Alert archive / Iowa / Severe Thunderstorm Warnings in 2009

Severe Thunderstorm Warning 4, NWS Des Moines, IA

February 26, 20094 counties in Iowa

NWS Des Moines, IA issued this severe thunderstorm warning at Feb 26, 2009, 12:32 PM CST for 4 counties in Iowa. It was in force for 43 min. 8 reports came from inside the area while it was in force.

The area

The outline as issued, with what was reported inside it.

The facts

Issued: Feb 26, 2009, 12:32 PM CST (18:32 UTC)
Expired: Feb 26, 2009, 1:15 PM CST
In force: 43 min
Issued by: NWS Des Moines, IA
Area: Storm-based polygon

Counties Dallas County, IA, Jasper County, IA, Madison County, IA, Polk County, IA

The radar

The Des Moines radar (KDMX), 19 km from the middle of the area, began a volume at 18:34 UTC, the scan nearest the moment this went out.

Open the radar archive at this moment

The archived warnings, watches and discussions in force at that minute are drawn over the scan, this one among them.

What was reported inside it

Time	Report	Where	Remark
Feb 26, 12:38 PM CST	HAIL 0.75	West Des Moines, IA	NEAR MILLS CIVIC PARKWAY AND I35.
Feb 26, 12:38 PM CST	HAIL 1	West Des Moines, IA
Feb 26, 12:41 PM CST	HAIL 0.88	2 S Johnston, IA	MERLE HAY ROAD AND INTERSTATE 80/35.
Feb 26, 12:48 PM CST	HAIL 0.25	Urbandale, IA	AT 86TH ST AND HICKMAN RD. LASTED FOR 10 MIN.
Feb 26, 12:50 PM CST	HAIL 0.75	1 Ese Clive, IA	PENNY SIZED HAIL FOR ABOUT THREE MINUTES AT THE INTERSECTION OF 92ND STREET AND UNIVERSITY AVE IN WEST DES MOINES.
Feb 26, 12:51 PM CST	HAIL 0.25	Des Moines, IA	AT MERCY HOSPITAL.
Feb 26, 12:51 PM CST	HAIL 0.88	Des Moines, IA	NEAR DRAKE UNIVERSITY.
Feb 26, 12:58 PM CST	HAIL 0.88	2 Ssw West Des Moines, IA	COVERING THE GROUND AND ROAD AT I-35 AND GRAND AVE.

Local storm reports filed while the alert was in force, from inside its polygon or its counties.

Did it verify

Verified. The Iowa Environmental Mesonet's Cow matched one storm report to this severe thunderstorm warning; the first came 6 minutes after it went out.

Cow counts a report within 15 km of the polygon while the warning was in force: a tornado for a tornado warning; hail of 1 inch or more, a gust of 58 mph or more or wind damage for a severe thunderstorm warning; a flash flood report for a flash flood warning.

The nearest sounding before it

Omaha, NE (KOAX), launched 12:00Z, 6.5 hours before the alert went out and 223 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-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

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: 725 m above ground
0-6 km bulk shear: 39 kt
0-1 km storm-relative helicity: 489 m²/s²
0-3 km storm-relative helicity: 601 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.6

Open this sounding in Storm Lab

The text

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

000 
WUUS53 KDMX 261832
SVRDMX
IAC049-099-121-153-261915-
/O.NEW.KDMX.SV.W.0004.090226T1832Z-090226T1915Z/

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE DES MOINES IA
1232 PM CST THU FEB 26 2009

THE NATIONAL WEATHER SERVICE IN DES MOINES HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  SOUTHEASTERN DALLAS COUNTY IN CENTRAL IOWA...
  WEST CENTRAL JASPER COUNTY IN CENTRAL IOWA...
  POLK COUNTY IN CENTRAL IOWA...
  THIS INCLUDES THE CITY OF DES MOINES...
  NORTHEASTERN MADISON COUNTY IN SOUTH CENTRAL IOWA...

* UNTIL 115 PM CST.

* AT 1229 PM CST...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM CAPABLE OF PRODUCING NICKEL SIZE HAIL.  THIS
  STORM WAS LOCATED NEAR WAUKEE...OR 12 MILES WEST OF DES MOINES...
  AND MOVING NORTHEAST AT 45 MPH.

* THE SEVERE THUNDERSTORM WILL BE NEAR...
  WEST DES MOINES AND CLIVE BY 1235 PM CST...
  WINDSOR HEIGHTS...URBANDALE...DES MOINES INT AIRPORT AND GRIMES BY
  1240 PM CST...
  DES MOINES AND JOHNSTON BY 1245 PM CST...
  SAYLORVILLE AND ANKENY BY 1250 PM CST...

THIS INCLUDES INTERSTATE 80 BETWEEN MILE MARKERS 112 AND 149.

THIS INCLUDES INTERSTATE 35 BETWEEN MILE MARKERS 67 AND 98.

THIS INCLUDES INTERSTATE 235 BETWEEN MILE MARKERS 1 AND 14.

LARGE HAIL CAN CAUSE INJURY AND PROPERTY DAMAGE. SEEK SAFETY INDOORS
UNTIL THE STORM PASSES.

REPORT TORNADOES...WIND IN EXCESS OF 50 MPH...HAIL LARGER THAN ONE
HALF INCH...OR STORM DAMAGE BY CALLING LOCAL LAW ENFORCEMENT AND
ASKING THEM TO RELAY THE REPORT TO THE NATIONAL WEATHER SERVICE.

LAT...LON 4143 9386 4157 9400 4186 9350 4173 9324
      4150 9370 4151 9380 4146 9380
TIME...MOT...LOC 1831Z 239DEG 38KT 4155 9382

$$

BOKSA

2 follow-up statements

000 
WWUS53 KDMX 261842
SVSDMX

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE DES MOINES IA
1242 PM CST THU FEB 26 2009

IAC049-099-121-153-261915-
/O.CON.KDMX.SV.W.0004.000000T0000Z-090226T1915Z/
JASPER IA-POLK IA-DALLAS IA-MADISON IA-
1241 PM CST THU FEB 26 2009

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 115 PM CST
FOR NORTHEASTERN MADISON...SOUTHEASTERN DALLAS...POLK AND WEST
CENTRAL JASPER COUNTIES...

AT 1238 PM CST...THE PUBLIC REPORTED HAIL VARYING IN SIZE FROM PENNY 
TO QUARTER SIZED HAIL.  THIS STORM WAS LOCATED NEAR WEST DES 
MOINES...OR 6 MILES WEST OF DES MOINES...MOVING NORTHEAST AT 45 MPH.

THE SEVERE THUNDERSTORM WILL BE NEAR...
  SAYLORVILLE AND ANKENY BY 1250 PM CST...
  ANKENY AIRPORT AND ALTOONA BY 1255 PM CST...
  BONDURANT AND ELKHART BY 100 PM CST...
  VALERIA BY 110 PM CST...

THIS INCLUDES INTERSTATE 80 BETWEEN MILE MARKERS 112 AND 150.

THIS INCLUDES INTERSTATE 35 BETWEEN MILE MARKERS 67 AND 98.

THIS INCLUDES INTERSTATE 235 BETWEEN MILE MARKERS 1 AND 14.

IF YOU ARE IN THE PATH OF THIS STORM...PREPARE IMMEDIATELY FOR LARGE
HAIL AND DEADLY CLOUD TO GROUND LIGHTNING. PEOPLE OUTSIDE SHOULD MOVE
TO A SHELTER...PREFERABLY AWAY FROM WINDOWS.

REPORT TORNADOES...WIND IN EXCESS OF 50 MPH...HAIL LARGER THAN ONE
HALF INCH...OR STORM DAMAGE BY CALLING LOCAL LAW ENFORCEMENT AND
ASKING THEM TO RELAY THE REPORT TO THE NATIONAL WEATHER SERVICE.

LAT...LON 4143 9386 4157 9400 4186 9350 4173 9324
      4150 9370 4151 9380 4146 9380
TIME...MOT...LOC 1841Z 239DEG 38KT 4160 9370

$$

BOKSA

000 
WWUS53 KDMX 261915
SVSDMX

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE DES MOINES IA
115 PM CST THU FEB 26 2009

IAC049-099-121-153-261924-
/O.EXP.KDMX.SV.W.0004.000000T0000Z-090226T1915Z/
JASPER IA-POLK IA-DALLAS IA-MADISON IA-
114 PM CST THU FEB 26 2009

...THE SEVERE THUNDERSTORM WARNING FOR NORTHEASTERN MADISON...
SOUTHEASTERN DALLAS...POLK AND WEST CENTRAL JASPER COUNTIES WILL
EXPIRE AT 115 PM CST...

AT 111 PM CST...WEATHER SERVICE DOPPLER RADAR INDICATED THAT THE
THUNDERSTORMS WHICH PROMPTED THE WARNING HAVE WEAKENED...AND NO
LONGER POSE AN IMMEDIATE THREAT TO LIFE OR PROPERTY. THEREFORE...THE
SEVERE THUNDERSTORM WARNING WILL BE ALLOWED TO EXPIRE.

THE THUNDERSTORMS ARE STILL CAPABLE OF PRODUCING PEA SIZED HAIL AND 
BRIEF HEAVY RAIN.

REPORT TORNADOES...WIND IN EXCESS OF 50 MPH...HAIL LARGER THAN ONE
HALF INCH...OR STORM DAMAGE BY CALLING LOCAL LAW ENFORCEMENT AND
ASKING THEM TO RELAY THE REPORT TO THE NATIONAL WEATHER SERVICE.

LAT...LON 4143 9386 4157 9400 4186 9350 4173 9324
      4150 9370 4151 9380 4146 9380
TIME...MOT...LOC 1914Z 239DEG 38KT 4178 9330

$$

BOKSA

What forecasters said that day

The local office's own words before this severe thunderstorm warning went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.

NWS Des Moines, IA wrote its last area forecast discussion before this severe thunderstorm warning went out at Feb 26, 12:00 PM CST, 32 minutes earlier.

Area forecast discussion, Feb 26, 12:00 PM CST, 32 minutes before

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE DES MOINES IA
1200 PM CST THU FEB 26 2009

...UPDATED AVIATION DISCUSSION 26/18Z.

.SHORT TERM...(TODAY)
VERY COMPLEX FORECAST FOR TODAY WITH FREEZING RAIN ACROSS THE
WEST AND NORTH THIS MORNING EVENTUALLY SWITCHING OVER TO SNOW FAR
NORTH THIS AFTERNOON WITH AN EVENTUAL TRANSITION TO A MIX AND THEN
SNOW LATER TODAY. MODIFICATIONS FROM PREVIOUS PACKAGE INCLUDE
ADDING ANOTHER 3 COUNTIES TO THE ADVISORY FROM STORY EAST TO TAMA
COUNTIES...BUMPING UP SNOWFALL TOTALS ACROSS THE FAR NORTH AND
ALSO ADJUSTING THE AMOUNT OF EXPECTED ICE. AT THIS TIME...STILL
LOOKS LIKE BETWEEN .20 AND .30 OVERALL...BUT COMPLICATING THE
MATTER IS THE FACT THAT CONVECTION HAS ALREADY COMMENCED TO OUR
WEST WITH BUFKIT SOUNDINGS SHOWING INSTABILITY FARTHER NORTH INTO
THE COLDER AIR TODAY. THIS WOULD MEAN POSSIBLE THUNDER SLEET OR
THUNDER FREEZING RAIN OVER SOME AREAS THIS MORNING ESPECIALLY.
SO...WILL NEED TO BE KEEPING A CLOSE WATCH TODAY TO MONITOR IF
ANYTHING CHANGES. HAVE ADVISORY NOW BASICALLY ALONG AND NORTH OF
US 30 WITH WARNING AREAS REMAINING THE SAME. COLDER AIR TO FILTER
IN DURING THE AFTERNOON...BULK OF MOISTURE TRANSPORT SHIFTS TO THE
EAST SO EVEN AS CHANGEOVER OCCURS CENTRAL AND SOUTH...BULK OF
EXPECTED QPF TO ALREADY HAVE MOVED AWAY.

.LONG TERM...(TONIGHT-WED)
A STRONG 700 MB DRY PUNCH WILL MOVE OVER IOWA BY THIS EVENING
HOWEVER THE LOW LEVELS WILL REMAIN SATURATED BELOW THE DRY AIR
WITH SOME LIFT NEAR THE FRONTAL BOUNDARY AS IT MOVES SOUTHEAST.
THE DRY AIR ALOFT WILL RESULT IN NO ICE INTRODUCTION WITH ANY
PRECIPITATION ON THE COLD SIDE OF THE BOUNDARY BEING MAINLY LIGHT
FREEZING RAIN OR FREEZING DRIZZLE. THE PRECIPITATION WILL END FROM
WEST TO EAST BY 06Z.

A RELATIVELY COOL DAY IS ON TAP FOR FRIDAY WITH HIGHS ONLY
REACHING INTO THE MID TEENS OVER THE NORTH AS THE COLD AIR OVER
THE NORTHERN PLAINS DIPS SOUTH IN THE WAKE OF TODAYS SYSTEM.
ANOTHER STRONG SHORT WAVE WILL ARRIVE FRIDAY NIGHT AND WILL BRING
A ROUND OF LIGHT SNOW TO THE REGION. AT THIS TIME...SNOW
ACCUMULATIONS OF 1 TO 3 INCHES LOOK POSSIBLE. HIGHER AMOUNTS WOULD
BE POSSIBLE IF THE SYSTEM SLOWS DOWN AS IT PASSES THROUGH THE
STATE...HOWEVER THE GULF WILL BE CLOSED SO THE SYSTEM WILL ONLY
HAVE PACIFIC MOISTURE THAT HAS TAGGED ALONG FOR THE RIDE TO WORK
WITH AND WILL LIMIT OVERALL TOTALS. THE SNOW WILL BE ENDING
SATURDAY MORNING THEN THE REMAINDER OF THE WEEKEND WILL REMAIN
COOL AND DRY. BEYOND THAT A GRADUAL WARMING TREND IS ANTICIPATED
FOR THE BEGINNING OF NEXT WEEK.

.AVIATION...26/18Z
FORECAST CONCERNS ARE PRECIP TYPE AND IFR/LIFR CONDITIONS THROUGH
TONIGHT...THEN STRONG WINDS LATE TONIGHT THROUGH FRIDAY MORNING.
MCW...FOD...AND ALO SHOULD SEE A CHANGE OVER TO FZRA AND SLEET
DURING THE FIRST 6 HOURS OF TAF PERIOD. SO EXPECTING A WINTRY COMBO
THROUGH 00Z/01Z TONIGHT FOR THE NORTHERN THREE TAF SITES WITH WARM
AIR ALOFT. WINDS LOOKS TO SWITCH TO NORTH NORTHEAST BY 21Z IN DSM
AND ALO. THUNDERSTORMS ARE POSSIBLE AT DSM AND OTM THROUGH 00Z
FRIDAY. RAIN HAS BEEN QUICK BUT HEAVY. STRONG PRESSURE GRADIENT SETS
UP BEHIND LOW AND HAVE REFELCTED STRONG WINDS IN ALL TAFS THROUGH
FRIDAY MORNING. IFR CIGS AND VIS SHOULD PERSIST THIS AFTERNOON AND
EVENING FOR OTM AND DES.

&&

.DMX WATCHES/WARNINGS/ADVISORIES...
WINTER STORM WARNING FROM 6 AM THIS MORNING TO 6 PM CST THIS
AFTERNOON FOR CERRO GORDO-EMMET-HANCOCK-KOSSUTH-PALO ALTO-
WINNEBAGO-WORTH.

WINTER WEATHER ADVISORY FROM 6 AM THIS MORNING TO 6 PM CST THIS
AFTERNOON FOR BLACK HAWK-BOONE-BREMER-BUTLER-CALHOUN-FRANKLIN-
GREENE-GRUNDY-HAMILTON-HARDIN-HUMBOLDT-MARSHALL-POCAHONTAS-STORY-
TAMA-WEBSTER-WRIGHT.

WINTER WEATHER ADVISORY UNTIL 6 PM CST THIS AFTERNOON FOR
CARROLL-CRAWFORD-SAC.

&&

SHORT TERM...REV
AVIATION...KLP
LONG TERM...DONAVON

Hazardous weather outlook, Feb 26, 5:07 AM CST, 7 hours 25 minutes before

HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE DES MOINES IA
507 AM CST THU FEB 26 2009

IAZ004>007-015>017-271115-
EMMET-KOSSUTH-WINNEBAGO-WORTH-PALO ALTO-HANCOCK-CERRO GORDO-
507 AM CST THU FEB 26 2009

THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF NORTH CENTRAL
IOWA.

.DAY ONE...TODAY AND TONIGHT

A WINTRY MIX OF PRECIPITATION IS EXPECTED TODAY. INITIALLY...A BAND
OF FREEZING RAIN IS ANTICIPATED TO DEVELOP THEN GRADUALLY TRANSITION TO
SLEET AND SNOW BY LATE MORNING AND INTO THE AFTERNOON HOURS. ICE
ACCUMULATIONS OVER ONE QUARTER INCH ARE POSSIBLE. IN
ADDITION...SEVERAL INCHES OF SNOW MAY FALL ESPECIALLY ALONG AND
NORTHWEST OF A EMMETSBURG TO MASON CITY LINE BY THIS EVENING.

THE PRECIPITATION MAY SWITCH BACK TO LIGHT FREEZING RAIN OR
FREEZING DRIZZLE THIS EVENING WITH MINOR ADDITIONAL ICE
ACCUMULATIONS POSSIBLE.

.DAYS TWO THROUGH SEVEN...FRIDAY THROUGH WEDNESDAY

NO HAZARDOUS WEATHER IS EXPECTED AT THIS TIME.

.SPOTTER INFORMATION STATEMENT...

SPOTTER ACTIVATION WILL NOT BE NEEDED THOUGH SNOW AND ICE
ACCUMULATION REPORTS ARE APPRECIATED.

IAZ023>028-033>039-044>050-271115-
POCAHONTAS-HUMBOLDT-WRIGHT-FRANKLIN-BUTLER-BREMER-SAC-CALHOUN-
WEBSTER-HAMILTON-HARDIN-GRUNDY-BLACK HAWK-CRAWFORD-CARROLL-GREENE-
BOONE-STORY-MARSHALL-TAMA-
507 AM CST THU FEB 26 2009

THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF CENTRAL IOWA
MAINLY BETWEEN HIGHWAY 3 AND HIGHWAY 30.

.DAY ONE...TODAY AND TONIGHT

FREEZING RAIN IS POSSIBLE ACROSS THE AREA THIS MORNING WITH ICE
ACCUMULATIONS OF ONE TO TWO TENTHS OF AN INCH POSSIBLE. EMBEDDED
THUNDERSTORMS ARE POSSIBLE DURING THIS TIME. TEMPERATURES WILL
RISE ABOVE FREEZING BY THIS AFTERNOON THOUGH SHOWERS AND ISOLATED
THUNDERSTORMS WILL REMAIN POSSIBLE.

ANOTHER ROUND OF LIGHT FREEZING RAIN OR FREEZING DRIZZLE MAY DEVELOP THIS
EVENING WITH MINOR ADDITIONAL ICE ACCUMULATIONS POSSIBLE.

A WINTER WEATHER ADVISORY IS IN EFFECT FOR A PORTION OF THE AREA.
PLEASE REFER TO THE NATIONAL WEATHER SERVICE WEBSITE AT
WEATHER.GOV/DESMOINES.

.DAYS TWO THROUGH SEVEN...FRIDAY THROUGH WEDNESDAY

NO HAZARDOUS WEATHER IS EXPECTED AT THIS TIME.

.SPOTTER INFORMATION STATEMENT...

SPOTTER ACTIVATION WILL NOT BE NEEDED THOUGH ICE ACCUMULATION
REPORTS ARE APPRECIATED.

IAZ057>062-070>075-081>086-092>097-271115-
AUDUBON-GUTHRIE-DALLAS-POLK-JASPER-POWESHIEK-CASS-ADAIR-MADISON-
WARREN-MARION-MAHASKA-ADAMS-UNION-CLARKE-LUCAS-MONROE-WAPELLO-
TAYLOR-RINGGOLD-DECATUR-WAYNE-APPANOOSE-DAVIS-
507 AM CST THU FEB 26 2009

THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF CENTRAL IOWA AND
SOUTH CENTRAL IOWA SOUTH OF HIGHWAY 30.

.DAY ONE...TODAY AND TONIGHT

SCATTERED SHOWERS AND THUNDERSTORMS ARE EXPECTED TODAY. AN ISOLATED
SEVERE STORM WITH NICKEL SIZE HAIL IS POSSIBLE. THE GREATEST
THREAT FOR A SEVERE STORM IS ALONG AND SOUTHEAST OF A BEDFORD TO
MONTEZUMA LINE.

POCKETS OF LIGHT FREEZING RAIN OR FREEZING DRIZZLE MAY OCCUR THIS
EVENING WITH MINOR ICE ACCUMULATIONS POSSIBLE.

.DAYS TWO THROUGH SEVEN...FRIDAY THROUGH WEDNESDAY

NO HAZARDOUS WEATHER IS EXPECTED AT THIS TIME.

.SPOTTER INFORMATION STATEMENT...

SPOTTER ACTIVATION IS NOT ANTICIPATED AT THIS TIME HOWEVER ANY
REPORTS OF SEVERE WEATHER OR ICE ACCUMULATIONS ARE APPRECIATED.

DONAVON

In the hours before

Local storm report, Feb 26, 9:59 AM CST, 2 hours 33 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE DES MOINES IA
959 AM CST THU FEB 26 2009

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0955 AM     HEAVY SLEET      ESTHERVILLE             43.40N 94.83W
02/26/2009  E0.50 INCH       EMMET              IA   EMERGENCY MNGR

            MODERATE SLEET CURRENTLY. SOME SLEET UP TO PEA SIZE. ALL
            HIGHWAYS BECOMING SLUSH COVERED.

&&

RK

Local storm report, Feb 26, 10:09 AM CST, 2 hours 23 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE DES MOINES IA
1009 AM CST THU FEB 26 2009

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

1000 AM     FREEZING RAIN    EMMETSBURG              43.11N 94.68W
02/26/2009  E0.10 INCH       PALO ALTO          IA   LAW ENFORCEMENT

            MODERATE FREEZING RAIN ONGOING. STREETS VERY SLICK.

&&

RK

Local storm report, Feb 26, 10:29 AM CST, 2 hours 3 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE DES MOINES IA
1029 AM CST THU FEB 26 2009

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

1023 AM     FREEZING RAIN    SWEA CITY               43.38N 94.31W
02/26/2009  E0.01 INCH       KOSSUTH            IA   OTHER FEDERAL

            LIGHT GLAZING OF ICE. FREEZING RAIN AND SLEET MIX
            CURRENTLY. ONE HALF INCH SNOW AND SLEET ACCUMULATION
            EARLIER.

&&

RK

Local storm report, Feb 26, 10:52 AM CST, 1 hour 40 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE DES MOINES IA
1052 AM CST THU FEB 26 2009

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

1045 AM     SLEET            MANNING                 41.91N 95.06W
02/26/2009  E0.20 INCH       CARROLL            IA   TRAINED SPOTTER

            HEAVY SLEET/HAIL SHOWERS WITH PIECES UP TO PEA SIZE.
            ROADS COVERED AND SLICK.

&&

RK

Local storm report, Feb 26, 12:02 PM CST, 30 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE DES MOINES IA
1202 PM CST THU FEB 26 2009

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

1130 AM     SLEET            WNW FORT DODGE          42.51N 94.18W
02/26/2009  E0.10 INCH       WEBSTER            IA   TRAINED SPOTTER

            THUNDER SNOW AND THUNDER SLEET ONGOING. MINOR
            ACCUMULATIONS SO FAR.

&&

RK

Local storm report, Feb 26, 12:16 PM CST, 16 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE DES MOINES IA
1216 PM CST THU FEB 26 2009

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

1213 PM     HEAVY SLEET      1 NNW MASON CITY        43.17N 93.20W
02/26/2009  E0.50 INCH       CERRO GORDO        IA   TRAINED SPOTTER

            ROADS COVERED WITH SLEET.

&&

JH

The office that day

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

Issued	Product	Office	Counties	Lasted
Feb 25, 9:25 PM CST	Winter Storm Warning	DMX	Cerro Gordo, Emmet, Hancock, Kossuth, Palo Alto, Winnebago and 1 more	18 hr
Feb 25, 9:25 PM CST	Winter Weather Advisory	DMX	Black Hawk, Boone, Bremer, Butler, Calhoun, Carroll and 14 more	18 hr
Feb 26, 11:22 AM CST	Severe Thunderstorm Warning	DMX	Audubon, Carroll, Greene	23 min
Feb 26, 11:42 AM CST	Severe Thunderstorm Warning	DMX	Adair, Cass	33 min
Feb 26, 1:21 PM CST	Severe Thunderstorm Warning	DMX	Appanoose, Davis, Wapello	39 min
Feb 26, 3:41 PM CST	Areal Flood Advisory	DMX	Wapello	54 min

Nearby

Severe Thunderstorm Warnings in Iowa, 2009 Every severe thunderstorm warning in 2009

Sources

The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.