Alert archive / Iowa / Wind Advisories in 2010
Wind Advisory 18, NWS Des Moines, IA
NWS Des Moines, IA issued this wind advisory at Nov 30, 2010, 3:49 AM CST for 13 counties in Iowa. It took effect at Nov 30, 2010, 4:00 AM CST. It was in force for 11 hr.
The area
The counties it named.
The facts
- Issued
- Nov 30, 2010, 3:49 AM CST (09:49 UTC)
- In effect from
- Nov 30, 2010, 4:00 AM CST
- Expired
- Nov 30, 2010, 3:00 PM CST
- In force
- 11 hr
- Issued by
- NWS Des Moines, IA
Counties Calhoun County, IA, Carroll County, IA, Cerro Gordo County, IA, Crawford County, IA, Emmet County, IA, Hancock County, IA, Humboldt County, IA, Kossuth County, IA, Palo Alto County, IA, Pocahontas County, IA, Sac County, IA, Winnebago County, IA, Worth County, IA
The radar
The Des Moines radar (KDMX), 134 km from the middle of the area, began a volume at 09:49 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 nearest sounding before it
Minneapolis, MN (KMPX), launched 00:00Z, 9.8 hours before the alert went out and 231 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
- 0 J/kg
- Mixed-layer CIN
- No buoyant parcel
- Mixed-layer LCL
- 495 m above ground
- 0-6 km bulk shear
- 71 kt
- 0-1 km storm-relative helicity
- 105 m²/s²
- 0-3 km storm-relative helicity
- 215 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
901 WWUS73 KDMX 300949 NPWDMX URGENT - WEATHER MESSAGE NATIONAL WEATHER SERVICE DES MOINES IA 349 AM CST TUE NOV 30 2010 ...STRONG WINDS WILL MAKE FOR A COLD AND BLUSTERY DAY TODAY... A LARGE STORM SYSTEM MOVING SLOWLY ACROSS MINNESOTA AND WISCONSIN WILL PRODUCE STRONG AND GUSTY NORTHWEST WINDS FOR MUCH OF TODAY...WITH WIND SPEEDS OF 25 TO 30 MPH AND GUSTS TO NEAR 40 MPH EXPECTED AT TIMES. MUCH COLDER AIR WILL COMBINE WITH THESE WINDS TO PRODUCE THE LOWEST TEMPERATURES AND WIND CHILLS OF THE SEASON SO FAR...AND BLOWING SNOW WILL REDUCE VISIBILITY AT TIMES AS LIGHT SNOW SHOWERS MOVE THROUGH. IAZ004>007-015>017-023-024-033-034-044-045-301800- /O.NEW.KDMX.WI.Y.0018.101130T1000Z-101130T2100Z/ EMMET-KOSSUTH-WINNEBAGO-WORTH-PALO ALTO-HANCOCK-CERRO GORDO- POCAHONTAS-HUMBOLDT-SAC-CALHOUN-CRAWFORD-CARROLL- INCLUDING THE CITIES OF...ESTHERVILLE...ALGONA...FOREST CITY... NORTHWOOD...EMMETSBURG...GARNER...MASON CITY...POCAHONTAS... HUMBOLDT...SAC CITY...ROCKWELL CITY...DENISON...CARROLL 349 AM CST TUE NOV 30 2010 ...WIND ADVISORY IN EFFECT UNTIL 3 PM CST THIS AFTERNOON... THE NATIONAL WEATHER SERVICE IN DES MOINES HAS ISSUED A WIND ADVISORY...WHICH IS IN EFFECT UNTIL 3 PM CST THIS AFTERNOON. * WINDS: STRONG NORTHWEST WINDS OF 25 TO 30 MPH WITH GUSTS TO NEAR 40 MPH ARE ALREADY BEING OBSERVED ACROSS SOUTHWESTERN MINNESOTA AND PARTS OF NORTHWESTERN IOWA...AND WILL SPREAD ACROSS THE REST OF THE ADVISORY AREA EARLY THIS MORNING. THESE STRONG WINDS WILL PERSIST THROUGH THE MORNING HOURS BEFORE SLOWLY DIMINISHING LATER TODAY. * IMPACTS: THE STRONG AND GUSTY WINDS MAY MAKE DRIVING DIFFICULT...ESPECIALLY FOR HIGH PROFILE VEHICLES...AND BLOWING SNOW WILL REDUCE VISIBILITY AT TIMES AS LIGHT SNOW SHOWERS MOVE ACROSS THE AREA. DRIVERS ARE URGED TO USE EXTRA CAUTION. ALSO...THE COLDEST AIR OF THE SEASON SO FAR WILL COMBINE WITH THE WINDS TO PRODUCE WIND CHILLS IN THE SINGLE DIGITS TO NEAR ZERO AT TIMES THROUGH THE DAY. PRECAUTIONARY/PREPAREDNESS ACTIONS... A WIND ADVISORY MEANS THAT WINDS OF 30 MPH ARE EXPECTED. WINDS THIS STRONG CAN MAKE DRIVING DIFFICULT...ESPECIALLY FOR HIGH PROFILE VEHICLES. USE EXTRA CAUTION. && $$ LEE
3 follow-up statements
066 WWUS73 KDMX 301438 NPWDMX URGENT - WEATHER MESSAGE NATIONAL WEATHER SERVICE DES MOINES IA 838 AM CST TUE NOV 30 2010 ...STRONG WINDS WILL MAKE FOR A COLD AND BLUSTERY DAY... A LARGE STORM SYSTEM MOVING SLOWLY ACROSS MINNESOTA AND WISCONSIN WILL PRODUCE STRONG AND GUSTY NORTHWEST WINDS FOR MUCH OF TODAY. MUCH COLDER AIR WILL COMBINE WITH THESE WINDS TO PRODUCE THE LOWEST TEMPERATURES AND WIND CHILLS OF THE SEASON SO FAR. IAZ004>007-015>017-023-024-033-034-044-045-302100- /O.CON.KDMX.WI.Y.0018.000000T0000Z-101130T2100Z/ EMMET-KOSSUTH-WINNEBAGO-WORTH-PALO ALTO-HANCOCK-CERRO GORDO- POCAHONTAS-HUMBOLDT-SAC-CALHOUN-CRAWFORD-CARROLL- INCLUDING THE CITIES OF...ESTHERVILLE...ALGONA...FOREST CITY... NORTHWOOD...EMMETSBURG...GARNER...MASON CITY...POCAHONTAS... HUMBOLDT...SAC CITY...ROCKWELL CITY...DENISON...CARROLL 838 AM CST TUE NOV 30 2010 ...WIND ADVISORY REMAINS IN EFFECT UNTIL 3 PM CST THIS AFTERNOON... A WIND ADVISORY REMAINS IN EFFECT UNTIL 3 PM CST THIS AFTERNOON. * WINDS: STRONG NORTHWEST WINDS OF 25 TO 30 MPH WITH GUSTS TO NEAR 45 MPH HAVE BEEN ONGOING THIS MORNING AND WILL PERSIST INTO THE EARLY AFTERNOON. THE WINDS WILL GRADUALLY SUBSIDE THROUGH THE AFTERNOON AS THE STORM SYSTEM SLOWLY PULLS AWAY. * IMPACTS: THE STRONG AND GUSTY WINDS MAY MAKE DRIVING DIFFICULT...ESPECIALLY FOR HIGH PROFILE VEHICLES...AND BLOWING SNOW WILL REDUCE VISIBILITY AT TIMES AS LIGHT SNOW SHOWERS MOVE ACROSS THE AREA. DRIVERS ARE URGED TO USE EXTRA CAUTION. PRECAUTIONARY/PREPAREDNESS ACTIONS... A WIND ADVISORY MEANS THAT WINDS OF 30 MPH ARE EXPECTED OR GUSTS OF BETWEEN 45 AND 57 MPH. WINDS THIS STRONG CAN MAKE DRIVING DIFFICULT...ESPECIALLY FOR HIGH PROFILE VEHICLES. USE EXTRA CAUTION. && $$ COGIL
443 WWUS73 KDMX 301700 NPWDMX URGENT - WEATHER MESSAGE NATIONAL WEATHER SERVICE DES MOINES IA 1100 AM CST TUE NOV 30 2010 ...STRONG WINDS WILL PERSIST INTO THE AFTERNOON... IAZ004>007-015>017-023-024-033-034-044-045-302100- /O.CON.KDMX.WI.Y.0018.000000T0000Z-101130T2100Z/ EMMET-KOSSUTH-WINNEBAGO-WORTH-PALO ALTO-HANCOCK-CERRO GORDO- POCAHONTAS-HUMBOLDT-SAC-CALHOUN-CRAWFORD-CARROLL- INCLUDING THE CITIES OF...ESTHERVILLE...ALGONA...FOREST CITY... NORTHWOOD...EMMETSBURG...GARNER...MASON CITY...POCAHONTAS... HUMBOLDT...SAC CITY...ROCKWELL CITY...DENISON...CARROLL 1100 AM CST TUE NOV 30 2010 ...WIND ADVISORY REMAINS IN EFFECT UNTIL 3 PM CST THIS AFTERNOON... A WIND ADVISORY REMAINS IN EFFECT UNTIL 3 PM CST THIS AFTERNOON. * WINDS: STRONG NORTHWEST WINDS OF 25 TO 30 MPH WITH GUSTS TO NEAR 45 MPH WILL CONTINUE INTO THE EARLY AFTERNOON. HOWEVER...WINDS WILL BEGIN TO SLOWLY SUBSIDE BY LATER THIS AFTERNOON AS THE STORM SYSTEM SLOWLY PULLS AWAY. * IMPACTS: THE STRONG AND GUSTY WINDS MAY MAKE DRIVING DIFFICULT...ESPECIALLY FOR HIGH PROFILE VEHICLES...AND BLOWING SNOW WILL REDUCE VISIBILITY AT TIMES AS LIGHT SNOW SHOWERS MOVE ACROSS THE AREA. DRIVERS ARE URGED TO USE EXTRA CAUTION. PRECAUTIONARY/PREPAREDNESS ACTIONS... A WIND ADVISORY MEANS THAT WINDS OF 30 MPH ARE EXPECTED OR GUSTS OF BETWEEN 45 AND 57 MPH. WINDS THIS STRONG CAN MAKE DRIVING DIFFICULT...ESPECIALLY FOR HIGH PROFILE VEHICLES. USE EXTRA CAUTION. && $$ COGIL
119 WWUS73 KDMX 302050 NPWDMX URGENT - WEATHER MESSAGE NATIONAL WEATHER SERVICE DES MOINES IA 250 PM CST TUE NOV 30 2010 IAZ004>007-015>017-023-024-033-034-044-045-302200- /O.EXP.KDMX.WI.Y.0018.000000T0000Z-101130T2100Z/ EMMET-KOSSUTH-WINNEBAGO-WORTH-PALO ALTO-HANCOCK-CERRO GORDO- POCAHONTAS-HUMBOLDT-SAC-CALHOUN-CRAWFORD-CARROLL- INCLUDING THE CITIES OF...ESTHERVILLE...ALGONA...FOREST CITY... NORTHWOOD...EMMETSBURG...GARNER...MASON CITY...POCAHONTAS... HUMBOLDT...SAC CITY...ROCKWELL CITY...DENISON...CARROLL 250 PM CST TUE NOV 30 2010 ...WIND ADVISORY WILL EXPIRE AT 3 PM CST THIS AFTERNOON... THE WIND ADVISORY WILL EXPIRE AT 3 PM CST THIS AFTERNOON. WINDS WILL CONTINUE TO SLOWLY DECREASE THROUGH THE REST OF THE AFTERNOON AND EVENING. $$
What forecasters said that day
The local office's own words before this wind advisory 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 wind advisory went out at Nov 30, 3:32 AM CST, 17 minutes earlier.
Area forecast discussion, Nov 30, 3:32 AM CST, 17 minutes before
AREA FORECAST DISCUSSION NATIONAL WEATHER SERVICE DES MOINES IA 335 AM CST TUES NOV 30 2010 && .SHORT TERM.../TODAY/... COMPLEX FORECAST FOR TODAY WITH MANY FACTORS AND EFFECTS TO CONSIDER. LARGE LOW PRESSURE SYSTEM HAS BEGUN TO MOVE OFF TO THE NORTHEAST...CURRENTLY CENTERED JUST NORTHEAST OF THE TWIN CITIES...AND TRAILING COLD FRONT HAS SWEPT THROUGH OUR ENTIRE CWA. FIRST AS TO PRECIP...LARGE AREA OF WRAPAROUND SNOW IS EVIDENT IN RADAR IMAGERY AND SURFACE OBS STRETCHING FROM MN DOWN THE MISSOURI RIVER VALLEY TO THE IA/KS/MO TRISTATE JUNCTION AT THIS HOUR. MOST OF THE SNOW WITHIN THIS AREA IS LIGHT AND NOT ACCUMULATING HOWEVER THERE ARE TWO EXCEPTIONS. HEAVIER SNOW ACROSS SW MN HAS SO FAR HELD OUT OF OUR NW COUNTIES BUT IS VERY CLOSE. RADAR TRENDS AND MODELS INDICATE THAT THIS SNOW WILL MOVE INTO OUR NORTHERN COUNTIES WITHIN THE NEXT FEW HOURS AND PERSIST WELL INTO THE DAY...HOWEVER WITH THE PARENT LOW MOVING AWAY THERE IS SOME DOUBT AS TO HOW MUCH OF IT REALLY WILL CROSS THE MN/IA BORDER. MEANWHILE FURTHER SOUTHWEST A BAND OF ENHANCED SNOW...ASSOCIATED WITH A 500 MB VORT MAX MOVING AROUND THE LARGE GYRE ALOFT...HAS DEVELOPED ALONG THE NE/IA BORDER AND IS MOVING SE ON TRACK TO CLIP OUR SW COUNTIES IN THE NEXT FEW HOURS. REPORTS FROM OAX CWA INDICATE LIGHTLY ACCUMULATING SNOW AND BLOWING SNOW WITHIN THIS BAND. ALTHOUGH THIS FEATURE SHOULD BE RELATIVELY SHORT LIVED IT IS POSSIBLE THAT OTHER SUCH ENHANCED BANDS MAY DEVELOP EARLY THIS MORNING BEFORE THE STRONGER FORCING BEGINS TO MOVE FURTHER OFF TO THE NORTHEAST. NOW AS TO TEMPERATURES...COLD ADVECTION BEHIND THIS SYSTEM IS VERY STRONG AND THE LARGE CLOUD SHIELD ASSOCIATED WITH IT WILL PERSIST FOR MOST OF THE DAY SO IT IS HARD TO ENVISION MUCH INCREASE IN TEMPERATURES TODAY. BELIEVE 12Z TEMPS WILL BE AT OR NEAR 12-HOUR MAXES WITH TEMPERATURES FALLING OR STEADY FOR MUCH OF THE DAY. HAVE THUS GONE WITH A MAX TEMP FORECAST NEAR EXPECTED 12Z READINGS...AND ALLOWED FOR A BIT OF DAYTIME WARMING IN THE SOUTH AND SOUTHWEST BUT HELD IT NEARLY STEADY ELSEWHERE. FINALLY TO WINDS...THE PRESSURE GRADIENT ON THE BACKSIDE OF THE LOW IS VERY TIGHT AND WINDS ACROSS NW IA AND SURROUNDING STATES ARE CURRENTLY SUSTAINED AT ONLY A FEW KNOTS BELOW ADVISORY CRITERIA...WITH KDVP IN SW MN REPORTING 30 KT GUSTING TO 40 KT ATTM. WITH CAA STILL INCREASING IN THIS AREA AND MIXING EXPECTED TO INCREASE AFTER SUNRISE EVEN BENEATH THE CLOUD SHIELD EXPECT WINDS WILL STRENGTHEN FURTHER IN THE MORNING BEFORE SLOWLY DIMINISHING LATER IN THE DAY AS THE LOW CONTINUES TO MOVE OFF TO THE NORTHEAST AND THE GRADIENT LOOSENS UP A BIT. WITH WINDS EXPECTED TO EXCEED CRITERIA AT TIMES AND THE ADDED IMPACTS OF PATCHY BLOWING SNOW AND WIND CHILLS IN THE SINGLE DIGITS...WILL ISSUE A WIND ADVISORY FOR OUR NORTHWESTERN COUNTIES UNTIL 21Z TODAY. .LONG TERM.../TONIGHT THRU MONDAY/... COOL TEMPS UNDER THE INFLUENCE OF NORTHWESTERLY FLOW WITH CHANCES OF LIGHT PRECIP HEADED TOWARDS THE WEEKEND IS THE MAIN STORY FOR THE EXTENDED PERIOD. AXIS OF UPPER LEVEL LONGWAVE TROUGH WILL BE CENTERED OVER THE CWA AT 00Z WEDNESDAY...WITH HEIGHT RISES AND ASSOCIATED SURFACE HIGH PRESSURE BUILDING OVER THE MISSOURI RIVER VALLEY TONIGHT. HOWEVER DO NOT EXPECT TOO MUCH IN THE WAY OF RADIATIONAL COOLING AS SOUNDINGS INDICATE SOME RESIDUAL MOISTURE AT THE LOWER LEVELS...AND WITH WINDS REMAINING FAIRLY STRONG OVERNIGHT HAVE BUMPED UP LOW TEMPS A COUPLE OF DEGREES. A WEAK UPPER LEVEL WAVE TRAVERSES THE REGION LATE WEDNESDAY NIGHT WHICH AT THE VERY LEAST WILL RESULT IN SOME MID LEVEL CLOUDINESS. HOWEVER SOUNDINGS DEPICT A DRY LAYER IN ROUGHLY THE LOWEST 1KM SO NOT EXPECTING ANY MEASURABLE PRECIP...BUT STILL FEEL THAT OCCASIONAL FLURRIES ARE POSSIBLE. ZONAL FLOW THEN SETS UP HEADING INTO THE WEEKEND...WITH PERIODIC WEAK SHORTWAVES AND LEE SIDE CYCLOGENESIS DEVELOPING AND HEADING E/SE ACROSS THE MIDWEST. THE 30.00 ECMWF IS LESS AMPLIFIED...QUICKER...AND CONSIDERABLY COOLER THAN THE GFS...SPREADING A BAND OF FROZEN PRECIP FRIDAY NIGHT OVER CENTRAL/NE IOWA. IF THE GFS SOLUTION VERIFIES THE PRECIP WOULD LIKELY BE MIXED AND NOT BEGIN UNTIL SATURDAY MORNING. EITHER WAY ACCUMULATIONS DONT APPEAR TO BE ALL THAT IMPRESSIVE AND DUE TO THE UNCERTAINTY IN THE EXACT TIMING HAVE ONLY SLIGHT CHANCES THROUGH DAY 6. && .AVIATION... 30/06Z...FRONT IS NOW ESSENTIALLY THROUGH THE STATE. WIND IS STILL OUT OF 260 AT OTM BUT WILL SOON BE AT 290 AND INCREASING. SOUNDINGS WITH THE NEW MODEL RUNS CAME IN WITH EVEN MORE DRY AIR ALOFT FURTHER VERIFYING THAT PATCHY FZDZ WILL BE THE MAIN CONCERN THROUGH ROUGHLY 12Z. THE COLUMN DOES SATURATE THROUGH THE MORNING HOURS AND THERE WILL LIKELY BE SOME SNOW SHOWERS WHICH...WITH THE STRONG WIND...WILL LIKELY REDUCE SOME VSBYS BUT THIS WILL BE SHORT LIVED. WIND GUSTS TO 30KTS OR SO WILL BE LIKELY IN THE LATE MORNING/AFTERNOON. CONDITIONS BEGIN TO IMPROVE BY LATE AFTN BUT WIND WILL REMAIN STRONG AND GUSTY THROUGH 00Z AND AFTER THAT SHOULD STILL REMAIN AROUND 15KTS. && .DMX WATCHES/WARNINGS/ADVISORIES... WIND ADVISORY UNTIL 3 PM CST THIS AFTERNOON FOR CALHOUN-CARROLL- CERRO-GORDO-CRAWFORD-EMMET-HANCOCK-HUMBOLDT-KOSSUTH-PALO ALTO- POCAHONTAS-SAC-WINNEBAGO-WORTH. && SHORT TERM...LEE LONG TERM...BEITLICH AVIATION...FAB
Hazardous weather outlook, Nov 29, 6:40 PM CST, 9 hours 9 minutes before
HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE DES MOINES IA 640 PM CST MON NOV 29 2010 IAZ004>007-015>017-023>028-033>039-044>050-057>062-070>075-081>086- 092>097-010045- EMMET-KOSSUTH-WINNEBAGO-WORTH-PALO ALTO-HANCOCK-CERRO GORDO- POCAHONTAS-HUMBOLDT-WRIGHT-FRANKLIN-BUTLER-BREMER-SAC-CALHOUN- WEBSTER-HAMILTON-HARDIN-GRUNDY-BLACK HAWK-CRAWFORD-CARROLL-GREENE- BOONE-STORY-MARSHALL-TAMA-AUDUBON-GUTHRIE-DALLAS-POLK-JASPER- POWESHIEK-CASS-ADAIR-MADISON-WARREN-MARION-MAHASKA-ADAMS-UNION- CLARKE-LUCAS-MONROE-WAPELLO-TAYLOR-RINGGOLD-DECATUR-WAYNE-APPANOOSE- DAVIS- 640 PM CST MON NOV 29 2010 THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF CENTRAL IOWA. .DAY ONE...TONIGHT PATCHY FREEZING DRIZZLE IS POSSIBLE OVERNIGHT MAINLY NORTH OF HIGHWAY 30. .DAYS TWO THROUGH SEVEN...TUESDAY THROUGH SUNDAY NO HAZARDOUS WEATHER IS EXPECTED AT THIS TIME. .SPOTTER INFORMATION STATEMENT... SPOTTER ACTIVATION WILL NOT BE NEEDED. FAB
Nearby
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.