Alert archive / Iowa / Flash Flood Warnings in 2010

Flash Flood Warning 46, NWS Des Moines, IA

July 7, 2010Boone County, Hamilton County, Iowa

NWS Des Moines, IA issued this flash flood warning at Jul 7, 2010, 9:48 AM CDT for Boone County, Hamilton County, Iowa. It was in force for 6 hr. 3 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: Jul 7, 2010, 9:48 AM CDT (14:48 UTC)
Expired: Jul 7, 2010, 3:30 PM CDT
In force: 6 hr
Issued by: NWS Des Moines, IA
Area: Storm-based polygon
Flood severity: None

Counties Boone County, IA, Hamilton County, IA

The radar

The Des Moines radar (KDMX), 52 km from the middle of the area, began a volume at 14:49 UTC, the scan nearest the moment this went out.

Open the radar archive at this moment

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

What was reported inside it

Time	Report	Where	Remark
Jul 7, 10:16 AM CDT	FLASH FLOOD	5 Nnw Boone Airport, IA	WATER OVER COUNTY HIGHWAY P AVE/R27 NORTH OF BOONE. SEVERAL GRAVEL ROADS THROUGHOUT NORTHEAST PORTION OF BOONE COUNTY ARE COVERED WITH WATER.
Jul 7, 11:05 AM CDT	FLASH FLOOD	7 N Boone Airport, IA	MONTGOMERY CREEK FAR OUT OF BANKS APPROACHING ROAD BRIDGE. 2.79 INCHES OF RAIN IN LESS THAN TWO HOURS.
Jul 7, 11:45 AM CDT	FLASH FLOOD	8 N Boone Airport, IA	INTERSECTION OF COUNTY HIGHWAYS R27 AND E18 CLOSED DUE TO FLOODING. OVER ONE FOOT OF WATER FLOWING OVER A GRAVEL ROAD IN THE SAME AREA. 4 TO 5 INCHES OF RAIN MEASURED IN SEVERAL GAGES OVER A SMALL AREA.

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 3 storm reports to this flash flood warning; the first came 28 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, 2.8 hours before the alert went out and 233 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: 2303 J/kg
Mixed-layer CIN: -4 J/kg
Mixed-layer LCL: 481 m above ground
0-6 km bulk shear: 23 kt
0-1 km storm-relative helicity: -13 m²/s²
0-3 km storm-relative helicity: 47 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.

877 
WGUS53 KDMX 071448
FFWDMX
IAC015-079-072030-
/O.NEW.KDMX.FF.W.0046.100707T1448Z-100707T2030Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE DES MOINES IA
948 AM CDT WED JUL 7 2010

THE NATIONAL WEATHER SERVICE IN DES MOINES HAS ISSUED A

* FLASH FLOOD WARNING FOR...
  NORTHERN BOONE COUNTY IN CENTRAL IOWA...
  SOUTHWESTERN HAMILTON COUNTY IN CENTRAL IOWA...

* UNTIL 330 PM CDT

* AT 942 AM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED
  SLOW MOVING THUNDERSTORMS WITH VERY HEAVY RAINFALL ACROSS THE      
  WARNED AREA. OVER 3 INCHES OF RAIN COULD FALL NORTH OF             
  BOONE...TOWARD STRATFORD AND STANHOPE BEFORE 11 AM.

* RUNOFF FROM THIS EXCESSIVE RAINFALL WILL CAUSE FLASH FLOODING TO
  OCCUR. FLASH FLOODING IS EXPECTED TO OCCUR OVER MAINLY RURAL       
  AREAS OF NORTH AND NORTHEAST BOONE AND SOUTHWESTERN HAMILTON       
  COUNTIES...INCLUDING THE TOWN OF FRASER.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

EXCESSIVE RUNOFF FROM HEAVY RAINFALL WILL CAUSE FLOODING OF SMALL 
CREEKS AND STREAMS...COUNTRY ROADS...AND DITCHES NEAR FARMLAND ARE 
LIKELY TO OVERFLOW. 

MOST FLOOD RELATED DEATHS OCCUR IN VEHICLES. DO NOT ATTEMPT TO CROSS 
WATER COVERED ROADS. NEVER TRY TO CROSS A FLOWING STREAM... EVEN A 
SMALL ONE...ON FOOT OR IN A VEHICLE.

&&

LAT...LON 4228 9373 4215 9372 4209 9381 4208 9400
      4228 9391

$$

JUNGBLUTH

3 follow-up statements

943 
WGUS73 KDMX 071532
FFSDMX

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE DES MOINES IA
1032 AM CDT WED JUL 7 2010

IAC015-079-072030-
/O.CON.KDMX.FF.W.0046.000000T0000Z-100707T2030Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
HAMILTON IA-BOONE IA-
1032 AM CDT WED JUL 7 2010

...FLASH FLOOD WARNING REMAINS IN EFFECT FOR NORTHEASTERN BOONE AND
SOUTHWESTERN HAMILTON COUNTIES UNTIL 330 PM CDT...

AT 1025 AM CDT...EMERGENCY MANAGEMENT REPORTED THAT FLASH FLOODING 
WAS OCCURRING IN NORTHERN AND NORTHEASTERN BOONE COUNTY. COUNTY 
PAVEMENT R27 WAS REPORTED TO BE UNDER WATER 3.5 MILES NORTH OF 
BOONE. IN ADDITION...THE COUNTY ENGINEER REPORTED THAT MANY GRAVEL 
ROADS WERE UNDER WATER. 

DOPPLER RADAR INDICATES THAT MORE THAT 3 INCHES OF RAIN FELL IN LESS 
THAN TWO HOURS. RUNOFF FROM THIS EXCESSIVE RAINFALL WILL CAUSE 
INUNDATION OF FLAT AREAS...OVERFLOWING OF DITCHES AND FLASH FLOODING 
ON SMALL STREAMS. THIS WILL MAINLY OCCUR NORTH AND NORTHEAST OF 
BOONE...AND IN SOUTHWESTERN HAMILTON COUNTIES...BETWEEN 
BOONE...FRASER...STRATFORD AND STANHOPE. 

RAINFALL HAS BEGUN TO DIMINISH OVER THE WARNED AREA...BUT FLASH 
FLOODING WILL CONTINUE FOR SOME TIME.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

MOST FLOOD RELATED DEATHS OCCUR IN VEHICLES. DO NOT ATTEMPT TO CROSS
BRIDGES...DIPS...OR OTHER LOW SPOTS IF WATER COVERS THE ROADWAY.
NEVER TRY TO CROSS A FLOWING STREAM...EVEN A SMALL ONE...ON FOOT OR
IN A VEHICLE.

&&

LAT...LON 4228 9373 4215 9372 4209 9381 4208 9400
      4228 9391

$$

271 
WGUS73 KDMX 071656
FFSDMX

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE DES MOINES IA
1156 AM CDT WED JUL 7 2010

IAC015-079-072030-
/O.CON.KDMX.FF.W.0046.000000T0000Z-100707T2030Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
HAMILTON IA-BOONE IA-
1156 AM CDT WED JUL 7 2010

...FLASH FLOOD WARNING REMAINS IN EFFECT FOR NORTHEASTERN BOONE AND
SOUTHWESTERN HAMILTON COUNTIES UNTIL 330 PM CDT...

AT 1145 AM CDT...BOONE COUNTY EMERGENCY MANAGEMENT REPORTED THAT 
FLASH FLOODING WAS OCCURRING TO THE NORTH OF BOONE. COUNTY PAVEMENT 
R27 WAS CLOSED IN TWO LOCATIONS...INCLUDING THE INTERSECTION WITH 
HIGHWAY E18. A GRAVEL ROAD IN THE SAME AREA HAD MORE THAN ONE FOOT 
OF WATER FLOWING OVER IT.

BETWEEN 4 AND 5 INCHES OF RAIN WAS MEASURED OVER A SMALL AREA IN 
NORTHERN BOONE COUNTY. FLASH FLOODING MAY ALSO EXTEND INTO HAMILTON 
COUNTY NEAR STRATFORD. ALTHOUGH RAIN HAS ENDED FOR THE MORNING...IT 
WILL TAKE SOME TIME FOR FLOODING TO RECEDE. MANY AREAS ARE 
INUNDATED AND IMPROVEMENT WILL BE SLOW. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

MOST FLOOD RELATED DEATHS OCCUR IN VEHICLES. DO NOT ATTEMPT TO CROSS 
BRIDGES...DIPS...OR OTHER LOW SPOTS IF WATER COVERS THE ROADWAY. 
NEVER TRY TO CROSS A FLOWING STREAM...EVEN A SMALL ONE...ON FOOT OR 
IN A VEHICLE.

&&

LAT...LON 4228 9373 4215 9372 4209 9381 4208 9400
      4228 9391

$$

JUNGBLUTH

243 
WGUS73 KDMX 071847
FFSDMX

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE DES MOINES IA
147 PM CDT WED JUL 7 2010

IAC015-079-072030-
/O.CON.KDMX.FF.W.0046.000000T0000Z-100707T2030Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
HAMILTON IA-BOONE IA-
147 PM CDT WED JUL 7 2010

...FLASH FLOOD WARNING REMAINS IN EFFECT FOR NORTHEASTERN BOONE AND
SOUTHWESTERN HAMILTON COUNTIES UNTIL 330 PM CDT...

AT 140 PM CDT...EMERGENCY MANAGEMENT REPORTED THAT FLASH FLOODING 
WAS STILL OCCURRING...WITH WATER OVER COUNTY HIGHWAYS R27 AND E18 
NORTH OF BOONE. IN ADDITION...SEVERAL GRAVEL ROADS IN THE AREA ARE 
CLOSED DUE TO WASHOUTS FROM EARLIER FLASH FLOODING. 

FLOODING IS EXPECTED BETWEEN STRATFORD AND BOONE...AND OVER RURAL 
AREAS OF NORTHEASTERN BOONE COUNTY. RAINFALL OF 4 TO 5 INCHES WAS 
REPORTED IN NORTHERN BOONE COUNTY.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

MOST FLOOD RELATED DEATHS OCCUR IN VEHICLES. DO NOT ATTEMPT TO CROSS 
IF WATER COVERS THE ROADWAY. NEVER TRY TO CROSS A FLOWING STREAM... 
EVEN A SMALL ONE...ON FOOT OR IN A VEHICLE.

&&

LAT...LON 4228 9373 4215 9372 4209 9381 4208 9400
      4228 9391

$$

JUNGBLUTH

What forecasters said that day

The local office's own words before this flash flood 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 flash flood warning went out at Jul 7, 3:06 AM CDT, 6 hours 42 minutes earlier.

Area forecast discussion, Jul 7, 3:06 AM CDT, 6 hours 42 minutes before

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE DES MOINES IA
306 AM CDT WED JUL 7 2010

.SHORT TERM /TODAY/...
FEATURES REMAIN RELATIVELY WEAK ACROSS THE STATE CURRENTLY WITH
LIGHT FLOW AS BOUNDARY APPROACHES FROM THE WEST.  WILL SEE SOME
INCREASE IN THE FLOW DURING THE MORNING AS 850MB WINDS STRENGTHEN IN
RESPONSE TO APPROACHING SHORTWAVE. NAM12 AND THE 4KM WRF BEGIN TO
BREAK OUT SHRA/TSRA BY MID MORNING ALONG 850MB CONVERGENCE IN
NORTHEAST TO NORTH CENTRAL/CENTRAL IA.  THE CONVECTION BECOMES MORE
WIDESPREAD BY AFTERNOON BUT MODELS HAVE A HARD TIME FOCUSING PCPN
INTO AN ORGANIZED SYSTEM...LIKELY DUE TO THE FACT OF LIMITED SHEAR
AND RELATIVELY WEAK SYNOPTIC FORCING.  STILL PWATS OF 1.5 TO 2
INCHES AND DEEP WARM CLOUD LAYER WILL PROVIDE CONDITIONS FAVORABLE
FOR HEAVY RAINS WITH ANY GIVEN STORM.  WITHOUT A WAY TO PINPOINT A
FAVORED AREA AND AFTER COORDINATION WITH SURROUNDING OFFICES...HAVE
HELD BACK ON ANY WATCH...HOWEVER WILL MENTION HEAVY RAINFALL IN THE
FORECAST.  TEMPERATURES SHOULD WARM INTO THE UPPER 70S TO LOWER 80S
BUT WILL HAVE A HARD TIME GETTING MUCH WARMER AS CLOUDS INCREASE AND
RAIN SHOWERS BECOME MORE NUMEROUS BY THIS AFTERNOON.

.LONG TERM /TONIGHT THROUGH TUESDAY/...
FRONTAL BOUNDARY CONTINUES TO WEAKEN AS IT CROSSES IOWA TONIGHT.
UPPER LEVEL FEATURES FAVORING THE FRONT TO CONTINUE TO STRETCH AND
LOSE INTEGRITY AND LESSEN CONVERGENCE ALONG THE BOUNDARY IN THE NEXT
24 HOURS. TROUGH AT H700 AND H500 WILL SWING EAST OF THE REGION BY
EARLY THU MORNING...AND TAKE ANY CHANCES FOR ADDITIONAL CONVECTION
ALONG WITH IT.  TONIGHT...HOWEVER...WE STILL HAVE JUICED AIRMASS TO
CONTEND WITH AND PWATS STILL IN THE 1.5 TO 2.25 INCH RANGE TOWARD
06-12Z THURSDAY. WITH WEAK UPPER LEVEL FLOW AND PLENTY OF
MOISTURE...STILL EXPECTING A FEW STORMS WILL PRODUCE LOCALLY HEAVY
RAINFALL AS THEY DEVELOP IN THE MORE UNSTABLE AIR OVER OUR EASTERN
HALF OF THE FORECAST AREA THIS EVENING. BY 06Z...MOST OF THE DAYTIME
GENERATED CAPE WILL HAVE DIMINISHED...LEAVING JUST ACTIVITY OVER THE
EAST THE REMAINDER OF THE NIGHT. RAINFALL AMTS AGAIN LIKELY TO REACH
THE 1 TO 2 INCH RANGE THOUGH PINPOINTING AN AREA TO BE HARDEST HIT
WILL BE LESS EASY. FOR NOW...EAST OF I35 LOOKS TO BE THE FAVORED
AREA FOR STORMS WITH LOCALLY HEAVY RAINFALL POTENTIAL.  HEADLINES
WILL NOT BE CARRIED FOR NOW...FOR THE EVENING PERIOD. LOWS TONIGHT
STILL QUITE WARM WITH AIRMASS REMAINING THE SAME. BY LATE THURSDAY
SOME PUSH OF DRIER AIR TO ADVANCE SOUTHEAST AND DEW POINTS AND TEMPS
WILL BE SLIGHTLY COOLER. H850 TEMPS SUGGEST THAT FRI AM LOWS WILL BE
IN THE 50S TO LOWER 60S WITH THE POTENTIAL FOR SOME GROUND OR
WIDESPREAD FOG. BY LATE FRIDAY...WARM AIR ADVECTION ALREADY
STREAMING INTO THE WEST/NORTHWEST. EXPECT LOWS TO WARM SOME FOR
FRIDAY NIGHT WITH HIGHS ON SATURDAY WELL INTO THE 80S ONCE AGAIN.
THE NEXT UPSTREAM WAVE APPROACHES BY SUNDAY WITH INCREASED CHANCES
FOR CONVECTION THROUGH THE DAY. THOUGH GFS/EURO/GEM SUGGEST ANOTHER
ROUND OF LOCALLY HEAVY RAINFALL SUNDAY THROUGH MONDAY...ITS TOO
EARLY TO CONTEMPLATE THE DETAILS AND COVERAGE. FOR NOW...HAVE RAISED
POP ON SUNDAY AND SUNDAY NIGHT TO CHANCE CATEGORY WITH SOME
ANTICIPATION THAT HIGHER POP WILL BE NEEDED FOR THAT PERIOD.  TEMPS
ON THE WEEKEND LOOK RATHER WARM...ESPECIALLY SAT AND SUNDAY WITH
POTENTIAL FOR SOME 90 DEGREE HEAT OVER THE WEST AND SOUTH. AT LEAST
THROUGH THE EXTENDED...NO MAJOR CHANGES TO OVERALL UPPER LEVEL
PATTERN. MODIFIED WEST NORTHWEST FLOW WILL CONTINUE TO GENERATE LEE
SIDE LOW PRESSURE AND REPEATED CHANCES FOR RAIN AND HUMIDITY WILL
CONTINUE EVERY 2 TO 3 DAYS AS LONG AS GENEROUS MOISTURE POOL REMAINS
JUST TO THE SOUTH OF THE STATE.

&&

.AVIATION...
07/06Z... STILL LITTLE CHANGE IN THE GOING FORECAST. STAGNANT
LOW-LEVEL FLOW HAS TRAPPED A LOT OF MOISTURE. ASIDE FROM AN ISOL
SHRA...SHOULD BE QUIET OVERNIGHT...EXCEPT FOR DOWN TOWARD KOTM WHERE
CONVECTION DEVELOPING OVER CENT MO MAY COME NORTH AND BE IN ITS
VICINITY TOWARD 10Z. MAY HAVE SOME IFR CONDITIONS WITH FOG...BUT
SEEMS LIKE HIGHER CLOUDS SHOULD PREVENT FOG FROM BEING TOO
THICK...SO REMOVED THE IFR FOG MENTION. RETURN FLOW AND APPROACH OF
FRONT FROM THE NW ARE LIKELY TO DEVELOP A FAIRLY WIDESPREAD AREA OF
LOW MVFR CONDITIONS IN RA/SHRA AND ISOLD TSRA ACROSS THE REGION
DURING THE DAY WEDNESDAY. NOT ABLE TO BE VERY SPECIFIC AT THIS
POINT...SO JUST KEPT THE VCSH AND CB MENTION GOING THROUGH 06Z AND
WILL WAIT FOR LATER UPDATES TO REFINE ANY TS MENTION

&&

.DMX WATCHES/WARNINGS/ADVISORIES...NONE

&&

SHORT TERM...COGIL
LONG TERM...REV
AVIATION...MOYER

Hazardous weather outlook, Jul 7, 4:11 AM CDT, 5 hours 37 minutes before

HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE DES MOINES IA
411 AM CDT WED JUL 7 2010

IAZ004>007-015>017-023>028-033>039-044>050-057>062-070>075-081>086-
092>097-080915-
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-
411 AM CDT WED JUL 7 2010

THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF CENTRAL IOWA.

.DAY ONE...TODAY AND TONIGHT

SHOWERS AND SCATTERED NON SEVERE THUNDERSTORMS ARE LIKELY. LOCALLY
HEAVY RAINFALL OF ONE TO THREE INCHES IS POSSIBLE FROM THE STRONGEST
STORMS. ANY SLOW MOVING THUNDERSTORMS MAY PRODUCE LOCALIZED STREET
FLOODING AND POSSIBLE PONDING OF WATER IN FIELDS. FLASH FLOODING
IS NOT EXPECTED TO BE WIDESPREAD BUT MAY OCCUR IF AN AREA OF SLOW
MOVING THUNDERSTORMS REPEATEDLY AFFECTS ONE AREA FOR AN HOUR OR
LONGER.

RIVER FLOOD WARNINGS REMAIN IN EFFECT FOR THE AREA. PLEASE REFER
TO THE NATIONAL WEATHER SERVICE WEBSITE AT WEATHER.GOV/DESMOINES
FOR FURTHER DETAILS.

.DAYS TWO THROUGH SEVEN...THURSDAY THROUGH TUESDAY

SOME LINGERING ISOLATED THUNDERSTORMS ARE POSSIBLE THROUGH
THURSDAY MORNING OVER THE CENTRAL TO SOUTHEAST PORTION OF THE
FORECAST AREA. ADDITIONAL THUNDERSTORMS WILL OCCUR SUNDAY THROUGH
MONDAY. THE PROBABILITY OF SEVERE WEATHER IS LOW AT THIS TIME.

.SPOTTER INFORMATION STATEMENT...

SPOTTER ACTIVATION WILL NOT BE NEEDED BUT ANY SIGNIFICANT RAINFALL
REPORTS WOULD BE APPRECIATED.

REV

In the hours before

Local storm report, Jul 7, 8:38 AM CDT, 1 hour 10 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE DES MOINES IA
838 AM CDT WED JUL 07 2010

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

0837 AM     HEAVY RAIN       EVANSDALE               42.46N 92.28W
07/07/2010  E5.50 INCH       BLACK HAWK         IA   BROADCAST MEDIA

            TWO REPORTS OF 5 TO 6 INCHES WITHIN THE PAST 3 HOURS IN
            THE TOWN OF EVANSDALE. FROM KWWL.

&&

PODRAZIK

Local storm report, Jul 7, 8:46 AM CDT, 1 hour 2 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE DES MOINES IA
846 AM CDT WED JUL 07 2010

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

0838 AM     HEAVY RAIN       DUNKERTON               42.57N 92.16W
07/07/2010  M2.68 INCH       BLACK HAWK         IA   TRAINED SPOTTER

            RAINFALL TOTAL SINCE 0600 AM.

&&

RHATTEBE

Local storm report, Jul 7, 8:50 AM CDT, 58 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE DES MOINES IA
850 AM CDT WED JUL 07 2010

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

0831 AM     FLASH FLOOD      1 E WATERLOO            42.50N 92.32W
07/07/2010                   BLACK HAWK         IA   LAW ENFORCEMENT

            LAW ENFORCEMENT REPORTED ROAD INPASSABLE AT THE
            INTERSECTION OF FRANKLIN AND ELM STREET DUE TO WATER OF
            UNKNOWN DEPTH.

&&

RHATTEBE

Local storm report, Jul 7, 8:53 AM CDT, 55 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE DES MOINES IA
853 AM CDT WED JUL 07 2010

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

0845 AM     FLASH FLOOD      4 NE EVANSDALE          42.50N 92.22W
07/07/2010                   BLACK HAWK         IA   DEPT OF HIGHWAYS

            IOWA 281 ABOUT 2.5 MILES EAST OF WATERLOO AT THE
            INTERSECTION OF BLACK HAWK COUNTY HIGHWAY V49 IS CLOSED
            DUE TO FLOODING. FROM IDOT.

&&

PODRAZIK

Local storm report, Jul 7, 8:59 AM CDT, 49 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE DES MOINES IA
859 AM CDT WED JUL 07 2010

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

0830 AM     HEAVY RAIN       2 SSW MANNING           41.88N 95.07W
07/07/2010  M3.00 INCH       CARROLL            IA   TRAINED SPOTTER

            MEASURED RAINFALL TOTAL IN THE LAST 1.5 HOURS.

&&

RHATTEBE

Local storm report, Jul 7, 9:09 AM CDT, 39 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE DES MOINES IA
909 AM CDT WED JUL 07 2010

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

0903 AM     HEAVY RAIN       ESE GRAY                41.84N 94.98W
07/07/2010  M3.00 INCH       AUDUBON            IA   TRAINED SPOTTER

            MEASURED RAINFALL TOTAL SINCE 0600 AM.

&&

RHATTEBE

The office that day

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

Issued	Product	Office	Counties	Lasted
Jul 6, 8:01 PM CDT	Areal Flood Advisory	DMX	Marion	3 hr
Jul 7, 6:35 AM CDT	Flash Flood Warning	DMX	Black Hawk	6 hr
Jul 7, 7:06 AM CDT	Flash Flood Warning	DMX	Jasper, Marshall, Polk, Poweshiek, Tama	6 hr
Jul 7, 8:53 AM CDT	Flash Flood Warning	DMX	Dallas, Guthrie	3 hr
Jul 7, 11:11 AM CDT	Flash Flood Watch	DMX	Adair, Adams, Appanoose, Audubon, Black Hawk, Boone and 37 more	15 hr
Jul 7, 12:56 PM CDT	Areal Flood Warning	DMX	Black Hawk	9 hr
Jul 7, 3:54 PM CDT	Flash Flood Warning	DMX	Davis	4 hr
Jul 7, 5:49 PM CDT	Areal Flood Advisory	DMX	Black Hawk	3 hr
Jul 7, 6:48 PM CDT	Areal Flood Advisory	DMX	Black Hawk, Bremer, Butler, Grundy, Tama	3 hr

Nearby

Flash Flood Warnings in Iowa, 2010 Every flash flood warning in 2010

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.