Alert archive / Oregon / Flash Flood Warnings in 2014

Flash Flood Warning 1, NWS Pendleton, OR

June 2, 2014Grant County, Morrow County, Umatilla County, Oregon

NWS Pendleton, OR issued this flash flood warning at Jun 2, 2014, 6:00 PM PDT for Grant County, Morrow County, Umatilla County, Oregon. It was in force for 2 hr. No storm report in the archive falls inside the area while it was in force.

The area

The outline as issued.

The facts

Issued: Jun 2, 2014, 6:00 PM PDT (01:00 UTC)
Expired: Jun 2, 2014, 8:00 PM PDT
In force: 2 hr
Issued by: NWS Pendleton, OR
Area: Storm-based polygon
Flood severity: None

Counties Grant County, OR, Morrow County, OR, Umatilla County, OR

The radar

The Pendleton radar (KPDT), 67 km from the middle of the area, began a volume at 01:02 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.

Did it verify

Not verified. The Iowa Environmental Mesonet's Cow found no qualifying storm report inside this flash flood warning while it was in force. That is not proof nothing happened: reports are thin where few people live.

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

Boise Airport, ID (KBOI), launched 00:00Z, 1.0 hours before the alert went out and 292 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: 4171 m above ground
0-6 km bulk shear: 19 kt
0-1 km storm-relative helicity: -6 m²/s²
0-3 km storm-relative helicity: 12 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.

153 
WGUS56 KPDT 030100
FFWPDT
ORC023-049-059-030300-
/O.NEW.KPDT.FF.W.0001.140603T0100Z-140603T0300Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE PENDLETON OR
600 PM PDT MON JUN 2 2014

THE NATIONAL WEATHER SERVICE IN PENDLETON HAS ISSUED A

* FLASH FLOOD WARNING FOR...
  EXTREME NORTH CENTRAL GRANT COUNTY IN EAST CENTRAL OREGON...
  SOUTHEASTERN MORROW COUNTY IN NORTHEAST OREGON...
  SOUTHWESTERN UMATILLA COUNTY IN NORTHEAST OREGON...

* UNTIL 800 PM PDT

* AT 557 PM PDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED
  FLASH FLOODING FROM A THUNDERSTORM OVER THE WARNED AREA.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

EXCESSIVE RUNOFF FROM HEAVY RAINFALL WILL CAUSE FLOODING OF SMALL
CREEKS AND STREAMS...HIGHWAYS AND UNDERPASSES. ADDITIONALLY...COUNTRY
ROADS AND FARMLANDS ALONG THE BANKS OF CREEKS...STREAMS AND OTHER LOW
LYING AREAS ARE SUBJECT TO FLOODING.

MOST FLOOD DEATHS OCCUR IN AUTOMOBILES. NEVER DRIVE YOUR VEHICLE INTO
AREAS WHERE THE WATER COVERS THE ROADWAY. FLOOD WATERS ARE USUALLY
DEEPER THAN THEY APPEAR. JUST ONE FOOT OF FLOWING WATER IS POWERFUL
ENOUGH TO SWEEP VEHICLES OFF THE ROAD. WHEN ENCOUNTERING FLOODED
ROADS MAKE THE SMART CHOICE...TURN AROUND...DONT DROWN.

&&

LAT...LON 4520 11926 4522 11915 4530 11901 4497 11902
      4489 11923

$$

BIEDA

3 follow-up statements

825 
WGUS76 KPDT 030201
FFSPDT

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE PENDLETON OR
701 PM PDT MON JUN 2 2014

ORC023-030210-
/O.CAN.KPDT.FF.W.0001.000000T0000Z-140603T0300Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
GRANT OR-
701 PM PDT MON JUN 2 2014

...THE FLASH FLOOD WARNING HAS BEEN CANCELLED FOR EXTREME NORTH
CENTRAL GRANT COUNTY IN EAST CENTRAL OREGON...

LAT...LON 4509 11902 4504 11924 4520 11926 4522 11915
      4530 11901

$$

ORC049-059-030300-
/O.CON.KPDT.FF.W.0001.000000T0000Z-140603T0300Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
MORROW OR-UMATILLA OR-
701 PM PDT MON JUN 2 2014

...A FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 800 PM PDT FOR
SOUTHWESTERN UMATILLA AND SOUTHEASTERN MORROW COUNTIES...

AT 651 PM PDT...NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUED TO
INDICATE A THUNDERSTORM PRODUCING FLASH FLOODING OVER THE WARNED
AREA.

THIS THUNDERSTORM WITH EXCESSIVE RAIN WILL OTHERWISE REMAIN OVER
MAINLY RURAL AREAS OF THE INDICATED COUNTIES.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

MOST FLOOD DEATHS OCCUR IN AUTOMOBILES. NEVER DRIVE YOUR VEHICLE INTO
AREAS WHERE THE WATER COVERS THE ROADWAY. FLOOD WATERS ARE USUALLY
DEEPER THAN THEY APPEAR. JUST ONE FOOT OF FLOWING WATER IS POWERFUL
ENOUGH TO SWEEP VEHICLES OFF THE ROAD. WHEN ENCOUNTERING FLOODED
ROADS MAKE THE SMART CHOICE...TURN AROUND...DONT DROWN.

&&

LAT...LON 4509 11902 4504 11924 4520 11926 4522 11915
      4530 11901

$$

BIEDA

032 
WGUS76 KPDT 030233
FFSPDT

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE PENDLETON OR
733 PM PDT MON JUN 2 2014

ORC049-030243-
/O.CAN.KPDT.FF.W.0001.000000T0000Z-140603T0300Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
MORROW OR-
733 PM PDT MON JUN 2 2014

...THE FLASH FLOOD WARNING HAS BEEN CANCELLED FOR SOUTHEASTERN MORROW
COUNTY...

LAT...LON 4518 11902 4517 11910 4522 11915 4530 11901

$$

ORC059-030300-
/O.CON.KPDT.FF.W.0001.000000T0000Z-140603T0300Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
UMATILLA OR-
733 PM PDT MON JUN 2 2014

...A FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 800 PM PDT FOR
SOUTHWESTERN UMATILLA COUNTY...

AT 723 PM PDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A  
THUNDERSTORM PRODUCING HEAVY RAINFALL OVER THE WARNED AREA.

THIS THUNDERSTORM WITH EXCESSIVE RAIN WILL OTHERWISE REMAIN OVER
MAINLY RURAL AREAS OF THE INDICATED COUNTY.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

EXCESSIVE RUNOFF FROM HEAVY RAINFALL WILL CAUSE FLOODING OF SMALL
CREEKS AND STREAMS...COUNTRY ROADS...AS WELL AS FARMLAND ALONG THE
BANKS OF CREEKS AND STREAMS.

&&

LAT...LON 4518 11902 4517 11910 4522 11915 4530 11901

$$

BIEDA

210 
WGUS76 KPDT 030251
FFSPDT

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE PENDLETON OR
751 PM PDT MON JUN 2 2014

ORC059-030301-
/O.EXP.KPDT.FF.W.0001.000000T0000Z-140603T0300Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
UMATILLA OR-
751 PM PDT MON JUN 2 2014

...THE FLASH FLOOD WARNING WILL EXPIRE AT 800 PM PDT FOR SOUTHWESTERN
UMATILLA COUNTY...

THUNDERSTORMS HAVE MOVED OUT OF SOUTHWESTERN UMATILLA COUNTY AND NO 
ADDITIONAL RAINFALL IS EXPECTED.  

LAT...LON 4518 11902 4517 11910 4522 11915 4530 11901

$$

BIEDA

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 Pendleton, OR wrote its last area forecast discussion before this flash flood warning went out at Jun 2, 2:20 PM PDT, 3 hours 40 minutes earlier.

Area forecast discussion, Jun 2, 2:20 PM PDT, 3 hours 40 minutes before

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE PENDLETON OR
220 PM PDT MON JUN 2 2014

.SHORT TERM...TONIGHT THROUGH THURSDAY. TWO UPPER LEVEL SYSTEMS WILL
BRING SHOWERS AND THUNDERSTORMS TO THE AREA TODAY. A LARGE
CIRCULATION CENTER OFF THE CALIFORNIA COAST HAS TURNED THE UPPER
FLOW SOUTHERLY INCREASING THE INSTABILITY OVER OREGON. THE SECOND
CIRCULATION IS MOVING SOUTH FROM BRITISH COLUMBIA INTO WASHINGTON
WITH A GOOD BIT OF LIGHTNING SO FAR. BASED ON SATELLITE AND
OBSERVATIONS IT APPEARS THERE IS A REASONABLE AMOUNT OF INSTABILITY
OVER THE REGION...ESPECIALLY OVER THE MOUNTAINS. EXPECT SHOWERS AND
THUNDERSTORMS TO INCREASE IN COVERAGE THIS AFTERNOON INTO THE
EVENING. CURRENT TRENDS COMBINED WITH MODELS SUGGEST HIGHEST
PROBABILITIES WILL BE OVER CENTRAL AND NORTHEAST OREGON ALONG WITH
THE WASHINGTON CASCADES. THIS ACTIVITY WILL DIMINISH OVERNIGHT AND
MOVE OFF TO THE EAST. NORTHWEST FLOW FOR TUESDAY. STILL SOME WEAK
LINGERING INSTABILITY OVER THE BLUES AND WALLOWA COUNTY FOR ISOLATED
SHOWERS OR STORMS. REMAINDER OF THE FORECAST AREA WILL BE PARTLY
CLOUDY WITH BREEZY WEST WINDS. TEMPS WILL BE SEVERAL DEGREES COOLER.
FOR WEDNESDAY AND THURSDAY A DRY NORTHWEST FLOW WILL PREVAIL. SKIES
WILL BE MAINLY CLEAR WITH SEASONAL TEMPERATURES. 94

.LONG TERM...THURSDAY NIGHT THROUGH MONDAY...OVERALL FAIRLY DRY WEST
TO NORTHWEST FLOW WILL PERSIST THROUGH THE EXTENDED.  SHORTWAVE
TROUGH WILL PUSH THROUGH THE AREA THURSDAY NIGHT...BUT NOT EXPECTING
ANYTHING AS FAR AS SHOWERS OR THUNDERSTORMS TO BE ASSOCIATED.  WINDS
MAY PICK UP OUT OF THE NORTH AND BE A BIT BREEZY. WEST FLOW WILL
CONTINUE ON FRIDAY WITH THE MAIN BAND OF MOISTURE MOVING ACROSS
NORTHERN WASHINGTON...THEREFORE HAVE KEPT POPS DRY FOR THIS PERIOD.
THIS PATTERN WILL CONTINUE THROUGH THE EXTENDED WITH WEAK
DISTURBANCES PASSING THROUGH...BUT NO SIGNIFICANT IMPACTS ARE
EXPECTED.  THERE IS THE POSSIBILITY THAT PRECIPITATION COULD RETURN
TO THE FORECAST ON SUNDAY EVENING.   HOWEVER...RUN TO RUN MODEL
CONTINUITY AND OVERALL AGREEMENT IS NOT THE BEST.  THEREFORE
CONFIDENCE IS NOT HIGH ENOUGH TO KEEP MENTION OF THUNDER INTO THE
EXTENDED FORECAST. WEBER

&&

.AVIATION...00Z TAFS...VFR CONDITIONS EXPECTED OVER THE NEXT 24
HOURS. SHOWERS AND THUNDERSTORMS CONTINUE TO BUILD OVER THE
NORTHEAST MOUNTAINS LATE THIS AFTERNOON AND INTO THE EVENING.
THUNDERSTORM DEVELOPMENT IN THE VICINITY OF SOME SITES IS
POSSIBLE...BUT FOR NOW WILL AMEND SITES AS NEEDED FOR VCTS OR
POSSIBLE -TSRA SINCE IT LOOKS MARGINAL.  EXPECT CONDITIONS TO CLEAR
OUT AFTER 09Z.  WINDS WILL BE 5-10KTS WITH SOME AREAS GUSTING TO
20KTS.  AFTER 18Z TUESDAY EXPECT WINDS TO PICK UP 10-20KTS GUSTING
15-25KTS.  WEBER

&&

.PRELIMINARY POINT TEMPS/POPS...
PDT  55  82  49  82 /  20  10  10   0
ALW  59  83  54  83 /  20  10  10   0
PSC  54  86  52  86 /  10  10  10   0
YKM  53  81  47  82 /  10   0   0   0
HRI  55  84  47  85 /  10  10   0   0
ELN  53  79  49  81 /  10   0   0   0
RDM  43  78  35  80 /  20  10   0   0
LGD  51  76  41  76 /  30  20  10   0
GCD  48  77  40  76 /  30  10  10   0
DLS  56  78  50  80 /  10   0   0   0

&&

.PDT WATCHES/WARNINGS/ADVISORIES...
OR...NONE.
WA...NONE.
&&

FOR ADDITIONAL WEATHER INFORMATION, CHECK OUR WEB SITE AT...
WWW.WEATHER.GOV/PENDLETON

94/89/89

In the hours before

Local storm report, Jun 2, 5:18 PM PDT, 42 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE PENDLETON OR
518 PM PDT MON JUN 02 2014

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

0515 PM     HAIL             1 E DALE                44.99N 118.93W
06/02/2014  E1.00 INCH       GRANT              OR   TRAINED SPOTTER

&&

JAS

Special weather statement, Jun 2, 5:21 PM PDT, 39 minutes before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE PENDLETON OR
521 PM PDT MON JUN 2 2014

ORZ503-507-030115-
FOOTHILLS OF THE NORTHERN BLUE MOUNTAINS OF OREGON OR-SOUTHERN BLUE
MOUNTAINS OF OREGON OR-
521 PM PDT MON JUN 2 2014

...SIGNIFICANT WEATHER ADVISORY FOR SOUTHWESTERN UMATILLA AND EASTERN
MORROW COUNTIES UNTIL 615 PM PDT...

AT 518 PM PDT...NATIONAL WEATHER SERVICE DOPPLER RADAR WAS TRACKING A
STRONG THUNDERSTORM 13 MILES NORTHWEST OF DALE...OR 41 MILES SOUTH OF
PENDLETON...MOVING NORTH AT 10 MPH.

HAIL UP TO THE SIZE OF PENNIES IS EXPECTED WITH THIS STORM...ALONG
WITH HEAVY RAIN.

IF THREATENING WEATHER APPROACHES YOUR AREA...TAKE SHELTER IN A
STURDY BUILDING.

LAT...LON 4507 11929 4547 11920 4539 11883 4502 11905
TIME...MOT...LOC 0021Z 196DEG 10KT 4514 11914

BIEDA

Local storm report, Jun 2, 5:32 PM PDT, 28 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE PENDLETON OR
532 PM PDT MON JUN 02 2014

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

0529 PM     HAIL             5 E DALE                44.99N 118.84W
06/02/2014  E1.50 INCH       GRANT              OR   PUBLIC

&&

JAS

The office that day

Everything else NWS Pendleton, OR issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Jun 2, 5:21 PM PDT	Special Weather Statement	PDT	Umatilla	54 min
Jun 2, 5:25 PM PDT	Severe Thunderstorm Warning	PDT	Grant, Umatilla, Union	65 min
Jun 2, 6:19 PM PDT	Special Weather Statement	PDT	Umatilla	56 min
Jun 2, 6:32 PM PDT	Flash Flood Warning	PDT	Umatilla	118 min
Jun 2, 6:46 PM PDT	Special Weather Statement	PDT	Umatilla	29 min
Jun 2, 6:47 PM PDT	Special Weather Statement	PDT	Union	28 min
Jun 3, 3:10 AM PDT	Wind Advisory	PDT	Gilliam, Sherman, Wasco	17 hr

Nearby

Flash Flood Warnings in Oregon, 2014 Every flash flood warning in 2014

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.