Alert archive / Iowa / Tornado Warnings in 1995

Tornado Warning 4, NWS Sioux Falls, SD

May 27, 1995Plymouth County, Iowa

NWS Sioux Falls, SD issued this tornado warning at May 27, 1995, 7:16 PM CDT for Plymouth County, Iowa. It was in force for 14 min.

The area

The counties it named.

The facts

Issued
May 27, 1995, 7:16 PM CDT (00:16 UTC)
Expired
May 27, 1995, 7:30 PM CDT
In force
14 min
Issued by
NWS Sioux Falls, SD
Area
Whole counties

County Plymouth County, IA

The nearest sounding before it

Omaha, NE (KOAX), launched 00:00Z, 0.3 hours before the alert went out and 158 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 1995-05-28Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1010 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 1995-05-28The 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
1010 J/kg
Mixed-layer CIN
-19 J/kg
Mixed-layer LCL
1189 m above ground
0-6 km bulk shear
28 kt
0-1 km storm-relative helicity
98 m²/s²
0-3 km storm-relative helicity
108 m²/s²
Significant tornado parameter
0.4
Supercell composite
2.4

Open this sounding in Storm Lab

The text

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

000 
TTAA00 KFSD 280020 COR
TORFSD
IAC149-280045-
 
BULLETIN - EBS ACTIVATION REQUESTED
TORNADO WARNING...CORRECTION FOR TIME OF REPORT
NATIONAL WEATHER SERVICE SIOUX FALLS SD
716 PM CDT SAT MAY 27 1995
 
THE NATIONAL WEATHER SERVICE IN SIOUX FALLS HAS ISSUED A
TORNADO WARNING EFFECTIVE UNTIL  745 PM CDT
FOR PEOPLE IN THE FOLLOWING LOCATION...
 
IN NORTHWEST IOWA
 
   ...CENTRAL PLYMOUTH COUNTY
 
AT 715 PM CDT DOPPLER RADAR SHOWED ROTATION OVER MERRILL AND LOCAL
SPOTTERS REPORTED ROTATION IN THE CLOUDS. STRONG WINDS WERE ALSO
REPORTED IN LE MARS. THE STORM WAS MOVING NORTH AT 10 TO 15 MPH.
 
IF YOU LIVE IN A HOME OR APARTMENT...SEEK SHELTER IN THE
INNERMOST PORTION OF THE BUILDING ON THE LOWEST FLOOR.  IF YOU LIVE
IN A MOBILE HOME...ABANDON IT FOR A STRONGER SHELTER.
 
HOLMES

The office that day

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

IssuedProductOfficeCountiesLasted
May 27, 7:34 PM CDTSevere Thunderstorm WarningFSDSioux26 min

Nearby

Tornado Warnings in Iowa, 1995Every tornado warning in 1995Tornadoes in 1995

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.