Alert archive / Utah / Red Flag Warnings in 2016

Red Flag Warning 2, NWS Salt Lake City, UT

June 28, 201618 counties in Utah

NWS Salt Lake City, UT issued this red flag warning at Jun 28, 2016, 2:17 PM MDT for 18 counties in Utah. It took effect at Jun 29, 2016, 10:00 AM MDT. It was in force for 12 hr. 2 reports came from inside the area while it was in force.

The area

The counties it named, with what was reported inside it.

The facts

Issued
Jun 28, 2016, 2:17 PM MDT (20:17 UTC)
In effect from
Jun 29, 2016, 10:00 AM MDT
Expired
Jun 29, 2016, 10:00 PM MDT
In force
12 hr
Issued by
NWS Salt Lake City, UT

Counties Beaver County, UT, Box Elder County, UT, Carbon County, UT, Davis County, UT, Duchesne County, UT, Emery County, UT, Garfield County, UT, Iron County, UT, Juab County, UT, Kane County, UT, Millard County, UT, Salt Lake County, UT, San Juan County, UT, Sanpete County, UT, Tooele County, UT, Utah County, UT, Washington County, UT, Wayne County, UT

The radar

The Cedar City radar (KICX), 195 km from the middle of the area, began a volume at 20:17 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

TimeReportWhereRemark
Jun 29, 6:10 PM MDTTSTM WND GST 614 E Cottonwood Heights, UTMESOWEST SITE UTSTR S-TURNS BIG COTTONWOOD CANYON
Jun 29, 6:30 PM MDTNON-TSTM WND GST 605 W Magna, UTMESOWEST SITE UT201 SR-201 AT I-80

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

The nearest sounding before it

Salt Lake City I, UT (KSLC), launched 12:00Z, 8.3 hours before the alert went out and 177 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, Salt Lake City I, UT at 12:00Z on 2016-06-28Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 12 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Salt Lake City I, UT at 12:00Z on 2016-06-28The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -4 square meters per square second.193958Sfc1 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
12 J/kg
Mixed-layer CIN
-529 J/kg
Mixed-layer LCL
3933 m above ground
0-6 km bulk shear
17 kt
0-1 km storm-relative helicity
-4 m²/s²
0-3 km storm-relative helicity
53 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

As transmitted.

135 
WWUS85 KSLC 282017
RFWSLC

URGENT - FIRE WEATHER MESSAGE
NATIONAL WEATHER SERVICE SALT LAKE CITY UT
217 PM MDT TUE JUN 28 2016

UTZ489-492-494-495-498-291200-
/O.NEW.KSLC.FW.W.0002.160629T1600Z-160630T0400Z/
/O.CON.KSLC.FW.W.0001.000000T0000Z-160629T0400Z/
SAN RAFAEL SWELL-CENTRAL UTAH WEST DESERT-HENRY MOUNTAINS-
COLOR COUNTRY WEST DESERT-GRAND STAIRCASE-
217 PM MDT TUE JUN 28 2016

...RED FLAG WARNING REMAINS IN EFFECT UNTIL 10 PM MDT THIS
EVENING FOR LIGHTNING AFTER AN EXTREMELY PERIOD FOR FIRE WEATHER
ZONES 489...492...494...495 AND 498... 
...RED FLAG WARNING IN EFFECT FROM 10 AM TO 10 PM MDT WEDNESDAY
FOR LIGHTNING AFTER AN EXTREMELY PERIOD FOR FIRE WEATHER ZONES
489...492...494...495 AND 498...

* AFFECTED AREA...FIRE WEATHER ZONE 489 SAN RAFAEL SWELL...FIRE 
  WEATHER ZONE 492 CENTRAL UTAH WEST DESERT...FIRE WEATHER ZONE 
  494 HENRY MOUNTAINS...FIRE WEATHER ZONE 495 COLOR COUNTRY WEST 
  DESERT AND FIRE WEATHER ZONE 498 GRAND STAIRCASE.

* THUNDERSTORMS...WIDELY SCATTERED SHOWERS AND THUNDERSTORMS WILL
  CONTINUE TO DEVELOP OVER CENTRAL AND SOUTHERN UTAH THIS
  AFTERNOON AND WILL LIKELY HAVE LITTLE RAIN ASSOCIATED WITH THEM.
  THE STORMS ARE EXPECTED TO DECREASE IN COVERAGE THIS EVENING...
  BUT COULD PERSIST INTO THE OVERNIGHT HOURS. SCATTERED
  THUNDERSTORMS WILL ONCE AGAIN DEVELOP LATE WEDNESDAY MORNING AND
  PERSIST THROUGH WEDNESDAY EVENING.

* WINDS...ANY SHOWERS AND THUNDERSTORMS THAT DEVELOP WILL BE 
  CAPABLE OF PRODUCING GUSTY AND ERRATIC OUTFLOW WINDS.

* IMPACTS...LIGHTNING IS EXPECTED WITH ANY THUNDERSTORMS THIS
  AFTERNOON AND EVENING...AND AGAIN ON WEDNESDAY. DUE TO AN
  EXTENDED PERIOD OF DRY CONDITIONS...ANY FIRES THAT START FROM
  THE LIGHTNING CAN SPREAD QUICKLY. ADDITIONALLY...ANY GUSTY
  OUTFLOW WINDS IN THE VICINITY OF THESE FIRE STARTS MAY RESULT IN
  EXTREME FIRE BEHAVIOR.


PRECAUTIONARY/PREPAREDNESS ACTIONS...

A RED FLAG WARNING MEANS THAT CRITICAL FIRE WEATHER CONDITIONS
ARE EITHER OCCURRING NOW...OR WILL SHORTLY. LIGHTNING AFTER AN
EXTREMELY DRY PERIOD CAN RESULT IN FIRE STARTS THAT SPREAD
QUICKLY. ADDITIONALLY...ANY GUSTY OUTFLOW WINDS IN THE VICINITY
OF THESE FIRE STARTS CAN CONTRIBUTE TO EXTREME FIRE BEHAVIOR.

&&

$$

UTZ478-291200-
/O.NEW.KSLC.FW.W.0002.160629T1600Z-160630T0400Z/
SALT LAKE DESERT-
217 PM MDT TUE JUN 28 2016

...RED FLAG WARNING IN EFFECT FROM 10 AM TO 10 PM MDT WEDNESDAY
FOR LIGHTNING AFTER AN EXTREMELY PERIOD FOR FIRE WEATHER ZONE
478...

* AFFECTED AREA...FIRE WEATHER ZONE 478 SALT LAKE DESERT.

* THUNDERSTORMS...ISOLATED TO WIDELY SCATTERED SHOWERS AND
  THUNDERSTORMS WILL DEVELOP ACROSS NORTHERN UTAH LATE WEDNESDAY
  MORNING AND PERSIST THROUGH THE EVENING HOURS. THESE STORMS
  WILL LIKELY HAVE LITTLE RAIN ASSOCIATED WITH THEM.

* WINDS...ANY SHOWERS AND THUNDERSTORMS THAT DEVELOP WILL BE 
  CAPABLE OF PRODUCING GUSTY AND ERRATIC OUTFLOW WINDS.

* IMPACTS...LIGHTNING IS EXPECTED WITH ANY THUNDERSTORMS ON
  WEDNESDAY. DUE TO AN EXTENDED PERIOD OF DRY CONDITIONS...ANY
  FIRES THAT START FROM THE LIGHTNING CAN SPREAD QUICKLY.
  ADDITIONALLY...ANY GUSTY OUTFLOW WINDS IN THE VICINITY OF THESE
  FIRE STARTS MAY RESULT IN EXTREME FIRE BEHAVIOR.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A RED FLAG WARNING MEANS THAT CRITICAL FIRE WEATHER CONDITIONS
ARE EITHER OCCURRING NOW...OR WILL SHORTLY. LIGHTNING AFTER AN
EXTREMELY DRY PERIOD CAN RESULT IN FIRE STARTS THAT SPREAD
QUICKLY. ADDITIONALLY...ANY GUSTY OUTFLOW WINDS IN THE VICINITY
OF THESE FIRE STARTS CAN CONTRIBUTE TO EXTREME FIRE BEHAVIOR.

&&

$$

UTZ497-290400-
/O.CON.KSLC.FW.W.0001.000000T0000Z-160629T0400Z/
MOJAVE DESERT-
217 PM MDT TUE JUN 28 2016

...RED FLAG WARNING REMAINS IN EFFECT UNTIL 10 PM MDT THIS
EVENING FOR LIGHTNING AFTER AN EXTREMELY PERIOD FOR FIRE WEATHER
ZONE 497...

* AFFECTED AREA...FIRE WEATHER ZONE 497 MOJAVE DESERT.

* THUNDERSTORMS...WIDELY SCATTERED SHOWERS AND THUNDERSTORMS WILL
  CONTINUE TO DEVELOP OVER EXTREME SOUTHERN UTAH THIS AFTERNOON
  AND WILL LIKELY HAVE LITTLE RAIN ASSOCIATED WITH THEM. THE
  STORMS ARE EXPECTED TO DECREASE IN COVERAGE THIS EVENING...BUT
  COULD PERSIST INTO THE OVERNIGHT HOURS.

* WINDS...ANY SHOWERS AND THUNDERSTORMS THAT DEVELOP WILL BE 
  CAPABLE OF PRODUCING GUSTY AND ERRATIC OUTFLOW WINDS.

* IMPACTS...LIGHTNING IS EXPECTED WITH ANY THUNDERSTORMS FOR THE
  REMAINDER OF THIS AFTERNOON AND EVENING. DUE TO AN EXTENDED
  PERIOD OF DRY CONDITIONS...ANY FIRES THAT START FROM THE
  LIGHTNING CAN SPREAD QUICKLY. ADDITIONALLY...ANY GUSTY OUTFLOW
  WINDS IN THE VICINITY OF THESE FIRE STARTS MAY RESULT IN EXTREME
  FIRE BEHAVIOR.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A RED FLAG WARNING MEANS THAT CRITICAL FIRE WEATHER CONDITIONS
ARE EITHER OCCURRING NOW...OR WILL SHORTLY. LIGHTNING AFTER AN
EXTREMELY DRY PERIOD CAN RESULT IN FIRE STARTS THAT SPREAD
QUICKLY. ADDITIONALLY...ANY GUSTY OUTFLOW WINDS IN THE VICINITY
OF THESE FIRE STARTS CAN CONTRIBUTE TO EXTREME FIRE BEHAVIOR.

&&

$$

FOR MORE INFORMATION FROM NOAA/NATIONAL WEATHER SERVICE VISIT...
HTTP://WEATHER.GOV/SALTLAKECITY (ALL LOWER CASE)
3 follow-up statements
273 
WWUS85 KSLC 290950
RFWSLC

URGENT - FIRE WEATHER MESSAGE
NATIONAL WEATHER SERVICE SALT LAKE CITY UT
350 AM MDT WED JUN 29 2016

UTZ478-489-492-494-495-498-292200-
/O.CON.KSLC.FW.W.0002.160629T1600Z-160630T0400Z/
SALT LAKE DESERT-SAN RAFAEL SWELL-CENTRAL UTAH WEST DESERT-
HENRY MOUNTAINS-COLOR COUNTRY WEST DESERT-GRAND STAIRCASE-
350 AM MDT WED JUN 29 2016

...RED FLAG WARNING REMAINS IN EFFECT FROM 10 AM THIS MORNING TO
10 PM MDT THIS EVENING FOR LIGHTING AFTER AN EXTREMELY DRY PERIOD FOR
FIRE WEATHER ZONES 478...489...492...494...495 AND 498...

* AFFECTED AREA...FIRE WEATHER ZONE 478 SALT LAKE DESERT...FIRE 
  WEATHER ZONE 489 SAN RAFAEL SWELL...FIRE WEATHER ZONE 492 
  CENTRAL UTAH WEST DESERT...FIRE WEATHER ZONE 494 HENRY 
  MOUNTAINS...FIRE WEATHER ZONE 495 COLOR COUNTRY WEST DESERT 
  AND FIRE WEATHER ZONE 498 GRAND STAIRCASE.

* THUNDERSTORMS...ISOLATED TO WIDELY SCATTERED SHOWERS AND
  THUNDERSTORMS WILL DEVELOP ACROSS NORTHERN UTAH THIS MORNING
  AND PERSIST THROUGH THE EVENING HOURS. THESE STORMS WILL LIKELY
  HAVE LITTLE RAIN ASSOCIATED WITH THEM.

* WINDS...ANY SHOWERS AND THUNDERSTORMS THAT DEVELOP WILL BE 
  CAPABLE OF PRODUCING GUSTY AND ERRATIC OUTFLOW WINDS.

* IMPACTS...LIGHTNING IS EXPECTED WITH ANY THUNDERSTORMS ON 
  WEDNESDAY. DUE TO AN EXTENDED PERIOD OF DRY CONDITIONS...ANY 
  FIRES THAT START FROM THE LIGHTNING CAN SPREAD QUICKLY. 
  ADDITIONALLY...ANY GUSTY OUTFLOW WINDS IN THE VICINITY OF 
  THESE FIRE STARTS MAY RESULT IN EXTREME FIRE BEHAVIOR.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A RED FLAG WARNING MEANS THAT CRITICAL FIRE WEATHER CONDITIONS
ARE EITHER OCCURRING NOW...OR WILL SHORTLY. LIGHTNING AFTER AN
EXTREMELY DRY PERIOD CAN RESULT IN FIRE STARTS THAT SPREAD
QUICKLY. ADDITIONALLY...ANY GUSTY OUTFLOW WINDS IN THE VICINITY
OF THESE FIRE STARTS CAN CONTRIBUTE TO EXTREME FIRE BEHAVIOR.

&&

$$

FOR MORE INFORMATION FROM NOAA/NATIONAL WEATHER SERVICE VISIT...
HTTP://WEATHER.GOV/SALTLAKECITY (ALL LOWER CASE)
379 
WWUS85 KSLC 291001
RFWSLC

URGENT - FIRE WEATHER MESSAGE
NATIONAL WEATHER SERVICE SALT LAKE CITY UT
401 AM MDT WED JUN 29 2016

UTZ482-484-292200-
/O.EXA.KSLC.FW.W.0002.160629T1600Z-160630T0400Z/
WESTERN UINTAH BASIN-TAVAPUTS PLATEAU-
401 AM MDT WED JUN 29 2016

...RED FLAG WARNING IN EFFECT FROM 10 AM THIS MORNING TO 10 PM
MDT THIS EVENING FOR LIGHTNING AFTER AN EXTREMELY DRY PERIOD FOR
FIRE WEATHER ZONES 482 AND 484...

THE NATIONAL WEATHER SERVICE IN SALT LAKE CITY HAS ISSUED A RED
FLAG WARNING FOR LIGHTNING AFTER AN EXTREMELY DRY PERIOD...WHICH
IS IN EFFECT FROM 10 AM THIS MORNING TO 10 PM MDT THIS EVENING.

* AFFECTED AREA...FIRE WEATHER ZONE 482 WESTERN UINTAH BASIN AND 
  FIRE WEATHER ZONE 484 TAVAPUTS PLATEAU.

* THUNDERSTORMS...ISOLATED TO WIDELY SCATTERED SHOWERS AND
  THUNDERSTORMS WILL DEVELOP THIS MORNING AND PERSIST THROUGH THE
  EVENING HOURS. THESE STORMS WILL LIKELY HAVE LITTLE RAIN
  ASSOCIATED WITH THEM.

* WINDS...ANY SHOWERS AND THUNDERSTORMS THAT DEVELOP WILL BE 
  CAPABLE OF PRODUCING GUSTY AND ERRATIC OUTFLOW WINDS.

* IMPACTS...LIGHTNING IS EXPECTED WITH ANY THUNDERSTORMS ON 
  WEDNESDAY. DUE TO AN EXTENDED PERIOD OF DRY CONDITIONS...ANY 
  FIRES THAT START FROM THE LIGHTNING CAN SPREAD QUICKLY. 
  ADDITIONALLY...ANY GUSTY OUTFLOW WINDS IN THE VICINITY OF 
  THESE FIRE STARTS MAY RESULT IN EXTREME FIRE BEHAVIOR.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A RED FLAG WARNING MEANS THAT CRITICAL FIRE WEATHER CONDITIONS
ARE EITHER OCCURRING NOW...OR WILL SHORTLY. LIGHTNING AFTER AN
EXTREMELY DRY PERIOD CAN RESULT IN FIRE STARTS THAT SPREAD
QUICKLY. ADDITIONALLY...ANY GUSTY OUTFLOW WINDS IN THE VICINITY
OF THESE FIRE STARTS CAN CONTRIBUTE TO EXTREME FIRE BEHAVIOR.

&&

$$

UTZ478-489-492-494-495-498-292200-
/O.CON.KSLC.FW.W.0002.160629T1600Z-160630T0400Z/
SALT LAKE DESERT-SAN RAFAEL SWELL-CENTRAL UTAH WEST DESERT-
HENRY MOUNTAINS-COLOR COUNTRY WEST DESERT-GRAND STAIRCASE-
401 AM MDT WED JUN 29 2016

...RED FLAG WARNING REMAINS IN EFFECT FROM 10 AM THIS MORNING TO
10 PM MDT THIS EVENING FOR LIGHTNING AFTER AN EXTREMELY DRY PERIOD
FOR FIRE WEATHER ZONES 478...489...492...494...495 AND 498...

* AFFECTED AREA...FIRE WEATHER ZONE 478 SALT LAKE DESERT...FIRE 
  WEATHER ZONE 489 SAN RAFAEL SWELL...FIRE WEATHER ZONE 492 
  CENTRAL UTAH WEST DESERT...FIRE WEATHER ZONE 494 HENRY 
  MOUNTAINS...FIRE WEATHER ZONE 495 COLOR COUNTRY WEST DESERT 
  AND FIRE WEATHER ZONE 498 GRAND STAIRCASE.

* THUNDERSTORMS...ISOLATED TO WIDELY SCATTERED SHOWERS AND
  THUNDERSTORMS WILL DEVELOP THIS MORNING AND PERSIST THROUGH THE
  EVENING HOURS. THESE STORMS WILL LIKELY HAVE LITTLE RAIN
  ASSOCIATED WITH THEM.

* WINDS...ANY SHOWERS AND THUNDERSTORMS THAT DEVELOP WILL BE 
  CAPABLE OF PRODUCING GUSTY AND ERRATIC OUTFLOW WINDS.

* IMPACTS...LIGHTNING IS EXPECTED WITH ANY THUNDERSTORMS ON 
  WEDNESDAY. DUE TO AN EXTENDED PERIOD OF DRY CONDITIONS...ANY 
  FIRES THAT START FROM THE LIGHTNING CAN SPREAD QUICKLY. 
  ADDITIONALLY...ANY GUSTY OUTFLOW WINDS IN THE VICINITY OF 
  THESE FIRE STARTS MAY RESULT IN EXTREME FIRE BEHAVIOR.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A RED FLAG WARNING MEANS THAT CRITICAL FIRE WEATHER CONDITIONS
ARE EITHER OCCURRING NOW...OR WILL SHORTLY. LIGHTNING AFTER AN
EXTREMELY DRY PERIOD CAN RESULT IN FIRE STARTS THAT SPREAD
QUICKLY. ADDITIONALLY...ANY GUSTY OUTFLOW WINDS IN THE VICINITY
OF THESE FIRE STARTS CAN CONTRIBUTE TO EXTREME FIRE BEHAVIOR.

&&

$$

FOR MORE INFORMATION FROM NOAA/NATIONAL WEATHER SERVICE VISIT...
HTTP://WEATHER.GOV/SALTLAKECITY (ALL LOWER CASE)
224 
WWUS85 KSLC 292006
RFWSLC

URGENT - FIRE WEATHER MESSAGE
NATIONAL WEATHER SERVICE SALT LAKE CITY UT
206 PM MDT WED JUN 29 2016

UTZ478-482-484-489-492-494-495-498-300400-
/O.CON.KSLC.FW.W.0002.000000T0000Z-160630T0400Z/
SALT LAKE DESERT-WESTERN UINTAH BASIN-TAVAPUTS PLATEAU-
SAN RAFAEL SWELL-CENTRAL UTAH WEST DESERT-HENRY MOUNTAINS-
COLOR COUNTRY WEST DESERT-GRAND STAIRCASE-
206 PM MDT WED JUN 29 2016

...RED FLAG WARNING REMAINS IN EFFECT UNTIL 10 PM MDT THIS
EVENING FOR FOR LIGHTNING AFTER AN EXTREMELY DRY PERIOD FOR FIRE
WEATHER ZONES 478... 482...484...489...492...494...495 AND 498...

* AFFECTED AREA...FIRE WEATHER ZONE 478 SALT LAKE DESERT...FIRE 
  WEATHER ZONE 482 WESTERN UINTAH BASIN...FIRE WEATHER ZONE 484 
  TAVAPUTS PLATEAU...FIRE WEATHER ZONE 489 SAN RAFAEL SWELL... 
  FIRE WEATHER ZONE 492 CENTRAL UTAH WEST DESERT...FIRE WEATHER 
  ZONE 494 HENRY MOUNTAINS...FIRE WEATHER ZONE 495 COLOR COUNTRY 
  WEST DESERT AND FIRE WEATHER ZONE 498 GRAND STAIRCASE.

* THUNDERSTORMS...ISOLATED TO WIDELY SCATTERED SHOWERS AND
  THUNDERSTORMS WILL PERSIST THROUGH THIS EVENING BEFORE TRENDING
  TO DISSIPATE. THESE STORMS WILL LIKELY HAVE LITTLE RAIN
  ASSOCIATED WITH THEM.

* WINDS...ANY SHOWERS AND THUNDERSTORMS THAT DEVELOP WILL BE
  CAPABLE OF PRODUCING GUSTY AND ERRATIC OUTFLOW WINDS...WITH
  WIND GUSTS IN EXCESS OF 50 MPH POSSIBLE.

* IMPACTS...LIGHTNING IS EXPECTED TO CONTINUE WITH ANY
  THUNDERSTORMS THROUGH THIS EVENING. DUE TO AN EXTENDED PERIOD
  OF DRY CONDITIONS...ANY FIRES THAT START FROM THE LIGHTNING CAN
  SPREAD QUICKLY. ADDITIONALLY...ANY GUSTY OUTFLOW WINDS IN THE
  VICINITY OF THESE FIRE STARTS MAY RESULT IN EXTREME FIRE
  BEHAVIOR.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A RED FLAG WARNING MEANS THAT CRITICAL FIRE WEATHER CONDITIONS
ARE EITHER OCCURRING NOW...OR WILL SHORTLY. LIGHTNING AFTER AN
EXTREMELY DRY PERIOD CAN RESULT IN FIRE STARTS THAT SPREAD
QUICKLY. ADDITIONALLY...ANY GUSTY OUTFLOW WINDS IN THE VICINITY
OF THESE FIRE STARTS CAN CONTRIBUTE TO EXTREME FIRE BEHAVIOR.

&&

$$

FOR MORE INFORMATION FROM NOAA/NATIONAL WEATHER SERVICE VISIT...
HTTP://WEATHER.GOV/SALTLAKECITY (ALL LOWER CASE)

Nearby

Red Flag Warnings in Utah, 2016Every red flag warning in 2016

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.