Alert archive / Iowa / Severe Thunderstorm Warnings in 2006
Severe Thunderstorm Warning 255, NWS Des Moines, IA
NWS Des Moines, IA issued this severe thunderstorm warning at Jul 17, 2006, 7:08 PM CDT for Wapello County, Iowa. It was in force for 37 min. No storm report in the archive falls inside the area while it was in force.
The area
The counties it named.
The facts
- Issued
- Jul 17, 2006, 7:08 PM CDT (00:08 UTC)
- Expired
- Jul 17, 2006, 7:45 PM CDT
- In force
- 37 min
- Issued by
- NWS Des Moines, IA
- Area
- Counties, with a storm outline in the text
County Wapello County, IA
The radar
The Des Moines radar (KDMX), 134 km from the middle of the area, began a volume at 00:10 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.
The watch it was issued in
The SPC watch in force over the same counties when this warning went out.
| Issued | Product | Office | Lasted |
|---|---|---|---|
| Jul 17, 2:28 PM CDT | Severe Thunderstorm Watch | SPC | 8 hr |
The nearest sounding before it
Lincoln, IL (KILX), launched 00:00Z, 0.1 hours before the alert went out and 336 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.
- Mixed-layer CAPE
- 3557 J/kg
- Mixed-layer CIN
- -10 J/kg
- Mixed-layer LCL
- 1255 m above ground
- 0-6 km bulk shear
- 23 kt
- 0-1 km storm-relative helicity
- 26 m²/s²
- 0-3 km storm-relative helicity
- 60 m²/s²
- Significant tornado parameter
- 0.4
- Supercell composite
- 3.6
What forecasters said that day
The local office's own words before this severe thunderstorm warning went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.
NWS Des Moines, IA wrote its last area forecast discussion before this severe thunderstorm warning went out at Jul 17, 6:55 PM CDT, 13 minutes earlier.
Area forecast discussion, Jul 17, 6:55 PM CDT, 13 minutes before
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</html>Hazardous weather outlook, Jul 17, 3:04 PM CDT, 4 hours 4 minutes before
HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE DES MOINES IA 304 PM CDT MON JUL 17 2006 IAZ004>007-015>017-023>025-033>035-044-045-181115- EMMET-KOSSUTH-WINNEBAGO-WORTH-PALO ALTO-HANCOCK-CERRO GORDO- POCAHONTAS-HUMBOLDT-WRIGHT-SAC-CALHOUN-WEBSTER-CRAWFORD-CARROLL- 304 PM CDT MON JUL 17 2006 THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF CENTRAL IOWA NORTHWEST OF A WATERLOO...FORT DODGE...DENISON LINE. .DAY ONE...TONIGHT NO HAZARDOUS WEATHER IS EXPECTED AT THIS TIME. .DAYS TWO THROUGH SEVEN...TUESDAY THROUGH SUNDAY THUNDERSTORMS ARE EXPECTED TO DEVELOP TUESDAY NIGHT AND CONTINUE INTO WEDNESDAY MORNING. A FEW SEVERE STORMS ARE POSSIBLE. IN ADDITION...LOCALLY HEAVY RAINFALL IS ALSO POSSIBLE. ADDITIONAL THUNDERSTORM CHANCES WILL BE WITH US WEDNESDAY NIGHT. THERE IS THE POTENTIAL FOR SEVERE WEATHER TUESDAY NIGHT INTO EARLY WEDNESDAY. THE POTENTIAL FOR SEVERE WEATHER WITH THIS ACTIVITY HAS NOT BEEN DETERMINED AT THIS TIME FOR THE STORMS WEDNESDAY NIGHT. .SPOTTER INFORMATION STATEMENT... SPOTTER ACTIVATION MAY BE REQUIRED TUESDAY NIGHT AND WEDNESDAY. IAZ026>028-036>039-046>050-057>060-070>073-081>083-092>094-181115- FRANKLIN-BUTLER-BREMER-HAMILTON-HARDIN-GRUNDY-BLACK HAWK-GREENE- BOONE-STORY-MARSHALL-TAMA-AUDUBON-GUTHRIE-DALLAS-POLK-CASS-ADAIR- MADISON-WARREN-ADAMS-UNION-CLARKE-TAYLOR-RINGGOLD-DECATUR- 304 PM CDT MON JUL 17 2006 THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF CENTRAL IOWA SOUTHEAST OF A MASON CITY TO DENISON LINE...AND NORTHWEST OF A TAMA TO LAMONI LINE. .DAY ONE...TONIGHT THERE IS A SLIGHT RISK FOR SEVERE WEATHER INTO THE EARLY EVENING AFTER 4 PM THROUGH 7 PM. GOLF BALL SIZED HAIL AND 65 MPH WINDS ARE THE PRIMARY THREATS WITH AN ISOLATED TORNADO POSSIBLE. HEAT INDICES WILL FALL BELOW 105 BY EARLY EVENING. .DAYS TWO THROUGH SEVEN...TUESDAY THROUGH SUNDAY THERE IS A CHANCE OF THUNDERSTORMS TUESDAY NIGHT AND WEDNESDAY MORNING MAINLY NORTH OF HIGHWAY 30. A FEW SEVERE STORMS ARE POSSIBLE. IN ADDITION...LOCALLY HEAVY RAINFALL IS ALSO POSSIBLE. HOT AND HUMID CONDITIONS RETURN WEDNESDAY WITH HEAT INDICES OF 100 TO 115 DEGREES EXPECTED BEFORE A COLD FRONT BRINGS RELIEF WEDNESDAY NIGHT. .SPOTTER INFORMATION STATEMENT... SPOTTER ACTIVATION MAY BE NEEDED TODAY BETWEEN 4 PM AND 7 PM. ACTIVATION IS ALSO POSSIBLE LATE TUESDAY NIGHT AND EARLY WEDNESDAY. IAZ061-062-074-075-084>086-095>097-181115- JASPER-POWESHIEK-MARION-MAHASKA-LUCAS-MONROE-WAPELLO-WAYNE- APPANOOSE-DAVIS- 304 PM CDT MON JUL 17 2006 THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF CENTRAL IOWA SOUTHEAST OF A NEWTON TO LAMONI LINE. .DAY ONE...TONIGHT THERE IS A SLIGHT RISK FOR SEVERE WEATHER TODAY WITH THE GREATEST THREAT BETWEEN 6 PM AND 10 PM. GOLF BALL SIZED HAIL AND 70 MPH WINDS ARE THE PRIMARY THREATS. AN ISOLATED TORNADO IS ALSO POSSIBLE. HOT AND HUMID CONDITIONS WILL OCCUR AGAIN TODAY WITH HEAT INDICES OF 105 TO 115 DEGREES EXPECTED. .DAYS TWO THROUGH SEVEN...TUESDAY THROUGH SUNDAY HOT AND HUMID CONDITIONS RETURN WEDNESDAY WITH HEAT INDICES OF 100 TO 115 DEGREES EXPECTED BEFORE A COLD FRONT BRINGS RELIEF WEDNESDAY NIGHT. .SPOTTER INFORMATION STATEMENT... .SPOTTER INFORMATION STATEMENT... SPOTTER ACTIVATION MAY BE REQUIRED TODAY BETWEEN 6 PM AND 10 PM.
In the hours before
Local storm report, Jul 17, 4:50 PM CDT, 2 hours 18 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE DES MOINES IA
450 PM CDT MON JUL 17 2006
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0440 PM HAIL WATERLOO 42.49N 92.35W
07/17/2006 E3.00 INCH BLACK HAWK IA BROADCAST MEDIA
&&
SEARCYLocal storm report, Jul 17, 5:05 PM CDT, 2 hours 3 minutes before
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</html>Local storm report, Jul 17, 5:18 PM CDT, 1 hour 50 minutes before
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</html>Local storm report, Jul 17, 5:20 PM CDT, 1 hour 48 minutes before
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</html>Local storm report, Jul 17, 5:29 PM CDT, 1 hour 39 minutes before
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</html>Local storm report, Jul 17, 5:45 PM CDT, 1 hour 23 minutes before
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</html>The office that day
Everything else NWS Des Moines, IA issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 17, 7:34 PM CDT | Severe Thunderstorm Warning | DMX | Davis | 41 min |
| Jul 17, 8:10 PM CDT | Severe Thunderstorm Warning | DMX | Davis | 18 min |
Nearby
Severe Thunderstorm Warnings in Iowa, 2006Every severe thunderstorm warning in 2006
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; radar from the NEXRAD Level II archive.