

Flash Flood Warnings in South Dakota, 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.