Alert archive / Iowa / Tornado Warnings in 2000

Tornado Warning 30, NWS Des Moines, IA

October 13, 2000Palo Alto County, Pocahontas County, Iowa

NWS Des Moines, IA issued this tornado warning at Oct 13, 2000, 6:49 PM CDT for Palo Alto County, Pocahontas County, Iowa. It was in force for 26 min. 2 reports came from inside the area while it was in force.

The area

The outline the Iowa Environmental Mesonet reconstructed for it; the warning itself named whole counties, with what was reported inside it.

The facts

Issued
Oct 13, 2000, 6:49 PM CDT (23:49 UTC)
Expired
Oct 13, 2000, 7:15 PM CDT
In force
26 min
Issued by
NWS Des Moines, IA
Area
Whole counties; the outline is the Mesonet’s reconstruction

Counties Palo Alto County, IA, Pocahontas County, IA

The radar

The Des Moines radar (KDMX), 151 km from the middle of the area, began a volume at 23:50 UTC, the scan nearest the moment this went out.

Open the radar archive at this moment

The archived warnings, watches and discussions in force at that minute are drawn over the scan, this one among them.

What was reported inside it

TimeReportWhereRemark
Oct 13, 6:56 PM CDTTornado F1West Bend, IANumerous trees toppled as this tornado moved in from Pocahontas County and lifted southwest of West Bend.
Oct 13, 7:10 PM CDTThunderstorm Wind 61 EMallard, IA

NCEI Storm Data entries that began inside the alert's area while it was in force. Before 2003 the local storm report archive is thin, so this is the record of what happened rather than what was phoned in.

The nearest sounding before it

Omaha, NE (KOAX), launched 12:00Z, 11.8 hours before the alert went out and 229 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 12:00Z on 2000-10-13Temperature 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 12:00Z on 2000-10-13The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 256 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
0 J/kg
Mixed-layer CIN
No buoyant parcel
Mixed-layer LCL
1304 m above ground
0-6 km bulk shear
29 kt
0-1 km storm-relative helicity
256 m²/s²
0-3 km storm-relative helicity
286 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

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

000 
WFUS53 KDMX 132349
TORDSM

IAC147-151-140015-

BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE DES MOINES IA
649 PM CDT FRI OCT 13 2000

THE NATIONAL WEATHER SERVICE IN DES MOINES HAS ISSUED A

* TORNADO WARNING FOR...
  SOUTHEASTERN PALO ALTO COUNTY IN NORTHWEST IOWA
  NORTHEASTERN POCAHONTAS COUNTY IN NORTHWEST IOWA

* UNTIL 715 PM

* AT 645 PM...WEATHER SPOTTERS REPORTED A TORNADO OVER HAVELOCK...OR
  ABOUT 32 MILES SOUTHEAST OF SPENCER...MOVING NORTHEAST AT 25 MPH.

* THE TORNADO WILL BE...
  NEAR HAVELOCK NOW
  NEAR PLOVER AROUND 700 PM
  NEAR RODMAN AROUND 720 PM

IF YOU ARE CAUGHT OUTSIDE...GO TO A NEARBY REINFORCED BUILDING. AS A
LAST RESORT...GET 0IN A CULVERT OR DITCH AND COVER YOUR HEAD WITH YOUR
HANDS.



LAT...LON 4287 9479 4278 9462 4292 9443 4314 9449

FORSTER
NNNN

Nearby

Tornado Warnings in Iowa, 2000Every tornado warning in 2000Tornadoes in 2000

Sources

The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; verification from NCEI's Storm Data; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.