Alert archive / Iowa / Severe Thunderstorm Warnings in 2000

Severe Thunderstorm Warning 113, NWS Des Moines, IA

July 2, 2000Kossuth County, Palo Alto County, Iowa

NWS Des Moines, IA issued this severe thunderstorm warning at Jul 2, 2000, 6:02 AM CDT for Kossuth County, Palo Alto County, Iowa. It was in force for 43 min. 1 report 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: Jul 2, 2000, 6:02 AM CDT (11:02 UTC)
Expired: Jul 2, 2000, 6:45 AM CDT
In force: 43 min
Issued by: NWS Des Moines, IA
Area: Whole counties; the outline is the Mesonet’s reconstruction

Counties Kossuth County, IA, Palo Alto County, IA

The radar

The Des Moines radar (KDMX), 180 km from the middle of the area, began a volume at 11:03 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

Time	Report	Where	Remark
Jul 2, 6:07 AM CDT	Hail 0.88	Graettinger, 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

Minneapolis, MN (KMPX), launched 00:00Z, 11.0 hours before the alert went out and 189 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-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

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: 1050 J/kg
Mixed-layer CIN: -207 J/kg
Mixed-layer LCL: 2046 m above ground
0-6 km bulk shear: 30 kt
0-1 km storm-relative helicity: 83 m²/s²
0-3 km storm-relative helicity: 198 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 2.7

Open this sounding in Storm Lab

The text

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

544 
WUUS53 KDMX 021102
SVRDSM
IAC109-147-021145-

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE DES MOINES IA
602 AM CDT SUN JUL 2 2000

THE NATIONAL WEATHER SERVICE IN DES MOINES HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  KOSSUTH COUNTY IN NORTH CENTRAL IOWA
  PALO ALTO COUNTY IN NORTHWEST IOWA

* UNTIL 645 AM

* AT 558 AM...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A LINE
  OF SEVERE THUNDERSTORMS FROM 7 MILES NORTHWEST OF SWEA CITY TO 7
  MILES WEST OF AYRSHIRE...OR FROM 44 MILES NORTHEAST OF SPENCER TO
  12 MILES SOUTHEAST OF SPENCER...MOVING EAST AT 20 MPH.

* SEVERE THUNDERSTORMS WILL BE...
  NEAR EMMETSBURG AROUND 610 AM
  NEAR FENTON AROUND 620 AM
  NEAR CURLEW AROUND 630 AM
  NEAR BANCROFT AROUND 640 AM
  NEAR BURT AROUND 650 AM

DAMAGING WINDS OF 60 TO 70 MILES AN HOUR ARE LIKELY IN THE WARNED
AREA.

STAY AWAY FROM WINDOWS DURING A SEVERE STORM...WIND GUSTS OVER 70 MPH
COULD BLOW THEM OUT.

LAT...LON 4350 9446 4325 9446 4325 9493 4292 9492
          4291 9398 4350 9398

CLEMMONS
NNNN

The office that day

Everything else NWS Des Moines, IA issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Jul 2, 5:35 AM CDT	Severe Thunderstorm Warning	DMX	Emmet	40 min
Jul 2, 2:53 PM CDT	Severe Thunderstorm Warning	DMX	Kossuth	37 min
Jul 2, 3:17 PM CDT	Severe Thunderstorm Warning	DMX	Humboldt	43 min
Jul 2, 3:28 PM CDT	Severe Thunderstorm Warning	DMX	Worth	47 min
Jul 2, 3:50 PM CDT	Severe Thunderstorm Warning	DMX	Pocahontas	55 min
Jul 2, 4:13 PM CDT	Severe Thunderstorm Warning	DMX	Cerro Gordo	47 min
Jul 2, 4:44 PM CDT	Severe Thunderstorm Warning	DMX	Pocahontas	26 min
Jul 2, 4:54 PM CDT	Tornado Warning	DMX	Pocahontas	36 min
Jul 2, 5:12 PM CDT	Severe Thunderstorm Warning	DMX	Calhoun, Webster	63 min

Nearby

Severe Thunderstorm Warnings in Iowa, 2000 Every severe thunderstorm warning 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.