Alert archive / Iowa / High Wind Warnings in 2011
High Wind Warning 2, NWS Des Moines, IA
NWS Des Moines, IA issued this high wind warning at Jun 26, 2011, 9:46 PM CDT for 18 counties in Iowa. It took effect at Jun 26, 2011, 10:00 PM CDT. It was in force for 4 hr. 11 reports came from inside the area while it was in force.
The area
The counties it named, with what was reported inside it.
The facts
- Issued
- Jun 26, 2011, 9:46 PM CDT (02:46 UTC)
- In effect from
- Jun 26, 2011, 10:00 PM CDT
- Expired
- Jun 27, 2011, 2:26 AM CDT
- In force
- 4 hr
- Issued by
- NWS Des Moines, IA
Counties Audubon County, IA, Boone County, IA, Calhoun County, IA, Carroll County, IA, Crawford County, IA, Dallas County, IA, Franklin County, IA, Greene County, IA, Guthrie County, IA, Hamilton County, IA, Hardin County, IA, Humboldt County, IA, Marshall County, IA, Pocahontas County, IA, Sac County, IA, Story County, IA, Webster County, IA, Wright County, IA
The radar
The Des Moines radar (KDMX), 68 km from the middle of the area, began a volume at 02:47 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 |
|---|---|---|---|
| Jun 26, 10:00 PM CDT | NON-TSTM WND GST 63 | Carroll Airport, IA | |
| Jun 26, 10:05 PM CDT | NON-TSTM WND GST 58 | 3 Sse Somers, IA | KCCI SCHOOLNET SITE AT PRAIRIE VALLEY. |
| Jun 26, 10:05 PM CDT | NON-TSTM WND GST 69 | Carroll Airport, IA | |
| Jun 26, 10:15 PM CDT | TSTM WND GST 60 | Ese Rhodes, IA | TREE BRANCHES DOWN AS WELL. |
| Jun 26, 11:00 PM CDT | NON-TSTM WND DMG | Jefferson, IA | STREET LAMP BROKEN IN HALF. MANY TREES DOWN IN TOWN. ONE TREE ESTIMATED TO BE A FOOT AND A HALF IN DIAMETER. TIME ESTIMATED FROM OBSERVATIONS AND RADAR. |
| Jun 26, 11:01 PM CDT | NON-TSTM WND GST 55 | 1 S Jefferson, IA | 50 TO 60 MPH WIND GUSTS ESTIMATED. |
| Jun 26, 11:24 PM CDT | NON-TSTM WND GST 58 | 3 Sse Somers, IA | KCCI SCHOOLNET SITE AT PRAIRIE VALLEY. CORRECTED FOR TIME. |
| Jun 26, 11:30 PM CDT | NON-TSTM WND GST 63 | 3 Sse Somers, IA | MEASURED AT KCCI PRAIRIE VALLEY MESONET SITE. |
| Jun 27, 12:20 AM CDT | NON-TSTM WND DMG | Fort Dodge, IA | POWER OUT IN PORTIONS OF TOWN. SPOTTER OBSERVED A TREE POSSIBLY DOWN ON A POWERLINE WITH NUMEROUS TREE LIMBS IN THE STREET. SEVERAL FLASHES SEEN IN THE SKY FROM TRANSFORMERS AND POWER LINES BEING KNOCKED OUT. |
| Jun 27, 12:28 AM CDT | NON-TSTM WND GST 100 | Callender, IA | MAIL BOX POSTS BLOWN DOWN TO THE GROUND. SWING SET BLOWN THROUGH WINDOW. TREES DOWN ON HOUSES AND POWER OUT. |
| Jun 27, 1:13 AM CDT | NON-TSTM WND DMG | Duncombe, IA | TREE BRANCHES DOWN BY HIGH WIND. POWER OUT. WINDS ESTIMATED 65 TO 70 MPH. |
Local storm reports filed while the alert was in force, from inside its polygon or its counties.
The nearest sounding before it
Omaha, NE (KOAX), launched 00:00Z, 2.8 hours before the alert went out and 208 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
- 2873 J/kg
- Mixed-layer CIN
- -31 J/kg
- Mixed-layer LCL
- 501 m above ground
- 0-6 km bulk shear
- 51 kt
- 0-1 km storm-relative helicity
- 248 m²/s²
- 0-3 km storm-relative helicity
- 308 m²/s²
- Significant tornado parameter
- 6.2
- Supercell composite
- 26.5
The text
As transmitted, in the capitals the NWS used until 2016.
004 WWUS73 KDMX 270246 NPWDMX URGENT - WEATHER MESSAGE NATIONAL WEATHER SERVICE DES MOINES IA 946 PM CDT SUN JUN 26 2011 ...STRONG WINDS IN EXCESS OF 60 MPH LIKELY BEHIND THE THUNDERSTORM COMPLEX... ...DAMAGING WIND GUSTS UP TO 65 MPH ARE LIKELY AFTER THE THUNDERSTORM COMPLEX PASSES TO THE EAST. THESE WINDS WILL INITIALLY BE OUT OF THE NORTHWEST THEN SWITCH TO THE NORTHEAST BEFORE ENDING. IAZ023-033>035-044>047-057>059-270700- /O.NEW.KDMX.HW.W.0002.110627T0300Z-110627T0700Z/ POCAHONTAS-SAC-CALHOUN-WEBSTER-CRAWFORD-CARROLL-GREENE-BOONE- AUDUBON-GUTHRIE-DALLAS- INCLUDING THE CITIES OF...POCAHONTAS...SAC CITY...ROCKWELL CITY... FORT DODGE...DENISON...CARROLL...JEFFERSON...BOONE...AUDUBON... GUTHRIE CENTER...ADEL 946 PM CDT SUN JUN 26 2011 ...HIGH WIND WARNING IN EFFECT UNTIL 2 AM CDT MONDAY... THE NATIONAL WEATHER SERVICE IN DES MOINES HAS ISSUED A HIGH WIND WARNING...WHICH IS IN EFFECT UNTIL 2 AM CDT MONDAY. * TIMING...THROUGH 1 AM. THE WINDS WILL LIKELY IMPACT AREAS FROM UP TO ONE HOUR BEFORE PASSING TO THE EAST. * WINDS...WINDS UP TO 65 MPH. * IMPACTS...TREE DAMAGE WILL BE THE PRIMARY IMPACT. PRECAUTIONARY/PREPAREDNESS ACTIONS... A HIGH WIND WARNING MEANS A HAZARDOUS HIGH WIND EVENT IS EXPECTED OR OCCURRING. SUSTAINED WIND SPEEDS OF AT LEAST 40 MPH OR GUSTS OF 58 MPH OR MORE CAN LEAD TO PROPERTY DAMAGE. && $$
3 follow-up statements
353 WWUS73 KDMX 270308 NPWDMX URGENT - WEATHER MESSAGE NATIONAL WEATHER SERVICE DES MOINES IA 1008 PM CDT SUN JUN 26 2011 ...STRONG WINDS IN EXCESS OF 60 MPH LIKELY BEHIND THE THUNDERSTORM COMPLEX... ...DAMAGING WIND GUSTS UP TO 65 MPH ARE LIKELY AFTER THE THUNDERSTORM COMPLEX PASSES TO THE EAST. THESE WINDS WILL INITIALLY BE OUT OF THE NORTHWEST THEN SWITCH TO THE NORTHEAST BEFORE ENDING. IAZ036-037-048-049-270700- /O.EXA.KDMX.HW.W.0002.000000T0000Z-110627T0700Z/ HAMILTON-HARDIN-STORY-MARSHALL- INCLUDING THE CITIES OF...WEBSTER CITY...ELDORA...AMES... MARSHALLTOWN 1008 PM CDT SUN JUN 26 2011 ...HIGH WIND WARNING IN EFFECT UNTIL 2 AM CDT MONDAY... THE NATIONAL WEATHER SERVICE IN DES MOINES HAS ISSUED A HIGH WIND WARNING...WHICH IS IN EFFECT UNTIL 2 AM CDT MONDAY. * TIMING...THE WINDS WILL LIKELY IMPACT AREAS FOR UP TO ONE HOUR BEFORE PASSING TO THE EAST. * WINDS...WINDS UP TO 70 MPH. * IMPACTS...TREE DAMAGE WILL BE THE PRIMARY IMPACT ALONG WITH CROSS WINDS ON HIGHWAYS. PRECAUTIONARY/PREPAREDNESS ACTIONS... A HIGH WIND WARNING MEANS A HAZARDOUS HIGH WIND EVENT IS EXPECTED OR OCCURRING. SUSTAINED WIND SPEEDS OF AT LEAST 40 MPH OR GUSTS OF 58 MPH OR MORE CAN LEAD TO PROPERTY DAMAGE. && $$ IAZ023-033>035-044>047-057>059-270700- /O.CON.KDMX.HW.W.0002.000000T0000Z-110627T0700Z/ POCAHONTAS-SAC-CALHOUN-WEBSTER-CRAWFORD-CARROLL-GREENE-BOONE- AUDUBON-GUTHRIE-DALLAS- INCLUDING THE CITIES OF...POCAHONTAS...SAC CITY...ROCKWELL CITY... FORT DODGE...DENISON...CARROLL...JEFFERSON...BOONE...AUDUBON... GUTHRIE CENTER...ADEL 1008 PM CDT SUN JUN 26 2011 ...HIGH WIND WARNING REMAINS IN EFFECT UNTIL 2 AM CDT MONDAY... * TIMING...THE WINDS WILL LIKELY IMPACT AREAS FOR UP TO ONE HOUR BEFORE PASSING TO THE EAST. * WINDS...WINDS UP TO 70 MPH. * IMPACTS...TREE DAMAGE WILL BE THE PRIMARY IMPACT ALONG WITH CROSS WINDS ON HIGHWAYS. PRECAUTIONARY/PREPAREDNESS ACTIONS... A HIGH WIND WARNING MEANS A HAZARDOUS HIGH WIND EVENT IS EXPECTED OR OCCURRING. SUSTAINED WIND SPEEDS OF AT LEAST 40 MPH OR GUSTS OF 58 MPH OR MORE CAN LEAD TO PROPERTY DAMAGE. && $$
083 WWUS73 KDMX 270532 NPWDMX URGENT - WEATHER MESSAGE NATIONAL WEATHER SERVICE DES MOINES IA 1232 AM CDT MON JUN 27 2011 ...STRONG WINDS IN EXCESS OF 60 MPH LIKELY BEHIND THE THUNDERSTORM COMPLEX... ...DAMAGING WIND GUSTS UP TO 65 MPH ARE LIKELY AFTER THE THUNDERSTORM COMPLEX PASSES TO THE EAST. THESE WINDS WILL INITIALLY BE OUT OF THE NORTHWEST THEN SWITCH TO THE NORTHEAST BEFORE ENDING. IAZ033-044-045-057-270645- /O.CAN.KDMX.HW.W.0002.000000T0000Z-110627T0700Z/ SAC-CRAWFORD-CARROLL-AUDUBON- INCLUDING THE CITIES OF...SAC CITY...DENISON...CARROLL...AUDUBON 1232 AM CDT MON JUN 27 2011 ...HIGH WIND WARNING IS CANCELLED... THE NATIONAL WEATHER SERVICE IN DES MOINES HAS CANCELLED THE HIGH WIND WARNING. HIGH WINDS HAVE MOVED OUT OF THE AREA. OUTSIDE OF THUNDERSTORMS...ADDITIONAL HIGH WINDS ARE NOT EXPECTED. $$ IAZ024>026-270800- /O.EXB.KDMX.HW.W.0002.000000T0000Z-110627T0800Z/ HUMBOLDT-WRIGHT-FRANKLIN- INCLUDING THE CITIES OF...HUMBOLDT...CLARION...HAMPTON 1232 AM CDT MON JUN 27 2011 ...HIGH WIND WARNING IN EFFECT UNTIL 3 AM CDT EARLY THIS MORNING... THE NATIONAL WEATHER SERVICE IN DES MOINES HAS ISSUED A HIGH WIND WARNING...WHICH IS IN EFFECT UNTIL 3 AM CDT EARLY THIS MORNING. * TIMING...THE WINDS WILL LIKELY IMPACT AREAS FOR UP TO TWO HOURS BEFORE PASSING TO THE EAST. * WINDS...WINDS UP TO 70 MPH. * IMPACTS...TREE DAMAGE WILL BE THE PRIMARY IMPACT ALONG WITH CROSS WINDS ON HIGHWAYS. PRECAUTIONARY/PREPAREDNESS ACTIONS... A HIGH WIND WARNING MEANS A HAZARDOUS HIGH WIND EVENT IS EXPECTED OR OCCURRING. SUSTAINED WIND SPEEDS OF AT LEAST 40 MPH OR GUSTS OF 58 MPH OR MORE CAN LEAD TO PROPERTY DAMAGE. && $$ IAZ023-034>037-046>049-058-059-270800- /O.EXT.KDMX.HW.W.0002.000000T0000Z-110627T0800Z/ POCAHONTAS-CALHOUN-WEBSTER-HAMILTON-HARDIN-GREENE-BOONE-STORY- MARSHALL-GUTHRIE-DALLAS- INCLUDING THE CITIES OF...POCAHONTAS...ROCKWELL CITY... FORT DODGE...WEBSTER CITY...ELDORA...JEFFERSON...BOONE...AMES... MARSHALLTOWN...GUTHRIE CENTER...ADEL 1232 AM CDT MON JUN 27 2011 ...HIGH WIND WARNING NOW IN EFFECT UNTIL 3 AM CDT EARLY THIS MORNING... * TIMING...THE WINDS WILL LIKELY IMPACT AREAS FOR UP TO TWO HOURS BEFORE PASSING TO THE EAST. * WINDS...WINDS UP TO 70 MPH. * IMPACTS...TREE DAMAGE WILL BE THE PRIMARY IMPACT ALONG WITH CROSS WINDS ON HIGHWAYS. PRECAUTIONARY/PREPAREDNESS ACTIONS... A HIGH WIND WARNING MEANS A HAZARDOUS HIGH WIND EVENT IS EXPECTED OR OCCURRING. SUSTAINED WIND SPEEDS OF AT LEAST 40 MPH OR GUSTS OF 58 MPH OR MORE CAN LEAD TO PROPERTY DAMAGE. && $$
149 WWUS73 KDMX 270726 NPWDMX URGENT - WEATHER MESSAGE NATIONAL WEATHER SERVICE DES MOINES IA 226 AM CDT MON JUN 27 2011 .HIGH WINDS OVER THE AREA HAVE ENDED. THE STORM SYSTEM RESPONSIBLE FOR THE WINDS HAS NOW WEAKENED AND MOVED EAST. IAZ023>026-034>037-046>049-058-059-270830- /O.CAN.KDMX.HW.W.0002.000000T0000Z-110627T0800Z/ POCAHONTAS-HUMBOLDT-WRIGHT-FRANKLIN-CALHOUN-WEBSTER-HAMILTON- HARDIN-GREENE-BOONE-STORY-MARSHALL-GUTHRIE-DALLAS- INCLUDING THE CITIES OF...POCAHONTAS...HUMBOLDT...CLARION... HAMPTON...ROCKWELL CITY...FORT DODGE...WEBSTER CITY...ELDORA... JEFFERSON...BOONE...AMES...MARSHALLTOWN...GUTHRIE CENTER...ADEL 226 AM CDT MON JUN 27 2011 ...HIGH WIND WARNING IS CANCELLED... THE NATIONAL WEATHER SERVICE IN DES MOINES HAS CANCELLED THE HIGH WIND WARNING. WINDS OF 40 TO 60 MPH OR HIGHER OVER THE AREA HAVE ENDED. THE STORMS THAT PRODUCED WITH WINDS HAVE MOVED TO THE EAST. WINDS MAY STILL BE GUSTY AT TIMES YET TONIGHT...BUT WIND GUSTS WILL REMAIN BELOW 35 MPH. $$
The office that day
Everything else NWS Des Moines, IA issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jun 26, 7:02 PM CDT | Severe Thunderstorm Warning | DMX | Appanoose | 28 min |
| Jun 26, 7:19 PM CDT | Severe Thunderstorm Warning | DMX | Sac | 18 min |
| Jun 26, 7:45 PM CDT | Severe Thunderstorm Warning | DMX | Carroll, Crawford, Sac | 60 min |
| Jun 26, 8:09 PM CDT | Flash Flood Warning | DMX | Appanoose, Davis | 6 hr |
| Jun 26, 8:21 PM CDT | Severe Thunderstorm Warning | DMX | Calhoun, Carroll, Sac | 54 min |
| Jun 26, 8:23 PM CDT | Severe Thunderstorm Warning | DMX | Adair, Audubon, Cass, Guthrie | 67 min |
| Jun 26, 8:47 PM CDT | Severe Thunderstorm Warning | DMX | Calhoun, Greene, Webster | 58 min |
| Jun 26, 8:50 PM CDT | Tornado Warning | DMX | Carroll, Greene | 40 min |
| Jun 26, 9:03 PM CDT | River Flood Warning | DMX | Mahaska, Wapello | 4 days |
| Jun 26, 9:03 PM CDT | River Flood Warning | DMX | Wapello | 34 days |
| Jun 26, 9:03 PM CDT | River Flood Warning | DMX | Madison, Warren | 14 hr |
| Jun 26, 9:03 PM CDT | River Flood Warning | DMX | Mahaska, Marion | 37 hr |
| Jun 26, 9:03 PM CDT | River Flood Warning | DMX | Decatur | 47 hr |
| Jun 26, 9:07 PM CDT | Severe Thunderstorm Warning | DMX | Adair, Dallas, Madison | 38 min |
| Jun 26, 9:20 PM CDT | Severe Thunderstorm Warning | DMX | Boone, Hamilton, Story, Webster | 25 min |
| Jun 26, 9:34 PM CDT | Severe Thunderstorm Warning | DMX | Jasper, Madison, Marion, Polk, Story, Warren | 41 min |
| Jun 26, 9:43 PM CDT | Severe Thunderstorm Warning | DMX | Boone, Hamilton, Hardin, Story | 47 min |
| Jun 26, 9:56 PM CDT | Severe Thunderstorm Warning | DMX | Adams, Clarke, Decatur, Lucas, Ringgold, Taylor and 1 more | 64 min |
| Jun 26, 10:06 PM CDT | Severe Thunderstorm Warning | DMX | Grundy, Hardin, Marshall, Tama | 54 min |
| Jun 26, 10:08 PM CDT | Severe Thunderstorm Warning | DMX | Jasper, Mahaska, Marion, Poweshiek, Warren | 67 min |
| Jun 26, 10:29 PM CDT | Severe Thunderstorm Warning | DMX | Appanoose | 46 min |
| Jun 26, 10:42 PM CDT | Flash Flood Warning | DMX | Warren | 2 hr |
| Jun 26, 10:44 PM CDT | Severe Thunderstorm Warning | DMX | Appanoose, Decatur, Lucas, Monroe, Ringgold, Wapello and 1 more | 46 min |
| Jun 26, 11:16 PM CDT | Severe Thunderstorm Warning | DMX | Appanoose, Davis | 44 min |
| Jun 27, 12:47 AM CDT | River Flood Warning | DMX | Appanoose | 19 hr |
| Jun 27, 1:26 AM CDT | River Flood Warning | DMX | Taylor | 7 hr |
| Jun 27, 1:50 AM CDT | River Flood Warning | DMX | Appanoose, Wayne | 14 hr |
| Jun 27, 1:57 AM CDT | Areal Flood Advisory | DMX | Appanoose, Davis | 3 hr |
| Jun 27, 3:29 AM CDT | River Flood Warning | DMX | Webster | 52 hr |
| Jun 27, 5:00 AM CDT | Areal Flood Warning | DMX | Appanoose, Davis | 24 hr |
| Jun 27, 10:45 AM CDT | River Flood Warning | DMX | Madison, Warren | 9 hr |
Nearby
High Wind Warnings in Iowa, 2011Every high wind warning in 2011
Sources
The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.