Alert archive / Georgia / Special Weather Statements in 2026

Special Weather Statement, NWS Atlanta, GA

August 13, 2026Harris County, Georgia

NWS Atlanta, GA issued this special weather statement at Aug 13, 2026, 4:21 PM EDT for Harris County, Georgia. It was in force for 24 min. 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
Aug 13, 2026, 4:21 PM EDT (20:21 UTC)
Expired
Aug 13, 2026, 4:45 PM EDT
In force
24 min
Issued by
NWS Atlanta, GA
Hail
0.25 in
Wind
50

County Harris County, GA

The radar

The Atlanta radar (KFFC), 79 km from the middle of the area, began a volume at 20:22 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
Aug 13, 4:40 PM EDTTSTM WND DMG3 Nne Cataula, GAPublic reports a tree and power lines down along Voorhees Road.

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

The nearest sounding before it

Peachtre/Fal Fld, GA (KFFC), launched 12:00Z, 8.4 hours before the alert went out and 82 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, Peachtre/Fal Fld, GA at 12:00Z on 2026-08-13Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 2543 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Peachtre/Fal Fld, GA at 12:00Z on 2026-08-13The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 82 square meters per square second.1939Sfc1 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
2543 J/kg
Mixed-layer CIN
-37 J/kg
Mixed-layer LCL
795 m above ground
0-6 km bulk shear
17 kt
0-1 km storm-relative helicity
82 m²/s²
0-3 km storm-relative helicity
68 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

As transmitted.

780 
WWUS82 KFFC 132021
SPSFFC

Special Weather Statement
National Weather Service Peachtree City GA
421 PM EDT Thu Aug 13 2026
 
GAZ078-089-132045-
Harris GA-Muscogee GA-
421 PM EDT Thu Aug 13 2026

...A strong thunderstorm will impact portions of northwestern
Muscogee and eastern Harris Counties through 445 PM EDT...

At 421 PM EDT, a strong thunderstorm was near Hamilton, moving
southeast at 15 mph.

HAZARD...40 to 50 mph wind, pea sized hail and frequent cloud to 
         ground lightning.

SOURCE...Radar indicated.

IMPACT...Expect minor damage to tree limbs and blowing around of 
         light, unsecured objects.

Locations impacted include...
Hamilton, Waverly Hall, Ellerslie, Laurel Hills, Midland, Mountain
Hill, Cataula, Fortson, and Mulberry Grove.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

People outdoors should seek shelter immediately. If you can hear
thunder, you are close enough to be struck by lightning.

&&

LAT...LON 3283 8487 3267 8469 3262 8469 3261 8470
      3251 8498 3276 8506
TIME...MOT...LOC 2021Z 324DEG 15KT 3274 8494 

MAX HAIL SIZE...0.25 IN
MAX WIND GUST...50 MPH

$$

What forecasters said that day

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

NWS Atlanta, GA wrote its last area forecast discussion before this special weather statement went out at Aug 13, 3:07 PM EDT, 1 hour 14 minutes earlier. Its key messages:

  • Scattered thunderstorms will be possible each day this week posing a threat for gusty winds and locally heavy rainfall. A few storms this afternoon could be strong to severe.
  • A Heat Advisory is in effect for portions of central and east Georgia until 8 PM this evening. Another Heat Advisory is in effect for central and much of north Georgia from noon to 8 PM on Friday.
  • Impactful heat is becoming increasingly likely as heat indices climb into the 100s during the late week and into the weekend.
Area forecast discussion, Aug 13, 3:07 PM EDT, 1 hour 14 minutes before
Area Forecast Discussion
National Weather Service Peachtree City GA
307 PM EDT Thu Aug 13 2026

...Afternoon Area Forecast Discussion...

.KEY MESSAGES...

-  Scattered thunderstorms will be possible each day this week
   posing a threat for gusty winds and locally heavy rainfall. A
   few storms this afternoon could be strong to severe.

-  A Heat Advisory is in effect for portions of central and east
   Georgia until 8 PM this evening. Another Heat Advisory is in
   effect for central and much of north Georgia from noon to 8 PM
   on Friday.

-  Impactful heat is becoming increasingly likely as heat indices
   climb into the 100s during the late week and into the weekend.

&&

.SHORT TERM...
(This evening through Friday)
Issued at 302 PM EDT Thu Aug 13 2026

The short term period will be characterized by an amplifying mid-
level ridge translating from the Great Plains towards the eastern
CONUS. This afternoon, the forecast area remains underneath
northwesterly flow along the eastern flank of the ridge, with a
subtle disturbance traversing this flow through Tennessee and into
north Georgia. The airmass in place over the region is already
highly favorable for diurnally-driven convection, with dewpoints in
the mid 70s and temperatures rising into the 90s contributing to
SBCAPE values between 3000-4000 J/kg. These SBCAPE values combined
with precipitable water values between 1.8-2.2 inches and DCAPE
between 800-1200 J/kg will also favor the development of strong to
marginally severe storms capable of producing strong, water-loaded
downdrafts. Damaging wind gusts and locally heavy rain will be the
primary threats with any stronger storms that occur. Furthermore, as
the aforementioned upper disturbance draws closer to the area,
storms have become begun to become loosely organized into broken
line segments along outflow boundaries. These features will be the
most likely to produce severe weather as they propagate from
northwest to southeast through the remainder of the afternoon and
into the early evening.

Temperatures and dewpoints today have been highest in central and
far east Georgia, with heat index values climbing into the mid 100s
as a result. A Heat Advisory is in effect for these areas through 8
PM EDT this evening. Temperatures will continue their steady climb
overnight into Friday as the axis of the ridge draws closer to
Georgia. High temperatures on Friday will rise into the mid to upper
90s. With ample moisture lingering even under the ridge, heat index
values tomorrow will rise into the mid to upper 100s in all but the
far northeastern mountains. Deep moisture will also ensure that
there is little relief overnight, with low temperatures in the mid
to upper 70s flirting with record high minimum Friday and Saturday
morning. Another Heat Advisory has been issued across all of central
and the majority of north Georgia accordingly for Friday, which will
be in effect from noon to 8 PM EDT in the afternoon.

The eastward movement of the ridge will serve to displace our
persistent northwesterly flow regime away from our area. This will
at least inhibit the linear, downstream evolution of storms, but
lingering moisture will ensure that isolated to scattered storms
will be able to develop on Friday afternoon nonetheless. A high PWAT
airmass and strong instability will once again favor a few strong
storms capable of producing gusty winds and locally heavy rain once
again.

&&

.LONG TERM...
(Saturday morning through next Wednesday)
Issued at 302 PM EDT Thu Aug 13 2026

Broad ridging will extend across the southern and southeastern U.S
as we close out the weekend and head into early next week. As such,
temperatures will remain above normal with heat index values over
100 across the bulk of the area during this time frame. Additional
Heat Advisories are highly likely to continue for portions of the
area where heat index values over 105 occur.

By midweek, the core of the midlevel ridge shifts westward to center
across the Southern Plains into the Southwest. As such, the forecast
area transitions to be on the eastern periphery of the ridge,
favoring a return to a pattern more supportive of additional
disturbances/thunderstorm complexes working southward, though
details of timing and exact placement of these will be unclear until
we get closer to this time frame. Thus, while PoPs remain fairly low
and of the isolated variety at this juncture, these could certainly
trend upward as we get closer to next week.

&&

.AVIATION...
(18Z TAFS)
Issued at 122 PM EDT Thu Aug 13 2026

Scattered TSRA has developed across much of north and central
Georgia and is forecast to continue through the late afternoon.
There is a TEMPO for TSRA at ATL from 18-22Z to account for
convection over the metro area. A VFR cu field between 035-050
will persist through the afternoon as well. W/NW winds of 6-10 kts
today will diminish to 5 kts or less overnight. Scattered diurnal
storms are expected once again on Friday, warranting a PROB30 for
TSRA from 18-23Z.

//ATL Confidence...18Z Update...
High confidence on all elements.

King

&&

.PRELIMINARY POINT TEMPS/POPS...
Athens          74  97  76  98 /  10  20  10  20
Atlanta         76  94  77  95 /  10  20  10  20
Blairsville     70  88  71  89 /  10  20   0  40
Cartersville    74  94  75  95 /  10  20  10  10
Columbus        77  95  77  95 /  30  30  20  50
Gainesville     75  95  76  96 /  10  20  10  30
Macon           75  95  76  95 /  20  30  10  30
Rome            74  93  75  94 /  10  20  10  20
Peachtree City  74  94  75  94 /  10  20  10  30
Vidalia         76  97  77  97 /  10  20  20  30

&&

.FFC WATCHES/WARNINGS/ADVISORIES...
Heat Advisory from noon to 8 PM EDT Friday for GAZ001>005-011-
012-019>025-027-030>039-041>062-066>076-078>086-089>098-102>113.

Heat Advisory until 8 PM EDT this evening for GAZ027-036>039-
047>051-058>062-069-071>076-078>086-089>098-102>113.

&&

SHORT TERM...King
LONG TERM....RW
AVIATION...King
Hazardous weather outlook, Aug 13, 1:54 PM EDT, 2 hours 27 minutes before
Hazardous Weather Outlook
National Weather Service Peachtree City GA
154 PM EDT Thu Aug 13 2026

GAZ001>009-011>016-019>025-027-030>039-041>062-066>076-078>086-
089>098-102>113-141800-
Baldwin-Banks-Barrow-Bartow-Bibb-Bleckley-Butts-Carroll-Catoosa-
Chattahoochee-Chattooga-Cherokee-Clarke-Clayton-Cobb-Coweta-
Crawford-Crisp-Dade-Dawson-DeKalb-Dodge-Dooly-Douglas-Emanuel-
Fannin-Fayette-Floyd-Forsyth-Gilmer-Glascock-Gordon-Greene-
Gwinnett-Hall-Hancock-Haralson-Harris-Heard-Henry-Houston-Jackson-
Jasper-Jefferson-Johnson-Jones-Lamar-Laurens-Lumpkin-Macon-
Madison-Marion-Meriwether-Monroe-Montgomery-Morgan-Murray-
Muscogee-Newton-North Fulton-Oconee-Oglethorpe-Paulding-Peach-
Pickens-Pike-Polk-Pulaski-Putnam-Rockdale-Schley-South Fulton-
Spalding-Stewart-Sumter-Talbot-Taliaferro-Taylor-Telfair-Toombs-
Towns-Treutlen-Troup-Twiggs-Union-Upson-Walker-Walton-Warren-
Washington-Webster-Wheeler-White-Whitfield-Wilcox-Wilkes-
Wilkinson-
154 PM EDT Thu Aug 13 2026

This Hazardous Weather Outlook is for north and central Georgia.

.DAY ONE...This Afternoon and Tonight...

Scattered thunderstorms are expected across the area this
afternoon. A few of these storms may become strong to severe,
capable of producing damaging wind gusts, small hail, frequent
lightning, and locally heavy rainfall.

A Heat Advisory is in effect for portions of central and east
Georgia until 8 PM EDT for heat index values between 105 to 108
degrees.

.DAYS TWO THROUGH SEVEN...Friday through Wednesday...

Hot and humid conditions will persist through the weekend, with
heat indices in the triple digits each day. Another Heat Advisory
will be in effect for central and much of north Georgia from noon
to 8 PM EDT on Friday.

Isolated to scattered showers and thunderstorms are expected each
afternoon through the week. Locally heavy rainfall and gusty
winds will be primary storm threats.

.SPOTTER INFORMATION STATEMENT...

Spotter activation is not requested but spotters are encouraged
to submit reports of severe weather through the web by going to
weather.gov/atlanta.  Please relay any information about observed
severe weather to the NWS while following all local, state, and
CDC guidelines.

In the hours before

Local storm report, Aug 13, 3:55 PM EDT, 26 minutes before
Preliminary Local Storm Report
National Weather Service Peachtree City GA
355 PM EDT Thu Aug 13 2026

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

0330 PM     Tstm Wnd Dmg     2 SSW Swainsboro        32.58N 82.35W
08/13/2026                   Emanuel            GA   Public

            Public reports power lines down near the
            intersection of Meadowlark Parkway and Old
            Nunez Road.

&&
Local storm report, Aug 13, 3:58 PM EDT, 23 minutes before
Preliminary Local Storm Report
National Weather Service Peachtree City GA
358 PM EDT Thu Aug 13 2026

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

0325 PM     Tstm Wnd Dmg     1 NW Swainsboro         32.61N 82.35W
08/13/2026                   Emanuel            GA   Public

            Public reports a large tree and power lines
            down along Gumlog Road near the intersection
            with Brown Street.

&&
Special weather statement, Aug 13, 4:03 PM EDT, 18 minutes before
Special Weather Statement
National Weather Service Peachtree City GA
403 PM EDT Thu Aug 13 2026

GAZ058-070-071-132030-
Butts GA-Lamar GA-Monroe GA-
403 PM EDT Thu Aug 13 2026

...A strong thunderstorm will impact portions of northwestern Monroe,
southwestern Butts and northeastern Lamar Counties through 430 PM
EDT...

At 403 PM EDT, a strong thunderstorm was over Chappel Mill, or 9
miles southwest of Jackson, moving southeast at 15 mph.

HAZARD...40 to 50 mph wind, pea sized hail and frequent cloud to
         ground lightning.

SOURCE...Radar indicated.

IMPACT...Expect minor damage to tree limbs and blowing around of
         light, unsecured objects.

Locations impacted include...
Forsyth, High Falls State Park, Blount, Liberty Hill, and Chappel
Mill.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

People outdoors should seek shelter immediately. If you can hear
thunder, you are close enough to be struck by lightning.

&&

LAT...LON 3318 8415 3318 8412 3322 8412 3327 8410
      3320 8385 3304 8395 3316 8416
TIME...MOT...LOC 2003Z 297DEG 15KT 3319 8406

MAX HAIL SIZE...0.25 IN
MAX WIND GUST...50 MPH
Special weather statement, Aug 13, 4:04 PM EDT, 17 minutes before
Special Weather Statement
National Weather Service Peachtree City GA
404 PM EDT Thu Aug 13 2026

GAZ067-069-079-132030-
Upson GA-Meriwether GA-Talbot GA-
404 PM EDT Thu Aug 13 2026

...A strong thunderstorm will impact portions of southeastern
Meriwether, west central Upson and northwestern Talbot Counties
through 430 PM EDT...

At 404 PM EDT, a strong thunderstorm was over Manchester, or 11 miles
north of Talbotton, moving southeast at 15 mph.

HAZARD...40 to 50 mph wind, pea sized hail and frequent cloud to
         ground lightning.

SOURCE...Radar indicated.

IMPACT...Expect minor damage to tree limbs and blowing around of
         light, unsecured objects.

Locations impacted include...
Manchester, Woodland, Sunset Village, Sprewell Bluff State Park,
Pleasant Hill, Big Lazer Creek Wma, Flint Hill, and Po Biddy
Crossroads.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

People outdoors should seek shelter immediately. If you can hear
thunder, you are close enough to be struck by lightning.

&&

LAT...LON 3280 8467 3294 8459 3286 8434 3268 8447
TIME...MOT...LOC 2004Z 297DEG 15KT 3285 8457

MAX HAIL SIZE...0.25 IN
MAX WIND GUST...50 MPH
Special weather statement, Aug 13, 4:20 PM EDT, 1 minute before
Special Weather Statement
National Weather Service Peachtree City GA
420 PM EDT Thu Aug 13 2026

GAZ039-051-062-132045-
Taliaferro GA-Wilkes GA-Warren GA-
420 PM EDT Thu Aug 13 2026

...A strong thunderstorm will impact portions of northwestern Warren,
Taliaferro and southwestern Wilkes Counties through 445 PM EDT...

At 420 PM EDT, a strong thunderstorm was over Lyneville, or near
Crawfordville, moving southeast at 30 mph.

HAZARD...40 to 50 mph wind, up to penny sized hail, frequent cloud
         to ground lightning and heavy rain.

SOURCE...Radar indicated.

IMPACT...Expect minor damage to tree limbs and blowing around of
         light, unsecured objects. Heavy rain may cause temporary
         street flooding especially in poor drainage areas.

Locations impacted include...
Warrenton, Crawfordville, Norwood, Sharon, Camak, Ficklin, Cadley,
Lundberg, Mayfield, Barnett, Raytown, Lyneville, Alexander Stephens
Park, Sandy Cross, and Carters Grove.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

People outdoors should seek shelter immediately. If you can hear
thunder, you are close enough to be struck by lightning. Motorists
should slow down and be prepared for possible loss of control due to
hydroplaning.

&&

LAT...LON 3333 8280 3336 8280 3337 8282 3339 8282
      3339 8283 3343 8282 3345 8288 3363 8299
      3362 8298 3364 8297 3366 8295 3368 8297
      3377 8283 3358 8264 3345 8259
TIME...MOT...LOC 2020Z 325DEG 24KT 3363 8288

MAX HAIL SIZE...0.75 IN
MAX WIND GUST...50 MPH
Special weather statement, Aug 13, 4:21 PM EDT, 0 minutes before
Special Weather Statement
National Weather Service Peachtree City GA
421 PM EDT Thu Aug 13 2026

GAZ078-089-132045-
Harris GA-Muscogee GA-
421 PM EDT Thu Aug 13 2026

...A strong thunderstorm will impact portions of northwestern
Muscogee and eastern Harris Counties through 445 PM EDT...

At 421 PM EDT, a strong thunderstorm was near Hamilton, moving
southeast at 15 mph.

HAZARD...40 to 50 mph wind, pea sized hail and frequent cloud to
         ground lightning.

SOURCE...Radar indicated.

IMPACT...Expect minor damage to tree limbs and blowing around of
         light, unsecured objects.

Locations impacted include...
Hamilton, Waverly Hall, Ellerslie, Laurel Hills, Midland, Mountain
Hill, Cataula, Fortson, and Mulberry Grove.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

People outdoors should seek shelter immediately. If you can hear
thunder, you are close enough to be struck by lightning.

&&

LAT...LON 3283 8487 3267 8469 3262 8469 3261 8470
      3251 8498 3276 8506
TIME...MOT...LOC 2021Z 324DEG 15KT 3274 8494

MAX HAIL SIZE...0.25 IN
MAX WIND GUST...50 MPH

The office that day

Everything else NWS Atlanta, GA issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Aug 13, 12:41 PM EDTSpecial Weather StatementFFCHancock34 min
Aug 13, 1:16 PM EDTSpecial Weather StatementFFCTwiggs29 min
Aug 13, 1:34 PM EDTSevere Thunderstorm WarningFFCTwiggs26 min
Aug 13, 1:42 PM EDTHeat AdvisoryFFCBaldwin, Banks, Barrow, Bartow, Bibb, Bleckley and 82 more5 days
Aug 13, 1:58 PM EDTSpecial Weather StatementFFCNewton32 min
Aug 13, 2:03 PM EDTSpecial Weather StatementFFCBleckley27 min
Aug 13, 2:06 PM EDTSpecial Weather StatementFFCTreutlen24 min
Aug 13, 2:21 PM EDTSpecial Weather StatementFFCWilkinson24 min
Aug 13, 2:23 PM EDTSpecial Weather StatementFFCJasper37 min
Aug 13, 2:25 PM EDTSpecial Weather StatementFFCWashington35 min
Aug 13, 2:27 PM EDTSevere Thunderstorm WarningFFCWilkinson33 min
Aug 13, 2:29 PM EDTSevere Thunderstorm WarningFFCLaurens, Treutlen31 min
Aug 13, 2:44 PM EDTSpecial Weather StatementFFCPulaski31 min
Aug 13, 2:47 PM EDTSevere Thunderstorm WarningFFCDooly, Pulaski, Wilcox28 min
Aug 13, 2:48 PM EDTSpecial Weather StatementFFCFayette27 min
Aug 13, 2:57 PM EDTSevere Thunderstorm WarningFFCLaurens, Montgomery, Treutlen, Wheeler33 min
Aug 13, 2:59 PM EDTSpecial Weather StatementFFCJohnson31 min
Aug 13, 3:14 PM EDTSpecial Weather StatementFFCSpalding31 min
Aug 13, 3:18 PM EDTSpecial Weather StatementFFCEmanuel27 min
Aug 13, 3:24 PM EDTSevere Thunderstorm WarningFFCEmanuel, Treutlen36 min
Aug 13, 3:25 PM EDTSpecial Weather StatementFFCBaldwin, Hancock35 min
Aug 13, 3:29 PM EDTSpecial Weather StatementFFCOglethorpe31 min
Aug 13, 3:47 PM EDTSpecial Weather StatementFFCCandler28 min
Aug 13, 3:54 PM EDTSpecial Weather StatementFFCWarren36 min
Aug 13, 4:03 PM EDTSpecial Weather StatementFFCButts27 min
Aug 13, 4:04 PM EDTSpecial Weather StatementFFCTalbot26 min
Aug 13, 4:20 PM EDTSpecial Weather StatementFFCTaliaferro, Warren25 min
Aug 13, 4:25 PM EDTSpecial Weather StatementFFCMonroe35 min
Aug 13, 4:28 PM EDTSevere Thunderstorm WarningFFCHarris, Muscogee19 min
Aug 13, 4:37 PM EDTSpecial Weather StatementFFCWarren38 min
Aug 13, 4:48 PM EDTSpecial Weather StatementFFCTalbot27 min
Aug 13, 4:58 PM EDTSpecial Weather StatementFFCMonroe32 min
Aug 13, 5:10 PM EDTSevere Thunderstorm WarningFFCCrisp, Dooly, Sumter35 min
Aug 13, 5:17 PM EDTSpecial Weather StatementFFCMarion28 min
Aug 13, 5:18 PM EDTSpecial Weather StatementFFCStewart27 min
Aug 13, 5:23 PM EDTSpecial Weather StatementFFCStewart, Webster37 min
Aug 13, 5:34 PM EDTSpecial Weather StatementFFCMarion26 min
Aug 13, 5:35 PM EDTSpecial Weather StatementFFCCrisp25 min
Aug 13, 5:51 PM EDTSpecial Weather StatementFFCCrisp, Sumter24 min
Aug 13, 6:01 PM EDTSpecial Weather StatementFFCCrisp29 min
Aug 13, 6:02 PM EDTSpecial Weather StatementFFCWebster28 min
Aug 13, 6:15 PM EDTSpecial Weather StatementFFCTwiggs30 min
Aug 13, 6:17 PM EDTSpecial Weather StatementFFCSumter28 min
Aug 13, 6:24 PM EDTSevere Thunderstorm WarningFFCSumter36 min

Nearby

Special Weather Statements in Georgia, 2026Every special weather statement in 2026

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.