Alert archive / Iowa / Winter Storm Watches in 2012

Winter Storm Watch 1, NWS Des Moines, IA

February 2, 201225 counties in Iowa

NWS Des Moines, IA issued this winter storm watch at Feb 2, 2012, 4:34 AM CST for 25 counties in Iowa. It took effect at Feb 3, 2012, 9:00 PM CST. It was in force for .

The area

The counties it named.

The facts

Issued
Feb 2, 2012, 4:34 AM CST (10:34 UTC)
In effect from
Feb 3, 2012, 9:00 PM CST
Expired
Feb 3, 2012, 3:36 PM CST
In force
Issued by
NWS Des Moines, IA
All 25 counties

Adair County, IA, Adams County, IA, Audubon County, IA, Boone County, IA, Calhoun County, IA, Carroll County, IA, Cass County, IA, Crawford County, IA, Dallas County, IA, Greene County, IA, Grundy County, IA, Guthrie County, IA, Hamilton County, IA, Hardin County, IA, Humboldt County, IA, Madison County, IA, Marshall County, IA, Pocahontas County, IA, Polk County, IA, Ringgold County, IA, Sac County, IA, Story County, IA, Taylor County, IA, Union County, IA, Webster County, IA

The radar

The Des Moines radar (KDMX), 45 km from the middle of the area, began a volume at 10:36 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, 10.6 hours before the alert went out and 187 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.

Skew-T log-pSkew-T log-p diagram, Omaha, NE at 00:00Z on 2012-02-02Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 0 joules per kilogram.LCL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Omaha, NE at 00:00Z on 2012-02-02The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 39 square meters per square second.1939587897Sfc1 km3 km6 km9 kmRMLM
The wind turning with height, colored by layer: ground to 1 km, 1 to 3 km, 3 to 6 km, 6 to 10 km.
Mixed-layer CAPE
0 J/kg
Mixed-layer CIN
No buoyant parcel
Mixed-layer LCL
2947 m above ground
0-6 km bulk shear
58 kt
0-1 km storm-relative helicity
39 m²/s²
0-3 km storm-relative helicity
81 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

As transmitted, in the capitals the NWS used until 2016.

286 
WWUS43 KDMX 021034
WSWDMX

URGENT - WINTER WEATHER MESSAGE
NATIONAL WEATHER SERVICE DES MOINES IA
434 AM CST THU FEB 2 2012

...HEAVY SNOW POSSIBLE ACROSS CENTRAL TO WESTERN IOWA LATE FRIDAY
NIGHT INTO SATURDAY...

.A STRONG LOW PRESSURE SYSTEM WILL TRACK ACROSS KANSAS AND INTO
CENTRAL MISSOURI THROUGHOUT THE DAY FRIDAY AND INTO SATURDAY. RAIN
WILL BEGIN OVER THE AREA BY FRIDAY AFTERNOON BEFORE COLDER
TEMPERATURES BEGIN TO FILTER INTO THE STATE FRIDAY NIGHT. A RAIN
AND SNOW MIX IS FORECAST FRIDAY EVENING BEFORE SWITCHING OVER TO
ALL SNOW DURING THE OVERNIGHT HOURS INTO SATURDAY MORNING.
MODERATE TO LOCALLY HEAVY SNOW IS POSSIBLE BY SATURDAY MORNING.
SNOW WILL BEGIN TO TAPER OFF LATE SATURDAY NIGHT BUT GUSTY
NORTHEAST WINDS ARE FORECAST TO CONTINUE INTO SUNDAY MORNING.

IAZ023-024-033>038-044>049-057>060-070>072-081-082-021845-
/O.NEW.KDMX.WS.A.0001.120204T0300Z-120205T1200Z/
POCAHONTAS-HUMBOLDT-SAC-CALHOUN-WEBSTER-HAMILTON-HARDIN-GRUNDY-
CRAWFORD-CARROLL-GREENE-BOONE-STORY-MARSHALL-AUDUBON-GUTHRIE-
DALLAS-POLK-CASS-ADAIR-MADISON-ADAMS-UNION-
INCLUDING THE CITIES OF...POCAHONTAS...HUMBOLDT...SAC CITY...
ROCKWELL CITY...FORT DODGE...WEBSTER CITY...ELDORA...
GRUNDY CENTER...DENISON...CARROLL...JEFFERSON...BOONE...AMES...
MARSHALLTOWN...AUDUBON...GUTHRIE CENTER...ADEL...DES MOINES...
ATLANTIC...GREENFIELD...WINTERSET...CORNING...CRESTON
434 AM CST THU FEB 2 2012

...WINTER STORM WATCH IN EFFECT FROM FRIDAY EVENING THROUGH LATE
SATURDAY NIGHT...

THE NATIONAL WEATHER SERVICE IN DES MOINES HAS ISSUED A WINTER
STORM WATCH...WHICH IS IN EFFECT FROM FRIDAY EVENING THROUGH LATE
SATURDAY NIGHT. 

* TIMING...A MIX OF RAIN AND SNOW WILL DEVELOP OVER THE AREA
  FRIDAY EVENING BEFORE SWITCHING OVER TO ALL SNOW PAST MIDNIGHT
  INTO THE EARLY MORNING HOURS SATURDAY. THE HEAVIEST SNOWFALL
  ACCUMULATIONS ARE LIKELY TO OCCUR SATURDAY MORNING THROUGH EARLY
  SATURDAY AFTERNOON...BEFORE THE SNOW BEGINS TO DIMINISH SATURDAY
  EVENING.

* STORM TOTAL SNOW...SNOWFALL AMOUNTS FROM 4 TO 7 INCHES ARE
  ANTICIPATED ACROSS THE WATCH AREA BY SATURDAY EVENING.

* WINDS/VISIBILITY...NORTHEAST WINDS AT 20 TO 30 MPH WITH POSSIBLY
  HIGHER GUSTS WILL CAUSE SIGNIFICANT VISIBILITY RESTRICTIONS AND
  DRIFTING OF SNOW ON SATURDAY AND SATURDAY NIGHT.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A WINTER STORM WATCH MEANS THERE IS A POTENTIAL FOR SIGNIFICANT
SNOW...SLEET...OR ICE ACCUMULATIONS THAT MAY IMPACT TRAVEL.
CONTINUE TO MONITOR THE LATEST FORECASTS.

&&

$$

PODRAZIK
8 follow-up statements
780 
WWUS43 KDMX 021600
WSWDMX

URGENT - WINTER WEATHER MESSAGE
NATIONAL WEATHER SERVICE DES MOINES IA
1000 AM CST THU FEB 2 2012

...HEAVY SNOW POSSIBLE ACROSS CENTRAL TO WESTERN IOWA LATE FRIDAY
NIGHT INTO SATURDAY...

.A STRONG LOW PRESSURE SYSTEM WILL TRACK ACROSS KANSAS AND INTO
CENTRAL MISSOURI THROUGHOUT THE DAY FRIDAY AND INTO SATURDAY.
RAIN WILL BEGIN OVER THE AREA BY FRIDAY AFTERNOON BEFORE COLDER
TEMPERATURES BEGIN TO FILTER INTO THE STATE FRIDAY NIGHT. A RAIN
AND SNOW MIX IS FORECAST FRIDAY EVENING BEFORE SWITCHING OVER TO
ALL SNOW DURING THE OVERNIGHT HOURS INTO SATURDAY MORNING.
MODERATE TO LOCALLY HEAVY SNOW IS POSSIBLE BY SATURDAY MORNING.
SNOW WILL BEGIN TO TAPER OFF LATE SATURDAY NIGHT BUT GUSTY
NORTHEAST WINDS ARE FORECAST TO CONTINUE INTO SUNDAY MORNING.

IAZ023-024-033>038-044>049-057>060-070>072-081-082-030000-
/O.CON.KDMX.WS.A.0001.120204T0300Z-120205T1200Z/
POCAHONTAS-HUMBOLDT-SAC-CALHOUN-WEBSTER-HAMILTON-HARDIN-GRUNDY-
CRAWFORD-CARROLL-GREENE-BOONE-STORY-MARSHALL-AUDUBON-GUTHRIE-
DALLAS-POLK-CASS-ADAIR-MADISON-ADAMS-UNION-
INCLUDING THE CITIES OF...POCAHONTAS...HUMBOLDT...SAC CITY...
ROCKWELL CITY...FORT DODGE...WEBSTER CITY...ELDORA...
GRUNDY CENTER...DENISON...CARROLL...JEFFERSON...BOONE...AMES...
MARSHALLTOWN...AUDUBON...GUTHRIE CENTER...ADEL...DES MOINES...
ATLANTIC...GREENFIELD...WINTERSET...CORNING...CRESTON
1000 AM CST THU FEB 2 2012

...WINTER STORM WATCH REMAINS IN EFFECT FROM FRIDAY EVENING
THROUGH LATE SATURDAY NIGHT...

* TIMING...A MIX OF RAIN AND SNOW WILL DEVELOP OVER THE AREA 
  FRIDAY EVENING BEFORE SWITCHING OVER TO ALL SNOW PAST MIDNIGHT 
  INTO THE EARLY MORNING HOURS SATURDAY. THE HEAVIEST SNOWFALL 
  ACCUMULATIONS ARE LIKELY TO OCCUR SATURDAY MORNING THROUGH 
  EARLY SATURDAY AFTERNOON...BEFORE THE SNOW BEGINS TO DIMINISH 
  SATURDAY EVENING. 

* STORM TOTAL SNOW...SNOWFALL AMOUNTS FROM 4 TO 7 INCHES ARE 
  ANTICIPATED ACROSS THE WATCH AREA BY SATURDAY EVENING. 

* WINDS/VISIBILITY...NORTHEAST WINDS AT 20 TO 30 MPH WITH 
  POSSIBLY HIGHER GUSTS WILL CAUSE SIGNIFICANT VISIBILITY 
  RESTRICTIONS AND DRIFTING OF SNOW ON SATURDAY AND SATURDAY 
  NIGHT. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A WINTER STORM WATCH MEANS THERE IS A POTENTIAL FOR SIGNIFICANT
SNOW...SLEET...OR ICE ACCUMULATIONS THAT MAY IMPACT TRAVEL.
CONTINUE TO MONITOR THE LATEST FORECASTS.

&&

$$

FAB
727 
WWUS43 KDMX 021725
WSWDMX

URGENT - WINTER WEATHER MESSAGE
NATIONAL WEATHER SERVICE DES MOINES IA
1125 AM CST THU FEB 2 2012

...HEAVY SNOW POSSIBLE ACROSS SOUTHWEST AND PART OF CENTRAL IOWA
LATE FRIDAY NIGHT INTO SATURDAY...

.A STRONG LOW PRESSURE SYSTEM WILL TRACK ACROSS KANSAS AND INTO
CENTRAL MISSOURI THROUGHOUT THE DAY FRIDAY AND INTO SATURDAY.
RAIN WILL BEGIN OVER THE AREA BY FRIDAY AFTERNOON BEFORE COLDER
TEMPERATURES BEGIN TO FILTER INTO THE STATE FRIDAY NIGHT. A RAIN
AND SNOW MIX IS FORECAST FRIDAY EVENING BEFORE SWITCHING OVER TO
ALL SNOW DURING THE OVERNIGHT HOURS INTO SATURDAY MORNING.
MODERATE TO LOCALLY HEAVY SNOW IS POSSIBLE BY SATURDAY MORNING.
SNOW WILL BEGIN TO TAPER OFF LATE SATURDAY NIGHT BUT GUSTY
NORTHEAST WINDS ARE FORECAST TO CONTINUE INTO SUNDAY MORNING.

IAZ023-024-033>038-048-049-021830-
/O.CAN.KDMX.WS.A.0001.120204T0300Z-120205T1200Z/
POCAHONTAS-HUMBOLDT-SAC-CALHOUN-WEBSTER-HAMILTON-HARDIN-GRUNDY-
STORY-MARSHALL-
INCLUDING THE CITIES OF...POCAHONTAS...HUMBOLDT...SAC CITY...
ROCKWELL CITY...FORT DODGE...WEBSTER CITY...ELDORA...
GRUNDY CENTER...AMES...MARSHALLTOWN
1125 AM CST THU FEB 2 2012

...WINTER STORM WATCH IS CANCELLED...

THE NATIONAL WEATHER SERVICE IN DES MOINES HAS CANCELLED THE
WINTER STORM WATCH. 

THE STORM SYSTEM EXPECTED TO AFFECT THE AREA WILL TRACK FARTHER
SOUTH THAN PREVIOUSLY EXPECTED. WINTRY PRECIPITATION WILL FALL
THIS WEEKEND...BUT HEAVY SNOW IS NOT EXPECTED.


$$

IAZ092-093-030130-
/O.EXA.KDMX.WS.A.0001.120204T0300Z-120205T1200Z/
TAYLOR-RINGGOLD-
INCLUDING THE CITIES OF...BEDFORD...MOUNT AYR
1125 AM CST THU FEB 2 2012

...WINTER STORM WATCH IN EFFECT FROM FRIDAY EVENING THROUGH LATE
SATURDAY NIGHT...

THE NATIONAL WEATHER SERVICE IN DES MOINES HAS ISSUED A WINTER
STORM WATCH...WHICH IS IN EFFECT FROM FRIDAY EVENING THROUGH LATE
SATURDAY NIGHT. 

* TIMING...A MIX OF RAIN AND SNOW WILL DEVELOP OVER THE AREA BY
  MIDNIGHT FRIDAY NIGHT BEFORE SWITCHING OVER TO ALL SNOW LATE
  FRIDAY NIGHT INTO THE EARLY MORNING HOURS SATURDAY. THE HEAVIEST
  SNOWFALL ACCUMULATIONS ARE LIKELY TO OCCUR SATURDAY MORNING
  THROUGH EARLY SATURDAY AFTERNOON...BEFORE THE SNOW BEGINS TO
  DIMINISH SATURDAY EVENING.

* STORM TOTAL SNOW...SNOWFALL AMOUNTS FROM 4 TO 7 INCHES ARE 
  ANTICIPATED ACROSS THE WATCH AREA BY SATURDAY EVENING. 

* WINDS/VISIBILITY...NORTHEAST WINDS AT 20 TO 30 MPH WITH 
  POSSIBLY HIGHER GUSTS WILL CAUSE SIGNIFICANT VISIBILITY 
  RESTRICTIONS AND DRIFTING OF SNOW ON SATURDAY AND SATURDAY 
  NIGHT. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A WINTER STORM WATCH MEANS THERE IS A POTENTIAL FOR SIGNIFICANT
SNOW...SLEET...OR ICE ACCUMULATIONS THAT MAY IMPACT TRAVEL.
CONTINUE TO MONITOR THE LATEST FORECASTS.

&&

$$

IAZ044>047-057>060-070>072-081-082-030130-
/O.CON.KDMX.WS.A.0001.120204T0300Z-120205T1200Z/
CRAWFORD-CARROLL-GREENE-BOONE-AUDUBON-GUTHRIE-DALLAS-POLK-CASS-
ADAIR-MADISON-ADAMS-UNION-
INCLUDING THE CITIES OF...DENISON...CARROLL...JEFFERSON...BOONE...
AUDUBON...GUTHRIE CENTER...ADEL...DES MOINES...ATLANTIC...
GREENFIELD...WINTERSET...CORNING...CRESTON
1125 AM CST THU FEB 2 2012

...WINTER STORM WATCH REMAINS IN EFFECT FROM FRIDAY EVENING
THROUGH LATE SATURDAY NIGHT...

* TIMING...A MIX OF RAIN AND SNOW WILL DEVELOP OVER THE AREA 
  FRIDAY EVENING BEFORE SWITCHING OVER TO ALL SNOW PAST MIDNIGHT 
  INTO THE EARLY MORNING HOURS SATURDAY. THE HEAVIEST SNOWFALL 
  ACCUMULATIONS ARE LIKELY TO OCCUR SATURDAY MORNING THROUGH 
  EARLY SATURDAY AFTERNOON...BEFORE THE SNOW BEGINS TO DIMINISH 
  SATURDAY EVENING. 

* STORM TOTAL SNOW...SNOWFALL AMOUNTS FROM 4 TO 7 INCHES ARE 
  ANTICIPATED ACROSS THE WATCH AREA BY SATURDAY EVENING. 

* WINDS/VISIBILITY...NORTHEAST WINDS AT 20 TO 30 MPH WITH 
  POSSIBLY HIGHER GUSTS WILL CAUSE SIGNIFICANT VISIBILITY 
  RESTRICTIONS AND DRIFTING OF SNOW ON SATURDAY AND SATURDAY 
  NIGHT. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A WINTER STORM WATCH MEANS THERE IS A POTENTIAL FOR SIGNIFICANT
SNOW...SLEET...OR ICE ACCUMULATIONS THAT MAY IMPACT TRAVEL.
CONTINUE TO MONITOR THE LATEST FORECASTS.

&&

$$
700 
WWUS43 KDMX 022142
WSWDMX

URGENT - WINTER WEATHER MESSAGE
NATIONAL WEATHER SERVICE DES MOINES IA
342 PM CST THU FEB 2 2012

...HEAVY SNOW POSSIBLE ACROSS SOUTHWEST IOWA LATE FRIDAY NIGHT
INTO SATURDAY...

.A STRONG LOW PRESSURE SYSTEM WILL TRACK ACROSS KANSAS AND INTO
CENTRAL MISSOURI THROUGHOUT THE DAY FRIDAY AND INTO SATURDAY.
RAIN WILL BEGIN OVER THE AREA BY FRIDAY AFTERNOON BEFORE COLDER
TEMPERATURES BEGIN TO FILTER INTO THE STATE FRIDAY NIGHT. A RAIN
AND SNOW MIX IS FORECAST FRIDAY EVENING BEFORE SWITCHING OVER TO
ALL SNOW DURING THE OVERNIGHT HOURS INTO SATURDAY. MODERATE TO
LOCALLY HEAVY SNOW IS POSSIBLE BY SATURDAY MORNING. SNOW WILL
BEGIN TO TAPER OFF LATE SATURDAY NIGHT BUT GUSTY NORTHEAST WINDS
ARE FORECAST TO CONTINUE INTO SUNDAY MORNING.

IAZ047-060-093-022245-
/O.CAN.KDMX.WS.A.0001.120204T0300Z-120205T1200Z/
BOONE-POLK-RINGGOLD-
INCLUDING THE CITIES OF...BOONE...DES MOINES...MOUNT AYR
342 PM CST THU FEB 2 2012

...WINTER STORM WATCH IS CANCELLED...

THE NATIONAL WEATHER SERVICE IN DES MOINES HAS CANCELLED THE
WINTER STORM WATCH. 

SNOW IS EXPECTED TO MOVE INTO THE AREA LATE FRIDAY NIGHT INTO
SATURDAY...HOWEVER HEAVY SNOW IS NOT EXPECTED. THE STORM SYSTEM
WILL BE MORE SIGNIFICANT TO THE SOUTH AND WEST OF THE AREA.


$$

IAZ044>046-057>059-070>072-081-082-092-030545-
/O.CON.KDMX.WS.A.0001.120204T0300Z-120205T1200Z/
CRAWFORD-CARROLL-GREENE-AUDUBON-GUTHRIE-DALLAS-CASS-ADAIR-MADISON-
ADAMS-UNION-TAYLOR-
INCLUDING THE CITIES OF...DENISON...CARROLL...JEFFERSON...
AUDUBON...GUTHRIE CENTER...ADEL...ATLANTIC...GREENFIELD...
WINTERSET...CORNING...CRESTON...BEDFORD
342 PM CST THU FEB 2 2012

...WINTER STORM WATCH REMAINS IN EFFECT FROM FRIDAY EVENING
THROUGH LATE SATURDAY NIGHT...

* TIMING...A MIX OF RAIN AND SNOW WILL DEVELOP OVER THE AREA
  FRIDAY EVENING BEFORE SWITCHING OVER TO ALL SNOW AFTER MIDNIGHT
  FRIDAY NIGHT INTO THE EARLY MORNING HOURS SATURDAY. THE HEAVIEST
  SNOWFALL ACCUMULATIONS ARE LIKELY TO OCCUR SATURDAY MORNING
  THROUGH EARLY SATURDAY AFTERNOON...BEFORE THE SNOW BEGINS TO
  DIMINISH SATURDAY EVENING.

* STORM TOTAL SNOW...SNOWFALL AMOUNTS FROM 4 TO 6 INCHES ARE
  ANTICIPATED ACROSS THE WATCH AREA BY SATURDAY EVENING WITH
  ISOLATED HEAVIER AMOUNTS.

* WINDS/VISIBILITY...NORTHEAST WINDS AT 15 TO 25 MPH WITH A FEW
  HIGHER GUSTS WILL CAUSE VISIBILITY RESTRICTIONS AND CONSIDERABLE DRIFTING
  OF SNOW ON SATURDAY AND SATURDAY NIGHT.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A WINTER STORM WATCH MEANS THERE IS A POTENTIAL FOR SIGNIFICANT
SNOW...SLEET...OR ICE ACCUMULATIONS THAT MAY IMPACT TRAVEL.
CONTINUE TO MONITOR THE LATEST FORECASTS.

&&

$$
443 
WWUS43 KDMX 030336
WSWDMX

URGENT - WINTER WEATHER MESSAGE
NATIONAL WEATHER SERVICE DES MOINES IA
936 PM CST THU FEB 2 2012

...HEAVY SNOW POSSIBLE ACROSS WEST CENTRAL AND SOUTHWEST IOWA
LATE FRIDAY NIGHT INTO SATURDAY...

.A STRONG STORM SYSTEM WILL MOVE FROM THE CENTRAL PLAINS INTO THE
MIDWEST EARLY THIS WEEKEND. RAIN IS EXPECTED TO MOVE INTO SOUTHERN
IOWA BY FRIDAY AND INTO CENTRAL IOWA BY FRIDAY NIGHT. THE RAIN
WILL TRANSITION FROM RAIN TO SNOW IN WESTERN IOWA FRIDAY NIGHT
WITH TRANSITIONS FARTHER EAST AND SOUTH ON SATURDAY. MODERATE TO
HEAVY SNOWFALL WILL BE POSSIBLE IN THE WATCH AREA BY SATURDAY EVENING.

IAZ044>046-057>059-070>072-081-082-092-031100-
/O.CON.KDMX.WS.A.0001.120204T0300Z-120205T1200Z/
CRAWFORD-CARROLL-GREENE-AUDUBON-GUTHRIE-DALLAS-CASS-ADAIR-MADISON-
ADAMS-UNION-TAYLOR-
INCLUDING THE CITIES OF...DENISON...CARROLL...JEFFERSON...
AUDUBON...GUTHRIE CENTER...ADEL...ATLANTIC...GREENFIELD...
WINTERSET...CORNING...CRESTON...BEDFORD
936 PM CST THU FEB 2 2012

...WINTER STORM WATCH REMAINS IN EFFECT FROM FRIDAY EVENING
THROUGH LATE SATURDAY NIGHT...

* TIMING...RAIN IS EXPECTED ACROSS THE AREA ON FRIDAY EVENING. A
  GRADUAL TRANSITION TO SNOW WILL BEGIN FRIDAY NIGHT IN WEST
  CENTRAL IOWA WITH THE RAIN AND SNOW LINE GRADUALLY PUSHING
  SOUTHEAST LATE FRIDAY NIGHT INTO SATURDAY. MUCH OF THE WATCH
  AREA WILL SEE SNOW BY MIDDAY SATURDAY WITH THE SNOW PERSISTING
  UNTIL SLOWLY DIMINISHING SATURDAY NIGHT.  

* STORM TOTAL SNOW...SNOWFALL AMOUNTS FROM 4 TO 6 INCHES ARE
  ANTICIPATED ACROSS THE WATCH AREA BY SATURDAY EVENING WITH
  ISOLATED HEAVIER AMOUNTS. 

* WINDS/VISIBILITY...NORTHEAST WINDS AT 15 TO 25 MPH WITH A FEW 
  HIGHER GUSTS WILL CAUSE VISIBILITY RESTRICTIONS AND 
  CONSIDERABLE DRIFTING OF SNOW ON SATURDAY AND SATURDAY NIGHT. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A WINTER STORM WATCH MEANS THERE IS A POTENTIAL FOR SIGNIFICANT
SNOW...SLEET...OR ICE ACCUMULATIONS THAT MAY IMPACT TRAVEL.
CONTINUE TO MONITOR THE LATEST FORECASTS.

&&

$$

CC
981 
WWUS43 KDMX 031037
WSWDMX

URGENT - WINTER WEATHER MESSAGE
NATIONAL WEATHER SERVICE DES MOINES IA
437 AM CST FRI FEB 3 2012

...HEAVY SNOW POSSIBLE ACROSS PORTIONS OF CENTRAL TO SOUTHWEST 
IOWA LATE TONIGHT THROUGH SATURDAY...

.A STRONG STORM SYSTEM IS FORECAST TO CONTINUE TO TRACK ACROSS THE
CENTRAL PLAINS AND INTO THE MIDWEST AND WILL BRING A CHANCE OF
RAIN TO SOUTHERN IOWA THROUGHOUT THE DAY TODAY AND INTO THIS
EVENING. COLDER TEMPERATURES WILL BEGIN TO FILTER INTO THE STATE
AS THE SURFACE LOW SHIFTS EASTWARD TONIGHT. THIS WILL ALLOW FOR A
TRANSITION PERIOD FROM RAIN TO SNOW LATE TONIGHT INTO THE EARLY
MORNING HOURS SATURDAY. A MODERATE TO LOCALLY HEAVY BAND OF SNOW
WILL SET UP FROM CENTRAL TO WEST CENTRAL IOWA BY SATURDAY
MORNING. IN ADDITION TO THE FALLING SNOW...GUSTY NORTHEAST WINDS
WILL LEAD TO VISIBILITY RESTRICTIONS AND POTENTIALLY SIGNIFICANT
BLOWING AND DRIFTING OF SNOW.

IAZ047-048-060-031845-
/O.EXB.KDMX.WS.A.0001.120204T0600Z-120205T1200Z/
BOONE-STORY-POLK-
INCLUDING THE CITIES OF...BOONE...AMES...DES MOINES
437 AM CST FRI FEB 3 2012

...WINTER STORM WATCH IN EFFECT FROM LATE TONIGHT THROUGH LATE
SATURDAY NIGHT...

THE NATIONAL WEATHER SERVICE IN DES MOINES HAS ISSUED A WINTER
STORM WATCH...WHICH IS IN EFFECT FROM LATE TONIGHT THROUGH LATE
SATURDAY NIGHT. 

* TIMING...RAIN WILL SWITCH OVER TO ALL SNOW PAST MIDNIGHT TONIGHT
  INTO THE EARLY MORNING HOURS SATURDAY. THE HEAVIEST SNOW IS
  LIKELY TO OCCUR BEFORE SUNRISE SATURDAY MORNING THROUGH MIDDAY
  SATURDAY. SNOW WILL BEGIN TO DIMINISH SATURDAY EVENING.

* STORM TOTAL SNOW...SNOWFALL AMOUNTS FROM 4 TO 6 INCHES ARE
  ANTICIPATED WITH LOCALLY HEAVIER AMOUNTS ARE POSSIBLE.

* WINDS/VISIBILITY...NORTHEAST WINDS AT 15 TO 30 MPH WITH A FEW
  HIGHER GUSTS WILL CAUSE VISIBILITY RESTRICTIONS AND CONSIDERABLE
  DRIFTING OF SNOW ON SATURDAY AND SATURDAY NIGHT.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A WINTER STORM WATCH MEANS THERE IS A POTENTIAL FOR SIGNIFICANT
SNOW...SLEET...OR ICE ACCUMULATIONS THAT MAY IMPACT TRAVEL.
CONTINUE TO MONITOR THE LATEST FORECASTS.

&&

$$

IAZ044>046-057>059-070>072-081-082-092-031845-
/O.EXT.KDMX.WS.A.0001.120204T0600Z-120205T1200Z/
CRAWFORD-CARROLL-GREENE-AUDUBON-GUTHRIE-DALLAS-CASS-ADAIR-MADISON-
ADAMS-UNION-TAYLOR-
INCLUDING THE CITIES OF...DENISON...CARROLL...JEFFERSON...
AUDUBON...GUTHRIE CENTER...ADEL...ATLANTIC...GREENFIELD...
WINTERSET...CORNING...CRESTON...BEDFORD
437 AM CST FRI FEB 3 2012

...WINTER STORM WATCH NOW IN EFFECT FROM LATE TONIGHT THROUGH
LATE SATURDAY NIGHT...

* TIMING...A GRADUAL TRANSITION FROM RAIN TO SNOW WILL BEGIN LATE
  THIS EVENING INTO THE OVERNIGHT HOURS. MUCH OF THE WATCH AREA
  WILL SEE ALL SNOW BY EARLY SATURDAY MORNING WHERE THE HEAVIEST
  SNOWFALL AMOUNTS ARE LIKELY TO OCCUR. SNOW WILL BEGIN TO
  DIMINISH SATURDAY EVENING.

* STORM TOTAL SNOW...SNOWFALL AMOUNTS FROM 5 TO 8 INCHES WITH
  LOCALLY HEAVIER AMOUNTS ARE POSSIBLE.

* WINDS/VISIBILITY...NORTHEAST WINDS AT 20 TO 30 MPH WITH A FEW
  HIGHER GUSTS WILL CAUSE VISIBILITY RESTRICTIONS AND CONSIDERABLE
  DRIFTING OF SNOW ON SATURDAY AND SATURDAY NIGHT.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A WINTER STORM WATCH MEANS THERE IS A POTENTIAL FOR SIGNIFICANT
SNOW...SLEET...OR ICE ACCUMULATIONS THAT MAY IMPACT TRAVEL.
CONTINUE TO MONITOR THE LATEST FORECASTS.

&&

$$

PODRAZIK
888 
WWUS43 KDMX 031103
WSWDMX

URGENT - WINTER WEATHER MESSAGE
NATIONAL WEATHER SERVICE DES MOINES IA
503 AM CST FRI FEB 3 2012

...HEAVY SNOW POSSIBLE ACROSS PORTIONS OF CENTRAL TO SOUTHWEST
IOWA LATE TONIGHT THROUGH SATURDAY...

.A STRONG STORM SYSTEM IS FORECAST TO CONTINUE TO TRACK ACROSS
THE CENTRAL PLAINS AND INTO THE MIDWEST AND WILL BRING A CHANCE
OF RAIN TO SOUTHERN IOWA THROUGHOUT THE DAY TODAY AND INTO THIS
EVENING. COLDER TEMPERATURES WILL BEGIN TO FILTER INTO THE STATE
AS THE SURFACE LOW SHIFTS EASTWARD TONIGHT. THIS WILL ALLOW FOR A
TRANSITION PERIOD FROM RAIN TO SNOW LATE TONIGHT INTO THE EARLY
MORNING HOURS SATURDAY. A MODERATE TO LOCALLY HEAVY BAND OF SNOW
WILL SET UP FROM CENTRAL TO WEST CENTRAL IOWA BY SATURDAY
MORNING. IN ADDITION TO THE FALLING SNOW...GUSTY NORTHEAST WINDS
WILL LEAD TO VISIBILITY RESTRICTIONS AND POTENTIALLY SIGNIFICANT
BLOWING AND DRIFTING OF SNOW.

IAZ044>048-057>060-070>072-081-082-092-031915-
/O.CON.KDMX.WS.A.0001.120204T0600Z-120205T1200Z/
CRAWFORD-CARROLL-GREENE-BOONE-STORY-AUDUBON-GUTHRIE-DALLAS-POLK-
CASS-ADAIR-MADISON-ADAMS-UNION-TAYLOR-
INCLUDING THE CITIES OF...DENISON...CARROLL...JEFFERSON...BOONE...
AMES...AUDUBON...GUTHRIE CENTER...ADEL...DES MOINES...ATLANTIC...
GREENFIELD...WINTERSET...CORNING...CRESTON...BEDFORD
503 AM CST FRI FEB 3 2012

...WINTER STORM WATCH REMAINS IN EFFECT FROM LATE TONIGHT THROUGH
LATE SATURDAY NIGHT...

* TIMING...A GRADUAL TRANSITION FROM RAIN TO SNOW WILL BEGIN 
  LATE THIS EVENING INTO THE OVERNIGHT HOURS. MUCH OF THE WATCH 
  AREA WILL SEE ALL SNOW BY EARLY SATURDAY MORNING WHERE THE 
  HEAVIEST SNOWFALL AMOUNTS ARE LIKELY TO OCCUR. SNOW WILL BEGIN 
  TO DIMINISH SATURDAY EVENING. 

* STORM TOTAL SNOW...SNOWFALL AMOUNTS FROM 4 TO 8 INCHES WITH
  LOCALLY HEAVIER AMOUNTS ARE POSSIBLE.

* WINDS/VISIBILITY...NORTHEAST WINDS AT 20 TO 30 MPH WITH A FEW 
  HIGHER GUSTS WILL CAUSE VISIBILITY RESTRICTIONS AND 
  CONSIDERABLE DRIFTING OF SNOW ON SATURDAY AND SATURDAY NIGHT. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A WINTER STORM WATCH MEANS THERE IS A POTENTIAL FOR SIGNIFICANT
SNOW...SLEET...OR ICE ACCUMULATIONS THAT MAY IMPACT TRAVEL.
CONTINUE TO MONITOR THE LATEST FORECASTS.

&&

$$

PODRAZIK
830 
WWUS43 KDMX 031715
WSWDMX

URGENT - WINTER WEATHER MESSAGE
NATIONAL WEATHER SERVICE DES MOINES IA
1115 AM CST FRI FEB 3 2012

...HEAVY SNOW POSSIBLE ACROSS PORTIONS OF CENTRAL TO SOUTHWEST
IOWA LATE TONIGHT THROUGH SATURDAY...

.A STRONG STORM SYSTEM IS FORECAST TO CONTINUE TO TRACK ACROSS
THE CENTRAL PLAINS AND INTO THE MIDWEST AND WILL BRING A CHANCE
OF RAIN TO SOUTHERN IOWA THROUGHOUT THE DAY TODAY AND INTO THIS
EVENING. COLDER TEMPERATURES WILL BEGIN TO FILTER INTO THE STATE
AS THE SURFACE LOW SHIFTS EASTWARD TONIGHT. THIS WILL ALLOW FOR A
TRANSITION PERIOD FROM RAIN TO SNOW LATE TONIGHT INTO THE EARLY
MORNING HOURS SATURDAY. A MODERATE TO LOCALLY HEAVY BAND OF SNOW
WILL SET UP FROM CENTRAL TO WEST CENTRAL IOWA BY SATURDAY
MORNING. IN ADDITION TO THE FALLING SNOW...GUSTY NORTHEAST WINDS
WILL LEAD TO VISIBILITY RESTRICTIONS AND POTENTIALLY SIGNIFICANT
BLOWING AND DRIFTING OF SNOW.

IAZ044>048-057>060-070>072-081-082-092-040115-
/O.CON.KDMX.WS.A.0001.120204T0600Z-120205T1200Z/
CRAWFORD-CARROLL-GREENE-BOONE-STORY-AUDUBON-GUTHRIE-DALLAS-POLK-
CASS-ADAIR-MADISON-ADAMS-UNION-TAYLOR-
INCLUDING THE CITIES OF...DENISON...CARROLL...JEFFERSON...BOONE...
AMES...AUDUBON...GUTHRIE CENTER...ADEL...DES MOINES...ATLANTIC...
GREENFIELD...WINTERSET...CORNING...CRESTON...BEDFORD
1115 AM CST FRI FEB 3 2012

...WINTER STORM WATCH REMAINS IN EFFECT FROM LATE TONIGHT THROUGH
LATE SATURDAY NIGHT...

* TIMING...A GRADUAL TRANSITION FROM RAIN TO SNOW WILL BEGIN 
  LATE THIS EVENING INTO THE OVERNIGHT HOURS. MUCH OF THE WATCH 
  AREA WILL SEE ALL SNOW BY EARLY SATURDAY MORNING WHERE THE 
  HEAVIEST SNOWFALL AMOUNTS ARE LIKELY TO OCCUR. SNOW WILL BEGIN 
  TO DIMINISH SATURDAY EVENING. 

* STORM TOTAL SNOW...SNOWFALL AMOUNTS FROM 4 TO 8 INCHES WITH 
  LOCALLY HEAVIER AMOUNTS ARE POSSIBLE. 

* WINDS/VISIBILITY...NORTHEAST WINDS AT 20 TO 30 MPH WITH A FEW 
  HIGHER GUSTS WILL CAUSE VISIBILITY RESTRICTIONS AND 
  CONSIDERABLE DRIFTING OF SNOW ON SATURDAY AND SATURDAY NIGHT. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A WINTER STORM WATCH MEANS THERE IS A POTENTIAL FOR SIGNIFICANT
SNOW...SLEET...OR ICE ACCUMULATIONS THAT MAY IMPACT TRAVEL.
CONTINUE TO MONITOR THE LATEST FORECASTS.

&&

$$

KS
275 
WWUS43 KDMX 032136
WSWDMX

URGENT - WINTER WEATHER MESSAGE
NATIONAL WEATHER SERVICE DES MOINES IA
336 PM CST FRI FEB 3 2012

...HEAVY SNOW EXPECTED ACROSS PORTIONS OF CENTRAL TO SOUTHWEST
IOWA LATE TONIGHT THROUGH SATURDAY...

.A STRONG STORM SYSTEM IS FORECAST TO CONTINUE TO TRACK ACROSS
THE CENTRAL PLAINS AND INTO THE MIDWEST TONIGHT. RAIN WILL MIX
WITH AND EVENTUALLY CHANGE OVER TO SNOW OVERNIGHT TONIGHT AND INTO
THE EARLY MORNING HOURS SATURDAY. A MODERATE TO LOCALLY HEAVY BAND
OF SNOW WILL SET UP FROM CENTRAL TO WEST CENTRAL IOWA BY SATURDAY
MORNING. IN ADDITION TO THE FALLING SNOW...GUSTY NORTHEAST WINDS
MAY LEAD TO VISIBILITY RESTRICTIONS DUE TO BLOWING AND DRIFTING OF
SNOW.

IAZ044>048-057>060-070>072-081-082-040545-
/O.UPG.KDMX.WS.A.0001.120204T0600Z-120205T1200Z/
/O.NEW.KDMX.WS.W.0002.120204T0600Z-120205T1200Z/
CRAWFORD-CARROLL-GREENE-BOONE-STORY-AUDUBON-GUTHRIE-DALLAS-POLK-
CASS-ADAIR-MADISON-ADAMS-UNION-
INCLUDING THE CITIES OF...DENISON...CARROLL...JEFFERSON...BOONE...
AMES...AUDUBON...GUTHRIE CENTER...ADEL...DES MOINES...ATLANTIC...
GREENFIELD...WINTERSET...CORNING...CRESTON
336 PM CST FRI FEB 3 2012

...WINTER STORM WARNING IN EFFECT FROM MIDNIGHT TONIGHT TO 6 AM
CST SUNDAY...

THE NATIONAL WEATHER SERVICE IN DES MOINES HAS ISSUED A WINTER
STORM WARNING FOR HEAVY SNOW...WHICH IS IN EFFECT FROM MIDNIGHT
TONIGHT TO 6 AM CST SUNDAY. THE WINTER STORM WATCH IS NO LONGER IN
EFFECT.

* TIMING...A GRADUAL TRANSITION FROM RAIN TO SNOW WILL BEGIN LATE
  THIS EVENING INTO THE OVERNIGHT HOURS. MUCH OF THE WARNED AREA
  WILL SEE ALL SNOW BY EARLY SATURDAY MORNING. A NARROW BAND OF
  HEAVY SNOW IS EXPECTED TO SET UP ACROSS CENTRAL IOWA DURING THE
  DAY ON SATURDAY. SNOW WILL BEGIN TO DIMINISH SATURDAY EVENING.

* STORM TOTAL SNOW...SNOWFALL AMOUNTS FROM 4 TO 8 INCHES WITH 
  LOCALLY HEAVIER AMOUNTS ARE POSSIBLE. 

* WINDS/VISIBILITY...NORTHEAST WINDS OF 20 TO 30 MPH WITH A FEW
  HIGHER GUSTS WILL CAUSE VISIBILITY RESTRICTIONS AND DRIFTING OF
  SNOW ON SATURDAY AND SATURDAY NIGHT.

* IMPACTS...HEAVY SNOW WILL MAKE TRAVEL DANGEROUS ACROSS THE
  WARNED AREA. THE FALLING SNOW...COMBINED WITH STRONG
  WINDS...WILL LEAD TO REDUCED VISIBILITIES. ROADS WILL LIKELY
  BECOME SLIPPERY AS THE WET SNOW FREEZES TO THE PAVEMENT.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A WINTER STORM WARNING FOR HEAVY SNOW MEANS SEVERE WINTER WEATHER
CONDITIONS ARE EXPECTED OR OCCURRING.  SIGNIFICANT AMOUNTS OF SNOW
ARE FORECAST THAT WILL MAKE TRAVEL DANGEROUS. ONLY TRAVEL IN AN
EMERGENCY. IF YOU MUST TRAVEL...KEEP AN EXTRA
FLASHLIGHT...FOOD...AND WATER IN YOUR VEHICLE IN CASE OF AN
EMERGENCY.

&&

$$

IAZ092-040545-
/O.UPG.KDMX.WS.A.0001.120204T0600Z-120205T1200Z/
/O.NEW.KDMX.WW.Y.0004.120204T0600Z-120205T1200Z/
TAYLOR-
INCLUDING THE CITY OF...BEDFORD
336 PM CST FRI FEB 3 2012

...WINTER WEATHER ADVISORY IN EFFECT FROM MIDNIGHT TONIGHT TO
6 AM CST SUNDAY...

THE NATIONAL WEATHER SERVICE IN DES MOINES HAS ISSUED A WINTER
WEATHER ADVISORY FOR SNOW...WHICH IS IN EFFECT FROM MIDNIGHT
TONIGHT TO 6 AM CST SUNDAY. THE WINTER STORM WATCH IS NO LONGER IN
EFFECT.

* TIMING...A GRADUAL TRANSITION FROM RAIN TO SNOW WILL BEGIN
  DURING THE MORNING ON SATURDAY. SNOW WILL CONTINUE DURING THE
  DAY BEFORE DIMINISHING ON SATURDAY EVENING.

* STORM TOTAL SNOW...SNOWFALL AMOUNTS FROM 1 TO 4 INCHES WITH
  LOCALLY HEAVIER AMOUNTS POSSIBLE.

* WINDS/VISIBILITY...NORTHEAST WINDS AT 20 TO 30 MPH WITH A FEW
  HIGHER GUSTS MAY CAUSE TEMPORARY VISIBILITY RESTRICTIONS AND
  MINOR DRIFTING OF SNOW ON SATURDAY AND SATURDAY NIGHT.

* MAIN IMPACT...PERIODS OF SNOW WILL MAKE AREA ROADS SLICK AND
  LEAD TO REDUCED VISIBILITIES AT TIMES.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A WINTER WEATHER ADVISORY FOR SNOW MEANS THAT PERIODS OF SNOW WILL
CAUSE TRAVEL DIFFICULTIES. BE PREPARED FOR SNOW COVERED ROADS AND
LIMITED VISIBILITY...AND USE CAUTION WHILE DRIVING.

&&

$$

IAZ049-061-073-074-083-084-093-094-040545-
/O.NEW.KDMX.WW.Y.0004.120204T0600Z-120205T1200Z/
MARSHALL-JASPER-WARREN-MARION-CLARKE-LUCAS-RINGGOLD-DECATUR-
INCLUDING THE CITIES OF...MARSHALLTOWN...NEWTON...INDIANOLA...
KNOXVILLE...OSCEOLA...CHARITON...MOUNT AYR...LEON
336 PM CST FRI FEB 3 2012

...WINTER WEATHER ADVISORY IN EFFECT FROM MIDNIGHT TONIGHT TO
6 AM CST SUNDAY...

THE NATIONAL WEATHER SERVICE IN DES MOINES HAS ISSUED A WINTER
WEATHER ADVISORY FOR SNOW...WHICH IS IN EFFECT
FROM MIDNIGHT TONIGHT TO 6 AM CST SUNDAY.

* TIMING...A GRADUAL TRANSITION FROM RAIN TO SNOW WILL BEGIN
  DURING THE MORNING ON SATURDAY. SNOW WILL CONTINUE DURING THE
  DAY BEFORE DIMINISHING ON SATURDAY EVENING. 

* STORM TOTAL SNOW...SNOWFALL AMOUNTS FROM 1 TO 4 INCHES WITH
  LOCALLY HEAVIER AMOUNTS POSSIBLE.

* WINDS/VISIBILITY...NORTHEAST WINDS AT 20 TO 30 MPH WITH A FEW
  HIGHER GUSTS MAY CAUSE TEMPORARY VISIBILITY RESTRICTIONS AND
  MINOR DRIFTING OF SNOW ON SATURDAY AND SATURDAY NIGHT.

* MAIN IMPACT...PERIODS OF SNOW WILL MAKE AREA ROADS SLICK AND
  LEAD TO REDUCED VISIBILITIES AT TIMES.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A WINTER WEATHER ADVISORY FOR SNOW MEANS THAT PERIODS OF SNOW WILL
CAUSE TRAVEL DIFFICULTIES. BE PREPARED FOR SNOW COVERED ROADS AND
LIMITED VISIBILITY...AND USE CAUTION WHILE DRIVING.

&&

$$

What forecasters said that day

The local office's own words before this winter storm 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 winter storm watch went out at Feb 2, 3:54 AM CST, 40 minutes earlier.

Area forecast discussion, Feb 2, 3:54 AM CST, 40 minutes before
AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE DES MOINES IA
354 AM CST THU FEB 2 2012

.SHORT TERM /TODAY/...
HIGH PRESSURE ACROSS THE STATE THIS MORNING WILL GRADUALLY SHIFT
EASTWARD TODAY AS A SIGNIFICANT UPPER LEVEL ANOMALY SHIFTS EAST INTO
NEW MEXICO...IGNITING SFC CYCLOGENESIS THROUGH EASTERN NEW MEXICO
AND THE TEXAS PANHANDLE BY THIS AFTERNOON. DENSE FOG CURRENTLY OVER
THE EASTERN THIRD OF THE STATE. THERE HAS BEEN SOME WESTERN EDGE
EROSION OVER NORTH CENTRAL IA WITH MASON CITY CLEARING OUT.
VISIBILITIES HAVE HOWEVER BEEN ON THE DECLINE THROUGH CENTRAL IA
EARLY THIS MORNING. SOME UNCERTAINTY TO HOW QUICKLY THE FOG WILL
CLEAR OUT TODAY. THE DIFFERENCE TODAY COMPARED TO WEDNESDAY IS THE
SATURATED DEPTH WILL BE VERY SHALLOW WITH DRY AIR ADVECTING IN AT
950 MB EARLY THIS MORNING. SFC FLOW THOUGH WILL BE QUITE LIGHT TO
NON EXISTENT MUCH OF THE DAY OVER THE NORTHEAST. IF THE FOG LINGERS
EAST OF THE AREA THOUGH THE DAY...IT COULD BE ADVECTED BACK IN LATE
IN THE PERIOD AS THE LOW LEVEL FLOW SHIFTS BACK EAST. DENSE FOG
ADVISORY WILL REMAIN IN EFFECT THROUGH 16Z THIS MORNING THOUGH WILL
SHAVE A FEW COUNTIES OFF THE WEST EDGE.

OVERALL...HIGH TEMPERATURES WILL BE SIMILAR TO THOSE ON WEDNESDAY
OVER CENTRAL AND SOUTHERN IA AND A BIT WARMER OVER THE NORTHEAST.
RECORD HIGH TEMPERATURE IN DES MOINES IS 65 AND SHOULD NOT APPROACH
THAT TODAY THOUGH A FOURTH STRAIGHT 60 DEGREES IS POSSIBLE.

.LONG TERM /TONIGHT THROUGH WEDNESDAY/...
A WINTER STORM WATCH WILL BE ISSUED SHORTLY FOR CENTRAL AND WEST
CENTRAL IOWA FRIDAY NIGHT THROUGH SUNDAY MORNING. THE FORECAST
DISCUSSION WILL BE UPDATED FOR THE LONG TERM DISCUSSION SOON.

&&

.AVIATION...02/06Z
DENSE FOG WILL CONTINUE TO PLAGUE THE TERMINALS AND KALO AND KMCW
OVERNIGHT WITH LIGHT WINDS AND MOIST NEAR SURFACE LAYER.  THIS FOG
WILL BE SLOW TO DISSIPATE ON THURSDAY MORNING BUT SHOULD EVENTUALLY
BURN OFF BY EARLY AFTERNOON.  ELSEWHERE...WIDESPREAD VFR CONDITIONS
ARE EXPECTED OVERNIGHT INTO THURSDAY WITH LIGHT WINDS EVENTUALLY
BECOMING EASTERLY BY LATE THURSDAY.  WILL BEGIN TO SEE INCREASING
HIGH CLOUDS ON THURSDAY EVENING AHEAD OF A SYSTEM POISED TO BRING A
DRAMATIC CHANGE TO AVIATION CONDITIONS LATE FRIDAY INTO THE WEEKEND.

&&

.DMX WATCHES/WARNINGS/ADVISORIES...DENSE FOG ADVISORY UNTIL 10 AM FOR
WORTH-CERRO GORDO-FRANKLIN-BUTLER-BREMER-HARDIN-GRUNDY-BLACK HAWK-
STORY-MARSHALL-TAMA-JASPER-POWESHIEK-MARION-MAHASKA-WAPELLO..

&&

SHORT TERM...DONAVON
LONG TERM...PODRAZIK
AVIATION...COGIL
Hazardous weather outlook, Feb 1, 8:05 PM CST, 8 hours 29 minutes before
HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE DES MOINES IA
805 PM CST WED FEB 1 2012

IAZ004-005-015-023-024-033>035-044>047-057>060-070>073-021200-
EMMET-KOSSUTH-PALO ALTO-POCAHONTAS-HUMBOLDT-SAC-CALHOUN-WEBSTER-
CRAWFORD-CARROLL-GREENE-BOONE-AUDUBON-GUTHRIE-DALLAS-POLK-CASS-ADAIR-
MADISON-WARREN-
805 PM CST WED FEB 1 2012

THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF CENTRAL IOWA.

.DAY ONE...TONIGHT

NO HAZARDOUS WEATHER IS EXPECTED AT THIS TIME.

.DAYS TWO THROUGH SEVEN...THURSDAY THROUGH TUESDAY

A STRONG LOW PRESSURE SYSTEM WILL MOVE ACROSS THE STATE THIS
WEEKEND. PRECIPITATION WILL INITIALLY START AS RAIN ON FRIDAY
BEFORE CHANGING OVER TO SNOW ON FRIDAY NIGHT. ACCUMULATING SNOW IS
THEN FORECAST INTO SATURDAY NIGHT. MODERATE TO HEAVY SNOW
ACCUMULATIONS ARE EXPECTED DURING THIS TIME WITH HIGHEST AMOUNTS
EXPECTED NEAR THE HIGHWAY 30 CORRIDOR. THERE IS STILL SOME
UNCERTAINTY WITH THE EXACT TRACK OF THE STORM...AND FORECAST
SNOWFALL AMOUNTS MAY CHANGE SUBSTANTIALLY IN THE NEXT FEW DAYS.
STAY TUNED FOR POSSIBLE WATCHES AND WARNINGS IN THE NEAR FUTURE.

.SPOTTER INFORMATION STATEMENT...

SPOTTER ACTIVATION WILL NOT BE NEEDED...HOWEVER SNOWFALL REPORTS
FROM THE UPCOMING WINTER STORM WOULD BE APPRECIATED.

IAZ074-075-081>086-092>097-021200-
MARION-MAHASKA-ADAMS-UNION-CLARKE-LUCAS-MONROE-WAPELLO-TAYLOR-
RINGGOLD-DECATUR-WAYNE-APPANOOSE-DAVIS-
805 PM CST WED FEB 1 2012

THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF CENTRAL IOWA.

.DAY ONE...TONIGHT

NO HAZARDOUS WEATHER IS EXPECTED AT THIS TIME.

.DAYS TWO THROUGH SEVEN...THURSDAY THROUGH TUESDAY

A STRONG LOW PRESSURE SYSTEM WILL MOVE ACROSS THE STATE THIS
WEEKEND. RAIN IS FORECAST TO OVERSPREAD THE AREA ON FRIDAY WITH
THE THREAT OF SOME NON SEVERE THUNDERSTORMS LATE FRIDAY AFTERNOON
INTO FRIDAY NIGHT. A GRADUAL TRANSITION TO SNOW IS EXPECTED ON
SATURDAY WITH SOME LIGHT ACCUMULATIONS OF SNOW POSSIBLE BY THE
TIME PRECIPITATION ENDS EARLY SUNDAY MORNING. THERE IS STILL
SOME UNCERTAINTY WITH THE EXACT TRACK OF THE STORM...AND FORECAST
SNOWFALL AMOUNTS MAY CHANGE SUBSTANTIALLY IN THE NEXT FEW DAYS.
STAY TUNED FOR POSSIBLE WATCHES AND WARNINGS IN THE NEAR FUTURE.

.SPOTTER INFORMATION STATEMENT...

SPOTTER ACTIVATION WILL NOT BE NEEDED...HOWEVER SNOWFALL REPORTS
FROM THE UPCOMING WINTER STORM WOULD BE APPRECIATED.

IAZ006-007-016-017-025>028-036>039-048>050-061-062-021200-
WINNEBAGO-WORTH-HANCOCK-CERRO GORDO-WRIGHT-FRANKLIN-BUTLER-BREMER-
HAMILTON-HARDIN-GRUNDY-BLACK HAWK-STORY-MARSHALL-TAMA-JASPER-
POWESHIEK-
805 PM CST WED FEB 1 2012

THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF CENTRAL IOWA.

.DAY ONE...TONIGHT

DENSE FOG IS EXPECTED TO CURTAIL VISIBILITIES TONIGHT. A DENSE FOG
ADVISORY IS IN EFFECT FOR THE AREA OVERNIGHT. PLEASE REFER TO THE
NATIONAL WEATHER SERVICE WEBSITE AT WEATHER.GOV\DESMOINES FOR
FURTHER DETAILS.

.DAYS TWO THROUGH SEVEN...THURSDAY THROUGH TUESDAY

DENSE FOG IS EXPECTED TO PERSIST INTO THURSDAY MORNING. A DENSE FOG
ADVISORY IS IN EFFECT FOR THE AREA THROUGH MID MORNING THURSDAY.
PLEASE REFER TO THE NATIONAL WEATHER SERVICE WEBSITE AT
WEATHER.GOV\DESMOINES FOR FURTHER DETAILS.

A STRONG LOW PRESSURE SYSTEM WILL MOVE ACROSS THE STATE THIS
WEEKEND. PRECIPITATION WILL INITIALLY START AS RAIN ON FRIDAY
BEFORE CHANGING OVER TO SNOW ON FRIDAY NIGHT. ACCUMULATING SNOW IS
THEN FORECAST INTO SATURDAY NIGHT. MODERATE TO LOCALLY HEAVY SNOW
ACCUMULATIONS ARE EXPECTED DURING THIS TIME WITH HIGHEST AMOUNTS
EXPECTED NEAR THE HIGHWAY 30 TO HIGHWAY 20 CORRIDOR. THERE IS
STILL SOME UNCERTAINTY WITH THE EXACT TRACK OF THE STORM...AND
FORECAST SNOWFALL AMOUNTS MAY CHANGE SUBSTANTIALLY IN THE NEXT FEW
DAYS. STAY TUNED FOR POSSIBLE WATCHES AND WARNINGS IN THE NEAR
FUTURE.

.SPOTTER INFORMATION STATEMENT...

SPOTTER ACTIVATION WILL NOT BE NEEDED...HOWEVER SNOWFALL REPORTS
FROM THE UPCOMING WINTER STORM WOULD BE APPRECIATED.

CC

The office that day

Everything else NWS Des Moines, IA issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Feb 1, 7:38 PM CSTDense Fog AdvisoryDMXBlack Hawk, Bremer, Butler, Cerro Gordo, Franklin, Grundy and 14 more16 hr
Feb 2, 12:00 PM CSTDense Fog AdvisoryDMXBlack Hawk, Bremer118 min
Feb 2, 3:41 PM CSTDense Fog AdvisoryDMXBlack Hawk, Bremer, Butler, Cerro Gordo, Davis, Franklin and 13 more14 hr

Nearby

Winter Storm Watches in Iowa, 2012Every winter storm watch in 2012

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.