Alert archive / Iowa / Blizzard Watches in 2014
Blizzard Watch 2, NWS Des Moines, IA
NWS Des Moines, IA issued this blizzard watch at Feb 18, 2014, 4:06 AM CST for 33 counties in Iowa. It took effect at Feb 20, 2014, 6:00 AM CST. It was in force for .
The area
The counties it named.
The facts
- Issued
- Feb 18, 2014, 4:06 AM CST (10:06 UTC)
- In effect from
- Feb 20, 2014, 6:00 AM CST
- Expired
- Feb 19, 2014, 3:43 PM CST
- In force
- Issued by
- NWS Des Moines, IA
All 33 counties
Adair County, IA, Audubon County, IA, Black Hawk County, IA, Boone County, IA, Bremer County, IA, Butler County, IA, Carroll County, IA, Cerro Gordo County, IA, Crawford County, IA, Dallas County, IA, Franklin County, IA, Greene County, IA, Grundy County, IA, Guthrie County, IA, Hamilton County, IA, Hancock County, IA, Hardin County, IA, Humboldt County, IA, Jasper County, IA, Kossuth County, IA, Madison County, IA, Marion County, IA, Marshall County, IA, Polk County, IA, Poweshiek County, IA, Sac County, IA, Story County, IA, Tama County, IA, Warren County, IA, Webster County, IA, Winnebago County, IA, Worth County, IA, Wright County, IA
The radar
The Des Moines radar (KDMX), 57 km from the middle of the area, began a volume at 10:11 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
Omaha, NE (KOAX), launched 00:00Z, 10.1 hours before the alert went out and 246 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
- 2615 m above ground
- 0-6 km bulk shear
- 64 kt
- 0-1 km storm-relative helicity
- 136 m²/s²
- 0-3 km storm-relative helicity
- 221 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
884 WWUS43 KDMX 181006 WSWDMX URGENT - WINTER WEATHER MESSAGE NATIONAL WEATHER SERVICE DES MOINES IA 406 AM CST TUE FEB 18 2014 ...SIGNIFICANT WINTER SYSTEM TO IMPACT PORTIONS OF CENTRAL IOWA THURSDAY... .PRECIPITATION WILL OVERSPREAD THE AREA WEDNESDAY NIGHT INITIALLY AS RAIN BEFORE SWITCHING TO A WINTRY MIX THEN ALL SNOW BY THURSDAY MORNING. A PERIOD OF MODERATE TO HEAVY SNOW FOLLOWED BY VERY STRONG AND GUSTY NORTHWEST WINDS WILL LEAD TO THE POTENTIAL FOR BLIZZARD CONDITIONS ESPECIALLY THURSDAY AFTERNOON AND EVENING. IAZ005>007-016-017-024>028-035>039-046>050-058>061-071>074-181815- /O.NEW.KDMX.BZ.A.0002.140220T1200Z-140221T1200Z/ KOSSUTH-WINNEBAGO-WORTH-HANCOCK-CERRO GORDO-HUMBOLDT-WRIGHT- FRANKLIN-BUTLER-BREMER-WEBSTER-HAMILTON-HARDIN-GRUNDY-BLACK HAWK- GREENE-BOONE-STORY-MARSHALL-TAMA-GUTHRIE-DALLAS-POLK-JASPER-ADAIR- MADISON-WARREN-MARION- INCLUDING THE CITIES OF...ALGONA...FOREST CITY...LAKE MILLS... NORTHWOOD...MANLY...GARNER...BRITT...KANAWHA...MASON CITY... CLEAR LAKE...HUMBOLDT...EAGLE GROVE...CLARION...BELMOND... HAMPTON...PARKERSBURG...CLARKSVILLE...SHELL ROCK...GREENE... APLINGTON...ALLISON...DUMONT...WAVERLY...FORT DODGE... WEBSTER CITY...IOWA FALLS...ELDORA...ACKLEY...GRUNDY CENTER... REINBECK...CONRAD...DIKE...WELLSBURG...WATERLOO...CEDAR FALLS... JEFFERSON...BOONE...AMES...MARSHALLTOWN...TAMA...TOLEDO...TRAER... DYSART...GLADBROOK...GUTHRIE CENTER...PANORA...BAYARD...CASEY... PERRY...WAUKEE...ADEL...DES MOINES...NEWTON...GREENFIELD... STUART...ADAIR...FONTANELLE...WINTERSET...EARLHAM...INDIANOLA... NORWALK...CARLISLE...PELLA...KNOXVILLE 406 AM CST TUE FEB 18 2014 ...BLIZZARD WATCH IN EFFECT FROM THURSDAY MORNING THROUGH LATE THURSDAY NIGHT... THE NATIONAL WEATHER SERVICE IN DES MOINES HAS ISSUED A BLIZZARD WATCH...WHICH IS IN EFFECT FROM THURSDAY MORNING THROUGH LATE THURSDAY NIGHT. * TIMING...THE PRECIPITATION WILL SWITCH TO SNOW THURSDAY MORNING AND MAY BECOME HEAVY AT TIMES WITH SNOW FALL RATES OF ONE TO TWO INCHES PER HOUR POSSIBLE FOR A BRIEF PERIOD. VERY STRONG NORTHWEST WINDS WILL DEVELOP BY THURSDAY AFTERNOON AND EVENING AND MAY CREATE BLIZZARD CONDITIONS. * STORM TOTAL SNOW/ICE ACCUMULATIONS...3 TO 7 INCHES OF SNOW IS EXPECTED. MINOR ICE ACCUMULATIONS MAY OCCUR. * WINDS/VISIBILITY...THE WIND WILL BE LIGHT INITIALLY WITH THIS SYSTEM AS THE PRECIPITATION CHANGES TO SNOW. THE WIND WILL QUICKLY INTENSIFY AS IT BECOMES NORTHWEST AT 25 TO 35 MPH WITH GUSTS OVER 50 MPH POSSIBLE THURSDAY AFTERNOON AND EVENING. * IMPACTS...IN ADDITION TO THE BLIZZARD POTENTIAL...A BAND OF WET AND HEAVY SNOW IS ALSO POSSIBLE. THE WET SNOW MAY BE HEAVY ENOUGH TO CAUSE TREE DAMAGE ONCE THE WIND INCREASES AND COULD LEAD TO DOWNED POWER LINES. PRECAUTIONARY/PREPAREDNESS ACTIONS... A BLIZZARD WATCH MEANS THERE IS A POTENTIAL FOR FALLING AND/OR BLOWING SNOW WITH STRONG WINDS AND EXTREMELY POOR VISIBILITIES. THIS CAN LEAD TO WHITEOUT CONDITIONS AND MAKE TRAVEL VERY DANGEROUS. && $$ DONAVON
6 follow-up statements
366 WWUS43 KDMX 181554 WSWDMX URGENT - WINTER WEATHER MESSAGE NATIONAL WEATHER SERVICE DES MOINES IA 954 AM CST TUE FEB 18 2014 ...SIGNIFICANT WINTER SYSTEM TO IMPACT PORTIONS OF CENTRAL IOWA THURSDAY... .A RAPIDLY STRENGTHENING STORM IS EXPECTED TO AFFECT CENTRAL IOWA FROM LATE WEDNESDAY NIGHT THROUGH EARLY FRIDAY. PRECIPITATION WILL OVERSPREAD THE AREA WEDNESDAY NIGHT INITIALLY AS RAIN BEFORE SWITCHING TO A WINTRY MIX THEN TO ALL SNOW BY THURSDAY MORNING. A PERIOD OF MODERATE TO HEAVY SNOW FOLLOWED BY VERY STRONG AND GUSTY NORTHWEST WINDS WILL LEAD TO THE POTENTIAL FOR BLIZZARD CONDITIONS ESPECIALLY THURSDAY AFTERNOON AND EVENING. IAZ005>007-016-017-024>028-035>039-046>050-058>061-071>074-190000- /O.CON.KDMX.BZ.A.0002.140220T1200Z-140221T1200Z/ KOSSUTH-WINNEBAGO-WORTH-HANCOCK-CERRO GORDO-HUMBOLDT-WRIGHT- FRANKLIN-BUTLER-BREMER-WEBSTER-HAMILTON-HARDIN-GRUNDY-BLACK HAWK- GREENE-BOONE-STORY-MARSHALL-TAMA-GUTHRIE-DALLAS-POLK-JASPER-ADAIR- MADISON-WARREN-MARION- INCLUDING THE CITIES OF...ALGONA...FOREST CITY...LAKE MILLS... NORTHWOOD...MANLY...GARNER...BRITT...KANAWHA...MASON CITY... CLEAR LAKE...HUMBOLDT...EAGLE GROVE...CLARION...BELMOND... HAMPTON...PARKERSBURG...CLARKSVILLE...SHELL ROCK...GREENE... APLINGTON...ALLISON...DUMONT...WAVERLY...FORT DODGE... WEBSTER CITY...IOWA FALLS...ELDORA...ACKLEY...GRUNDY CENTER... REINBECK...CONRAD...DIKE...WELLSBURG...WATERLOO...CEDAR FALLS... JEFFERSON...BOONE...AMES...MARSHALLTOWN...TAMA...TOLEDO...TRAER... DYSART...GLADBROOK...GUTHRIE CENTER...PANORA...BAYARD...CASEY... PERRY...WAUKEE...ADEL...DES MOINES...NEWTON...GREENFIELD... STUART...ADAIR...FONTANELLE...WINTERSET...EARLHAM...INDIANOLA... NORWALK...CARLISLE...PELLA...KNOXVILLE 954 AM CST TUE FEB 18 2014 ...BLIZZARD WATCH REMAINS IN EFFECT FROM THURSDAY MORNING THROUGH LATE THURSDAY NIGHT... * TIMING...THE PRECIPITATION WILL SWITCH TO SNOW THURSDAY MORNING AND MAY BECOME HEAVY AT TIMES WITH SNOW FALL RATES OF ONE TO TWO INCHES PER HOUR POSSIBLE FOR A BRIEF PERIOD. VERY STRONG NORTHWEST WINDS WILL DEVELOP BY THURSDAY AFTERNOON AND EVENING AND MAY CREATE BLIZZARD CONDITIONS. * STORM TOTAL SNOW/ICE ACCUMULATIONS...3 TO 7 INCHES OF SNOW IS EXPECTED. MINOR ICE ACCUMULATIONS MAY OCCUR. * WINDS/VISIBILITY...THE WIND WILL BE LIGHT INITIALLY WITH THIS SYSTEM AS THE PRECIPITATION CHANGES TO SNOW. THE WIND WILL QUICKLY INTENSIFY AS IT BECOMES NORTHWEST AT 25 TO 35 MPH WITH GUSTS OVER 50 MPH POSSIBLE THURSDAY AFTERNOON AND EVENING. * IMPACTS...IN ADDITION TO THE BLIZZARD POTENTIAL...A BAND OF WET AND HEAVY SNOW IS ALSO POSSIBLE. THE WET SNOW MAY BE HEAVY ENOUGH TO CAUSE TREE DAMAGE ONCE THE WIND INCREASES AND COULD LEAD TO DOWNED POWER LINES. PRECAUTIONARY/PREPAREDNESS ACTIONS... A BLIZZARD WATCH MEANS THERE IS A POTENTIAL FOR FALLING AND/OR BLOWING SNOW WITH STRONG WINDS AND EXTREMELY POOR VISIBILITIES. THIS CAN LEAD TO WHITEOUT CONDITIONS AND MAKE TRAVEL VERY DANGEROUS. && $$ REV
907 WWUS43 KDMX 182153 WSWDMX URGENT - WINTER WEATHER MESSAGE NATIONAL WEATHER SERVICE DES MOINES IA 353 PM CST TUE FEB 18 2014 ...SIGNIFICANT WINTER SYSTEM TO IMPACT PORTIONS OF CENTRAL IOWA THURSDAY... .A RAPIDLY STRENGTHENING STORM IS EXPECTED TO AFFECT CENTRAL IOWA FROM LATE WEDNESDAY NIGHT THROUGH EARLY FRIDAY. PRECIPITATION WILL OVERSPREAD THE AREA WEDNESDAY NIGHT INITIALLY AS RAIN BEFORE SWITCHING TO A WINTRY MIX THEN TO ALL SNOW BY THURSDAY MORNING. A PERIOD OF MODERATE TO HEAVY SNOW FOLLOWED BY VERY STRONG AND GUSTY NORTHWEST WINDS WILL LEAD TO THE POTENTIAL FOR BLIZZARD CONDITIONS ESPECIALLY THURSDAY AFTERNOON AND EVENING. IAZ005>007-016-017-024>028-035>039-046>050-058>061-071>074-190600- /O.CON.KDMX.BZ.A.0002.140220T1200Z-140221T1200Z/ KOSSUTH-WINNEBAGO-WORTH-HANCOCK-CERRO GORDO-HUMBOLDT-WRIGHT- FRANKLIN-BUTLER-BREMER-WEBSTER-HAMILTON-HARDIN-GRUNDY-BLACK HAWK- GREENE-BOONE-STORY-MARSHALL-TAMA-GUTHRIE-DALLAS-POLK-JASPER-ADAIR- MADISON-WARREN-MARION- INCLUDING THE CITIES OF...ALGONA...FOREST CITY...LAKE MILLS... NORTHWOOD...MANLY...GARNER...BRITT...KANAWHA...MASON CITY... CLEAR LAKE...HUMBOLDT...EAGLE GROVE...CLARION...BELMOND... HAMPTON...PARKERSBURG...CLARKSVILLE...SHELL ROCK...GREENE... APLINGTON...ALLISON...DUMONT...WAVERLY...FORT DODGE... WEBSTER CITY...IOWA FALLS...ELDORA...ACKLEY...GRUNDY CENTER... REINBECK...CONRAD...DIKE...WELLSBURG...WATERLOO...CEDAR FALLS... JEFFERSON...BOONE...AMES...MARSHALLTOWN...TAMA...TOLEDO...TRAER... DYSART...GLADBROOK...GUTHRIE CENTER...PANORA...BAYARD...CASEY... PERRY...WAUKEE...ADEL...DES MOINES...NEWTON...GREENFIELD... STUART...ADAIR...FONTANELLE...WINTERSET...EARLHAM...INDIANOLA... NORWALK...CARLISLE...PELLA...KNOXVILLE 353 PM CST TUE FEB 18 2014 ...BLIZZARD WATCH REMAINS IN EFFECT FROM THURSDAY MORNING THROUGH LATE THURSDAY NIGHT... * TIMING...THE PRECIPITATION WILL SWITCH TO SNOW THURSDAY MORNING AND MAY BECOME HEAVY AT TIMES WITH SNOW FALL RATES OF ONE TO TWO INCHES PER HOUR POSSIBLE FOR A BRIEF PERIOD. VERY STRONG NORTHWEST WINDS WILL DEVELOP BY THURSDAY AFTERNOON AND EVENING AND MAY CREATE BLIZZARD CONDITIONS. * STORM TOTAL SNOW/ICE ACCUMULATIONS...3 TO 7 INCHES OF SNOW IS EXPECTED. MINOR ICE ACCUMULATIONS MAY OCCUR. * WINDS/VISIBILITY...THE WIND WILL BE LIGHT INITIALLY WITH THIS SYSTEM AS THE PRECIPITATION CHANGES TO SNOW. THE WIND WILL QUICKLY INTENSIFY AS IT BECOMES NORTHWEST AT 25 TO 35 MPH WITH GUSTS OVER 50 MPH POSSIBLE THURSDAY AFTERNOON AND EVENING. * IMPACTS...IN ADDITION TO THE BLIZZARD POTENTIAL...A BAND OF WET AND HEAVY SNOW IS ALSO POSSIBLE. THE WET SNOW MAY BE HEAVY ENOUGH TO CAUSE TREE DAMAGE ONCE THE WIND INCREASES AND COULD LEAD TO DOWNED POWER LINES. PRECAUTIONARY/PREPAREDNESS ACTIONS... A BLIZZARD WATCH MEANS THERE IS A POTENTIAL FOR FALLING AND/OR BLOWING SNOW WITH STRONG WINDS AND EXTREMELY POOR VISIBILITIES. THIS CAN LEAD TO WHITEOUT CONDITIONS AND MAKE TRAVEL VERY DANGEROUS. && $$ REV
677 WWUS43 KDMX 190306 WSWDMX URGENT - WINTER WEATHER MESSAGE NATIONAL WEATHER SERVICE DES MOINES IA 906 PM CST TUE FEB 18 2014 ...SIGNIFICANT WINTER SYSTEM TO IMPACT PORTIONS OF CENTRAL IOWA THURSDAY... .RAIN WILL OVERSPREAD THE AREA WEDNESDAY NIGHT...THEN SWITCH TO A WINTRY MIX THEN TO ALL SNOW ON THURSDAY. MODERATE TO HEAVY SNOWFALL FOLLOWED BY STRONG AND GUSTY WINDS MAY PRODUCE BLIZZARD CONDITIONS ESPECIALLY THURSDAY AFTERNOON INTO THURSDAY NIGHT. IAZ005>007-016-017-024>028-035>039-046>050-058>061-071>074-191115- /O.CON.KDMX.BZ.A.0002.140220T1200Z-140221T1200Z/ KOSSUTH-WINNEBAGO-WORTH-HANCOCK-CERRO GORDO-HUMBOLDT-WRIGHT- FRANKLIN-BUTLER-BREMER-WEBSTER-HAMILTON-HARDIN-GRUNDY-BLACK HAWK- GREENE-BOONE-STORY-MARSHALL-TAMA-GUTHRIE-DALLAS-POLK-JASPER-ADAIR- MADISON-WARREN-MARION- INCLUDING THE CITIES OF...ALGONA...FOREST CITY...LAKE MILLS... NORTHWOOD...MANLY...GARNER...BRITT...KANAWHA...MASON CITY... CLEAR LAKE...HUMBOLDT...EAGLE GROVE...CLARION...BELMOND... HAMPTON...PARKERSBURG...CLARKSVILLE...SHELL ROCK...GREENE... APLINGTON...ALLISON...DUMONT...WAVERLY...FORT DODGE... WEBSTER CITY...IOWA FALLS...ELDORA...ACKLEY...GRUNDY CENTER... REINBECK...CONRAD...DIKE...WELLSBURG...WATERLOO...CEDAR FALLS... JEFFERSON...BOONE...AMES...MARSHALLTOWN...TAMA...TOLEDO...TRAER... DYSART...GLADBROOK...GUTHRIE CENTER...PANORA...BAYARD...CASEY... PERRY...WAUKEE...ADEL...DES MOINES...NEWTON...GREENFIELD... STUART...ADAIR...FONTANELLE...WINTERSET...EARLHAM...INDIANOLA... NORWALK...CARLISLE...PELLA...KNOXVILLE 906 PM CST TUE FEB 18 2014 ...BLIZZARD WATCH REMAINS IN EFFECT FROM THURSDAY MORNING THROUGH LATE THURSDAY NIGHT... * TIMING...PRECIPITATION WILL SWITCH TO SNOW THURSDAY MORNING AND MAY BECOME HEAVY AT TIMES DURING THE DAY. STRONG NORTHWEST WINDS WILL DEVELOP BY THURSDAY AFTERNOON AND EVENING AND MAY CREATE BLIZZARD CONDITIONS INTO THURSDAY NIGHT. * STORM TOTAL SNOW/ICE ACCUMULATIONS...3 TO 7 INCHES OF SNOW IS EXPECTED. MINOR ICE AND SLEET ACCUMULATIONS MAY ALSO OCCUR. * WINDS/VISIBILITY...WINDS WILL INITIALLY BE LIGHT THURSDAY MORNING...BUT THEN QUICKLY STRENGTHEN FROM THE NORTHWEST AT 25 TO 35 MPH WITH GUSTS TO NEAR 50 MPH POSSIBLE THURSDAY AFTERNOON AND EVENING. * IMPACTS...THE BAND OF WET AND HEAVY SNOW MAY BE HEAVY ENOUGH TO CAUSE TREE AND UTILITY DAMAGE ONCE WINDS INCREASE. VERY LOW VISIBILITY AND SNOW QUICKLY COVERING ROADS MAY MAKE TRAVEL HAZARDOUS TO NEARLY IMPOSSIBLE AT TIMES. PRECAUTIONARY/PREPAREDNESS ACTIONS... A BLIZZARD WATCH MEANS THERE IS A POTENTIAL FOR FALLING AND/OR BLOWING SNOW WITH STRONG WINDS AND EXTREMELY POOR VISIBILITIES. THIS CAN LEAD TO WHITEOUT CONDITIONS AND MAKE TRAVEL VERY DANGEROUS. && $$
219 WWUS43 KDMX 191054 WSWDMX URGENT - WINTER WEATHER MESSAGE NATIONAL WEATHER SERVICE DES MOINES IA 454 AM CST WED FEB 19 2014 ...BLIZZARD CONDITIONS TO AFFECT CENTRAL TO NORTHERN IOWA THURSDAY... .RAIN IS EXPECTED TO OVERSPREAD THE AREA TONIGHT INTO EARLY THURSDAY MORNING...BEFORE TRANSITIONING TO A WINTRY MIX ACROSS PORTIONS OF NORTHERN IOWA TOWARDS SUNRISE THURSDAY. THE PRECIPITATION WILL CONTINUE TO SWITCH TO SNOW THURSDAY MORNING WITH THE NORTHWEST RECEIVING THE FIRST SNOWFLAKES. THEN SNOW WILL BEGIN TO FALL ACROSS THE WEST AND NORTHEAST TOWARDS THE MID MORNING THURSDAY. MODERATE TO HEAVY SNOWFALL FOLLOWED BY STRONG AND GUSTY NORTHWEST WINDS WILL PRODUCE BLIZZARD CONDITIONS THURSDAY AFTERNOON INTO THURSDAY NIGHT OVER NORTHERN IOWA AND POTENTIAL ACROSS PORTIONS FURTHER SOUTH AND WEST. THUNDERSNOW IS ALSO POSSIBLE...ESPECIALLY OVER EASTERN WHICH WILL EXACERBATE SNOWFALL RATES. IAZ005>007-016-017-024>028-035>039-046>049-191900- /O.UPG.KDMX.BZ.A.0002.140220T1200Z-140221T1200Z/ /O.NEW.KDMX.BZ.W.0003.140220T1500Z-140221T1200Z/ KOSSUTH-WINNEBAGO-WORTH-HANCOCK-CERRO GORDO-HUMBOLDT-WRIGHT- FRANKLIN-BUTLER-BREMER-WEBSTER-HAMILTON-HARDIN-GRUNDY-BLACK HAWK- GREENE-BOONE-STORY-MARSHALL- INCLUDING THE CITIES OF...ALGONA...FOREST CITY...LAKE MILLS... NORTHWOOD...MANLY...GARNER...BRITT...KANAWHA...MASON CITY... CLEAR LAKE...HUMBOLDT...EAGLE GROVE...CLARION...BELMOND... HAMPTON...PARKERSBURG...CLARKSVILLE...SHELL ROCK...GREENE... APLINGTON...ALLISON...DUMONT...WAVERLY...FORT DODGE... WEBSTER CITY...IOWA FALLS...ELDORA...ACKLEY...GRUNDY CENTER... REINBECK...CONRAD...DIKE...WELLSBURG...WATERLOO...CEDAR FALLS... JEFFERSON...BOONE...AMES...MARSHALLTOWN 454 AM CST WED FEB 19 2014 ...BLIZZARD WARNING IN EFFECT FROM 9 AM THURSDAY TO 6 AM CST FRIDAY... THE NATIONAL WEATHER SERVICE IN DES MOINES HAS ISSUED A BLIZZARD WARNING...WHICH IS IN EFFECT FROM 9 AM THURSDAY TO 6 AM CST FRIDAY. THE BLIZZARD WATCH IS NO LONGER IN EFFECT. * TIMING...A WINTRY MIX OF SLEET AND SNOW WILL DEVELOP DURING THE OVERNIGHT HOURS TONIGHT ACROSS FAR NORTHERN IOWA...GENERALLY ALONG AND NORTH OF HIGHWAY 18. FURTHER SOUTH...RAIN WILL BE COMMON UNTIL AFTER SUNRISE THURSDAY. THEN THE PRECIPITATION IS FORECAST TO TRANSITION TO ALL SNOW MID TO LATE THURSDAY MORNING. MODERATE TO HEAVY WET SNOW WILL FALL THROUGH THE LATE MORNING INTO THURSDAY AFTERNOON. THUNDERSNOW IS POSSIBLE THURSDAY AFTERNOON AND COULD PRODUCE SNOWFALL RATES OF 2 INCHES PER HOUR AT TIMES. THE VERY STRONG NORTHWEST WINDS DEVELOP IN THE AFTERNOON THURSDAY AND WILL CREATE WIDESPREAD BLIZZARD CONDITIONS INTO THURSDAY NIGHT. * STORM TOTAL SNOW/ICE ACCUMULATIONS...A WIDESPREAD BAND OF 5 TO 9 INCHES OF SNOW IS ANTICIPATED. HIGHER AMOUNTS ARE POSSIBLE...ESPECIALLY IF THUNDERSNOW DEVELOPS THURSDAY AFTERNOON. SOME MINOR SLEET AMOUNTS ARE FORECAST THURSDAY MORNING GENERALLY BETWEEN THE HIGHWAY 3 AND HIGHWAY 30 CORRIDORS. * WINDS/VISIBILITY...WINDS ARE EXPECTED TO SHIFT NORTHWEST LATE THURSDAY MORNING AND QUICKLY STRENGTHEN DURING THE AFTERNOON HOURS TO 25 TO 35 MPH WITH GUSTS TO NEAR 50 MPH. THE VERY STRONG NORTHWEST WINDS WILL LEAD TO NEAR WHITEOUT CONDITIONS AT TIMES THROUGH THURSDAY NIGHT. * IMPACTS...THE BAND OF WET AND HEAVY SNOW WILL STICK TO TREES AND POWERLINES POTENTIALLY CAUSING DAMAGE ONCE WINDS INCREASE. VERY LOW VISIBILITY AND INTENSE SNOWFALL RATES ARE LIKELY TO QUICKLY COVER ROADS AND MAKE TRAVEL HAZARDOUS TO NEARLY IMPOSSIBLE AT TIMES. PRECAUTIONARY/PREPAREDNESS ACTIONS... A BLIZZARD WARNING MEANS SEVERE WINTER WEATHER CONDITIONS ARE EXPECTED OR OCCURRING. FALLING AND BLOWING SNOW WITH STRONG WINDS AND POOR VISIBILITIES ARE LIKELY. THIS WILL LEAD TO WHITEOUT CONDITIONS...MAKING TRAVEL EXTREMELY DANGEROUS. DO NOT TRAVEL. IF YOU MUST TRAVEL...HAVE A WINTER SURVIVAL KIT WITH YOU. IF YOU GET STRANDED...STAY WITH YOUR VEHICLE. && $$ IAZ004-015-023-034-191900- /O.NEW.KDMX.BZ.W.0003.140220T1500Z-140221T1200Z/ EMMET-PALO ALTO-POCAHONTAS-CALHOUN- INCLUDING THE CITIES OF...ESTHERVILLE...EMMETSBURG...POCAHONTAS... LAURENS...ROLFE...FONDA...GILMORE CITY...ROCKWELL CITY...MANSON... LAKE CITY...POMEROY 454 AM CST WED FEB 19 2014 ...BLIZZARD WARNING IN EFFECT FROM 9 AM THURSDAY TO 6 AM CST FRIDAY... THE NATIONAL WEATHER SERVICE IN DES MOINES HAS ISSUED A BLIZZARD WARNING...WHICH IS IN EFFECT FROM 9 AM THURSDAY TO 6 AM CST FRIDAY. * TIMING...A BRIEF PERIOD OF SLEET AND SNOW WILL DEVELOP DURING THE OVERNIGHT HOURS TONIGHT ACROSS FAR NORTHWEST IOWA BEFORE QUICKLY TRANSITIONING TO ALL SNOW BY AROUND SUNRISE THURSDAY MORNING. MODERATE TO LOCALLY HEAVY WET SNOW WILL FALL THROUGH THURSDAY AFTERNOON. THE VERY STRONG NORTHWEST WINDS DEVELOP IN THE AFTERNOON THURSDAY AND WILL CREATE WIDESPREAD BLIZZARD CONDITIONS INTO THURSDAY NIGHT. * STORM TOTAL SNOW/ICE ACCUMULATIONS...A WIDESPREAD BAND OF 3 TO 6 INCHES OF SNOW ARE ANTICIPATED. * WINDS/VISIBILITY...WINDS ARE EXPECTED TO SHIFT NORTHWEST LATE THURSDAY MORNING AND QUICKLY STRENGTHEN DURING THE AFTERNOON HOURS TO 25 TO 35 MPH WITH GUSTS TO NEAR 50 MPH. THE VERY STRONG NORTHWEST WINDS WILL LEAD TO NEAR WHITEOUT CONDITIONS AT TIMES THROUGH THURSDAY NIGHT. * IMPACTS...THE BAND OF WET AND HEAVY SNOW AND VERY STRONG WINDS WILL LEAD TO VERY LOW VISIBILITY AND AS WELL AS QUICKLY COVER ROADS MAKING TRAVEL HAZARDOUS TO NEARLY IMPOSSIBLE AT TIMES. PRECAUTIONARY/PREPAREDNESS ACTIONS... A BLIZZARD WARNING MEANS SEVERE WINTER WEATHER CONDITIONS ARE EXPECTED OR OCCURRING. FALLING AND BLOWING SNOW WITH STRONG WINDS AND POOR VISIBILITIES ARE LIKELY. THIS WILL LEAD TO WHITEOUT CONDITIONS...MAKING TRAVEL EXTREMELY DANGEROUS. DO NOT TRAVEL. IF YOU MUST TRAVEL...HAVE A WINTER SURVIVAL KIT WITH YOU. IF YOU GET STRANDED...STAY WITH YOUR VEHICLE. && $$ IAZ033-044-045-057-062-191900- /O.EXB.KDMX.BZ.A.0002.140220T1500Z-140221T1200Z/ SAC-CRAWFORD-CARROLL-AUDUBON-POWESHIEK- INCLUDING THE CITIES OF...SAC CITY...LAKE VIEW...ODEBOLT... WALL LAKE...SCHALLER...EARLY...DENISON...CARROLL...AUDUBON... EXIRA...GRINNELL 454 AM CST WED FEB 19 2014 ...BLIZZARD WATCH IN EFFECT FROM THURSDAY MORNING THROUGH LATE THURSDAY NIGHT... THE NATIONAL WEATHER SERVICE IN DES MOINES HAS ISSUED A BLIZZARD WATCH...WHICH IS IN EFFECT FROM THURSDAY MORNING THROUGH LATE THURSDAY NIGHT. * TIMING...A WINTRY MIX IS EXPECTED TO DEVELOP OVERNIGHT TONIGHT AND TRANSITION TO SNOW THURSDAY MORNING. THE SNOW MAY BECOME HEAVY AT TIMES DURING THE DAY THURSDAY. STRONG NORTHWEST WINDS ARE FORECAST TO DEVELOP THURSDAY AFTERNOON AND PERSIST INTO THE EVENING HOURS...POTENTIALLY CREATING BLIZZARD CONDITIONS. HOWEVER...WITH THE LOWER SNOW AMOUNTS AND LITTLE TO NO SNOW CURRENTLY ON THE GROUND...CONFIDENCE IS LOWER FOR WIDESPREAD BLIZZARD CONDITIONS OVER WEST CENTRAL IOWA. * STORM TOTAL SNOW/ICE ACCUMULATIONS...3 TO 7 INCHES OF SNOW IS EXPECTED. MINOR ICE AND SLEET ACCUMULATIONS MAY ALSO OCCUR. * WINDS/VISIBILITY...WINDS WILL SHIFT NORTHWEST AND QUICKLY STRENGTHEN TO 25 TO 35 MPH WITH GUSTS TO NEAR 50 MPH POSSIBLE BY THURSDAY AFTERNOON AND EVENING. * IMPACTS...THE BAND OF WET AND HEAVY SNOW AND VERY STRONG WINDS MAY LEAD TO VERY LOW VISIBILITY AND AS WELL AS QUICKLY COVER ROADS MAKING TRAVEL HAZARDOUS TO NEARLY IMPOSSIBLE AT TIMES. PRECAUTIONARY/PREPAREDNESS ACTIONS... A BLIZZARD WATCH MEANS THERE IS A POTENTIAL FOR FALLING AND/OR BLOWING SNOW WITH STRONG WINDS AND EXTREMELY POOR VISIBILITIES. THIS CAN LEAD TO WHITEOUT CONDITIONS AND MAKE TRAVEL VERY DANGEROUS. && $$ IAZ050-058>061-071>074-191900- /O.EXT.KDMX.BZ.A.0002.140220T1500Z-140221T1200Z/ TAMA-GUTHRIE-DALLAS-POLK-JASPER-ADAIR-MADISON-WARREN-MARION- INCLUDING THE CITIES OF...TAMA...TOLEDO...TRAER...DYSART... GLADBROOK...GUTHRIE CENTER...PANORA...BAYARD...CASEY...PERRY... WAUKEE...ADEL...DES MOINES...NEWTON...GREENFIELD...STUART... ADAIR...FONTANELLE...WINTERSET...EARLHAM...INDIANOLA...NORWALK... CARLISLE...PELLA...KNOXVILLE 454 AM CST WED FEB 19 2014 ...BLIZZARD WATCH NOW IN EFFECT FROM THURSDAY MORNING THROUGH LATE THURSDAY NIGHT... * TIMING...A WINTRY MIX IS EXPECTED TO DEVELOP OVERNIGHT TONIGHT AND TRANSITION TO SNOW THURSDAY MORNING. THE SNOW MAY BECOME HEAVY AT TIMES DURING THE DAY THURSDAY. STRONG NORTHWEST WINDS ARE FORECAST TO DEVELOP THURSDAY AFTERNOON AND PERSIST INTO THE EVENING HOURS...POTENTIALLY CREATING BLIZZARD CONDITIONS. HOWEVER...WITH THE LOWER SNOW AMOUNTS AND LITTLE TO NO SNOW CURRENTLY ON THE GROUND...CONFIDENCE IS LOWER FOR WIDESPREAD BLIZZARD CONDITIONS OVER CENTRAL TO EAST CENTRAL IOWA. * STORM TOTAL SNOW/ICE ACCUMULATIONS...3 TO 7 INCHES OF SNOW IS EXPECTED. MINOR ICE AND SLEET ACCUMULATIONS MAY ALSO OCCUR. * WINDS/VISIBILITY...WINDS WILL SHIFT NORTHWEST AND QUICKLY STRENGTHEN TO 25 TO 35 MPH WITH GUSTS TO NEAR 50 MPH POSSIBLE BY THURSDAY AFTERNOON AND EVENING. * IMPACTS...THE BAND OF WET AND HEAVY SNOW AND VERY STRONG WINDS MAY LEAD TO VERY LOW VISIBILITY AND AS WELL AS QUICKLY COVER ROADS MAKING TRAVEL HAZARDOUS TO NEARLY IMPOSSIBLE AT TIMES. PRECAUTIONARY/PREPAREDNESS ACTIONS... A BLIZZARD WATCH MEANS THERE IS A POTENTIAL FOR FALLING AND/OR BLOWING SNOW WITH STRONG WINDS AND EXTREMELY POOR VISIBILITIES. THIS CAN LEAD TO WHITEOUT CONDITIONS AND MAKE TRAVEL VERY DANGEROUS. && $$ PODRAZIK/DONAVON
709 WWUS43 KDMX 191656 WSWDMX URGENT - WINTER WEATHER MESSAGE NATIONAL WEATHER SERVICE DES MOINES IA 1056 AM CST WED FEB 19 2014 ...BLIZZARD CONDITIONS TO AFFECT CENTRAL TO NORTHERN IOWA THURSDAY... .LOW PRESSURE WILL DEVELOP OVER SOUTHWEST KANSAS TONIGHT. THE LOW WILL MOVE ACROSS SOUTHEAST IOWA THURSDAY...TO UPPER MICHIGAN THURSDAY NIGHT. RAIN IS EXPECTED TO OVERSPREAD THE AREA TONIGHT INTO EARLY THURSDAY MORNING...BEFORE TRANSITIONING TO A WINTRY MIX ACROSS PORTIONS OF NORTHERN IOWA TOWARDS SUNRISE THURSDAY...AND OVER THE REST OF THE AREA BY MID DAY. MODERATE TO HEAVY SNOWFALL FOLLOWED BY STRONG AND GUSTY NORTHWEST WINDS WILL PRODUCE BLIZZARD CONDITIONS THURSDAY AFTERNOON INTO THURSDAY NIGHT. IAZ004>007-015>017-023>028-034>039-046>049-200100- /O.CON.KDMX.BZ.W.0003.140220T1500Z-140221T1200Z/ EMMET-KOSSUTH-WINNEBAGO-WORTH-PALO ALTO-HANCOCK-CERRO GORDO- POCAHONTAS-HUMBOLDT-WRIGHT-FRANKLIN-BUTLER-BREMER-CALHOUN-WEBSTER- HAMILTON-HARDIN-GRUNDY-BLACK HAWK-GREENE-BOONE-STORY-MARSHALL- INCLUDING THE CITIES OF...ESTHERVILLE...ALGONA...FOREST CITY... LAKE MILLS...NORTHWOOD...MANLY...EMMETSBURG...GARNER...BRITT... KANAWHA...MASON CITY...CLEAR LAKE...POCAHONTAS...LAURENS... ROLFE...FONDA...GILMORE CITY...HUMBOLDT...EAGLE GROVE...CLARION... BELMOND...HAMPTON...PARKERSBURG...CLARKSVILLE...SHELL ROCK... GREENE...APLINGTON...ALLISON...DUMONT...WAVERLY...ROCKWELL CITY... MANSON...LAKE CITY...POMEROY...FORT DODGE...WEBSTER CITY... IOWA FALLS...ELDORA...ACKLEY...GRUNDY CENTER...REINBECK... CONRAD...DIKE...WELLSBURG...WATERLOO...CEDAR FALLS...JEFFERSON... BOONE...AMES...MARSHALLTOWN 1056 AM CST WED FEB 19 2014 ...BLIZZARD WARNING REMAINS IN EFFECT FROM 9 AM THURSDAY TO 6 AM CST FRIDAY... * TIMING...A WINTRY MIX OF SLEET AND SNOW WILL DEVELOP DURING THE OVERNIGHT HOURS TONIGHT ACROSS FAR NORTHERN IOWA... GENERALLY ALONG AND NORTH OF HIGHWAY 18. FURTHER SOUTH...RAIN WILL BE COMMON UNTIL AFTER SUNRISE THURSDAY. THEN THE PRECIPITATION IS FORECAST TO TRANSITION TO ALL SNOW MID TO LATE THURSDAY MORNING. MODERATE TO HEAVY WET SNOW WILL FALL THROUGH THE LATE MORNING INTO THURSDAY AFTERNOON. THUNDERSNOW IS POSSIBLE THURSDAY AFTERNOON AND COULD PRODUCE SNOWFALL RATES OF 2 INCHES PER HOUR AT TIMES. THE VERY STRONG NORTHWEST WINDS DEVELOP IN THE AFTERNOON THURSDAY AND WILL CREATE WIDESPREAD BLIZZARD CONDITIONS INTO THURSDAY NIGHT. * STORM TOTAL SNOW/ICE ACCUMULATIONS...A WIDESPREAD BAND OF 5 TO 9 INCHES OF SNOW IS ANTICIPATED. HIGHER AMOUNTS ARE POSSIBLE... ESPECIALLY IF THUNDERSNOW DEVELOPS THURSDAY AFTERNOON. SOME MINOR SLEET AMOUNTS ARE FORECAST THURSDAY MORNING GENERALLY BETWEEN THE HIGHWAY 3 AND HIGHWAY 30 CORRIDORS. * WINDS/VISIBILITY...WINDS ARE EXPECTED TO SHIFT NORTHWEST LATE THURSDAY MORNING AND QUICKLY STRENGTHEN DURING THE AFTERNOON HOURS TO 25 TO 35 MPH WITH GUSTS TO NEAR 50 MPH. THE VERY STRONG NORTHWEST WINDS WILL LEAD TO NEAR WHITEOUT CONDITIONS AT TIMES THROUGH THURSDAY NIGHT. * IMPACTS...THE BAND OF WET AND HEAVY SNOW WILL STICK TO TREES AND POWERLINES POTENTIALLY CAUSING DAMAGE ONCE WINDS INCREASE. VERY LOW VISIBILITY AND INTENSE SNOWFALL RATES ARE LIKELY TO QUICKLY COVER ROADS AND MAKE TRAVEL HAZARDOUS TO NEARLY IMPOSSIBLE AT TIMES. PRECAUTIONARY/PREPAREDNESS ACTIONS... A BLIZZARD WARNING MEANS SEVERE WINTER WEATHER CONDITIONS ARE EXPECTED OR OCCURRING. FALLING AND BLOWING SNOW WITH STRONG WINDS AND POOR VISIBILITIES ARE LIKELY. THIS WILL LEAD TO WHITEOUT CONDITIONS...MAKING TRAVEL EXTREMELY DANGEROUS. DO NOT TRAVEL. IF YOU MUST TRAVEL...HAVE A WINTER SURVIVAL KIT WITH YOU. IF YOU GET STRANDED...STAY WITH YOUR VEHICLE. && $$ IAZ033-044-045-050-057>062-071>074-200100- /O.CON.KDMX.BZ.A.0002.140220T1500Z-140221T1200Z/ SAC-CRAWFORD-CARROLL-TAMA-AUDUBON-GUTHRIE-DALLAS-POLK-JASPER- POWESHIEK-ADAIR-MADISON-WARREN-MARION- INCLUDING THE CITIES OF...SAC CITY...LAKE VIEW...ODEBOLT... WALL LAKE...SCHALLER...EARLY...DENISON...CARROLL...TAMA... TOLEDO...TRAER...DYSART...GLADBROOK...AUDUBON...EXIRA... GUTHRIE CENTER...PANORA...BAYARD...CASEY...PERRY...WAUKEE... ADEL...DES MOINES...NEWTON...GRINNELL...GREENFIELD...STUART... ADAIR...FONTANELLE...WINTERSET...EARLHAM...INDIANOLA...NORWALK... CARLISLE...PELLA...KNOXVILLE 1056 AM CST WED FEB 19 2014 ...BLIZZARD WATCH REMAINS IN EFFECT FROM THURSDAY MORNING THROUGH LATE THURSDAY NIGHT... * TIMING...A WINTRY MIX IS EXPECTED TO DEVELOP OVERNIGHT TONIGHT AND TRANSITION TO SNOW THURSDAY DURING THE MID TO LATE MORNING. THE SNOW MAY BECOME HEAVY AT TIMES DURING THE DAY THURSDAY. STRONG NORTHWEST WINDS ARE FORECAST TO DEVELOP THURSDAY AFTERNOON AND PERSIST INTO THE EVENING HOURS...POTENTIALLY CREATING BLIZZARD CONDITIONS. HOWEVER...WITH THE LOWER SNOW AMOUNTS AND LITTLE TO NO SNOW CURRENTLY ON THE GROUND...CONFIDENCE IS LOWER FOR WIDESPREAD BLIZZARD CONDITIONS OVER WEST CENTRAL IOWA. * STORM TOTAL SNOW/ICE ACCUMULATIONS...3 TO 7 INCHES OF SNOW IS EXPECTED. MINOR ICE AND SLEET ACCUMULATIONS MAY ALSO OCCUR. * WINDS/VISIBILITY...WINDS WILL SHIFT NORTHWEST AND QUICKLY STRENGTHEN TO 25 TO 35 MPH WITH GUSTS TO NEAR 50 MPH POSSIBLE BY THURSDAY AFTERNOON AND EVENING. * IMPACTS...THE BAND OF WET AND HEAVY SNOW AND VERY STRONG WINDS MAY LEAD TO VERY LOW VISIBILITY AND AS WELL AS QUICKLY COVER ROADS MAKING TRAVEL HAZARDOUS TO NEARLY IMPOSSIBLE AT TIMES. PRECAUTIONARY/PREPAREDNESS ACTIONS... A BLIZZARD WATCH MEANS THERE IS A POTENTIAL FOR FALLING AND/OR BLOWING SNOW WITH STRONG WINDS AND EXTREMELY POOR VISIBILITIES. THIS CAN LEAD TO WHITEOUT CONDITIONS AND MAKE TRAVEL VERY DANGEROUS. && $$
071 WWUS43 KDMX 192143 WSWDMX URGENT - WINTER WEATHER MESSAGE NATIONAL WEATHER SERVICE DES MOINES IA 343 PM CST WED FEB 19 2014 ...BLIZZARD CONDITIONS TO AFFECT CENTRAL TO NORTHERN IOWA THURSDAY... .LOW PRESSURE FROM SOUTHWEST KANSAS WILL INTENSIFY AS IT MOVES TO NORTHWEST ILLINOIS BY THURSDAY EVENING AND TO LAKE SUPERIOR THURSDAY NIGHT. RAIN IS EXPECTED TO OVERSPREAD THE AREA TONIGHT INTO EARLY THURSDAY MORNING...BEFORE TRANSITIONING TO A WINTRY MIX ACROSS PORTIONS OF NORTHERN IOWA TOWARDS SUNRISE THURSDAY... AND OVER THE REST OF THE AREA BY MID DAY. MODERATE TO HEAVY SNOWFALL FOLLOWED BY STRONG AND GUSTY NORTHWEST WINDS WILL PRODUCE BLIZZARD CONDITIONS THURSDAY AFTERNOON INTO THURSDAY NIGHT. IAZ033-044-045-050-058>061-200545- /O.UPG.KDMX.BZ.A.0002.140220T1500Z-140221T1200Z/ /O.NEW.KDMX.WS.W.0002.140220T1500Z-140221T1200Z/ SAC-CRAWFORD-CARROLL-TAMA-GUTHRIE-DALLAS-POLK-JASPER- INCLUDING THE CITIES OF...SAC CITY...LAKE VIEW...ODEBOLT... WALL LAKE...SCHALLER...EARLY...DENISON...CARROLL...TAMA... TOLEDO...TRAER...DYSART...GLADBROOK...GUTHRIE CENTER...PANORA... BAYARD...CASEY...PERRY...WAUKEE...ADEL...DES MOINES...NEWTON 343 PM CST WED FEB 19 2014 ...WINTER STORM WARNING IN EFFECT FROM 9 AM THURSDAY TO 6 AM CST FRIDAY... THE NATIONAL WEATHER SERVICE IN DES MOINES HAS ISSUED A WINTER STORM WARNING FOR HEAVY SNOW AND SIGNIFICANT BLOWING SNOW...WHICH IS IN EFFECT FROM 9 AM THURSDAY TO 6 AM CST FRIDAY. THE BLIZZARD WATCH IS NO LONGER IN EFFECT. * TIMING...A WINTRY MIX IS EXPECTED TO DEVELOP OVERNIGHT TONIGHT AND TRANSITION TO SNOW THURSDAY DURING THE MID TO LATE MORNING. THE SNOW MAY BECOME HEAVY AT TIMES DURING THE DAY THURSDAY. STRONG NORTHWEST WINDS ARE FORECAST TO DEVELOP THURSDAY AFTERNOON AND PERSIST INTO THE EVENING HOURS... POTENTIALLY CREATING BLIZZARD CONDITIONS AT TIMES. WITH LITTLE TO NO SNOW CURRENTLY ON THE GROUND...THE CHANCE FOR WIDESPREAD BLIZZARD CONDITIONS IS LOW. * STORM TOTAL SNOW/ICE ACCUMULATIONS...3 TO 5 INCHES OF SNOW IS EXPECTED. MINOR ICE AND SLEET ACCUMULATIONS MAY ALSO OCCUR. * WINDS/VISIBILITY...WINDS WILL SHIFT NORTHWEST AND QUICKLY STRENGTHEN TO 25 TO 35 MPH WITH GUSTS TO NEAR 50 MPH POSSIBLE BY THURSDAY AFTERNOON AND EVENING. * IMPACTS...THE BAND OF WET AND HEAVY SNOW AND VERY STRONG WINDS MAY LEAD TO VERY LOW VISIBILITY AND AS WELL AS QUICKLY COVER ROADS MAKING TRAVEL HAZARDOUS TO NEARLY IMPOSSIBLE AT TIMES. PRECAUTIONARY/PREPAREDNESS ACTIONS... A WINTER STORM WARNING MEANS SIGNIFICANT AMOUNTS OF SNOW...SLEET...AND ICE ARE EXPECTED OR OCCURRING. STRONG WINDS ARE ALSO POSSIBLE. THIS WILL MAKE TRAVEL VERY HAZARDOUS OR IMPOSSIBLE. && $$ IAZ004>007-015>017-023>028-034>039-046>049-200545- /O.CON.KDMX.BZ.W.0003.140220T1500Z-140221T1200Z/ EMMET-KOSSUTH-WINNEBAGO-WORTH-PALO ALTO-HANCOCK-CERRO GORDO- POCAHONTAS-HUMBOLDT-WRIGHT-FRANKLIN-BUTLER-BREMER-CALHOUN-WEBSTER- HAMILTON-HARDIN-GRUNDY-BLACK HAWK-GREENE-BOONE-STORY-MARSHALL- INCLUDING THE CITIES OF...ESTHERVILLE...ALGONA...FOREST CITY... LAKE MILLS...NORTHWOOD...MANLY...EMMETSBURG...GARNER...BRITT... KANAWHA...MASON CITY...CLEAR LAKE...POCAHONTAS...LAURENS... ROLFE...FONDA...GILMORE CITY...HUMBOLDT...EAGLE GROVE...CLARION... BELMOND...HAMPTON...PARKERSBURG...CLARKSVILLE...SHELL ROCK... GREENE...APLINGTON...ALLISON...DUMONT...WAVERLY...ROCKWELL CITY... MANSON...LAKE CITY...POMEROY...FORT DODGE...WEBSTER CITY... IOWA FALLS...ELDORA...ACKLEY...GRUNDY CENTER...REINBECK... CONRAD...DIKE...WELLSBURG...WATERLOO...CEDAR FALLS...JEFFERSON... BOONE...AMES...MARSHALLTOWN 343 PM CST WED FEB 19 2014 ...BLIZZARD WARNING REMAINS IN EFFECT FROM 9 AM THURSDAY TO 6 AM CST FRIDAY... * TIMING...A WINTRY MIX OF SLEET AND SNOW WILL DEVELOP DURING THE OVERNIGHT HOURS TONIGHT ACROSS FAR NORTHERN IOWA... GENERALLY ALONG AND NORTH OF HIGHWAY 18. FURTHER SOUTH...RAIN WILL BE COMMON UNTIL AFTER SUNRISE THURSDAY. THEN THE PRECIPITATION IS FORECAST TO TRANSITION TO ALL SNOW MID TO LATE THURSDAY MORNING. MODERATE TO HEAVY WET SNOW WILL FALL THROUGH THE LATE MORNING INTO THURSDAY AFTERNOON. THUNDERSNOW IS POSSIBLE THURSDAY THROUGH MID DAY AND COULD PRODUCE SNOWFALL RATES OF 2 INCHES PER HOUR AT TIMES. THE VERY STRONG NORTHWEST WINDS DEVELOP IN THE AFTERNOON THURSDAY AND WILL CREATE WIDESPREAD BLIZZARD CONDITIONS INTO THURSDAY NIGHT. * STORM TOTAL SNOW/ICE ACCUMULATIONS...A WIDESPREAD BAND OF 5 TO 9 INCHES OF SNOW IS ANTICIPATED. HIGHER AMOUNTS ARE POSSIBLE... ESPECIALLY IF THUNDERSNOW DEVELOPS. SOME MINOR SLEET AMOUNTS ARE FORECAST THURSDAY MORNING GENERALLY BETWEEN THE HIGHWAY 3 AND HIGHWAY 30 CORRIDORS. * WINDS/VISIBILITY...WINDS ARE EXPECTED TO SHIFT NORTHWEST LATE THURSDAY MORNING AND QUICKLY STRENGTHEN DURING THE AFTERNOON HOURS TO 25 TO 35 MPH WITH GUSTS TO NEAR 50 MPH. THE VERY STRONG NORTHWEST WINDS WILL LEAD TO NEAR WHITEOUT CONDITIONS AT TIMES THROUGH THURSDAY NIGHT. * IMPACTS...THE BAND OF WET AND HEAVY SNOW WILL STICK TO TREES AND POWERLINES POTENTIALLY CAUSING DAMAGE ONCE WINDS INCREASE. VERY LOW VISIBILITY AND INTENSE SNOWFALL RATES ARE LIKELY TO QUICKLY COVER ROADS AND MAKE TRAVEL HAZARDOUS TO NEARLY IMPOSSIBLE AT TIMES. PRECAUTIONARY/PREPAREDNESS ACTIONS... A BLIZZARD WARNING MEANS SEVERE WINTER WEATHER CONDITIONS ARE EXPECTED OR OCCURRING. FALLING AND BLOWING SNOW WITH STRONG WINDS AND POOR VISIBILITIES ARE LIKELY. THIS WILL LEAD TO WHITEOUT CONDITIONS...MAKING TRAVEL EXTREMELY DANGEROUS. DO NOT TRAVEL. IF YOU MUST TRAVEL...HAVE A WINTER SURVIVAL KIT WITH YOU. IF YOU GET STRANDED...STAY WITH YOUR VEHICLE. && $$ IAZ057-062-071>074-200545- /O.UPG.KDMX.BZ.A.0002.140220T1500Z-140221T1200Z/ /O.NEW.KDMX.WW.Y.0013.140220T1500Z-140221T1200Z/ AUDUBON-POWESHIEK-ADAIR-MADISON-WARREN-MARION- INCLUDING THE CITIES OF...AUDUBON...EXIRA...GRINNELL... GREENFIELD...STUART...ADAIR...FONTANELLE...WINTERSET...EARLHAM... INDIANOLA...NORWALK...CARLISLE...PELLA...KNOXVILLE 343 PM CST WED FEB 19 2014 ...WINTER WEATHER ADVISORY IN EFFECT FROM 9 AM THURSDAY TO 6 AM CST FRIDAY... THE NATIONAL WEATHER SERVICE IN DES MOINES HAS ISSUED A WINTER WEATHER ADVISORY FOR SNOW AND BLOWING SNOW...WHICH IS IN EFFECT FROM 9 AM THURSDAY TO 6 AM CST FRIDAY. THE BLIZZARD WATCH IS NO LONGER IN EFFECT. * TIMING...A WINTRY MIX IS EXPECTED TO DEVELOP OVERNIGHT TONIGHT AND TRANSITION TO SNOW THURSDAY DURING THE MID TO LATE MORNING. THE SNOW MAY BECOME HEAVY AT TIMES DURING THE DAY THURSDAY. STRONG NORTHWEST WINDS ARE FORECAST TO DEVELOP THURSDAY AFTERNOON AND PERSIST INTO THE EVENING HOURS... POTENTIALLY CREATING BLIZZARD CONDITIONS. HOWEVER...WITH THE LOWER SNOW AMOUNTS AND LITTLE TO NO SNOW CURRENTLY ON THE GROUND... CONFIDENCE IS FOR WIDESPREAD BLIZZARD CONDITIONS IS LOW. * STORM TOTAL SNOW/ICE ACCUMULATIONS...2 TO 4 INCHES OF SNOW IS EXPECTED. MINOR ICE AND SLEET ACCUMULATIONS MAY ALSO OCCUR. * WINDS/VISIBILITY...WINDS WILL SHIFT NORTHWEST AND QUICKLY STRENGTHEN TO 25 TO 35 MPH WITH GUSTS TO NEAR 50 MPH POSSIBLE BY THURSDAY AFTERNOON AND EVENING. * IMPACTS...THE BAND OF WET AND HEAVY SNOW AND VERY STRONG WINDS MAY LEAD TO VERY LOW VISIBILITY AND AS WELL AS QUICKLY COVER ROADS MAKING TRAVEL HAZARDOUS TO NEARLY IMPOSSIBLE AT TIMES. PRECAUTIONARY/PREPAREDNESS ACTIONS... A WINTER WEATHER ADVISORY MEANS THAT PERIODS OF SNOW...SLEET...OR FREEZING RAIN WILL CAUSE TRAVEL DIFFICULTIES. BE PREPARED FOR SLIPPERY ROADS AND LIMITED VISIBILITIES...AND USE CAUTION WHILE DRIVING. && $$ IAZ070-200545- /O.NEW.KDMX.WW.Y.0013.140220T1500Z-140221T1200Z/ CASS- INCLUDING THE CITY OF...ATLANTIC 343 PM CST WED FEB 19 2014 ...WINTER WEATHER ADVISORY IN EFFECT FROM 9 AM THURSDAY TO 6 AM CST FRIDAY... THE NATIONAL WEATHER SERVICE IN DES MOINES HAS ISSUED A WINTER WEATHER ADVISORY FOR SNOW AND BLOWING SNOW...WHICH IS IN EFFECT FROM 9 AM THURSDAY TO 6 AM CST FRIDAY. * TIMING...A WINTRY MIX IS EXPECTED TO DEVELOP OVERNIGHT TONIGHT AND TRANSITION TO SNOW THURSDAY DURING THE EARLY TO MID MORNING. THE SNOW MAY BECOME HEAVY AT TIMES DURING THE DAY THURSDAY. STRONG NORTHWEST WINDS ARE FORECAST TO DEVELOP THURSDAY AFTERNOON AND PERSIST INTO THE EVENING HOURS... POTENTIALLY CREATING BLIZZARD CONDITIONS. HOWEVER...WITH THE LOWER SNOW AMOUNTS AND LITTLE TO NO SNOW CURRENTLY ON THE GROUND... CONFIDENCE IS FOR WIDESPREAD BLIZZARD CONDITIONS IS LOW. * STORM TOTAL SNOW/ICE ACCUMULATIONS...2 TO 4 INCHES OF SNOW IS EXPECTED. MINOR ICE AND SLEET ACCUMULATIONS MAY ALSO OCCUR. * WINDS/VISIBILITY...WINDS WILL SHIFT NORTHWEST AND QUICKLY STRENGTHEN TO 25 TO 35 MPH WITH GUSTS TO NEAR 50 MPH POSSIBLE BY THURSDAY AFTERNOON AND EVENING. * IMPACTS...THE BAND OF WET AND HEAVY SNOW AND VERY STRONG WINDS MAY LEAD TO VERY LOW VISIBILITY AND AS WELL AS QUICKLY COVER ROADS MAKING TRAVEL HAZARDOUS TO NEARLY IMPOSSIBLE AT TIMES. PRECAUTIONARY/PREPAREDNESS ACTIONS... A WINTER WEATHER ADVISORY MEANS THAT PERIODS OF SNOW...SLEET...OR FREEZING RAIN WILL CAUSE TRAVEL DIFFICULTIES. BE PREPARED FOR SLIPPERY ROADS AND LIMITED VISIBILITIES...AND USE CAUTION WHILE DRIVING. && $$
What forecasters said that day
The local office's own words before this blizzard watch 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 blizzard watch went out at Feb 17, 11:39 PM CST, 4 hours 27 minutes earlier.
Area forecast discussion, Feb 17, 11:39 PM CST, 4 hours 27 minutes before
AREA FORECAST DISCUSSION NATIONAL WEATHER SERVICE DES MOINES IA 1139 PM CST MON FEB 17 2014 .SHORT TERM /TONIGHT/... ISSUED AT 323 PM CST MON FEB 17 2014 NOT MUCH FOR TONIGHT...FOR A CHANGE. WARM CHINOOK WINDS THIS AFTERNOON RAISED TEMPS QUITE A BIT AND RESULTED IN MELTING SNOW AND HIGHER SFC DEWPOINTS. SOME CONCERN THAT PATCHY FOG MAY FORM ACROSS NORTHEAST IOWA IN VALLEY AREAS SO HAVE ADDED THAT BETWEEN 06-12Z. WINDS EXPECTED TO REMAIN NEAR 10 KTS FROM THE SOUTH AFTER THE WEAK RIDGE QUICKLY MOVES EAST BY 06Z. ANY FOG THAT DOES FORM MAY BEGIN TO MIX OUT BY SUNRISE. LOWS SHOULD FALL INTO THE 20S NORTHEAST TO THE LOWER 30S WEST. .LONG TERM /TUESDAY THROUGH MONDAY/... ISSUED AT 323 PM CST MON FEB 17 2014 THE FORECAST FOR THE REMAINDER OF THIS WEEK IS A GOOD NEWS/BAD NEWS EXERCISE. THE GOOD NEWS IS THAT TUESDAY AND WEDNESDAY WILL BE QUIET AND MILD AS PROMISED. REMAINING SNOW COVER AND SOME CLOUDINESS ON TUESDAY AFTERNOON WILL HOLD THE WARMTH IN CHECK ESPECIALLY ACROSS OUR NORTHEAST HALF OR SO...BUT EVEN THERE HIGHS ARE STILL EXPECTED TO BE IN THE UPPER 30S AND LOWER 40S...AND ACROSS THE SOUTHWEST WILL STILL LIKELY REACH THE LOWER 50S. LITTLE CHANGE WAS MADE TO TEMPERATURES OR ANY OTHER FIELD DURING THESE PERIODS. UNFORTUNATELY THE MILD AND QUIET DAYS WILL BE RUDELY INTERRUPTED BY A STORM SYSTEM MOVING ACROSS THE REGION ON WEDNESDAY NIGHT AND THURSDAY. THERE HAS BEEN BETTER MODEL CONSENSUS WITH THE SOLUTIONS FOR THIS SYSTEM TODAY AND CONFIDENCE IS INCREASING IN A FAIRLY HIGH PRECIPITATION EVENT UNFOLDING ACROSS THE FORECAST AREA...PARTICULARLY BETWEEN MIDNIGHT WEDNESDAY NIGHT AND MAYBE THURSDAY AFTERNOON. THE DEGREE OF PHASING IS STILL IN QUESTION...BUT IF IT LINES UP RIGHT THINGS COULD GET INTERESTING. INITIALLY A SURFACE LOW WILL DEVELOP ALONG THE LEE OF THE ROCKIES LATE WEDNESDAY...AHEAD OF A 500 MB TROUGH APPROACHING FROM THE WEST. AS THIS TROUGH MOVES OVER THE HIGH PLAINS IT WILL DEEPEN AND THE SURFACE LOW WILL INTENSIFY RAPIDLY OVER KANSAS/OKLAHOMA...EXTENDING AN INVERTED TROUGH UP OVER CENTRAL IOWA. THIS WILL BE A HIGH ENERGY SYSTEM WITH ROBUST VERTICAL FORCING AND DEEP SATURATION. THE PRIMARY FORECAST CHALLENGE LIES IN THERMAL FIELDS...WHICH WILL INITIALLY SUPPORT MOSTLY RAIN AND THEN GRADUALLY CHANGE OVER TO SNOW AS THE SURFACE LOW KICKS OUT AND COLDER AIR STREAMS IN FROM THE NORTHWEST. THERE HAVE BEEN INCREASING SIGNALS THAT AS THE LOW BOMBS OUT ACROSS MISSOURI/ILLINOIS ON THURSDAY A DEFORMATION ZONE WILL FORM ALONG ITS WESTERN PERIPHERY...POSSIBLY OVER OUR AREA...AND IF THE PRECIPITATION IS ALL SNOW BY THEN THERE COULD BE SIGNIFICANT ACCUMULATIONS IN A FAIRLY NARROW SWATH. UNFORTUNATELY THE ABILITY TO PREDICT SUCH SMALL SCALE FEATURES AND THEIR PRECISE LOCATION IS QUESTIONABLE AT THIS RANGE...BUT IT WILL BE IMPORTANT TO MONITOR THIS POSSIBILITY OVER THE NEXT DAY OR TWO. IT IS ALSO WORTH NOTING THAT OUR SOUTHEASTERN COUNTIES COULD SEE SOME THUNDERSTORMS LATE WEDNESDAY NIGHT/THURSDAY MORNING...BUT SEVERE WEATHER IS NOT EXPECTED. BEHIND THE WEDNESDAY NIGHT/THURSDAY STORM THE FORECAST IS SOMEWHAT QUIETER WITH WEST NORTHWEST FLOW ALOFT AND A SERIES OF WEAK SHORTWAVES PRODUCING INTERMITTENT BUT GENERALLY LIGHT SNOW CHANCES AND PRODUCING A SLOW BUT STEADY COOLING TREND. BY EARLY NEXT WEEK HIGHS WILL ONLY BE IN THE TEENS AND 20S WITH LOWS IN THE SINGLE DIGITS IN MOST AREAS. && .AVIATION...18/06Z ISSUED AT 1139 PM CST MON FEB 17 2014 MAY STILL SEE SOME LIGHT FOG AT KMCW AND KALO LATE TONIGHT TOWARD SUNRISE RESULTING IN MVFR VSBYS...OTHERWISE VFR CONDITIONS EXPECTED THROUGHOUT THE TAF PERIOD. WINDS TO SHIFT AROUND TO THE SOUTH...AND THEN BACK AROUND TO THE WEST TO NORTHWEST AND INCREASE THROUGH THE DAY TUESDAY. && .DMX WATCHES/WARNINGS/ADVISORIES...NONE. && SHORT TERM...REV LONG TERM...LEE AVIATION...BEERENDS
Hazardous weather outlook, Feb 17, 3:35 PM CST, 12 hours 31 minutes before
HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE DES MOINES IA 335 PM CST MON FEB 17 2014 IAZ004>007-015>017-023>028-033>039-044>050-057>062-070>075- 081>086-092>097-181200- 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- 335 PM CST MON FEB 17 2014 THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF CENTRAL IOWA. .DAY ONE...THIS AFTERNOON AND TONIGHT NO HAZARDOUS WEATHER IS EXPECTED AT THIS TIME. .DAYS TWO THROUGH SEVEN...TUESDAY THROUGH SUNDAY A STORM SYSTEM WILL IMPACT THE AREA FROM WEDNESDAY NIGHT THROUGH THURSDAY. MOST PRECIPITATION WILL INITIALLY FALL IN THE FORM OF RAIN...WITH A FEW THUNDERSTORMS POSSIBLE SOUTHEAST LATE WEDNESDAY NIGHT AND THURSDAY MORNING. THE PRECIPITATION WILL THEN CHANGE TO SNOW FROM NORTHWEST TO SOUTHEAST...ESPECIALLY FROM EARLY THURSDAY MORNING INTO THE AFTERNOON. THERE IS SOME POTENTIAL FOR A SWATH OF MODERATE OR GREATER SNOWFALL...HOWEVER AT THIS TIME IT REMAINS UNCERTAIN WHETHER OR NOT THIS WILL OCCUR AND IN WHAT AREA. PLEASE STAY TUNED FOR LATER UPDATES ON THIS SYSTEM. .SPOTTER INFORMATION STATEMENT... SPOTTER ACTIVATION WILL NOT BE NEEDED.
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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.