Alert archive / South Dakota / Flash Flood Warnings in 2011

Flash Flood Warning 3, NWS Rapid City, SD

May 9, 2011Meade County, Perkins County, Ziebach County, South Dakota

NWS Rapid City, SD issued this flash flood warning at May 9, 2011, 8:19 PM MDT for Meade County, Perkins County, Ziebach County, South Dakota. It was in force for 6 hr. 1 report 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: May 9, 2011, 8:19 PM MDT (02:19 UTC)
Expired: May 10, 2011, 2:30 AM MDT
In force: 6 hr
Issued by: NWS Rapid City, SD
Area: Storm-based polygon
Flood severity: None

Counties Meade County, SD, Perkins County, SD, Ziebach County, SD

The radar

The Rapid City radar (KUDX), 102 km from the middle of the area, began a volume at 02:21 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
May 9, 10:28 PM MDT	FLASH FLOOD	8 E Maurine, SD	ONE FOOT OF WATER OVER HIGHWAY 212 AT FOXRIDGE ROAD.

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 flash flood warning; the first came 129 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

Rapid City, SD (KUNR), launched 00:00Z, 2.3 hours before the alert went out and 109 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: 231 J/kg
Mixed-layer CIN: -129 J/kg
Mixed-layer LCL: 581 m above ground
0-6 km bulk shear: 46 kt
0-1 km storm-relative helicity: 114 m²/s²
0-3 km storm-relative helicity: 247 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.

184 
WGUS53 KUNR 100219
FFWUNR
SDC093-105-137-100830-
/O.NEW.KUNR.FF.W.0003.110510T0219Z-110510T0830Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE RAPID CITY SD
819 PM MDT MON MAY 9 2011

THE NATIONAL WEATHER SERVICE IN RAPID CITY HAS ISSUED A

* FLASH FLOOD WARNING FOR...
  EASTERN MEADE COUNTY IN WEST CENTRAL SOUTH DAKOTA...
  SOUTHERN PERKINS COUNTY IN NORTHWESTERN SOUTH DAKOTA...
  ZIEBACH COUNTY IN WEST CENTRAL SOUTH DAKOTA...

* UNTIL 230 AM MDT TUESDAY

* AT 819 PM MDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED
  SLOW MOVING THUNDERSTORMS WITH VERY HEAVY RAINFALL ACROSS THE 
  WARNED AREA.

* RUNOFF FROM THIS EXCESSIVE RAINFALL WILL CAUSE FLASH FLOODING TO
  OCCUR. SOME LOCATIONS THAT WILL EXPERIENCE FLOODING INCLUDE...
  DUPREE...FAITH...BRIDGER...ENNING...FAIRPOINT...HOWES...IRON
  LIGHTNING...MARCUS...MAURINE...MUD BUTTE...OPAL...PLAINVIEW...RED
  ELM...RED OWL...RED SCAFFOLD...STONEVILLE...THUNDER BUTTE...UNION
  CENTER...USTA...WHITE OWL AND ZEONA.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

BE ESPECIALLY CAUTIOUS AT NIGHT WHEN IT IS HARDER TO RECOGNIZE THE
DANGERS OF FLOODING. IF FLASH FLOODING IS OBSERVED ACT QUICKLY. DO
NOT ENTER THE WATER. TURN AROUND AND MOVE UP TO HIGHER GROUND TO
ESCAPE FLOOD WATERS. DO NOT STAY IN AREAS SUBJECT TO FLOODING WHEN
WATER BEGINS RISING.

&&

LAT...LON 4523 10150 4516 10148 4501 10149 4500 10143
      4469 10135 4458 10153 4459 10167 4456 10176
      4453 10198 4445 10214 4446 10229 4431 10285
      4458 10296 4526 10297

$$

SMITH

4 follow-up statements

908 
WGUS73 KUNR 100339
FFSUNR

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE RAPID CITY SD
939 PM MDT MON MAY 9 2011

SDC093-105-137-100830-
/O.CON.KUNR.FF.W.0003.000000T0000Z-110510T0830Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
PERKINS SD-ZIEBACH SD-MEADE SD-
939 PM MDT MON MAY 9 2011

...FLASH FLOOD WARNING REMAINS IN EFFECT FOR EASTERN MEADE...ZIEBACH
AND SOUTHERN PERKINS COUNTIES UNTIL 230 AM MDT...

AT 936 PM MDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED 
THUNDERSTORMS WITH VERY HEAVY RAINFALL ACROSS THE WARNED AREA. 
RAINFALL AMOUNTS OF THREE TO FIVE INCHES WERE COMMON. 

RUNOFF FROM THIS EXCESSIVE RAINFALL WILL CAUSE FLASH FLOODING TO
OCCUR. SOME LOCATIONS THAT WILL EXPERIENCE FLASH FLOODING 
INCLUDE...AREAS ALONG SULPHUR CREEK...DEEP CREEK...AND TRIBUTARIES 
INTO THE BELLE FOURCHE AND CHEYENNE RIVERS. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

BE ESPECIALLY CAUTIOUS AT NIGHT WHEN IT IS HARDER TO RECOGNIZE THE
DANGERS OF FLOODING. IF FLOODING IS OBSERVED...ACT QUICKLY. DO NOT
ENTER THE WATER. TURN AROUND AND MOVE UP TO HIGHER GROUND. DO NOT
STAY IN AREAS SUBJECT TO FLOODING WHEN WATER BEGINS RISING.

&&

LAT...LON 4523 10150 4516 10148 4501 10149 4500 10143
      4469 10135 4458 10153 4459 10167 4456 10176
      4453 10198 4445 10214 4446 10229 4431 10285
      4458 10296 4526 10297

$$

SMITH

569 
WGUS73 KUNR 100438
FFSUNR

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE RAPID CITY SD
1038 PM MDT MON MAY 9 2011

SDC093-105-137-100830-
/O.CON.KUNR.FF.W.0003.000000T0000Z-110510T0830Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
PERKINS SD-ZIEBACH SD-MEADE SD-
1038 PM MDT MON MAY 9 2011

...FLASH FLOOD WARNING REMAINS IN EFFECT FOR EASTERN MEADE...ZIEBACH
AND SOUTHERN PERKINS COUNTIES UNTIL 230 AM MDT...

AT 1033 PM MDT...EMERGENCY MANAGEMENT REPORTED A FOOT OF WATER AND 
HAIL OVER HIGHWAY 212 NEAR THE FOX RIDGE CUTOFF ROAD THAT IS 8 MILES 
EAST OF MAURINE. VERY HEAVY RAINFALL HAS FALLEN OVER NORTHERN MEADE 
COUNTY AND SOUTHERN PERKINS COUNTY THIS EVENING. RUNOFF FROM THIS 
EXCESSIVE RAINFALL WILL CONTINUE TO CAUSE FLASH FLOODING. 

SOME LOCATIONS THAT WILL EXPERIENCE FLASH FLOODING INCLUDE...AREAS 
ALONG HIGHWAY 212 EAST OF MAURINE...OPAL...SULPHUR CREEK...DEEP 
CREEK AND TRIBUTARIES TO THE MOREAU...BELLE FOURCHE AND CHEYENNE 
RIVERS. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

BE ESPECIALLY CAUTIOUS AT NIGHT WHEN IT IS HARDER TO RECOGNIZE THE
DANGERS OF FLOODING. IF FLOODING IS OBSERVED...ACT QUICKLY. DO NOT
ENTER THE WATER. TURN AROUND AND MOVE UP TO HIGHER GROUND. DO NOT
STAY IN AREAS SUBJECT TO FLOODING WHEN WATER BEGINS RISING.

&&

LAT...LON 4523 10150 4516 10148 4501 10149 4500 10143
      4469 10135 4458 10153 4459 10167 4456 10176
      4453 10198 4445 10214 4446 10229 4431 10285
      4458 10296 4526 10297

$$

SMITH

731 
WGUS73 KUNR 100606
FFSUNR

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE RAPID CITY SD
1206 AM MDT TUE MAY 10 2011

SDC093-105-137-100830-
/O.CON.KUNR.FF.W.0003.000000T0000Z-110510T0830Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
PERKINS SD-ZIEBACH SD-MEADE SD-
1206 AM MDT TUE MAY 10 2011

...FLASH FLOOD WARNING REMAINS IN EFFECT FOR EASTERN MEADE...ZIEBACH
AND SOUTHERN PERKINS COUNTIES UNTIL 230 AM MDT...

AT 1202 AM MDT...EMERGENCY MANAGEMENT HAS REPORTED A FOOT OF WATER 
AND HAIL OVER HIGHWAY 212 NEAR THE FOX RIDGE CUTOFF ROAD THAT IS 8 
MILES EAST OF MAURINE. VERY HEAVY RAINFALL HAS FALLEN OVER NORTHERN 
MEADE COUNTY AND SOUTHERN PERKINS COUNTY THIS EVENING. ADDITIONAL 
RAINFALL OF UP TO 2 INCHES IS EXPECTED. RUNOFF FROM THIS EXCESSIVE 
RAINFALL WILL CONTINUE TO CAUSE FLASH FLOODING. 

SOME LOCATIONS THAT WILL EXPERIENCE FLASH FLOODING INCLUDE...AREAS 
ALONG HIGHWAY 212 EAST OF MAURINE...OPAL...SULPHUR CREEK...DEEP 
CREEK AND TRIBUTARIES TO THE MOREAU...BELLE FOURCHE AND CHEYENNE 
RIVERS. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

BE ESPECIALLY CAUTIOUS AT NIGHT WHEN IT IS HARDER TO RECOGNIZE THE
DANGERS OF FLOODING. IF FLOODING IS OBSERVED...ACT QUICKLY. DO NOT
ENTER THE WATER. TURN AROUND AND MOVE UP TO HIGHER GROUND. DO NOT
STAY IN AREAS SUBJECT TO FLOODING WHEN WATER BEGINS RISING.

&&

LAT...LON 4523 10150 4516 10148 4501 10149 4500 10143
      4469 10135 4458 10153 4459 10167 4456 10176
      4453 10198 4445 10214 4446 10229 4431 10285
      4458 10296 4526 10297

$$

SCHILD

488 
WGUS73 KUNR 100824
FFSUNR

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE RAPID CITY SD
224 AM MDT TUE MAY 10 2011

SDC093-105-137-100838-
/O.EXP.KUNR.FF.W.0003.000000T0000Z-110510T0830Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
PERKINS SD-ZIEBACH SD-MEADE SD-
224 AM MDT TUE MAY 10 2011

...THE FLASH FLOOD WARNING THAT WAS IN EFFECT FOR EASTERN MEADE...
ZIEBACH AND SOUTHERN PERKINS COUNTIES WILL BE ALLOWED TO EXPIRE AT
230 AM MDT...

THE FLASH FLOOD WARNING HAS BEEN REPLACED BY A FLOOD WARNING. RUNOFF 
FROM THE HEAVY RAIN WILL LEAD TO FLOODING ON STREAMS AND CREEKS THAT 
FLOW INTO THE BELLE FOURCHE RIVER...THE MOREAU RIVER...AND THE 
CHEYENNE RIVER OVER THE NEXT 24 HOURS.

LAT...LON 4523 10150 4516 10148 4501 10149 4500 10143
      4469 10135 4458 10153 4459 10167 4456 10176
      4453 10198 4445 10214 4446 10229 4431 10285
      4458 10296 4526 10297

$$

SCHILD

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 Rapid City, SD wrote its last area forecast discussion before this flash flood warning went out at May 9, 1:05 PM MDT, 7 hours 14 minutes earlier.

Area forecast discussion, May 9, 1:05 PM MDT, 7 hours 14 minutes before

AREA FORECAST DISCUSSION FOR WESTERN SD AND NORTHEASTERN WY
NATIONAL WEATHER SERVICE RAPID CITY SD
105 PM MDT MON MAY 9 2011

.DISCUSSION...WATER VAPOR SHOWS DEEP UPPER TROF OVER THE GREAT
BASIN WITH INCREASING S/SW FLOW INTO THE NRN PLAINS. JET MAX IS
ROUNDING THE TROF AND NOSING INTO CO AND FAR SRN WY. AT THE
SURFACE...LOW CENTER IS OVER WRN NEB WITH INVERTED TROF EXTENDING
NWD TO BETWEEN KRAP AND KPHP. N/NE BOUNDARY FLOW HELPING LOW STRATUS
TO HANG TOUGH ACROSS MUCH OF THE CWFA...WITH THE EXCEPTION OF THE
MOSTLY CLEAR SKIES FROM OVER THE BLKHLS THROUGH SERN WY.

LATER THIS AFTERNOON AND TONIGHT...JET STREAK WILL NOSE INTO OUR
CWFA CREATING WIDESPREAD SYNOPTIC LIFT. SURFACE BASED CAPE WILL BE
HARD TO COME BY IN AREAS THAT ARE COVERED IN LOW STRATUS...BUT WITH
MUCAPE IN THE 1000J/KG (FAR WRN SD) TO 3000 J/KG (SCNTRL SD)
RANGE...ELEVATED STORMS WILL BE LIKELY. SHEAR IS NOT OVERLY
IMPRESSIVE...BUT SHOULD INCREASE AS JET STREAK PASSES OVERHEAD.
AREAS THAT HAVE NOT SEEN THE STRATUS ARE MORE LIKELY TO SEE SFC
BASED CONVECTION. MAIN THREAT IS LIKELY TO BE LARGE HAIL...BUT
SHOULD ANY STORMS BECOME SURFACE BASED NEAR THE INVERTED TROF OVER
SWRN/SCNTRL SD THERE IS SUFFICIENT LO LEVEL SHEAR FOR A TORNADIC
THREAT. SEVERE THREAT SHOULD WAIN AFTER MIDNIGHT AS BEST
CONVECTIVE PARAMETERS SHIFT TO OUR EAST.

TUESDAY...UPPER LOW WILL CUT OFF OVER SERN MT AND MOVE NEWD ACROSS
WRN ND...WITH DRY SLOT OVER CNTRL SD LIMITING PCPN POTENTIAL IN OUR
ERN ZONES. WELL DEFINED TROWAL WILL WRAP AROUND UPPER LOW WITH
HEAVIEST RAINS LIKELY WEST AND NORTHWEST OF THE BLKHLS. THUS...WILL
KEEP FLOOD WATCH IN PLACE. WINDY CONDITIONS LIKELY TO DEVELOP ACROSS
MUCH OF THE AREA WITH STRONG 850-700MB GRADIENT IN PLACE. PCPN WILL
DECREASE LATE TUESDAY NIGHT AS UPPER LOW SHIFTS IN SCNTRL CANADA.

WEDNESDAY...SOUTHERN STREAM UPPER LOW WILL MOVE THROUGH THE CNTRL
PLAINS...WITH JUST ENOUGH ENERGY FOR A FEW -SHRA ACRS OUR
CWFA...ESPECIALLY SCNTRL SD. TEMPS WILL REMAIN ON THE COOL SIDE WITH
BREEZY NW WINDS.

EXTENDED...LARGE UPPER TROF SHIFTS EAST ON THURSDAY WITH SOME
LINGERING SHOWERS POSSIBLE FROM THE BLACK HILLS EAST. BLOCKING
PATTERN SETS UP FOR THE REMAINDER OF THE WEEK INTO EARLY NEXT
WEEK...BRINGING DRY CONDITIONS AND NEAR AVERAGE TEMPERATURES.

&&

.AVIATION...LOW STRATUS WILL PERSIST OVER MOST OF NORTHEASTERN WY
AND FAR WESTERN SD THROUGH THE AFTERNOON AND OVERNIGHT...BRINGING
AREAS OF IFR/MVFR CIGS. SHOWERS AND THUNDERSTORMS WILL DEVELOP
ACROSS THE AREA LATE THIS AFTERNOON INTO TONIGHT...WITH LCL IFR VIS
IN HEAVIER PRECIP. SOME STORMS MAY BECOME SEVERE THIS AFT AND EVE.

&&

.UNR WATCHES/WARNINGS/ADVISORIES...
SD...FLOOD WATCH THROUGH WEDNESDAY AFTERNOON FOR BUTTE-HARDING-
     NORTHERN BLACK HILLS-NORTHERN FOOT HILLS-PERKINS.

WY...FLOOD WATCH THROUGH WEDNESDAY AFTERNOON FOR NORTHEASTERN CROOK-
     WESTERN CROOK-WYOMING BLACK HILLS.

&&

JOHNSON/RUDGE

Hazardous weather outlook, May 9, 4:20 AM MDT, 15 hours 59 minutes before

HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE RAPID CITY SD
420 AM MDT MON MAY 9 2011

SDZ001-002-012>014-024>032-041>044-046-047-049-072>074-WYZ054>058-
071-101300-
BENNETT-BUTTE-CENTRAL BLACK HILLS-CUSTER CO PLAINS-FALL RIVER-HAAKON-
HARDING-HERMOSA FOOT HILLS-JACKSON-MELLETTE-NORTHEASTERN CROOK-
NORTHERN BLACK HILLS-NORTHERN CAMPBELL-NORTHERN FOOT HILLS-
NORTHERN MEADE CO PLAINS-PENNINGTON CO PLAINS-PERKINS-RAPID CITY-
SHANNON-SOUTHERN BLACK HILLS-SOUTHERN CAMPBELL-SOUTHERN FOOT HILLS-
SOUTHERN MEADE CO PLAINS-STURGIS/PIEDMONT FOOT HILLS-TODD-TRIPP-
WESTERN CROOK-WESTON-WYOMING BLACK HILLS-ZIEBACH-
420 AM MDT (520 AM CDT) MON MAY 9 2011

THIS HAZARDOUS WEATHER OUTLOOK IS FOR WESTERN SOUTH DAKOTA AND
NORTHEASTERN WYOMING.

.DAY ONE...TODAY AND TONIGHT

A STRONG UPPER LEVEL STORM SYSTEM WILL AFFECT THE AREA THIS
AFTERNOON INTO TONIGHT...RESULTING IN NUMEROUS SHOWERS AND
THUNDERSTORMS. THERE IS A SLIGHT RISK OF SEVERE THUNDERSTORMS OVER
WESTERN SOUTH DAKOTA AND PORTIONS OF NORTHEAST WYOMING THIS AFTERNOON
AND EVENING...WITH LARGE HAIL. LOCALLY HEAVY RAIN IS ALSO POSSIBLE
ACROSS PORTIONS OF NORTHEAST WYOMING AND NORTHWEST SOUTH DAKOTA.

.DAYS TWO THROUGH SEVEN...TUESDAY THROUGH SUNDAY

THE STRONG UPPER LEVEL STORM SYSTEM WILL MOVE INTO FAR WESTERN NORTH
DAKOTA ON TUESDAY. THIS WILL BRING LOCALLY HEAVY RAIN TO PORTIONS OF
NORTHEAST WYOMING AND FAR NORTHWEST SOUTH DAKOTA. A FEW
THUNDERSTORMS ARE POSSIBLE ACROSS PORTIONS OF WESTERN SOUTH
DAKOTA...SEVERE THUNDERSTORMS ARE NOT EXPECTED AT THIS TIME.

.SPOTTER INFORMATION STATEMENT...

SPOTTER ACTIVATION MAY BE NEEDED TODAY ACROSS WESTERN SOUTH DAKOTA.

In the hours before

Local storm report, May 9, 5:45 PM MDT, 2 hours 34 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE RAPID CITY SD
545 PM MDT MON MAY 09 2011

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

0544 PM     HAIL             DOWNTOWN NEWCASTLE      43.85N 104.20W
05/09/2011  E0.88 INCH       WESTON             WY   LAW ENFORCEMENT

&&

LCZEPYHA

Local storm report, May 9, 5:57 PM MDT, 2 hours 22 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE RAPID CITY SD
557 PM MDT MON MAY 09 2011

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

0532 PM     HAIL             FOUR CORNERS            44.08N 104.13W
05/09/2011  E0.88 INCH       WESTON             WY   PUBLIC

&&

CALDERON

Local storm report, May 9, 5:58 PM MDT, 2 hours 21 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE RAPID CITY SD
558 PM MDT MON MAY 09 2011

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

0545 PM     HAIL             DOWNTOWN NEWCASTLE      43.85N 104.20W
05/09/2011  E1.50 INCH       WESTON             WY   PUBLIC

&&

CALDERON

Local storm report, May 9, 6:23 PM MDT, 1 hour 56 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE RAPID CITY SD
623 PM MDT MON MAY 09 2011

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

0615 PM     FLASH FLOOD      DOWNTOWN NEWCASTLE      43.85N 104.20W
05/09/2011                   WESTON             WY   LAW ENFORCEMENT

            WATER WAS REPORTED FLOWING OVER THE HIGHWAY 16 BYPASS AND
            AT THE INTERSECTION OF SPOKANE AVE AND SPRINGFIELD AVE.

&&

CALDERON

Local storm report, May 9, 6:40 PM MDT, 1 hour 39 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE RAPID CITY SD
640 PM MDT MON MAY 09 2011

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

0615 PM     FLASH FLOOD      DOWNTOWN NEWCASTLE      43.85N 104.20W
05/09/2011                   WESTON             WY   LAW ENFORCEMENT

            SEVERAL STREETS IN NEWCASTLE ARE FLOODING.

&&

CALDERON

The office that day

Everything else NWS Rapid City, SD issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
May 9, 6:49 PM MDT	Flash Flood Warning	UNR	Custer, Fall River	4 hr
May 9, 6:58 PM MDT	Severe Thunderstorm Warning	UNR	Fall River	62 min
May 9, 7:21 PM MDT	Severe Thunderstorm Warning	UNR	Meade	54 min
May 9, 7:34 PM MDT	Severe Thunderstorm Warning	UNR	Meade, Perkins	56 min
May 9, 7:51 PM MDT	Severe Thunderstorm Warning	UNR	Haakon, Pennington	42 min
May 9, 7:56 PM MDT	Severe Thunderstorm Warning	UNR	Meade	64 min
May 9, 8:04 PM MDT	Tornado Warning	UNR	Fall River	56 min
May 9, 8:10 PM MDT	Tornado Warning	UNR	Haakon	65 min
May 9, 8:13 PM MDT	Severe Thunderstorm Warning	UNR	Haakon, Meade, Pennington, Ziebach	62 min
May 9, 8:24 PM MDT	Severe Thunderstorm Warning	UNR	Meade, Perkins	66 min
May 9, 8:35 PM MDT	Severe Thunderstorm Warning	UNR	Meade	46 min
May 9, 8:57 PM MDT	Severe Thunderstorm Warning	UNR	Custer, Pennington	78 min
May 9, 9:01 PM MDT	Tornado Warning	UNR		59 min
May 9, 9:06 PM MDT	Tornado Warning	UNR	Haakon	54 min
May 9, 9:13 PM MDT	Severe Thunderstorm Warning	UNR	Meade, Ziebach	62 min
May 9, 9:36 PM MDT	Severe Thunderstorm Warning	UNR	Bennett, Jackson	69 min
May 9, 9:44 PM MDT	Severe Thunderstorm Warning	UNR	Perkins	61 min
May 9, 9:48 PM MDT	Tornado Warning	UNR	Bennett	42 min
May 9, 10:00 PM MDT	Tornado Warning	UNR	Haakon	30 min
May 9, 10:10 PM MDT	Severe Thunderstorm Warning	UNR	Ziebach	65 min
May 9, 10:19 PM MDT	Areal Flood Warning	UNR	Custer, Fall River	16 hr
May 9, 10:35 PM MDT	Severe Thunderstorm Warning	UNR	Jackson	55 min
May 9, 10:41 PM MDT	Severe Thunderstorm Warning	UNR	Butte, Harding	38 min
May 9, 11:03 PM MDT	Severe Thunderstorm Warning	UNR	Haakon	42 min
May 9, 11:09 PM MDT	Severe Thunderstorm Warning	UNR	Meade, Pennington	51 min
May 9, 11:16 PM MDT	Tornado Warning	UNR	Haakon, Pennington	24 min
May 9, 11:45 PM MDT	Severe Thunderstorm Warning	UNR	Haakon, Meade, Perkins, Ziebach	60 min
May 9, 11:48 PM MDT	Flash Flood Warning	UNR	Perkins, Ziebach	3 hr
May 10, 2:22 AM MDT	Areal Flood Warning	UNR	Meade, Perkins, Ziebach	12 hr

Nearby

Flash Flood Warnings in South Dakota, 2011 Every flash flood warning in 2011

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.