Alert archive / Iowa / Severe Thunderstorm Warnings in 2010
Severe Thunderstorm Warning 55, NWS Quad Cities, IA
NWS Quad Cities, IA issued this severe thunderstorm warning at Jun 1, 2010, 7:21 PM CDT for 5 counties in Iowa. It was in force for 54 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
- Jun 1, 2010, 7:21 PM CDT (00:21 UTC)
- Expired
- Jun 1, 2010, 8:15 PM CDT
- In force
- 54 min
- Issued by
- NWS Quad Cities, IA
- Area
- Storm-based polygon
- Hail
- 1.0 in
- Wind
- 70.0 mph
Counties Henry County, IA, Jefferson County, IA, Keokuk County, IA, Van Buren County, IA, Washington County, IA
The radar
The Quad Cities radar (KDVN), 122 km from the middle of the area, began a volume at 00:22 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 |
|---|---|---|---|
| Jun 1, 6:25 PM CDT | Severe Thunderstorm Watch | SPC | 8 hr |
The nearest sounding before it
Davenport, (KDVN), launched 00:00Z, 0.4 hours before the alert went out and 129 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
- 152 J/kg
- Mixed-layer CIN
- -126 J/kg
- Mixed-layer LCL
- 2103 m above ground
- 0-6 km bulk shear
- 30 kt
- 0-1 km storm-relative helicity
- 44 m²/s²
- 0-3 km storm-relative helicity
- 41 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.6
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 Quad Cities, IA wrote its last area forecast discussion before this severe thunderstorm warning went out at Jun 1, 3:12 PM CDT, 4 hours 9 minutes earlier.
Area forecast discussion, Jun 1, 3:12 PM CDT, 4 hours 9 minutes before
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</html>Hazardous weather outlook, Jun 1, 3:59 PM CDT, 3 hours 22 minutes before
HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE QUAD CITIES IA IL 359 PM CDT TUE JUN 1 2010 IAZ040>042-051>054-063>068-076>078-087>089-098-099-ILZ001-002-007- 009-015>018-024>026-034-035-MOZ009-010-022100- BUCHANAN-DELAWARE-DUBUQUE-BENTON-LINN-JONES-JACKSON-IOWA-JOHNSON- CEDAR-CLINTON-MUSCATINE-SCOTT-KEOKUK-WASHINGTON-LOUISA-JEFFERSON- HENRY IA-DES MOINES-VAN BUREN-LEE-JO DAVIESS-STEPHENSON-CARROLL- WHITESIDE-ROCK ISLAND-HENRY IL-BUREAU-PUTNAM-MERCER-HENDERSON- WARREN-HANCOCK-MCDONOUGH-SCOTLAND-CLARK- 359 PM CDT TUE JUN 1 2010 THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF NORTH CENTRAL ILLINOIS...NORTHWEST ILLINOIS...WEST CENTRAL ILLINOIS...EAST CENTRAL IOWA...NORTHEAST IOWA...SOUTHEAST IOWA AND NORTHEAST MISSOURI. .DAY ONE...THIS AFTERNOON AND TONIGHT THERE IS A SLIGHT RISK OF SEVERE THUNDERSTORMS TONIGHT ACROSS THE ENTIRE OUTLOOK AREA. THIS EVENING...THE PRIMARY THREAT WILL BE FOR LARGE HAIL AND DAMAGING WINDS. IN ADDITION...OVERNIGHT THE STORMS MAY PRODUCE LOCALLY HEAVY RAINFALL. A WARMER AND MORE MOIST AIRMASS WILL MOVE INTO THE AREA FROM THE SOUTHWEST...SETTING UP A WARM FRONT UPON WHICH THE SHOWERS AND THUNDERSTORMS WILL FOCUS. AIRMASS PROFILES INDICATE THAT THE MAIN THREAT FOR THIS EVENING AND TONIGHT IS FOR DAMAGING WINDS AND POSSIBLY LARGE HAIL. LATER IN THE EVENING AND OVERNIGHT THE STORMS WILL SLOW DOWN AND WILL HAVE MORE MOISTURE TO WORK WITH...CHANGING THE THREAT OVER TO HEAVY RAINFALL...WITH POSSIBLE FLASH FLOODING. .DAYS TWO THROUGH SEVEN...WEDNESDAY THROUGH MONDAY SEVERE STORMS ARE POSSIBLE WEDNESDAY AND WEDNESDAY NIGHT. THE RISK OF SEVERE STORMS WILL BE GREATEST SOUTH OF INTERSTATE 80...WHERE THE STORM PREDICTION CENTER HAS PLACED A SLIGHT RISK. CONDITIONS MAY BE FAVORABLE FOR SUPERCELL THUNDERSTORMS WITH LARGE HAIL...DAMAGING WIND AND HEAVY RAINFALL IN SOUTHEAST IOWA...FAR NORTHEAST MISSOURI INTO WEST CENTRAL ILLINOIS FROM MID AFTERNOON INTO EARLY EVENING. THE MAIN SEVERE THREAT WILL LIKELY CHANGE TO DAMAGING WIND AND LOCALLY HEAVY RAINFALL WEDNESDAY NIGHT. HEAVY RAINFALL MAY LEAD TO FLASH FLOODING AND POSSIBLE RIVER FLOODING...ESPECIALLY IN LOCATIONS THAT RECEIVE REPEATED HEAVY RAINFALL EVENTS TUESDAY THROUGH WEDNESDAY NIGHT. THUNDERSTORMS ARE POSSIBLE AGAIN FRIDAY NIGHT...SATURDAY...AND SATURDAY NIGHT. IT IS TOO SOON TO DETERMINE THE POTENTIAL FOR SEVERE WEATHER. .SPOTTER INFORMATION STATEMENT... SPOTTER ACTIVATION MAY BE NEEDED TONIGHT. LE
In the hours before
Special weather statement, Jun 1, 5:58 PM CDT, 1 hour 23 minutes before
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</html>The office that day
Everything else NWS Quad Cities, IA issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jun 1, 8:13 PM CDT | Severe Thunderstorm Warning | DVN | Des Moines, Henry, Jefferson, Johnson, Keokuk, Lee and 4 more | 62 min |
| Jun 1, 10:07 PM CDT | Severe Thunderstorm Warning | DVN | Henry, Iowa, Jefferson, Johnson, Keokuk, Louisa and 2 more | 53 min |
| Jun 1, 10:46 PM CDT | Severe Thunderstorm Warning | DVN | Jefferson, Lee, Van Buren | 74 min |
| Jun 1, 11:06 PM CDT | Severe Thunderstorm Warning | DVN | Des Moines, Henry, Jefferson, Louisa, Washington | 69 min |
| Jun 2, 7:19 AM CDT | River Flood Warning | DVN | Des Moines, Henry, Lee | 13 hr |
| Jun 2, 9:31 AM CDT | River Flood Warning | DVN | Lee | 19 hr |
| Jun 1, 10:01 PM CDT | Severe Thunderstorm Warning | DVN | Henderson, Warren | 59 min |
| Jun 1, 11:32 PM CDT | Severe Thunderstorm Warning | DVN | Hancock, Henderson, Henry, McDonough, Mercer, Warren | 73 min |
| Jun 1, 11:46 PM CDT | Severe Thunderstorm Warning | DVN | Hancock, McDonough | 74 min |
| Jun 2, 1:12 AM CDT | Special Weather Statement | DVN | Henry, Rock Island | 2 hr |
| Jun 2, 1:14 AM CDT | Special Weather Statement | DVN | Henry, Rock Island | 2 hr |
| Jun 2, 1:57 AM CDT | Special Weather Statement | DVN | Bureau, Putnam | 48 min |
| Jun 2, 12:46 PM CDT | River Flood Warning | DVN | Hancock, McDonough | 21 hr |
Nearby
Severe Thunderstorm Warnings in Iowa, 2010Every severe thunderstorm warning in 2010
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.